OceanDataLab

Scheduled maintenance

Sylvain Herlédan — Wed, 01 Apr 2026 15:15:48 GMT

Several maintenance operations will be performed on Wednesday 8^th April and will cause the temporary unavailability of our data servers and websites.

The first operation will start at 08:00 UTC and will result in the unavailability of the SEAShot website.
While this first maintenance is ongoing, most data will be impossible to load in Syntool portals, aside from Sentinel-1 (after 1^st November 2021), Sentinel-3 OLCI L1 and SLSTR L1 NRT acquisitions and data loaded from external sources.

A second operation is planned before noon, this time resulting in the unavailability of

Sentinel-3 SRAL L2 products before 2024
Sentinel-3 SLSTR SST data before 2024
Sentinel-6 P4 L2 products before 2024
XWAVES data before 2020
WAVERYS/MFWAM products before August 2019
Geostrophic current, MSLA and MADT from CMEMS before 20^th November 2024
Total and Ekman currents at 0m and 15m before 2025

Finally, the third maintenance is scheduled in the afternoon starting 12:00 UTC and will cause the unavailability of our websites and Syntool portals for a short while.

As always, we will do everything we can to keep this unavailability as short as possible.

Please also note that a short interruption of service is expected at some point in the afternoon (UTC +02:00) on Friday 3^rd April to extend our storage capacity.

Scheduled maintenance

Sylvain Herlédan — Wed, 31 Dec 2025 11:36:12 GMT

Several maintenance operations will be performed on Thursday 8^th January and will cause the temporary unavailability of our data servers and websites.

The first operation will start at 08:00 UTC and will result in the unavailability of the SEAShot website.
While this first maintenance is ongoing, most data will be impossible to load in Syntool portals, aside from Sentinel-1 (after 1^st November 2021), Sentinel-3 OLCI and SLSTR L1 NRT acquisitions and data loaded from external sources.

A second operation is planned before noon, this time resulting in the unavailability of

Sentinel-3 SRAL L2 products before 2024
Sentinel-3 SLSTR SST data before 2025
Sentinel-3 OLCI Chlorophyll-a before 2025
Sentinel-6 P4 L2 products before 2024
XWAVES data before 2020
MFWAM data before August 2019
Geostrophic current and SSH/SLA maps before 20^th November 2024
Total and Ekman current before 2025

Finally, the third maintenance is scheduled in the afternoon starting 13:00 UTC and will cause the unavailability of our websites and Syntool portals for a short while.

As always, we will do everything we can to keep this unavailability as short as possible.

Scheduled maintenance

Sylvain Herlédan — Fri, 26 Dec 2025 14:05:02 GMT

Processing of NRT Sentinel-1 and Sentinel-3 (OLCI and SLSTR) will be temporarily interrupted at the end of 2025 in order to perform necessary infrastructure maintenance.

No processing will take place on 1^st January, updates on the infrastructure will be performed on 2^nd January starting 08:00 UTC and should take several hours, potentially making 2025 data impossible to load for a few minutes.
Backlog will be processed in priority and operations on NRT data are expected to resume in the evening.

If a Syntool portal containing these data is opened in your browser, you will need to refresh the webpage in order to see 2025 and 2026 data once the maintenance is over.

As always, we will do everything we can to keep this data unavailability as short as possible.

Other maintenance activities are currently planned for 8^th January, we will post another news to confirm the date and the extent of impacted service/data.

Scheduled maintenance

Sylvain Herlédan — Wed, 01 Oct 2025 10:16:40 GMT

Several maintenance operations will be performed on Wednesday 8^th October and will cause the temporary unavailability of our data servers and websites.

The first operation will start at 07:00 UTC and will result in the unavailability of the SEAShot website.
While this first maintenance is ongoing, most data will be impossible to load in Syntool portals, aside from Sentinel-1 (after 1^st November 2021), Sentinel-3 OLCI L1 and SLSTR L1 NRT acquisitions, as well as data loaded from external sources.

A second operation is planned before noon, this time resulting in the unavailability of

Sentinel-3 SRAL L2 products before 2024
Sentinel-3 SLSTR SST data before 2025
Sentinel-3 OLCI Chl-a data before 2025
Sentinel-6 P4 L2 products before 2024
XWAVES data before 2020

New version of SEAScope available

Sylvain Herlédan — Wed, 09 Jul 2025 15:15:09 GMT

A new version of the SEAScope viewer application and its Python bindings has been released on https://seascope.oceandatalab.com

This update fixes some issues with the rendering of high resolution data, discrepancies between data and configuration files, etc… and makes the aspect of streamlines more consistent around the globe (changes are listed at the end of this news).

As always, don't hesitate to contact us by email (seascopenobotplease oceandatalab.com) if you have any question, an idea for a new feature that the tool is missing, or a comment on SEAScope :)

Sentinel-1C SAR-C (roughness), Sentinel-3A/-3B sigma0, AMSR-2 sea ice concentration from Bremen University, geostrophic current streamlines from CMEMS

Improvements and changes

Consistent streamlines length and speed independently of the location on the
Deprecation of the "defaultVariable" setting in the collection configuration
Support for name resolution when configuring the address to communicate with
Drop support for versions of macOS older than 10.15 Catalina

Bugfixes

Fix bug wherein the direction of streamlines was wrong near to the poles
Fix bug wherein high resolution raster images could partially disappear
Fix crash when high resolution data are rendered both as raster and as
Fix crash caused by composite variables whose fields have incompatible data
Fix crash occurring when the IDF/NetCDF files lack mandatory fields
Fix crash when the catalogue content is modified by Python bindings while
Fix bug on macOS wherein contextual menu and mouse cursor tooltip were not

Scheduled maintenance

Sylvain Herlédan — Tue, 08 Jul 2025 16:30:19 GMT

Several maintenance operations will be performed on Tuesday 15^th July and will cause the temporary unavailability of our data servers and websites.

The first operation will start at 07:00 UTC and will result in the unavailability of the SEAShot website.
While this first maintenance is ongoing, most data will be impossible to load in Syntool portals, aside from Sentinel-1 (after 1^st November 2021), Sentinel-3 OLCI L1 and SLSTR L1 NRT acquisitions and data loaded from external sources.

A second operation is planned before noon, this time resulting in the unavailability of

Sentinel-3 SRAL L2 products before 2024
Sentinel-3 SLSTR SST data before 2025
Sentinel-3 OLCI Chl-a data before 2025
Sentinel-6 P4 L2 products before 2024
XWAVES data before 2020

Scheduled maintenance

Sylvain Herlédan — Tue, 24 Jun 2025 17:10:28 GMT

Processing of NRT Sentinel-1 SAR roughness and Sentinel-3 OLCI L1 will be temporarily interrupted on 1^st July in order to perform necessary infrastructure maintenance.

Updates on the infrastructure will be performed starting 09:00 UTC and should take less than two hours, potentially making Sentinel-1 (A and C) SAR roughness and Sentinel-3 (A and B) OLCI L1 data impossible to load for a few minutes.

Backlog will be processed in priority and operations on NRT data are expected to resume in the afternoon.

As always, we will do everything we can to keep this data unavailability as short as possible.

Scheduled maintenance

Sylvain Herlédan — Tue, 01 Apr 2025 10:07:17 GMT

Several maintenance operations will be performed on Tuesday 8^th April and will cause the temporary unavailability of our data servers and websites.

The first operation will start at 08:00 UTC and will result in the unavailability of the SEAShot website.
While this first maintenance is ongoing, most data will be impossible to load in Syntool portals, aside from Sentinel-1 (after 1^st November 2021), Sentinel-3 OLCI L1 and SLSTR L1 NRT acquisitions and data loaded from external sources.

A second operation is planned before noon, this time resulting in the unavailability of

Sentinel-3 SRAL L2 products before 2024
Sentinel-3 SLSTR SST data before 2024
Sentinel-6 P4 L2 products before 2024
XWAVES data before 2020

OVL Newsletter subscription

Lucile Gaultier — Thu, 09 Jan 2025 17:22:02 GMT

Good news, we have set up a quarterly newsletter to keep you informed about the latest updates and improvements to the OVL tools—OVL Portal, SEAScope, and SEAShot. Each issue highlights new products on the OVL portal, enhanced functionalities to streamline your workflow, and training materials like tutorials and guides to help you maximize the tools efficiency for your needs.

Click here to subscribe

Scheduled maintenance

Sylvain Herlédan — Thu, 02 Jan 2025 17:12:56 GMT

Several maintenance operations will be performed on Wednesday 8^th January and will cause the temporary unavailability of our data servers and websites.

The first operation will start at 08:00 UTC and will result in the unavailability of the SEAShot website.
While this first maintenance is ongoing, most data will be impossible to load in Syntool portals, aside from Sentinel-1 (after 1^st November 2021), Sentinel-3 OLCI and SLSTR NRT acquisitions and data loaded from external sources.

A second operation is planned before noon, this time resulting in the unavailability of

Sentinel-3 SRAL L2 products before 2024
Sentinel-3 SLSTR SST data before 2024
Sentinel-6 P4 L2 products before 2024
XWAVES data before 2020

Scheduled maintenance

Sylvain Herlédan — Thu, 26 Dec 2024 14:35:44 GMT

Processing of NRT Sentinel-1 and Sentinel-3 (OLCI and SLSTR) will be temporarily interrupted at the end of 2024 in order to perform necessary infrastructure maintenance.

No processing will take place on 1^st January, updates on the infrastructure will be performed on 2^nd January starting 08:00 UTC and should take several hours, potentially making 2023 and 2024 data impossible to load for a few minutes.
Backlog will be processed in priority and operations on NRT data are expected to resume in the evening.

If a Syntool portal containing these data is opened in your browser, you will need to refresh the webpage in order to see 2025 data once the maintenance is over.

As always, we will do everything we can to keep this data unavailability as short as possible.

Other maintenance activities are currently planned for 8^th January, we will post another news to confirm the date and the extent of impacted service/data.

ESA CCI Products Now Available on the OVL Portal

Lucile Gaultier — Mon, 16 Dec 2024 17:06:04 GMT

The OVL portal (https://ovl.oceandatalab.com) now includes ESA CCI products, enabling users to explore the evolution of Sea Surface Temperature (SST) and its anomaly from 2010 to the present.

The following products are available globally:

Monthly SST (daily SST ESA CCI product has been averaged over a month): https://odl.bzh/zKivgog6
Monthly SST anomaly (a Monthly climatology have been computed from ESA CCI daily SST over the 1982-2009 period and subtracted from the monthly SST): https://odl.bzh/PZ_qwgfr

Animations showcasing the evolution of Monthly SST, and Monthly SST Anomaly were created using the SEAShot camera tool:

Many well known phenomena can be observed in those videos, among them one can highlight:

The Warm water propagating across the Pacific ocean during major El Nino events
A significant warming of the surface ot the ocean revealed by the SST anomaly data, particularly at high latitudes.

Visit the OVL Portal to dive deeper into these datasets and animations.

Scheduled maintenance

Sylvain Herlédan — Fri, 04 Oct 2024 12:32:23 GMT

Our data servers will be temporarily unavailable on Friday morning, 11^th October, starting at 08:00 UTC due to maintenance operations.

Sentinel-1 (after 1^st November 2021), Sentinel-3 and Sentinel-6 NRT acquisitions and data loaded from external sources will still be available in Syntool portals, but the other data that we host will be offline for the duration of the maintenance.

A second maintenance is planned in the afternoon starting 12:00 UTC and will cause the unavailability of our websites and Syntool portals for a short while.

As always, we will do everything we can to keep this unavailability as short as possible.

SEAScope update available!

Sylvain Herlédan — Tue, 01 Oct 2024 16:30:02 GMT

A new version of the SEAScope viewer application and its Python bindings has been released on https://seascope.oceandatalab.com

Recent developments have focused on improving the stability of the viewer and making it behave more consistently across platforms (changes are listed at the end of this news).

Also worth noting, data bundles and examples available on the website have been adapted to remove deprecated settings and conform to the file layout expected by recent versions of SEAScope.

In case you need background images at higher resolution, a tutorial has been added to explain where they can be downloaded and how you can use them in SEAScope.

Last but not least, the user manual has finally received a long overdue update, to describe the latest changes in SEAScope's graphical interface, explain step by step how to add data and provide some guidance on the more advanced features of the viewer (including useful code snippets!).
Be sure to check out the Tips and tricks annex, there might be some information in there that you will find helpful!

As always, don't hesitate to contact us by email (seascopenobotplease oceandatalab.com) or on the forum if you have any question, an idea for a new feature that the tool is missing, or a comment on SEAScope :)

Hurricane Helene captured by Sentinel-3B SLSTR (12µm wavelength) on 26^th September 2024 at 3PM UTC, then 8 hours later by Sentinel-1A SAR-C (roughness)

Improvements and changes

Timeline

"Nearest in day" timeline mode was difficult to use and has been removed
"Nearest" timeline mode modified to be more intuitive
Clicking on a year, a month or a day button in the timeline sets the time at 12:00:00 (before applying nearest mode, if active)
State of the timeline is saved when SEAScope shuts down and restored on next execution
Instantaneous granules (same start and end datetimes) are now supported by the search engine

Drawing

While moving a vertex when editing an existing polyline or polygon, only the vertex being moved is shown to avoid confusion
Invalid geometries are detected when editing a polygon (color of contour switches to red to notify the user)

User interface

Support for external file browsers added (OS-specific)
Support for using system dialog boxes to display messages (OS-specific)
Panel for annotation properties of type image has been modified to show more consistent information

Misc

Improved parallel data loading
Minimum length for a transect has been reduced from 50km to 2~2.5km
Validation of collection configuration files has been improved to be more consistent with SEAScope expectations
Various improvements in data import by drag’n'drop on the macOS SEAScope application icon
Clicking on the globe to select a granule rendered as streamlines, barbs or arrows is not possible anymore, only annotations and granules rendered as raster can be selected this way
Python bindings now support Python3.12

Bugfixes

Workaround for z-index problems created by mechanisms that change z-index values to avoid conflicts within a collection but ended up creating new conflicts between variables from different collections
Fix for crashes caused by NetCDF errors while reading input data
Fix multiple bugs related to how operating systems handle time
Fix bug wherein it was impossible to set the initial datetime to its default value in the Settings tab
Fix bug wherein the year and month buttons in the Granule info panel were doing nothing
Fix bug wherein the marker selection option was shown for incompatible rendering methods
Fix bug wherein the timeline was not updated after an exclusive selection (Shift + click) in the "Display data" menu
Fix bug wherein the timeline was not updated after changing the temporal coverage of an annotation
Fix bug wherein the timeline was not updated after adding or removing an annotation
Fix bug wherein loading an image file in an annotation property was impossible
Fix bug wherein floating menus that follow the mouse cursor were incorrectly positioned when the framebuffer and the window have different dimensions
Fix bug wherein deleting a shape while it was being edited lead to a crash
Fix bug wherein concurrent queries for loading the same field for different variables resulted in only one of variable being considered ready for render
Fix bug wherein the argument of the setAltitude Python binding was not interpreted with the correct unit
Fix bug on macOS wherein it was necessary to wait one minute before the connection between SEAScope and Python can be established again after a crash
Fix bug wherein the Python bindings sent GCPs and data fields in a different order than the one expected by the viewer for 1D granules

Internal wave propagation in SWOT SLA

dr fab — Thu, 05 Sep 2024 15:11:04 GMT

The SWOT 1-day revisit orbit enables to capture well physical phenomenon at small spatial and temporal scales. Here, the evolution of internal waves is well captured on the SWOT SSHA from the 250m L3 product. In this animatoin, time is going backward, as the main tidal period is slighlty larger than 1 day and the backward time better highlights the internal wave forward propagation.

If you are at the Altimetry Symposium in Montpellier, France (#30YPRA), come by the ESA stand to enjoy more videos.

https://seashot.odl.bzh/s/ffLutccfPL8

Epic Swim Maui

dr.fab — Wed, 31 Jul 2024 18:53:40 GMT

From July 8 to 26, a group of international open sea swimmers performed a #Swimtogether circumnavigation around Maui Hawaiian Island, called Epic Swim Maui. OceanDataLab has been a science partner of the expedition, providing real time wind, wave and current mapping around the island with swimmers trackers embeded to follow the swim. Additional ocean current in-situ measurements has been provided during the expedition based on drone and wave drifter deployements.
The ultimate goal of the expedition is to "Call to Action for Ocean Health".

Find out more on the event website https://www.epicswimmaui.com/

A two hour live was also broadcasted on Youtube
https://youtube.com/live/GJP6ev_tO_0?feature=share

Scheduled maintenance

Sylvain Herlédan — Sun, 28 Jul 2024 23:25:53 GMT

Our data servers will be temporarily unavailable on Thursday morning, 8th August, starting at 08:00 UTC due to maintenance operations.

Sentinel-1 (after 1st November 2021), Sentinel-3 and Sentinel-6 NRT acquisitions and data loaded from external sources will still be available in Syntool portals, but the other data that we host will be offline for the duration of the maintenance.

A second maintenance is planned in the afternoon starting 12:00 UTC and will cause the unavailability of our websites and Syntool portals for a short while.

As always, we will do everything we can to keep this unavailability as short as possible.

Natal pulse off Port Elizabeth

dr.fab — Fri, 24 May 2024 10:29:23 GMT

Natal pulses are trapped eddies formed in the Natal bight that are advected downstream and developing between the South African coastline and the Agulhas current, forcing the Agulhas curent to bend and deviate from its usual location along the shelf break. On this Sentinel-3 OLCI Chlorophyll-a concentration measurement, the center of such eddy is highlighted by its highest concentration and seen propagating westward passing offshore Port Elizabeth. Natal pulse can also trigger Agulhas current early retroflexion into the Antartic Circumpolar Current.

https://seashot.odl.bzh/s/1SZGc6MMUlw

Ocean Virtual Lab Hands-on training

Lucile Gaultier — Thu, 18 Apr 2024 19:29:22 GMT

On Friday April 19th 10:45, Lucile Gaultier and Guillaume Le Seach will be in Room 2.61 to show you how the Ocean Virtual Lab tools may help you for your research.

Come to play with the online OVL portal and the standalone tool SEAScope, interacting with Jupyter notebooks. We will get you started with Ocean Virtual Lab and give you tips to help get your hands wet with ocean data.

Tutorial slides for the trainings are available on ODL google drive directory .

Syntool - All the recent updates

Sylvain Herlédan — Tue, 16 Apr 2024 15:28:07 GMT

The long awaited SWOT calval portal

Rejoice! We have finally been allowed to make our Syntool portal for SWOT L3 data available publicly, so that everyone can have a look at SWOT Sea Surface Height (SSH), Sea Level Anomaly (SLA) and geostrophic current and visualize them along with the other products we have in Syntool (notably the OVL instance) to compare, assess and find synergies with all these data.

This new portal is available at https://swot-calval.oceandatalab.com

MIZ Svalbard 2024 experiment with OpenMetBuoy devices

After the Agulhas current, the marginal ice zone close to Svalbard! These buoys are everywhere! :)

A new experiment lead by the Norwegian Meteorological Institute (MET-Norway) is currently taking place to acquire more measurements of wave, temperature and sea-ice drift in the MIZ North-West of Svalbard: https://focus-arctic.com/svalmiz2024.html

The OpenMetBuoy devices deployed during the SvalMIZ 2024 experiment are an extended version of the open-source drifters (see source code and paper) able to measure wave, drifter-position, and temperature. Using an Iridium connection, they transmit hourly significant wave height, 30-minute temperature (1m height, surface layer (+10cm/0cm), snow-ice interface), and sea-ice drift (hourly GPS) in real-time.

These measurements appear in the OVL Syntool portal in near real time, based on the data stream kindly shared by MET-Norway, making it easier to locate the ice with satellite acquisitions while releasing and tracking devices during the deployment phase, and later on to identify interesting cases.

The new AICE product, a 10 days sea ice concentration forecast developed by MET-Norway and updated every day, has been included in the OVL Syntool portal for the occasion.

https://odl.bzh/2sDwZ5vD

ECMWF forecast

Last month we unfortunately lost access to our source of ECMWF 3-hourly 1/8° wind forecast data.

The Syntool products associated with this data source have been renamed so that the spatial and temporal resolutions appear in the label:

"10m wind barbs model ECMWF" => "10m wind barbs model ECMWF 1/8° 3-hourly"
"10m wind streamlines model ECMWF" => "10m wind streamlines model ECMWF 1/8° 3-hourly"
"10m wind speed model ECMWF" => "10m wind speed model ECMWF 1/8° 3-hourly"

As can be seen on the OVL Syntool portal, the latest data we have for these products date back to 22^nd March 2024: https://odl.bzh/FvzAKUp9

IFREMER gave us access to another product with a better spatial and temporal resolution, with data from 21^st August 2019 up to 2 days in the future.
It is worth noting that 3-hourly products are still useful for dates prior to 21^st August 2019, as they go back to 2013.

Aside from the improved resolutions, there are two major differences with the old 3-hourly products:

The processing mechanism used for ingesting the 3-hourly data did not support overwriting results, so we waited a few days before processing the input files to make sure only the more accurate analysis was published, which basically removed the forecasting aspect. The new products are processed with a different mechanism that can overwrite results, allowing us to publish forecasts shortly after they become available and replace results when newer forecasts are available.
For the 3-hourly 1/8° products we only produced images for a small selection of zoom levels: the hourly 1/10° files are ingested in Syntool as a single image at full resolution that is scaled on-the-fly to be displayed at all zoom levels

It took some time to set up the new processing chain and to ingest the backlog for this new product, but it is now available in the OVL Syntool portal:

https://odl.bzh/fyFMdeZ6

Updates in the PiMEP Syntool portal

Most of the salinity and auxiliary products available in the PiMEP Syntool portal have been updated, sometimes with a simple temporal extension:

SMOS SSS L2 v700 (DPGS)
SMOS SSS L3 v335/343 - 10 days (CATDS-CPDC)
SMOS SSS L3 v335/343 - Monthly (CATDS-CPDC)
SMAP SSS L2 v5.0 (JPL)
SMAP SSS L3 v5.0 - 8 Days running (JPL)
HYCOM model SSS [L3 v5.0 JPL] (NOPP)
SST OSTIA (CMEMS)
SST MicrowaveOI v5.1 (REMSS)
Daily ASCAT surface wind field (IFREMER)
Map of Sea Level Anomaly (CMEMS)
Roemmich-Gilson salinity (Scripps)
Gouretski and Reseghetti 2010" temperature EN 4.2.2 (UKMET)
Gouretski and Reseghetti 2010" salinity EN 4.2.2 (UKMET)
Levitus et al 2009" temperature EN 4.2.2 (UKMET)
Levitus et al 2009" salinity EN 4.2.2 (UKMET)
Geostrophic surface current DT streamlines (CMEMS)
Geostrophic surface current NRT streamlines (CMEMS)
CMORPH precipitation (NOAA CPC)

and sometimes with a full reprocessing using a newer version of the products:

SMOS SSS L3 v9 - 9 Days (CATDS-CECOS-LOCEAN)
SMAP SSS L2 v5.3 - forward look (RSS)
SMAP SSS L2 v5.3 - backward look (RSS)
SMAP SSS L3 v5.3 - 8 Days running (RSS)
HYCOM model SSS [L3 v5.3 RSS] (NOPP)
CCI SSS L4 Merged-OI v4.41 - 8-day running (ESA)
ISAS v8 monthly salinity at 5m (CMEMS)
ISAS v8 monthly temperature at 5m (CMEMS)

The following products have been removed from the PiMEP Syntool portal:

SMOS SSS L3 v3 - Monthly (ICDC)
SMOS SSS L3 v2 - Daily (CATDS-CECOS-IFREMER)
SMOS SSS L4 v2 - Weekly (CATDS-CECOS-IFREMER)

… while a new sea surface salinity product has been added:

Multi-Mission OI-SSS v2.0 - 7-day running (ESR, NASA)

We also expect an update of the in-situ products in the upcoming weeks.

https://odl.bzh/lS8x1dOZ

Please also check out the https://www.salinity-pimep.org/ website if you are interested in case studies and matchup data between all kinds of salinity measurements!

New CMEMS imagery service

As part of the migration to the new CMEMS Data Store, the old imagery service that we used to display rasters of temperature, salinity and sea water velocity from the Global Ocean Physics Analysis and Forecast product has been decommissioned.

We adapted our processing chains and Syntool portals to use the new imagery service, but it lacks a layer for the sea water velocity so we could only restore the temperature and salinity layers.

As a consequence, we removed the following products from the OVL Syntool portal:

Surface current model Mercator 1/12° (CMEMS)
30m velocity model Mercator 1/12° (CMEMS)
100m velocity model Mercator 1/12° (CMEMS)
300m velocity model Mercator 1/12° (CMEMS)
1000m velocity model Mercator 1/12° (CMEMS)
3000m velocity model Mercator 1/12° (CMEMS)

and from the WOC Syntool portal:

Surface current Mercator 1/12° (CMEMS)
Sea water velocity Mercator 1/12° [100m] (CMEMS)
Sea water velocity Mercator 1/12° [1000m] (CMEMS)

The lack of sea water velocity layers in the new imagery service has been reported to CMEMS support and they should restore these layers at later date so we should be able to reintegrate them in the future.

Please note that the sea surface current product represented as streamlines is hosted on our own servers and is therefore still available in Syntool portals: https://odl.bzh/25CgHJIk

Links to the OVL Syntool portal, always showing what's going on now

Ever wanted to have a link to the OVL Syntool portal that automatically selects the current datetime?

There is a small trick that will help you do that:

Open the OVL Syntool portal
Select the products you are interested in from the list in the catalogue panel on the left side of the screen
Pan and zoom the map to your area of interest
Copy the URL from the address bar of your web browser and paste it in a text file
In the pasted URL, look for a portion which matches the following pattern: date=YYYY-mm-ddTHH:MM:SS (for example date=2024-04-16T12:00:00) and replace it by date=NOW

That's it! When you open the modified URL, the OVL Syntool portal will show the same area of the map, with the same products selection but the timeline will be centered on the current datetime. Handy to have in your bookmarks :)

Here is an example with a selection of multiple forecast products.

Well, that's it for today! Let us know what you think about these new data and features, and don't hesitate to contact us if you have any question!

You can reach us by email syntoolnobotplease oceandatalab.com, on X/Twitter @oceandatalab or on the Syntool forum

If you are currently at EGU2024 in Vienna and want to know more about our tools (Syntool and SEAScope), there will be a hands-on training course on Friday April 19th 10:45 in room 2.61. Remember to bring your computer :)

Ocean Virtual Lab Hands-on training

dr.fab — Fri, 12 Apr 2024 16:10:52 GMT

A general presentation will be given on Tuesday April 16th at 12:10 and demo on ESA booth will happen on Tuesday April 16th at 16:45.

Furthermore, on Friday April 19th 10:45, Lucile Gaultier and Guillaume Le Seach will be in Room 2.61 to show you how the Ocean Virtual Lab tools may help you for your research.

Both the online OVL portal and the standalone tool SEAScope, interacting with Jupiyter notebooks, will be demonstrated.

Myriad of submesoscale features in the Arabian sea

Lucile Gaultier — Mon, 05 Feb 2024 13:29:04 GMT

This is the time of the year where submesoscale activity develops in the Arabian sea and can be observed using Chlorophyll-a from Sentinel-3 OLCI sensor.
Indeed, during winter, the Mixed Layer Depth deepens to reach typically more than 100m. The enhanced vertical mixing and nutrient influx during winter due to submesoscale processes boost biological productivity, unveiling abundant filamentation and frontogenesis.

https://seashot.odl.bzh/s/W-UTO-KzHAI

SWH along the Ultim routes

Lucile Gaultier — Sat, 27 Jan 2024 19:09:11 GMT

Two weeks after the start in Brest of the Arkea Ultim challenge around the world, the Ultims are now scattered over the indian ocean. The three leaders of the fleet trajectories have been drawn over the SWH from the MFWAM meteo France model (background image) and SWH observations from altimeters. Maxi Edmond de Rotschild is about to enter the Pacific Ocean and has encountered large waves this past few days. Maxi SODEBO Ultim 3 is sailing on a northern route and benefit from a calmer ocean. Streamlines in white represents the ocean currents from CMEMS.

https://seashot.odl.bzh/s/ZGA0AlOWol4

Cyclone Belal passing over Reunion Island

dr.fab — Tue, 16 Jan 2024 09:51:26 GMT

On January 15, La Reunion Island was placed under an unprecedented Purple alert as Cyclone Belal swept across its northern region, bringing winds exceeding 200km/h, intense rainfall, and anticipated high seas along the coastline. The Sentinel-1 sea surface roughness unmistakably reveals the cyclone's eye situated on the island's eastern side, while the SARAL altimeter indicates elevated wave heights on both sides of the eye.

https://seashot.odl.bzh/s/ZL0Msb9A5MU

Syntool - CMEMS update follow-up

Sylvain Herlédan — Fri, 08 Dec 2023 21:42:46 GMT

The L3 NRT product providing SSH (Sea Surface Height) and SLA (Sea Level Anomaly) for AltiKa, Cryosat-2, HY-2B and Jason-3 has evolved after the CMEMS service update performed on 30^th November.

Aside from changes in directory and file names, a recent improvement could be relevant to the data available in Syntool portals (1Hz products):

* Evolution of L3 1Hz processing: For missions for which upstream L2P data with a 20Hz posting rate is available, the L3 1Hz processing will be modified to use this upstream 20Hz data instead of the historical 1Hz data. The expected impact is a better coherence of L3 1Hz and 5Hz data, as well as a slight decrease of residual measurement noise, but without significant impact for users. The availability of data should also be slightly improved when approaching the coast.

The following datasets are concerned :
- cmems_obs-sl_glo_phy-ssh_nrt_h2b-l3-duacs_PT1S
- cmems_obs-sl_glo_phy-ssh_nrt_j3n-l3-duacs_PT1S
- cmems_obs-sl_glo_phy-ssh_nrt_s3a-l3-duacs_PT1S
- cmems_obs-sl_glo_phy-ssh_nrt_s3b-l3-duacs_PT1S
- cmems_obs-sl_glo_phy-ssh_nrt_s6a-lr-l3-duacs_PT1S

Starting 1^st December 2023 the SSH and SLA will use the new product distributed by CMEMS.

SSH L3 NRT Altika Saral (https://odl.bzh/LB1hgnuB)
SSH L3 NRT Cryosat-2 (https://odl.bzh/PFSXoCyc)
SSH L3 NRT HY-2B (https://odl.bzh/cTf9fwAX)
SSH L3 NRT Jason-3 (https://odl.bzh/dKWXRCwI)
SLA L3 NRT Altika Saral (https://odl.bzh/pzq0hkNR)
SLA L3 NRT Cryosat-2 (https://odl.bzh/7_vJN-4B)
SLA L3 NRT HY-2B (https://odl.bzh/ltT5wC4B)
SLA L3 NRT Jason-3 (https://odl.bzh/vf5exDfn)

SSH & SLA from SWOT nadir measurements are also available from 9^th November 2023 onwards:

SSH L3 NRT SWOT-Nadir (https://odl.bzh/eLC0Ar5Q)
SLA L3 NRT SWOT-Nadir (https://odl.bzh/qMLvG6Pt)

3 days of SWOT nadir NRT sea level anomaly (https://odl.bzh/oHyagigN)

Recent data updates in Syntool portals

Sylvain Herlédan — Fri, 01 Dec 2023 18:43:36 GMT

Sentinel-3 Chlorophyll-a reprocessing

Sentinel-3 Chlorophyll-a Near Real Time (NRT) data have been missing on Creodias for several time ranges earlier this year, notably between 28^th April and 9^th June 2023.

After several months of wait and long discussions with the support team, it has been deemed impossible to get these NRT data in a timely manner.
Leaving a large gap in the temporal coverage available in Syntool portals would not be satisfying, so we decided to use the Non Time Critical (NTC) version of these data as these are available on Creodias.

Having a mix of NRT and NTC data displayed together on the map could introduce visual artifacts and discontinuities that do not reflect any physical phenomenon, and therefore be a source of confusion.

To limit the mix of the two versions, we chose to replace the NRT with the NTC results from the end of our last reprocessing (1^st February 2022) until the end of July 2023 (the last missing NRT file was on 19^th July 2023).
That way there is not a day containing both NRT and NTC data, the time ranges for each version are clearly defined:

From April 2018 to 31^st December 2020: NRT
Between 1^st January 2021 and 31^st July 2023: NTC
From 1^st August 2023 onward: NRT

Sentinel-3 Chlorophyll-a from the L2 NTC data produced by Eumetsat (https://odl.bzh/ofzxlAOx)

CMEMS update

On 30^th November CMEMS updated several products that we process automatically and include in Syntool portals. A short description of the changes that could make the new data look different than the ones we processed so far (due to algorithm changes, additional input data and other sources of quality improvements) is available below.

Geostrophic current + NRT maps of SSH & SLA

Starting 1^st December 2023, the geostrophic surface current (https://odl.bzh/IcjvYiVC) rendered as streamlines in Syntool, the SSH map (https://odl.bzh/DvL3x1Jh) and the SLA map (https://odl.bzh/8eZQ7ogv) will use the new product distributed by CMEMS.

According to the CMEMS update description, the changes are:

* Use of L3 5Hz data for mapping Moreover, the input products to the calculation of the L4 products will evolve: the L3 1Hz product, historically used, will be replaced by the 5Hz version when it is available. The expected impact is a slight improvement of the L4 product quality, especially in areas where L3 5Hz availability is better than the 1Hz version.
* New mission SWOT-Nadir The measurements from the new mission SWOT-Nadir will be used in L4 GLO/EUR processing in addition to other active missions, resulting in improved product quality.

Total current

Starting 1^st December 2023, total surface current (https://odl.bzh/J80rDOPy) and total current at 15m (https://odl.bzh/MG_SXEa2) rendered as streamlines in Syntool will use the new product distributed by CMEMS.

The most notable change is the switch to a finer temporal resolution (from 6-hourly to hourly).

MFWAM wave analysis and forecast

Starting 1^st December 2023, the visualisation of variables from wave analysis and forecast will be based on the new version of the product distributed by CMEMS.

In Syntool portals the following products are impacted:

significant wave height (https://odl.bzh/fTPoY8kh)
first spectral partition (https://odl.bzh/9ZIksZo0)
second spectral partition (https://odl.bzh/rbcmK2bl)
wind waves partition(https://odl.bzh/4Hj-CrbO)
stokes drift (https://odl.bzh/sW1Hcw0n)

Relevant changes from the CMEMS update description:

* Upgrade wave model to IFS-ECWAM 47.R2 version
* Use of 6-hourly currents forcing (Upstream data change)
* Assess GLO12V4 current data compared to GLO12V3 (Upstream data change)
* HY2B & HY2C assimilation (Upstream data change)

New products

OSI-SAF sea ice concentration

Three NRT sea ice concentration products distributed by OSI-SAF have been added near the end of October:

Sea ice concentration from AMSR-2 using the OSI-SAF algorithm (https://odl.bzh/nVyJAv2B)
Sea ice concentration from AMSR-2 using the TUD (Technical University of Denmark) algorithm (https://odl.bzh/P5BP32Hg)
Sea ice concentration from SSMI using the OSI-SAF algorithm (https://odl.bzh/P5BP32Hg)

SWOT-Nadir NRT SWH & Wind speed

In addition to improvements on existing products, yesterday's CMEMS update brought a new dataset for NRT significant wave height and wind speed from SWOT nadir measurements.

3 days of SWOT nadir NRT significant wave height (https://odl.bzh/duS0Nd6W)

CIARAN Storm hitting Western Europe

dr.fab — Mon, 27 Nov 2023 21:27:40 GMT

On the morning of November 2nd, the CIARAN North Atlantic Storm struck Brittany, the western region of France, with wind speeds exceeding 200 km/h, resulting in substantial roof damage and the toppling of numerous trees.

Huge waves were recorded by conventionals and SAR altimeters, but also by the CFOSAT rotating wave spectrometer SWIM, which Fourth International Science Team Meeting is held this week from 28-30 November 2023 in Nanjing, China. https://cfosat-st-2023.sciencesconf.org/

https://seashot.odl.bzh/s/FVebiGqhDlQ

Velocity product assessement in Near Real Time

Lucile Gaultier — Fri, 24 Nov 2023 19:22:33 GMT

There is a routing experiment happening in the Gulf of Aden this week to assess new velocity products for routing applications. The red lines represent trajectories of ships crossing the area.The WOC BFN current is processed in Near Real time and compared with other surface velocity products such as GlobCurrent observations or forecasts from models. The velocity product is assessed using data from ships, in-situ drifters and dynamical structures detected in SST and chlorophyll. We are blessed with nice chlorophyll bloom and a low cloud coverage enabling many synoptic analyses using Sentinel-3 SLSTR and OLCI data.

https://seashot.odl.bzh/s/xTrmu73mxUE

Wealth of dynamic processes from meso to submesoscales

LucileGaultier — Mon, 23 Oct 2023 17:38:09 GMT

We were blessed with a very clear sky over Australia's Northwest few days ago. The SST data from Sentinel3 SLSTR sensor reveals mesmerizing mesoscale eddies along the famous Leeuwin warm currents. Zooming in in the areas circled in white, the SST observation unveiled exquisite submesoscale intricacies and a myriad of filamentation.

https://seashot.odl.bzh/s/PHnOYokayRs

SMOS L2 full reprocessing

Sylvain Herlédan — Mon, 23 Oct 2023 12:43:15 GMT

Last week we published SMOS L2 wind data that we processed using a nominal masking policy: we only included pixels flagged as "good" or "fair" quality, but doing so removed a lot of pixels on the outer areas of the swaths, around islands, in a rather large buffer following the coastline and when crossing the path of a storm.

Storm trajectory and wind radii from IBTrACS and SMOS L2 wind data with the nominal masking policy

We received feedback stating that most pixels flagged as "poor" quality can still offer insightful information in the aforementioned cases and could therefore be of interest, at least for visualisation purposes. The tradeoff is that pixels with really poor quality are also shown, this is notably the case with the pixels closer to the coastline or over ice.

Storm trajectory and wind radii from IBTrACS and SMOS L2 wind data with the relaxed masking policy
(https://odl.bzh/Iaa2cgLj)

The complete archive (from 2010 until now) has been reprocessed with the relaxed masking policy.

Please note that you may need to refresh your web browser cache to load the new version of the images if you browsed this product during the past week.

GHRSST SST help assess ocean surface dynamics

Lucile Gaultier — Thu, 19 Oct 2023 16:26:43 GMT

Within the WOC project, a new method has been developed to automatically retrieve SST fronts and use them to assess the position of structures in different velocity products. Here SST fronts have been derived from SEVIRI L3 SST. Fronts have been flagged using their probability, dark blue represent the first 16% most probable one and light blue fronts corresponds to the next percentile (16 to 33%)
The method is illustrated in a poster (New ocean dynamics assessment strategy through SST frontal detection) and a video presentation made for the GHRSST24 meeting (https://www.ghrsst.org/ghrsst-news/24th-international-science-team-meeting-ahmedabad-india-ghrsst-xxiv-ghrsst24/). Materials are available on the Eumetsat moodle for enrolled users and will be published after the meeting.

https://seashot.odl.bzh/s/2lG0ve_6YWk

High speed wind

Sylvain Herlédan — Fri, 13 Oct 2023 23:24:18 GMT

Following discussions that took place during the MAXSS workshop in April 2023, we decided to improve the consistency of the visualization we offer in our online portals for wind products that contain high speed values.

Faozi Said (NOAA) designed a nice colormap that makes it easy to distinguish wind speed categories and shared it with us (thanks again!), so we used it to reprocess a few products that we already had in Syntool and for processing new data that were previously missing from our catalogue.

SMOS L2 wind NRT

The L2 product produced by the SMOS Wind Data Service has been added to our online visualisation portals.

The whole data archive has been included using the reprocessed files (REPR) between January 2010 and May 2021, and the operational files (OPER) from June 2021 onward. New data are ingested as soon as they are detected by our processing chains (checking every hour).

Please note that satellite acquisitions from this product cannot be selected by clicking on the map, but selection is still possible if you expand the timeline control and click the acquisition's temporal coverage (blue line or dot, depending on the duration), allowing you to get more details, including a link to the original file.

3 days of SMOS L2 wind - https://odl.bzh/sMUoDiAy

SAR L2C wind for tropical cyclones

Our portals also contained a wind product produced by IFREMER using SAR acquisitions. Until now we only processed the files originating from Sentinel-1 acquisitions, but the product also contains data derived from RadarSat-2 measurements.

Previous results have been removed (at least from the OVL portal) and all the data available to this day (Sentinel-1 and RadarSat-2) have been processed with the new colormap.

This product is ingested automatically with a 48-hour delay to make sure the L2 files are fully consolidated when we process them (L1 used as input for the L2 wind production can be published a bit late and lead to incomplete scenes).

SAR wind seen by Sentinel-1 and RadarSat-2 - https://odl.bzh/Iwb-KGkj

SMAP L3 wind NRT

We have been processing the SMAP L3 wind maps from Remote Sensing Systems for several years so we already had the complete product in our portals… but not with the new colormap.

Here again, the previous results have been removed (for the OVL portal) and the full data archive has been processed using the "final" version of the product from 2015 to 3^rd May 2023, then the NRT version.

NRT files are built incrementally, so new data are processed with a 48-hour delay to avoid incomplete files.

24 hours of SMAP L3 wind - https://odl.bzh/jYJgg5k5

AMSR-2 L3 wind NRT

Remote Sensing System also provides an AMSR-2 L3 wind product and it is now available in the OVL portal.

The full data archive has been ingested using the "final" version of the product from 2012 to 9^th October 2023, then the NRT version.

As with the SMAP product, NRT files are built incrementally, so new data are processed with a 48-hour delay to avoid incomplete files.

24 hours of AMSR-2 L3 wind - https://odl.bzh/_gooOcJh

CyGNSS L2 wind

A few months ago we added a sample of CyGNSS L2 wind data (year 2020) but at that time we used a different colormap: in the OVL portal you can now visualise these data with the same colormap as the other products mentioned in this news :)

Sample of CyGNSS L2 wind - https://odl.bzh/RXsnnx8Z

… and more!

In addition to the new products and data reprocessing, you may notice small changes in the user interface of our portals.

In Syntool it is possible to display only a subset of datasets (a.k.a. acquisitions, granules) by defining a pattern that is applied to dataset identifiers: datasets whose identifier matches the pattern are displayed on the map, the others are discarded.
This is particularly useful when visualising products composed of data from multiple platforms, such as products based on Sentinel satellites with A/B (and soon C/D) variants.

Users can apply their own patterns and filter results by clicking on the icon (between the product's units and the opacity gauge in the "Display data" menu), providing a pattern in the input field that appears and pressing Enter to validate.

For example, the identifiers in the SMAP wind product conveniently include information regarding the direction of the pass: identifiers end with "_asc" for ascending passes and with "_desc" for descending passes. We can therefore apply a pattern to display only ascending passes:

The major issue with this mechanism is that the information included in identifiers can change from product to product, and they can be chosen arbitrarily so there is no surefire rule.

To make things easier, we added a few predefined filters based on this mechanism so that users can apply the most useful patterns without prior knowledge of the identifiers' structure.
For instance it is now possible to visualize Sentinel-1 SAR roughness for a specific platform, operational mode and polarization:

We hope you will find these new data and features useful :) Enjoy and let us know what you think (syntoolnobotplease oceandatalab.com)!

Scheduled maintenance

Sylvain Herlédan — Wed, 04 Oct 2023 12:17:15 GMT

Our data servers will be temporarily unavailable on Friday morning, 6th October, starting at 08:00 UTC due to maintenance operations.

Sentinel-1 (after 1st November 2021), Sentinel-3 and Sentinel-6 NRT acquisitions and data loaded from external sources will still be available in Syntool portals, but the other data that we host will be offline for the duration of the maintenance.

A second maintenance is planned in the afternoon starting 12:00 UTC and will cause the unavailability of our websites and Syntool portals.

As always, we will do everything we can to keep this unavailability as short as possible.

Synoptic analyses in the Gulf Stream

Lucile Gaultier — Sat, 30 Sep 2023 18:40:47 GMT

A clear day is a perfect day for synoptic analyses in the Gulf Stream. Strong current and eddies have been drawn using Syntool drawing tools. They have been improved with additional features, touch screen capabilities and more intuitive controls. Some features have been drawn using Chlorophyll-a from Sentinel-3 OLCI and others using SST from Sentinel-3 SLSTR. You can play with transparency on the OVL to look at the signature of the ocean dynamics on both geophysical variables. The streamlines represent the geostrophic current derived from Altimetry (CMEMS/GlobCurrent), some sharp turns and small eddies are missed due to the lack of spatio-temporal resolution.

https://seashot.odl.bzh/s/Rp44i9wBZeY

Swell tracking by Sentinel-1 WV & IW mode

dr.fab — Sat, 23 Sep 2023 10:22:57 GMT

As part of the ongoing ESA SARWave project, Sentinel-1 TOPS mode data are processed into cross-spectra to estimate wave parameters that can then be integrated in the exiting Swell tracking system originaly based on wave mode only. Since North atlantic is mostly covered by Sentinel-1 while in TOPS mode and not wave mode, this is expected to bring a step change in the swell tracking to the European Shelves, North East Atlantic and Arctic coastlines

Dot color indicates the swell period from 10s (blue) to 20s (red) and diameter is proportional to the observed swell significant height.

See more about the SARWave project at https://www.sarwave.org/es

https://seashot.odl.bzh/s/lB1jQknrcuw

Contains Modified Copernicus Sentinel data 2021.

Devastating floods in Lybia discharge into the sea

dr.fab — Mon, 18 Sep 2023 21:08:37 GMT

On September 10, 2023, Storm Daniel unleashed torrential rains and flooding in Libya, resulting in significant loss of life in the country.

https://public.wmo.int/en/media/news/storm-daniel-leads-extreme-rain-and-floods-mediterranean-heavy-loss-of-life-Devastating floods in Lybia discharge into the sea posted on Seplibya

The floods have led to a substantial influx of sediment into the Mediterranean Sea, as evident from the Sentinel-2 imagery captured on September 12. Subsequently, these sediment-laden waters will be carried by surface currents within the Mediterranean

https://seashot.odl.bzh/s/VS_rRfZyOKw

Contains Modified Copernicus Sentinel data 2023.

New SEAScope release available

Sylvain Herlédan — Tue, 12 Sep 2023 14:03:27 GMT

We received very helpful feedback from our users during the workshops and trainings that took place these past few months, and this feedback did not go to waste! Based on your inputs we implemented a lot of small changes and bugfixes to improve your SEAScope experience :)

You can download the latest version of the viewer and the Python bindings on the SEAScope website.

We are always eager to get feedback from our users, so don't hesitate to let us know what you think of this new version!

You can send us an email (seascopenobotplease oceandatalab.com) or post a message in the SEAScope forum.

It is now easier to display Sentinel-2 L1C data at full resolution in SEAScope!

More details on what changed in this new version:

Improvements

Performance

GPUs have limits on the dimensions of the data they can load in a texture, which made it impossible for some users to display granules at full resolution because until now SEAScope always sent data in one go, as a single block of memory whose dimensions could exceed the GPU limits. This was notably the case with Sentinel-2 granules that SEAScope could only display at full resolution on computers with a high-end GPU.

For the RASTER and RAWRGB rendering modes, the application now detects if the GPU is able to load the whole data in a single texture and if that is not the case it splits the data into smaller chunks, allowing users to display these granules at full resolution despite their GPU specifications.

Please note that the data still have to fit into memory, so there are still some minimal requirements to be met for displaying large, high resolution data in SEAScope.
Performance in operations related to the manipulation of granule metadata have been improved, which should translate in slightly faster search requests when looking for granules to display.

Timeline

A default timestep is added automatically (you don't have to define it in the configuration): it moves the current datetime by increments of 1/3 of the selected timespan.
Scrolling over the timeline used to shift the current datetime by 1/4 of the timespan: it will now shift it by 1/3 of the timespan to match the default timestep.
The layout of the timestep control has been modified to avoid confusion with the timespan control:

becomes

Custom timesteps can be selected by clicking on the "cogs" icon:

Annotations

The temporal coverage of new annotations was initialized with a -12h/+12h window centered on the current datetime: when you create new annotations with the latest version of SEAScope they will now have a temporal coverage matching the selected timespan.
There were some cases wherein users had the impression that what they drew disappeared after validating the shape (either creating a new annotation or editing an existing one). This happened when the variable owning the annotations was configured to be displayed below other data or when its visibility had been disabled. SEAScope now brings the variable to the front and makes it visible automatically upon validation of a shape.

Keyboard shortcuts

A shortcut has been added to delete selected annotation with the Delete or the Backspace keys.
Exclusive selection now works in the "Display data" menu with Shift + (same as in the catalogue).
Shortcuts for navigating the timeline have been simplified: the previous timestep button can now be activated with ← (instead of Shift + ← ) and the next timestep button with → (instead of Shift + → ).

Misc

The camera position is now saved when you close SEAScope and is restored next time the application starts.
SEAScope now detects identifier conflicts when creating a new collection from Python bindings: in such case it refuses to create the collection and notifies Python that the creation failed.
The amount of significant digits displayed in number boxes has been increased from 7 to 10.

Bugfixes

Fix bug wherein an unused copy of the data was kept in memory.
Fix bug wherein it was not possible to extract data using a 1D granule as an extraction mask if this granule was created through the Python API.
Fix bug wherein SEAScope would throw an error when reading a lot of information from the index or the annotations databases.
Fix bug wherein SEAScope would crash or fail to import annotations from Syntool if their temporal coverage is not finite.
Fix bug wherein SEAScope would crash if a collection configuration contained a misspelled field name or if the input file did not contain the expected field.
Fix bug wherein only a single user could access SEAScope on macOS machines hosting multiple accounts.
Fix bug wherein SEAScope would crash on Windows with dates before 1970-01-01.
Fix multiple bugs wherein zooming-in would result in "jumps" to unexpected locations on the globe.
Fix bug wherein the zoom speed modifier (by using the left Ctrl key) was ignored.
Fix minor memory leaks related to SQLite prepared statements.
Fix bug wherein SEAScope could crash due to a race condition while checking if a granule is already indexed.

Eye of Cathegory 5 Major Hurricane Lee

dr.fab — Fri, 08 Sep 2023 09:42:37 GMT

Cathegory 5 Major Hurricane Lee is raging in the tropical atlantic on sept 8, with over 150 knots of peak wind speed, and heading west towards the US east coast. This Sentinel-3 SLSTR cloud top temperature image is showing the cold high altitude clouds rising and rotating fast around the warm eye at the center. The rising air in a hurricane can extend to high altitudes within the storm. As the air ascends, it expands and cools due to decreasing air pressure at higher altitudes. This cooling leads to the formation of clouds, and as the air continues to rise, the clouds can reach higher altitudes, typically more that 10 000m, where temperatures are colder.
Sentinel-3 SRAL altimeter on the same platform is coincidently measuring the high waves (over 10m height) under the satellite track.

https://seashot.odl.bzh/s/oyfNT4KNf3Q

Contains Modified Copernicus Sentinel data 2023.

Leeuwin current revealed by Himawari

Lucile Gaultier — Mon, 28 Aug 2023 17:08:45 GMT

The warm Leeuwin current is often a good place to observe small scale eddies and recirculation as it flows southward and encounters colder waters. The cloud coverage is often low in the area and one can benefit from Infra Red observation of good quality. The animation shows Himawari observations over five days. Himawari data are now available on OVL portal in NRT such as GOES 16-18, SEVIRI, SEVIRI Indian to have a global coverage.

https://seashot.odl.bzh/s/JfSlfL8hi_I

Tropical Cyclone Hilary heading to Baja California

dr.fab — Tue, 22 Aug 2023 10:14:52 GMT

Cat-4 Tropical cyclone Hilary as observed on August 19, 2023 by Sentinel-1 SAR, Sentinel3 SLSTR and Jason 3 altimeter while heading toward Mexican coast and California.
The well formed Hurricane eye and high seas on the right of the eye are typical of such Cathegory 4 Hurricane, having benefited from particulary warm upper ocean in the tropics to load with moisture.

Heavy rain and @ https://www.reuters.com/world/us/tropical-storm-hilary-releases-fury-southern-california-2023-08-21/

https://seashot.odl.bzh/s/XhNPOiNOxD8

Contains Modified Copernicus Sentinel data 2023.

Phytoplankton bloom in Barents sea

Lucile Gaultier — Mon, 14 Aug 2023 12:11:18 GMT

Huge phytoplankton bloom followed by a very clear sky captured by Sentinel 3-A/B OLCI sensors on the 3rd of August. The L2 Chlorophyll-a products reveal submesoscale dynamics in the area, Small displacements of structures are visible looking at the animation using S3A and S3B 40min apart observations.

https://seashot.odl.bzh/s/tK8X8fPV1pQ

Large oil spill in the Bay of Campeche

dr.fab — Tue, 01 Aug 2023 16:21:25 GMT

A large oil spill is spotted on Sentinel-2 sun glitter true color imagery, on July 6 in the Bay of Campeche, near the site of an incident at a Pemex Offshore plateform.

Read mode at https://gcaptain.com/two-killed-as-fire-engulfs-mexican-oil-platform/

https://seashot.odl.bzh/s/NhwBz4zly7U

Copernicus True Color Sentinel-2 data 2023 from Sinergise web server.

ESA Ocean Training Course 2023

dr.fab — Fri, 23 Jun 2023 15:12:37 GMT

This year again, the ODL team has been involved in the organization of the ESA Ocean Training Course 2023 which involved a series of weekly online theoretical and hand's on training followed by 10 days at sea onboard the tallship Statsraad Lehmkuhl from Maputo, Mozambique for the sail-voyage to Cape Town, South Africa from 3-13 January 2023, crossing the Agulhas current region and being involved in practical projects using both in-situ and satellite observations.

During the 14 weekly online modules, our experts will lead or participate in several interactive lectures that will provides students a hands-on training for some processing techniques to estimate geophysical parameters, as well as demonstrate synergies that exist among various ocean remote sensing datasets:

Explore synergies using various remote sensing data
Using satellite data to investigate ocean surface currents and transport
How to monitor ocean waves from space and their interaction with currents.
Wave-Current interaction: Internal waves from space
Wave-Current interaction: How does ocean circulation impact waves?
Sea ice extent, deformation and drift in the Arctic Ocean

These interactive lectures (and others too!) are based on ODL tools Ocean Virtual Lab and SEAScope

Scheduled maintenance

Sylvain Herlédan — Wed, 14 Dec 2022 12:22:29 GMT

Our data servers will be temporarily unavailable on Friday, 16th December, starting at 18:00 UTC due to maintenance operations.

Sentinel-1 (after 1st November 2021), Sentinel-3 and Sentinel-6 NRT acquisitions and data loaded from external sources will still be available in Syntool portals, but the other data that we host will be offline for the duration of the maintenance.

As always, we will do everything we can to keep this unavailability as short as possible.

Scheduled maintenance

Sylvain Herlédan — Wed, 02 Nov 2022 20:04:22 GMT

Our data servers will be temporarily unavailable on Wednesday, 9^th November, starting at 08:00 UTC due to maintenance operations.

Sentinel-1 (after 1^st November 2021), Sentinel-3 and Sentinel-6 NRT acquisitions and data loaded from external sources will still be available in Syntool portals, but the other data that we host will be offline for the duration of the maintenance.

As always, we will do everything we can to keep this unavailability as short as possible.

OVL workshop 2022 - Training material

Sylvain Herlédan — Mon, 13 Jun 2022 23:07:01 GMT

The material used during the training sessions of the OVL workshop held in Brest on 14^th-15^th June will be uploaded and made available in this article.

14^th June

Ocean circulation notebooks: https://ftp.odl.bzh/odl/events/ovl_workshop_2022/ocean_circulation_notebooks.zip
Python module with herlper methods required for the notebooks: https://ftp.odl.bzh/odl/events/ovl_workshop_2022/seascope_export.py
SEAScope installation instructions: https://ftp.odl.bzh/odl/events/ovl_workshop_2022/SEAScope_instruction.pdf
Ocean circulation interactive lecture: https://ftp.odl.bzh/odl/events/ovl_workshop_2022/Interactive_lecture_ocean_circulation.pdf
Ocean waves interactive lecture: https://ftp.odl.bzh/odl/events/ovl_workshop_2022/interactive_lecture_wave_spectra.pdf
Wave spectrum from Sentinel-1 observation notebook: https://ftp.odl.bzh/odl/events/ovl_workshop_2022/S1_spectra_from_syntool.ipynb
Wave spectrum from Sentinel-2 observation notebook: https://ftp.odl.bzh/odl/events/ovl_workshop_2022/S2_Swell_2022.ipynb

15^th June

Synoptic chart interactive lecture: https://ftp.odl.bzh/odl/events/ovl_workshop_2022/Interactive_lecture_synoptic_chart.pdf
Fronts detection notebook: https://ftp.odl.bzh/odl/events/ovl_workshop_2022/fronts_detection_notebooks.zip
Swell refraction notebook: https://ftp.odl.bzh/odl/events/ovl_workshop_2022/SWELL_current_refrac.ipynb
Surface current field import to SEAScope notebook: https://ftp.odl.bzh/odl/events/ovl_workshop_2022/BFN_to_SEAScope.ipynb

Living Planet Symposium 2022 - Training material

Sylvain Herlédan — Fri, 27 May 2022 05:35:19 GMT

All the files required for the training sessions that we gave about OVL visualisation and analysis tools during the LPS 2022 are now available online: if you could not attend conference or if you were not available during the OVL training sessions you can still get the next best thing :)

You can get the content of the USB key with the training material here: https://ftp.odl.bzh/odl/events/lps_2022/lps_2022_usb_key.zip

And you can also grab the slides that we used during the sessions: https://ftp.odl.bzh/odl/events/lps_2022/LPS22_Training.pdf

We tried to make the slides as self-explanatory as possible, but do not hesitate to contact us if you have any question. All feedback is welcome!

Edit 2022-05-30T16:00:00Z We noticed that the USB key contains two Sentinel-3A SLSTR SST granules that are incompatible with the associated rendering configuration: trying to visualise these granules leads to a crash of the application because they do not contain the expected variables.

If you got a USB key during the LPS 2022 or if you downloaded the zip archive with the content of the USB key prior to the date of this message, please remove the following directories to avoid this problem:

data/sentinel-3a_slstr_sst/S3A_SL_1_RBT____20190810T074200_20190810T074500_20190811T120033_0179_048_049_3420_LN2_O_NT_003.SEN3
data/sentinel-3a_slstr_sst/S3A_SL_1_RBT____20190810T074500_20190810T074800_20190811T120142_0179_048_049_3600_LN2_O_NT_003.SEN3

Living Planet Symposium 2022

dr.fab — Mon, 16 May 2022 15:33:07 GMT

ODL will be present at the upcoming Living Planet Symposium in Bonn, and will showcase the Ocean Virtual Laboratory in the Open Earth Forum demo area and in Classroom trainings.

Open Earth Forum (OEF) demo area
"Ocean Virtual Laboratory online and standalone tools demo"

Tuesday May 24, 12:55 to 13:25
Thursday May 26, 12:45 to 13:20

Classroom trainings (1.5 hours)
"Ocean Virtual Laboratory online and standalone tools tutorial/hands'on training"

Tuesday May 24, 17:00 (room H-1 03)
Wednesday May 25, 12:30 (room H-1 05)

Science for Society corner
"World Ocean Circulation (WOC) unveiled with the Ocean Virtual Laboratory"

Wednesday May 25, 18:00

See OVL tools overview Ocean Virtual Laboratory (OVL) overview

Ocean Virtual Lab Workshop

Lucile Gaultier — Fri, 06 May 2022 18:23:54 GMT

Latest Ocean Virtual Laboratory tools in action, applied to ocean surface waves and currents analysis with hands-on training.

Analyzing and understanding the complexity of Ocean surface waves and currents together with their interactions, require the use of complementary multi-sensor satellite, in-situ and model output data. Such analysis will be demonstrated with hands-on training on participants' own computers using the Ocean Virtual Laboratory open source online and standalone tools developed for the last 10 years under ESA support.

The Workshop will present the synergy between a wide variety of observations to better understand upper layer ocean dynamics. During the two days we will cover:

How can we observe the ocean today
Observation of the surface currents
Observation of the waves
Observation of Wave-currents interaction
How to use the OVL tools for visualisation and analysis of these observations

The workshop will be mainly interactive, looking at and analysing a wide variety of data using the OceanVirtualLab Visualisation tools:

Online web portal (ovl.oceandatalab.com)
SEAScope standalone application (can be downloaded from seascope.oceandatalab.com)

For more information see the Ocean Virtual Laboratory (OVL) overview.

We are limited to 40 participants.
The workshop is free for the selected participants (no participation fees).
Participants are expected to bring and work on their own laptop. A mouse is recommended to enjoy the visualisation tools.

Registration is closed.

Agenda Tuesday 14th

Time	Subject	Description
09:00	Welcome coffee
09:30	Introduction	Agenda, brief presentation of tools and themes
09:45	Introduction to OVL portal	Discover the web portal visualisation tools
10:15	Observation of the ocean	Lecture on the observation of the ocean from space
11:00	Coffee Break
11:15	Data synergy on OVL	Presentation of SEAShot and how to save and share interesting test cases
11:45	Install SEAScope	Brief Presentation of SEAScope analyses and Visualisation tool, Installation and add data
12:15	Lunch Break
13:45	Observe currents	Lecture on the observability of ocean surface current
14:20	Retrieve currents from SSH and wind	Learn to use SEAScope and perform analyses. Compute geostrophic and Ekman current using a python notebook and SEAScope
15:15	Coffee Break
15:30	Observe waves	Lecture on the observability of waves
16:00	Wave spectrum computation	Compute wave spectrum using remote sensing observation. Test case will use SEAScope and python notebooks
17:30	End of day

Agenda Wednesday 15th

Time	Subject	Description
09:00	Synoptic analyses using OVL and SEAScope	Draw a synoptic chart on OVL, retrieve automatically frontal structures using python notebooks and SEAScope
10:00	Convert into SEAScope data format	Presentation of SEAScope data converter and installation
10:30	Coffee Break
10:45	Wave Current Interaction	Learn the basics of wave current interaction and simulate wave rays propagation in the presence of current using python notebooks and SEAScope
11:45	Conclusion and Discussion	Feedbacks on the Visualisation and Analysis tools used during the workshop
12:30	End of Workshop

Scheduled maintenance

Sylvain Herlédan — Mon, 02 May 2022 15:40:23 GMT

Our data servers will be temporarily unavailable on Wednesday, 11^th May, starting at 07:00 UTC due to maintenance operations.

Sentinel-1 (after 1^st November 2021), Sentinel-3 and Sentinel-6 NRT acquisitions and data loaded from external sources will still be available in Syntool portals, but the other data that we host will be offline for the duration of the maintenance.

As always, we will do everything we can to keep this unavailability as short as possible.

Download links available in Ocean Virtual Laboratory

Ziad El Khoury Hanna, Sylvain Herlédan — Tue, 11 Jan 2022 18:20:43 GMT

Starting January 2022, we provide data access information for all the publicly available content that we publish automatically in the Ocean Virtual Laboratory portal (OVL).

Some of the files that we process may become unavailable after some time due to consolidation or reprocessing performed by the data provider, therefore direct download links can become obsolete. In such case the download links are not updated because our automated processing chains ingest the data only once, but we provide a link to the directory where you should be able to quickly find the new version of the file.

Data access information includes download links (direct link when possible), registration links (when relevant), as well as notes about how you can get access to the data in case the procedure is not trivial. These links and notes are displayed in the "Selection info" menu that appears on the right side of the screen when you select an acquisition/granule on the map:

1/ Select an acquisition/granule on the map.
2/ The "Selection info" menu containing a "Data access" section with notes and links

Please note that some acquisitions/granules cannot be selected directly on the map (global data for example), so you need to use the detailed timeline to select them.

In order to show the detailed timeline, first click on the "Up" arrow located just above the timeline component:

1/ Click on the "Up" arrow to extend the detailed timeline

Now that the detailed timeline has been extended, you can see that it contains lines representing the time coverage of each acquisition/granule that intersect the selected time window. For acquisitions/granules with a very short time coverage, the line is replaced by a dot to make it easier to spot and to interact with.

Placing the mouse cursor over a line or a dot in the detailed timeline will display some information about the associated acquisition/granule, so you can check.

Clicking on a line or a dot will select the associated acquisition/granule and the "Selection info" menu will appear on the right side of the screen with the data access links (if available) and other information:

2/ Click on the line (or the dot) representing the acquisition/granule time coverage to select it and open the "Selection info" menu

Let us know what you think about this new feature and don't hesitate to contact us (on the forum or by email at syntoolnobotplease oceandatalab.com) if you have questions about data access in OVL!

Sentinel-1 data in OVL: it's back!

Sylvain Herlédan — Wed, 22 Dec 2021 20:22:19 GMT

As some users have probably noticed, we have been struggling to ingest Sentinel-1 data in our web portals lately: download speeds from our usual provider were already a bottleneck in the past, forcing us to process data only in a selection of areas, but these speeds have dropped down dramatically near the end of August, up to the point where it took us more time to fetch the data than it took the satellite to acquire them.

As we were unable to keep up, we decided to stop the ingestion of Sentinel-1 data at the end of October and to look for another solution. And… Here it is!

Thanks to the sponsorship of the ESA Network of Resources we have been able to transfer our processing chains on Creodias, where we can access Sentinel-1 data in a timely manner: no more bottleneck, which means less delays… and global data!

Please note that the data processed on Creodias will appear as new products in the Syntool portals:

Up to 31^st October 2021, the products remain the same as before,

no distinction between Sentinel-1A and Sentinel-1B in Syntool
data are processed only for a selection of areas
we processed SAR roughness only for Level-1 GRD products in IW and EW sensor modes (VV or HH polarisation)

Starting 1^st November 2021,

we distinguish Sentinel-1A and Sentinel-1B data
we process wind speed and direction for all Level-2 OCN products
we process SAR roughness for Level-1 GRD products in IW, EW and SM sensor modes (VV or HH polarisation) that are returned by Creodias Finder when looking for the "water" keyword

We will prioritize the processing of NRT data so you can have new acquisitions as soon as possible, but we will also progressively ingest the backlog between 1^st November and today.

Enjoy :)

Some screenshots of yesterday's data available in the OVL portal (https://ovl.oceandatalab.com):

Sentinel-1A SAR roughness (https://odl.bzh/Wkb_-kSY)

Sentinel-1B SAR roughness (https://odl.bzh/NYnAR80c)

Sentinel-1A wind speed (https://odl.bzh/sbPdT31W)

Sentinel-1B wind speed (https://odl.bzh/6QERLrl4)

Scheduled maintenance

Sylvain Herlédan — Mon, 15 Nov 2021 11:34:32 GMT

Our data servers will be temporarily unavailable on Thursday, 18^th November, starting at 08:00 UTC due to maintenance operations.

Sentinel-3 NRT acquisitions and data loaded from external sources will still be available in Syntool portals, but the other data that we host will be offline for the duration of the maintenance.

As always, we will do everything we can to keep this unavailability as short as possible.

Scheduled maintenance

Sylvain Herlédan — Tue, 21 Sep 2021 09:32:11 GMT

Our data servers will be temporarily unavailable on Friday, 24th September, starting at 07:00 UTC due to maintenance operations.

Sentinel-3 NRT acquisitions and data loaded from external sources will still be available in Syntool portals, but the other data that we host will be offline for the duration of the maintenance.

As always, we will do everything we can to keep this unavailability as short as possible.

Scheduled maintenance

Sylvain Herlédan — Mon, 08 Mar 2021 15:35:32 GMT

Our data servers will be temporarily unavailable on Wednesday, 10th March, starting at 09:55 UTC due to maintenance operations.

Sentinel-3 NRT acquisitions and data loaded from external sources will still be available in Syntool portals, but the other data that we host will be offline for the duration of the maintenance.

As always, we will do everything we can to keep this unavailability as short as possible.

New features in Syntool!

Ziad El Khoury Hanna — Thu, 04 Mar 2021 17:03:50 GMT

If you are a regular user of our visualisation portals you may have noticed some subtle changes in the interface today: after several months of development we think the latest version of Syntool is ready and we upgraded all our portals so they could benefit from the new features.

The most notable change is the products list: it now has a search filter and offers an option to decide how products will be grouped together.

The text you write in the search field will be used as a filter so that the list will only show the products whose label contains the text you typed.

In the OVL portal (https://ovl.oceandatalab.com) we also added flags to describe all the products based on a predefined set of criteria (platform, sensor, data type, etc…). The search filter is also applied to these tags to help you find all the products that may be relevant to your query.

These tags can also be used to reorganize the list of products: clicking on the button located on the left of the search field will display a list of criteria you can choose from to regroup products in a way that is more meaningful for your use case.

We also fixed some minor bugs, harmonized the style of the user interface and added little helpers that should improve your experience with Syntool.

We hope you like it! Do not hesitate to tell us what you think about these changes and to let us know if there are new features you would like to see in Syntool portals: you can leave us a message on Twitter (@oceandatalab), on our forum (https://forum.oceandatalab.com/syntool) or directly by email (feedback-syntoolnobotplease oceandatalab.com).

If you want more details about the changes we implemented, go to one of our portals (https://ovl.oceandatalab.com for example) and click on the "What's new" button in the top-right corner of the screen (yes, that's a new feature too!)

Scheduled maintenance

Sylvain Herlédan — Tue, 06 Oct 2020 15:15:23 GMT

Our servers will be temporarily unavailable on Friday, 9th October, starting at 16:00 UTC due to maintenance operations.

All our websites (including this one) and services (Syntool, SEAScope) will be offline for a few hours.

As always, we will do everything we can to keep this unavailability as short as possible.

OceanDataLab recrute!

Sylvain Herlédan — Fri, 31 Jul 2020 13:55:38 GMT

Notre équipe de développeurs et de chercheurs est à la recherche d'un(e) Technicien(ne) Informatique dans le but de renforcer et de pérenniser ses activités d’exploitation de données.

Poste

Poste à pourvoir en CDI - Possibilité temps partiel

Missions

• Supervision et opération de traitements automatisés.
• Lancement de traitements ponctuels à la demande.
• Mise à jour et déploiement de portails web.
• Analyse des incidents d’infrastructure.
• Analyse des incidents d’approvisionnement en données.
• Rédaction des rapports d’incidents.
• Rédaction des rapports de fréquentation des sites web.
• Gestion des backups.
• Veille sécurité.

Votre mission principale consistera à opérer et à superviser des traitements automatisés afin d’assurer la disponibilité et la mise à jour du contenu des portails de visualisation dans lesquels OceanDataLab publie des données en continu. Certains de ces traitements ne sont pas automatisés et sont à lancer ponctuellement, à la demande.

Ces traitements sont réalisés sur diverses infrastructures, physiques (serveur ou nœud de supercalculateur) ou virtuelles (clouds), qui demandent une intervention humaine pour gérer l’arrêt et le redémarrage des chaînes de traitement lors de maintenances planifiées ou après un incident.

De plus vous aurez pour tâche de diagnostiquer les problèmes techniques qui empêchent le bon déroulement des traitements, qu’il s’agisse d’une coupure réseau, d’une corruption sur le media de stockage ou du plantage d’un hyperviseur, puis d’interagir avec les équipes de support qui gèrent les infrastructures présentant un défaut jusqu’à résolution du problème.

Vous collecterez les éléments nécessaires à l’évaluation des performances des traitements et des services dont vous aurez la charge. Vous communiquerez ces éléments à l’équipe responsable du développement des logiciels et participerez aux discussions visant à déterminer les options possibles pour optimiser lesdites performances.

Le rôle de supervision couvre également l’identification des causes d’indisponibilité ou de retard dans la publication des résultats, généralement un incident ou un délai chez les fournisseurs de données, pour en avertir les utilisateurs.

Vos interventions lors d’une maintenance ou d’un incident donneront lieu à la rédaction de rapports visant à analyser les causes d’indisponibilité de nos services, permettant ainsi de faire un retour documenté sur la qualité des différentes infrastructures utilisées et d’orienter le développement de nos logiciels dans le but de les rendre plus robustes face aux incidents les plus courants.

Vous pourrez par ailleurs être amené(e) à participer à une partie des tâches d'administration système que se partagent les membres de l'équipe informatique (sauvegarde, maintenance matérielle et logicielle des serveurs, déploiements).

Compétences

Les compétences suivantes sont nécessaires pour l’exercice de ce poste :
• Système d’exploitation Linux.
• Scripting Bash.
• Programmation Python.
• Systèmes de gestion de base de données MariaDB / PostgreSQL / SQLite.

Des connaissances sur plusieurs distributions Linux et en virtualisation (notamment LXC et OpenStack) sont un plus.

Profil Recherché

• Formation BAC+2 BTS ou DUT informatique requise, niveau débutant accepté.

Qualités

• Rigueur et méthode seront attendues du candidat ou de la candidate, ainsi que des capacités relationnelles et rédactionnelles en Français et, dans une moindre mesure, en Anglais.
• Savoir-être professionnels : Travail en équipe, autonomie, adaptabilité, bonne gestion du stress et force de proposition.
• Le permis B et un véhicule personnel sont indispensables (pénurie de transports en commun dans la zone).

Déroulement chronologique du Recrutement

• Ouverture des candidatures le Lundi 03 Août.
• Clôture des candidatures le Vendredi 25 Septembre.
• Prise de contact avec les candidat(e)s retenu(e)s pour un entretien du Lundi 05 au Vendredi 09 Octobre.
• Entretiens physiques au siège de l’entreprise à LOCMARIA-PLOUZANÉ entre le Lundi 10 et le Vendredi 14 Octobre.
• Le contrat débutera dès le mois de Novembre.

Si cette offre vous intéresse, merci de nous faire parvenir votre candidature (CV + lettre de motivation) exclusivement par mail : join.us(at)oceandatalab.com

Presentation of our tools at online EGU20

Lucile Gaultier — Sat, 02 May 2020 07:05:19 GMT

We will be available to chat about our visualisation tools SEAScope and OVL on the online EGU20 event on Monday morning at 10h45.

Join us to chat on Monday at https://meetingorganizer.copernicus.org/EGU2020/session/36169 or leave a comment on our presentation until the 31st of May.

Link toward our presentation on EGU20 events (you can discuss and comment on this page): https://meetingorganizer.copernicus.org/EGU2020/EGU2020-22600.html

Link toward the interactive online presentation with nice tutorials and demonstration videos:https://odl.bzh/ovl-overview

CFOSAT SWIM & SCA samples available in Syntool

Lucile Gaultier — Thu, 20 Feb 2020 15:05:53 GMT

Samples of CFOSAT SWIM and SCA data have been integrated into the AVISO portal: https://odl.bzh/5_pKZzSY
Visit the portal to take a peak at wave spectrum, SWH and wind.

CFOSAT SWIM L2 Combined spectrum and L2 Nadir SWH(CNES, CWWIC), products are available on AVISO.

CFOSAT SWIM L2s 2º, 6º, 10º Fluctuation spectrum (CNES, IWWOC, experimental products), L2 Nadir SWH (CNES, CWWIC).

ESA Advanced Ocean Synergy Training Course @ Chania, Greece

ODL — Tue, 05 Nov 2019 12:57:44 GMT

This year again, the ODL team has been involved in the organization of the ESA Ocean Training Course which has started yesterday in Chania, Greece.

During the week, our experts will lead or participate in several interactive lectures that will provides students a hands-on training for some processing techniques to estimate geophysical parameters, as well as demonstrate synergies that exist among various ocean remote sensing datasets:

Explore synergies using various remote sensing data
Using satellite data to investigate ocean surface currents and transport
How to monitor ocean waves from space
Wave-Current interaction: Internal waves from space
Wave-Current interaction: How does ocean circulation impact waves?
Sea ice extent, deformation and drift in the Arctic Ocean

These interactive lectures (and others too!) will be based on ODL tools Ocean Virtual Lab and SEAScope

Sept 16-20, OceanObs'19, SEAScope and Syntool Open Source tools live demo

dr.fab — Tue, 10 Sep 2019 16:44:44 GMT

SEAScope SA and Syntool web will be demonstrated on OceanDataLab booth at OceanObs'19 conference from Sept 16 to 20. Please stop by and ask for a live demo !

More information on OceanObs'19

ORSS Summer school #5 in Moulin-Mer

Lucile Gaultier — Wed, 03 Jul 2019 09:33:55 GMT

ODL will participate to the 5th Ocean Remote Sensing Synergy summer school on July 3rd, for theoretical and practical courses on ocean waves and currents, using Ocean Virtual Laboratory tools (online and standalone).

The lecture will be divided in two parts:

During the first part, we will learn to use SEAScope, explore different types of remote sensing data and their synergies.

here

During the second part, we will interact with SEAScope using python jupyter notebooks:

The first notebook will show the interaction between wave and current, we will derive the swell refraction using GlobCurrent current and compare it with Sentinel-1 and Sentinel-2 observation of waves.
The second notebook will compute a virtual drifter trajectory using GlobCurrent current, we will compare our results with data from in-situ drifters.
In the third one we will see how to explore waves using Sentinel-2 High Resolution optical sensor.

here

More examples of notebooks about the derivation of currents using altimetry or wind are available. You can find instructions here .

Scheduled maintenance

Sylvain Herlédan — Wed, 05 Jun 2019 21:43:47 GMT

Our data server will be temporarily unavailable on 12 and 13 June due to maintenance operations.

We are reaching the limits of our current storage capacity and must extend it to offer more content in the Syntool portals.

While this should have no impact on the availability of the websites, Syntool will not be able to access any data during this operation (the expected downtime is 30 minutes).

We will do everything we can to keep this data unavailability as short as possible.

SEAScope for Linux, macOS and Windows

Sylvain Herlédan — Mon, 08 Apr 2019 21:32:43 GMT

A new release is on its way and this time Windows and macOS users will be able to use SEAScope on their favorite operating system too!

It has been a very long time since the previous release and the software is almost ready to be published so we thought we could let users take a peek at what this new version of SEAScope can accomplish… So here it is! A release candidate version of SEAScope that runs on Linux/Windows/macOS, has even lower hardware requirements than before and more Python bindings!

The release candidate contains all the features that we plan to include in the actual release but might still have some minor bugs and lack documentation. We plan to publish the finalized version in a month or so and release the source code too! SEAScope is now a Free and Open-Source Software distributed under the LGPL licence (if you are really in a hurry, contact us with by email or leave us a message on the ODL forum and we will send you the source for this release candidate).

Adding support for new platforms also means that we have more information to provide to users, so the SEAScope website has been revamped too :)

Please visit https://seascope.oceandatalab.com to download SEAScope, some data samples and let us know what you think!

PS: seascope.oceandatalab.com might be a bit difficult at the moment for some of you because we moved the website to another server and this change takes some time to propagate between the DNS hosts (it should be ok for everybody in a few hours).

Scheduled maintenance

Sylvain Herlédan — Tue, 19 Feb 2019 17:18:15 GMT

Our servers will be temporarily unavailable on Friday, 22th February, starting at 17:00 UTC due to maintenance operations.

All our websites (including this one) and services (Syntool, SEAScope) will be offline for a few hours.

As always, we will do everything we can to keep this unavailability as short as possible.

Sentinel-3B SRAL and OLCI available in S3View

Sylvain Herlédan — Fri, 14 Dec 2018 08:24:04 GMT

A few days ago Eumetsat communicated about the release of Sentinel-3B Ku/C Radar Altimeter (SRAL) and Ocean and Land Colour Instrument (OLCI) data.

So after the SLSTR products last week, it is now time for OLCI Level 1 and SRAL Level 2 Near Real Time data to join the S3View portal (https://s3view.oceandatalab.com) for online visualization… And here they are!

Sentinel-3 twins OLCI (Daily) true color: https://odl.bzh/bZTUgp-f and Near Infra Red brightness contrast: https://odl.bzh/78GNDvjz

Sentinel-3 twins SRAL (Daily) Sigma0: https://odl.bzh/c2_CTwyx and Sea Surface Height Anomaly (SSHA): https://odl.bzh/8_woVSx1

Sentinel-3 twins SRAL (Daily) Wind speed: https://odl.bzh/kGmZMr08 and Significant Wave Height (SWH): https://odl.bzh/axV5wGzb

Sentinel-3B SLSTR available in S3View

Sylvain Herlédan — Thu, 06 Dec 2018 09:22:09 GMT

The second Sentinel-3 satellite, Sentinel-3B (S3B), launched successfully on 25 April 2018 and has been in commissioning phase for five months before being handed over to Eumetsat for routine operations.

Last month Eumetsat announced the release of S3B Sea and Land Surface Temperature Radiometer (SLSTR) data and… it is now available for online visualization in the S3View portal (https://s3view.oceandatalab.com), only a few hours after they have been acquired by the satellite!

Select SLSTR products from both Sentinel-3A and Sentinel-3B and enjoy a daily global coverage of Earth observation data by the Sentinel-3 twins!

Sentinel-3 twins SLSTR RGB false color (Daily): https://odl.bzh/D7_qGxP6

Sentinel-3 twins SLSTR SST (Daily): https://odl.bzh/xDG9EJw-

Sentinel-3 twins SLSTR InfraRed 12μm (12 Hours): https://odl.bzh/wczsfu_U

All hands on deck for Drift4Skim campaign

Lucile Gaultier — Tue, 04 Dec 2018 10:07:43 GMT

ODL participated in the Drift4Skim campaign (https://www.skim-ee9.org/The-mission/Campaigns) which took place off the Western French coast (near Brest) from 2018-11-20 to 2018-11-27.

The main aim of this operation was to demonstrate that current measurements can be done using a pulse-pair method, but the data acquired during the campaign will also be used to investigate the relation of the surface velocity to depth-varying current and waves, as well as to link the estimated current velocity to reference current measurements: drifters , ADCPs (Acoustic Doppler Current Profiler) and HF radars (High Frequency radars).

Two planes, one oceanographic ship (la Thalia) and two zodiacs (from Iroise Evasion) were involved in the campaign. ODL was in charge of deploying drifters with Zodiacs in the Western area of Ushant and… All went very well! Thus we have now hundreds of in-situ drifter trajectories collocated in time and space with data from KuROS airborne instrument.

Have a look at https://realtime.oceandatalab.com to replay deployments or enjoy real time trajectories.

SKIMulator training is happening

Lucile Gaultier — Fri, 12 Oct 2018 06:41:10 GMT

OceanDataLab is organizing a SKIMulator training at Pôle numérique as part of the Doppler week (DOFS, https://dofs.sciencesconf.org).
From an OGCM model (with waves), you will simulate L2B and L2C SKIM-like observation.

Give it a try, get your hands dirty with endless spinning!

Instructions for the training are here https://ftp.odl.bzh/odl/skim/skimulator_training.pdf

Sept 24-29 : "25 Years of Progress in Radar Altimetry" Symposium

dr.fab — Tue, 18 Sep 2018 19:45:12 GMT

We will be available on the OceanDataLab stand in the Exhibition area to provide live and interactive demo of the Ocean Virtual Laboratory including the web and standalone applications Syntool and SEAScope highlighting the altimetric measurements in the context of multisensor Synergy.

Following on from the "15 Years of Progress in Radar Altimetry" Symposium in 2006, and the "20 Years of Progress in Radar Altimetry" Symposium in 2012, both deemed a very successful landmark by the participants and the readership of the Proceedings, we have now reached the 25-year anniversary of the first supply of ERS-1 and TOPEX/Poseidon data products to the Altimetric Community.

To mark this occasion the European Space Agency, in collaboration with the French Space Agency, CNES, is organising an exceptional Symposium on "25 years of Progress in Radar Altimetry". This event will be sponsored by other partner agencies and organisations supporting the development of altimetry. Along with this symposium, related events will take place in the same week which includes the annual meeting of the Ocean Surface Topography Science Team (OSTST) and the International DORIS Service (IDS) Workshop. The Symposium encompassing these events will be held on 24 to 29 of September 2018, in Ponta Delgada, São Miguel Island, Azores Archipelago, Portugal.

More Information here on the symposium web site

ORSS Summer school #4 in Brest

Sylvain Herlédan — Mon, 10 Sep 2018 10:55:48 GMT

ODL will participate to the 4th Ocean Remote Sensing Synergy summer school on Sept. 10 to 14, for theorical and practical courses on ocean waves and currents, using Ocean Virtual Laboratory tools (online and standalone).

SEAScope notebooks for practicals on Monday September 10 − deriving upper ocean motions from remote sensing observations:

notebook 1 : Computing geostrophic current from CMEMS SSH - requires seascope_export.py and constant.py
notebook 2 : Computing Ekman current from ECMWF wind speed - requires seascope_export.py and constant.py
notebook 3 : Computing total current from previous results - requires seascope_export.py
notebook 4 : Eulerian comparison of two current velocities

SEAScope notebooks for practicals on Wednesday September 12 − remote sensing of wave dynamic and interaction with current:

Go to SEAScope installation directory
Remove the index.fb file in SEAScope installation directory
Download Jason 2 data
Move jason_2_gdr.tar.gz in SEAScope data directory and uncompress it (using tar xzf under Linux or 7-Zip on Windows)
Start SEAScope

notebook 5 : Swell detection on Sentinel-2 data (estimation of phase velocity between two bands)
notebook 6 : Wave propagation simulation in presence of surface current - requires seascope_export.py

Scheduled maintenance

Sylvain Herlédan — Fri, 07 Sep 2018 18:15:06 GMT

Our servers will be temporarily unavailable on Friday, 14th September, starting at 15:00 UTC due to maintenance operations.

All our websites (including this one) and services (Syntool, SEAScope) will be offline for a few hours.

As always, we will do everything we can to keep this unavailability as short as possible.

Scheduled maintenance

Sylvain Herlédan — Tue, 28 Aug 2018 07:07:45 GMT

Our data server will be temporarily unavailable on Wednesday evening (starting at 17:00 UTC) due to maintenance operations.

We are reaching the limits of our current storage capacity and must extend it to offer more content in the Syntool portals.

While this should have no impact on the availability of the websites, Syntool will not be able to access any data during this operation (the expected downtime is 30 minutes).

We will do everything we can to keep this data unavailability as short as possible.

August 1-3 2018 @ESRIN : EOSS 2018

dr.fab — Wed, 01 Aug 2018 10:14:38 GMT

August 1 to 3, 2018 at ESA ESRIN (Italy) : General information about the 9th ESA Earth Observation Summer School

A team from OceanDataLab including Dr.fab, Lucile Gaultier and Guillaume Le Séach, will provide hands on training on Ocean current and Ocean waves. In particular, they will demonstrate some processing techniques to estimate geophysical parameters such as ocean current and then the synergies amongst all Ocean Remote Sensing datasets (here Ocean Surface roughness and Sea Surface Temperature) and wave current interactions at play.

Ocean Virtual Lab Hands on trainings

EOSS_2018_D3p1-2-3 : https://docs.google.com/presentation/d/1ucohty6-B_LghKm9n6dq7vsK4pgL1ogX5jsLVVpANys/edit?usp=sharing

EOSS_2018_D4p1-2-3 : https://docs.google.com/presentation/d/1px4yptP4pm0iEmRa54X7_JHICRBZ6qYDN369wkxPatU/edit?usp=sharing

EOSS_2018_D5p1-2-3 : https://docs.google.com/presentation/d/1cDTSSVFH6OZkUP98sUTUDwZ3u9RT5HQ5TD5MQqYhX2U/edit?usp=sharing

notebook 1 : Nice display for Sentinel-1 data (incidence angle compensation) - requires input data
notebook 2 : Swell detection on Sentinel-2 data (estimation of phase velocity between two bands)
notebook 3 : Wave propagation simulation in presence of surface current
notebook 4 : Computing geostrophic current from CMEMS SSH - requires seascope_export.py and constant.py
notebook 5 : Computing Ekman current from ECMWF wind speed - requires seascope_export.py and constant.py
notebook 6 : Computing total current from previous results - requires seascope_export.py
notebook 7 : Lagrangian advection of a particle using current velocity - requires seascope_export.py, constant.py and tools_advection.py
notebook 8 : Eulerian comparison of two current velocities

SEAScope: viewer and Python bindings

Exploring the ocean mesoscale and sub-mesoscale using thermal and optical imagery

http://ovl.oceandatalab.com

Good Synergy between SAR roughness, tracers and currents derived from altimetry:

Example 1: Sea Surface Temperature (SST), Chlorophyll-a (Chl) from MODIS and VIIRS are well correlated with GlobCurrent current (Along track Jason-2 above mesoscale eddies)
Example 2: SAR from Sentinel-1, SST and Chl from VIIRS are in good agreement with altimetry

No front can be detected in one of the tracer:

Example 1: No temperature gradient in the SST but signature of the eddy can be seen on the Chl from MODIS
Example 2: Wind is blowing, no features are visible in the SST but Chl from MODIS is in good agreement with GlobCurrent current.

Synergy using Sentinels:

Example 1: SAR from Sentinel-1, true RGB from OLCI Sentinel-3 and altimetry from SRAL Sentinel-3 are all clearly showing a mesoscale eddy

Bad correlation between tracer and currents derived from altimetry:

Example 1: SST and Chl from MODIS and VIIRS and GlobCurrent currents are showing some discrepancies: It highlights the lack of temporal resolution in currents derived from altimetry as there is no altimeter track above the missed turn.
Example 2: In-situ LASER drifters are in good agreement with SST fronts and reveal errors in GlobCurrent currents

Understanding the polar oceans from space

http://swarp.oceandatalab.com

Marginal Ice Zone

Ice eddies: Example 1
Wave in ice: Example 1 Example 2 Example 3 Example 4 Example 5

Sentinel-1 and ASCAT

Example 1 Example 2 Example 3
ONR cruise: Example 1

SAR winds on OVL

dr.fab — Wed, 21 Feb 2018 10:38:13 GMT

Sentinel-1 SAR winds over European seas, now visible shortly after they are made available on the scihub ! Check it out in the Ocean Virtual Laboratory : https://odl.bzh/46gHNWJS

Scheduled maintenance

Sylvain Herlédan — Thu, 25 Jan 2018 07:10:09 GMT

Our data server will be temporarilly unavailable on Monday morning (starting at 6:00 UTC) due to maintenance operations.

We recently modified the processing chains that feed Syntool with new data every day to include:

additional areas (Indian Ocean, East China Sea) for Sentinel-1 SAR roughness
SMAP L3 wind
new version (v5) of MicroWave OI SST from RSS

The volume of data offered for visualization in Syntool increases steadily and our storage capacity must be expanded (again!).

Reprocessed data (GlobCurrent currents and MWOI SST) are on their way and will also need some space.

While this should have no impact on the availability of the websites, Syntool will not be able to access any data during the few hours it will take to complete this operation.

We will do everything we can to keep this data unavailability as short as possible.

S3View portal: now with NRT data!

Lucile Gaultier & Sylvain Herlédan — Fri, 08 Dec 2017 14:23:05 GMT

The S3View portal is a web application (based on Syntool) developed by OceanDataLab at the demand of ESA to visualize data from the Sentinel-3 mission.

Eight products are currently available on the S3view portal:

OLCI true RGB color product includes three bands (665nm, 560nm, 490nm) from L1 EFR NRT data.
For each band, the radiance has been corrected for atmospheric signal using a look up table provided by CNES (A. DICK, CNES, DSO/SI/MO, 2017-07-04 13:02:33.425512).

OLCI Near Infra-Red (NIR) product includes the 865nm band.
The radiance has also been corrected for atmospheric signal using the aforementioned CNES look up table.

SLSTR false RGB color product includes three bands (865nm, 659nm, 555nm) from L1 RBT NRT data.
For each band, the radiance has been corrected for atmospheric signal using a look up table provided by CNES (A. DICK, CNES, DSO/SI/MO, 2017-07-05 08:45:26.390193).

SLSTR Infra-Red (IR) product includes the 10.85µm band from L1 RBT NRT data.
A mask is applied on lands and clouds (a filter has been implemented for the latter using SST climatology and a selection of cloud mask bits).

SRAL Sea Surface Height anomaly (SSHA) at 1 Hz Ku band from L2 WATER NRT data.

SRAL corrected 'ocean' significant waveheight (SWH) at 1 Hz Ku band from L2 WATER NRT data.

SRAL Altimeter wind speed at 1 Hz Ku band from L2 WATER NRT data.

SRAL corrected 'ocean' backscatter coefficient (Sigma0) at 1 Hz Ku band from L2 WATER NRT data.

This web application used to only contain data that we processed by monthly batches (we have a continuous coverage since May 2017)…
Some of you already knew the application and asked for more frequent updates in order to have a look at the latest acquisition as soon as possible…
And here it is! Near Real Time processing is now live!

The EOCloud platform (https://eocloud.cloudferro.com/) where the S3View processing chain is running hosts the whole archive of Sentinel-3 data (among other datasets) et retrieves NRT data within a few hours after acquisition.
It also provides the EOFinder service (https://finder.eocloud.eu), an interface and a webservice to explore their data archive and find the files that correspond to a set of criteria.
We use this service to detect the availability of new NRT data on their platform and trigger the processing chain which produces the visualizations that you can see in the S3View portal (usually 4 hours after acquisition).

OLCI true RGB color with SRAL SWH https://odl.bzh/FwtnWaRL

SLSTR Infra-Red with SRAL SSHA https://odl.bzh/nrwp_BSH

The portal is available at https://s3view.oceandatalab.com. Let us know if you have questions or comments about S3View!

Network incident

Sylvain Herlédan — Thu, 30 Nov 2017 19:45:01 GMT

Update (2017-11-30 21:07:00): data server is back online!

The Syntool data server is currently unreachable due to a network incident. Syntool portals are still available but they will not be able to load any data until the problem is solved.

Our ISP has been notified, we will update this news as soon as we have more information. Sorry for the inconveniance.

Scheduled maintenance

Sylvain Herlédan — Thu, 26 Oct 2017 07:49:39 GMT

A maintenance operation is scheduled for November 1st on our data server in order to increase its storage capacity and replace deprecated data with their up-to-date versions.

While this should have no impact on the availability of the websites, Syntool will not be able to access any data during the few hours it will take to complete this operation.

We will do everything we can to keep this data unavailability as short as possible.

Oct 17-19, 2017 @ AppSpace Bretagne

dr.fab — Thu, 19 Oct 2017 08:14:27 GMT

OceanDataLab was in Rennes (Brittany region capital) on oct 17 and 18, to showcase our web and standalone applications on a stand during the 1rst Appspace forum jointly organized by GIS Bretel and MoreSpace Booster in Brest and InSpace Institute/CNES in Toulouse.

These two days were a fantastic opportunity to discuss with (potential) users of satellite observations for marine environment monitoring and to understand their needs in terms of tools for processing and displaying the large amount of EO data, especially for Copernicus Sentinels data.

It was also a good occasion for us to demonstrate the potential of SEAScope and Syntool to future users.

ODL at EO Open Science

Lucile Gaultier & Sylvain Herlédan — Tue, 10 Oct 2017 12:44:56 GMT

OceanDataLab was in Frascati, Italy two weeks ago to animate a stand during the 3rd EO Open Science consultation meeting organized by ESRIN.

This week was a fantastic opportunity to discuss innovative tools and solutions developed to store, process and display the large amount of Sentinel data.
It was also a good occasion for us to demonstrate the potential of SEAScope and Syntool to future users and to get feedbacks from our current users. We hope we were able to demonstrate to all of you how ODL tools and scientific expertise can help with Earth observation challenges.

Some interesting cases on Twitter…

We were able to show several use cases for Earth observation data, notably with Sentinel acquisitions. You can see some of them on Twitter:

… And new videos on Youtube!

We also released some videos (you can see the full playlist) to demonstrate how Syntool and SEAScope can be used to find interesting cases of synergy between various sensors and data sources:

This video shows how Syntool lets you compare between
a large variety of collocated data (drifters, profilers, altimetry, SAR and
composite satellite data) and see how they complement each
other to provide a more accurate view of a scene.

Here you can how the dynamic rendering mechanism
implemented in SEAScope allows you to highlight some
phenomena on Sentinel (1, 2 and 3) data, even when a
Python script is managing camera animations!

If you want to see more, we will upload new videos about case studies and some tutorials for Syntool and SEAScope on our Youtube channel: https://odl.bzh/youtube

Sept 11-15, 2017 @ Porto : ESA Advanced Ocean Remote Sensing Training Course

dr.fab — Wed, 06 Sep 2017 10:49:05 GMT

Sept 11 to 15, 2017 at University of Porto (Portugal) : General information about the 5th ESA Advanced Ocean Remote Sensing Training Course

A team from OceanDataLab including Dr.fab, Lucile Gaultier and our technical support Sylvain Herlédan, will provide hands on training on Ocean current and Ocean waves. In particular, they will demonstrate some processing techniques to estimate geophysical parameters such as ocean current, sea surface roughness, cross spectra, and then the synergies amongst all Ocean Remote Sensing datasets (here Ocean Surface roughness and Sea Surface Temperature)

Geophysical parameters estimation

The training was based on the following self described ipython notebooks and making use of some open source SAR processing and data reader libraries :

notebook 1 : Nice display for Sentinel-1 data (incidence angle compensation) - requires input data
notebook 2 : Swell detection on Sentinel-2 data (estimation of phase velocity between two bands)
notebook 3 : Wave propagation simulation in presence of surface current
notebook 4 : Computing geostrophic current from CMEMS SSH - requires seascope_export.py and constant.py
notebook 5 : Computing Ekman current from ECMWF wind speed - requires seascope_export.py and constant.py
notebook 6 : Computing total current from previous results - requires seascope_export.py
notebook 7 : Lagrangian advection of a particle using current velocity - requires seascope_export.py, constant.py and tools_advection.py
notebook 8 : Eulerian comparison of two current velocities

SEAScope: viewer and Python bindings

Exploring the ocean mesoscale and sub-mesoscale using thermal and optical imagery

http://ovl.oceandatalab.com

Good Synergy between SAR roughness, tracers and currents derived from altimetry:

Example 1: Sea Surface Temperature (SST), Chlorophyll-a (Chl) from MODIS and VIIRS are well correlated with GlobCurrent current (Along track Jason-2 above mesoscale eddies)
Example 2: SAR from Sentinel-1, SST and Chl from VIIRS are in good agreement with altimetry

No front can be detected in one of the tracer:

Example 1: No temperature gradient in the SST but signature of the eddy can be seen on the Chl from MODIS
Example 2: Wind is blowing, no features are visible in the SST but Chl from MODIS is in good agreement with GlobCurrent current.

Synergy using Sentinels:

Example 1: SAR from Sentinel-1, true RGB from OLCI Sentinel-3 and altimetry from SRAL Sentinel-3 are all clearly showing a mesoscale eddy

Bad correlation between tracer and currents derived from altimetry:

Example 1: SST and Chl from MODIS and VIIRS and GlobCurrent currents are showing some discrepancies: It highlights the lack of temporal resolution in currents derived from altimetry as there is no altimeter track above the missed turn.
Example 2: In-situ LASER drifters are in good agreement with SST fronts and reveal errors in GlobCurrent currents

Understanding the polar oceans from space

http://swarp.oceandatalab.com

Marginal Ice Zone

Ice eddies: Example 1
Wave in ice: Example 1 Example 2 Example 3 Example 4 Example 5

Sentinel-1 and ASCAT

Example 1 Example 2 Example 3
ONR cruise: Example 1

Infrastructure maintenance

Sylvain Herlédan — Tue, 04 Jul 2017 16:28:02 GMT

A scheduled maintenance of our servers will occur between July 6th and July 7th in order to relocate some of our services in a new datacenter (http://www.pebsco-bretagne.com/) and upgrade our fiber connection.

You may experience some issues with our websites during this operation: data not showing in the Syntool portals, unreachable project hubs (OVL, PiMEP) and other websites (SEAScope). It should only be temporary (if it happens at all), so please wait a few minutes and try again.

We are sorry for the inconvenience but this is a necessary step to improve the overall user-experience in the long term and provide you with more interesting and beautiful data to look at.

June 22, 2017 : Ocean Virtual Lab @ Paris Air Lab

dr.fab — Mon, 22 May 2017 10:07:58 GMT

OceanDataLab will showcase the Ocean Virtual Laboratory at the startup village of Paris Air Lab @ the International Paris Air Show

At the heart of the Paris Air Show, the Hall Concorde is putting the spotlight on technology innovations of the future.
Here, experts, start-ups and manufacturers welcome visitors to three complementary areas dedicated to discussion, information and experiments, all highlighting innovations of the future.

PICK UP YOUR INNOVATION – AN AREA DEDICATED TO INDUSTRIAL INNOVATION AND START-UPS

23 display areas will be focusing on the sector's manufacturers and start-ups

There will be 12 islands devoted to collaborative innovation in the aerospace sectors, laid out within circuits on three main themes:
The "Aeronautics" circuit: Aircraft of the future, Propulsion, Cleansky and Sustainable Aviation
The "Digital & new application" circuit: Drones, Connectivity, SESAR/NextGen and UAF (French airport union)
The "Space" circuit: Launchers, ESA, ONERA (national aerospace studies and research office) and Earth Observation

Within these thematic circuits, there will be 10 islands dedicated to new players, where around 70 start-ups will present their projects and meet visitors and professionals in the sector during the Show.

Satellite data analysed by OceanDataLab helps cleaner shipping

dr.fab — Tue, 25 Apr 2017 16:44:45 GMT

Recent publication on European Space Agency (ESA) Earth Observation Web site : ESA_helps_faster_cleaner_shipping

With around 90% of world trade carried by ships, making sure a vessel follows the fastest route has clear economic benefits. By merging measurements from different satellites, ESA is providing key information on ocean currents, which is not only making shipping more efficient but is also helping to reduce carbon dioxide emissions.

Shipping companies forecast ocean currents down to a depth of about 15 m to route their vessels through favourable currents and avoid those that might hinder a voyage.

Reliable forecasts are essential for making sure that goods arrive on time and that ships use as little fuel as possible. The problem is that forecasts might not always be accurate.

Combining satellite measurements such as sea-surface height and temperature, surface winds and gravity, along with measurements taken in situ, can yield a unique view of ocean-surface circulation.
See Globcurrent Ocean surface current animation

ESA’s Globcurrent project has merged measurements to build a picture of daily global ocean surface currents over the last 24 years. Shipping companies can use this information to understand general circulation characteristics of particular regions.

Building on Globcurrent, a near-realtime product would then allow them to choose the most reliable forecast for a given time and location.

Ocean scientists therefore teamed up with CGM-CMA, a worldwide shipping group, to optimise routing using Globcurrent data.

Fabrice Collard from Ocean Data Laboratory said, “The lack of confidence in ocean-circulation models has hindered ship routing.

Ship track overlaid on a sea-surface temperature map from ESA’s Medspiration project and surface current streamlines from ESA Globcurrent project. Credit OceanDataLab

“Today, Globcurrent can help assess which forecast products are the most reliable for a given local area. This, in turn, helps shipping companies choose a particular route that would make use of favourable currents.”

Patrice Bara from CGM-CMA remarked, “Reducing container vessel fuel consumption is an important challenge, especially when trying to cut down on emissions that contribute to global warming.

“Based on our experience with the Europe–Asia route, using existing ocean forecast products gives us a 0.4% cost saving. However, Globcurrent could help us achieve savings of up to 1.2% on fuel consumption.

“It is extremely important for us to assess the reliability of model forecasts against Globcurrent products in near-real time and to achieve our first target of reducing emissions of carbon dioxide by 180 000 tonnes a year.”

The western Mediterranean Sea has a variety of features that can be used to optimise ship routing. Part of the challenge is to extract high-level features of interest such as water-type boundary fronts and significant currents of interest for a particular ship voyage. This image shows sea-surface temperature overlaid with Globcurrent streamlines. The white broken line shows the planned passage of a ship that takes advantage of ocean-surface currents. (Credit OceanDataLab)

Craig Donlon, ESA ocean scientist, added, “The importance of ocean surface currents cannot be overstated for those working on the ocean.

“Helping European industry to fine-tune their ship routing operations with Globcurrent brings not only financial savings but also the potential to reduce greenhouse gas emissions.

“Now Globcurrent has been demonstrated, the operational generation of products will be transferred to the Copernicus Marine Environmental Monitoring Service in the coming months.

“ESA will continue the fundamental task of scientific research and development to maintain and evolve the new system to take full benefit of the Copernicus Sentinel-1, Sentinel-2 and Sentinel-3 satellites, and in the future Sentinel-6.”

13-16 Feb 2017 : Waves winter school @ UCT Cape Town

dr.fab — Tue, 07 Feb 2017 16:57:16 GMT

OceanDataLab will be lecturing at the waves winter school in University of Cape Town on Tuesday Feb 14

ODL tools such as the Ocean Virtual Laboratory will be used to compare satellite, in-situ observations and model results.

Contains modified Copernicus Sentinel-2 data 2016

Observing and modelling ocean waves : a short course

Cape Town (UCT)
Monday 13 - Thursday 16 February 2017
Detailed program here

Lecturers
Fabrice Ardhuin (CNRS)
Fabrice Collard (OceanDataLab)
Mickael Accensi (Ifremer)

Week 5 of Earth Observation from Space: The Optical View

Cecile Salaun — Mon, 10 Oct 2016 07:51:23 GMT

Go to week 5

Welcome to Week 5 of Earth Observation from Space: The Optical View – the final week of the course. We hope you enjoyed Week 4, which looked in depth at a range of ways in which EO is used to monitor rapid changes, natural disasters and humanitarian issues.

Week 5 - ‘Future technology and working with optical EO data’ - will look at how optical EO data can be processed, accessed and used, providing you with an overview of how to work with and apply EO data. It will also explore emerging trends and future EO data products and services.

In this week we will have fewer tests and quizzes but will focus more on ‘hands on’ activities guided by the video tutorials and we have provided links to a number of EO data apps you can work with directly.

If you haven’t started the course yet, it’s not too late; you can make a start now, working at your own pace. Remember you will still be able to access all of the course material after the course ends.

We hope you will also be able to contribute to the discussions during the course, and let us know any feedback or questions you may have. As always, our course educators will aim to answer some questions during the week, but we will also provide a summary of their responses to some of the most interesting questions and common themes at the end of each week.

The summary of educator responses from Week 4 can now be found in Step 4.20.

Don’t forget you can also post comments and thoughts outside the course using the hashtag #FLearthobservation.

Finally, as some learners will benefit from being able to document their participation on this course, we’d like to remind you that you will have the opportunity to purchase a Certificate of Achievement at the end of the course. You might find this useful for providing evidence of informal Continuing Professional Development (CPD), commitment to your career, or of your awareness of the issues in this subject.

Best wishes,

Dr. Mat Disney,

Reader in Remote Sensing

Dept. of Geography, UCL and NERC National Centre for Earth Observation (NCEO)

25-26 October 2016 - Ocean Virtual Laboratory - 2nd training course on Ocean Remote Sensing Synergy

dr.fab — Fri, 02 Sep 2016 09:20:20 GMT

Oct 25-26, 2016. Ocean Virtual Laboratory training course at UPT, Timisoara, Romania : download the flyer of the training course

.
Students wishing to participate can apply by clicking here or by filling this form and sending it to training-course.timisoara-2016nobotplease oceandatalab.com

Extended Application deadline : 30th September 2016

The number of participants is limited and subject to selection of application

Introduction

The Ocean Virtual Laboratory project is organising the 2nd Multi-Sensor Synergy Training, focused on introducing new, efficient ways of satellite data processing and exploitation. Participants will get strong background in remote sensing, learn how to obtain and work with data from the state-of-art operational space missions.

Objectives

To discover and analyse, via the OVL platform, the synergy between various Ocean remote sensing datasets in the combination with model output and in-situ data.

Content

Altimetry remote sensing
SAR remote sensing
Salinity remote sensing
Ocean Color remote sensing
Infrared remote sensing
Python
OVL Web GUI
Presentation of following plugins:

Fusion
Propagation
Pan-sharpening
Gap-Filling
Noise filtering

Lecturers

Dr. Fabrice COLLARD, Dr. Anton KOROSOV, Pr Johnny Johannessen, Pr. Alexandru ISAR, Dr. Mirek DARECKI, Marta Konik and Corina Nafornita.

Exploring synergies amongst Ocean Remote Sensing datasets, Ocean Surface roughness (SAR sentinel-1) and Sea Surface Temperature (VIIRS denoised) are represented.

Application:

The number of participants is limited and subject to selection of application.
Applications must be sent before the 30th of September.
Notification of acceptance will be sent via e-mail at the beginning of October.

Student Project presentation:

Participants are invited to write a short description of their subject of research. The selected projects will be presented during the first day of the course.

Target group

Post graduate, PhD students, post doctoral research scientists from European countries and Canada.
Research scientists and students from all other countries are also welcome to apply up to the space availability limits.

Requirements for students and course attendees

Pass introduction to Python
Read the tutorial on Python up to part 1.3

Practical info

Participants are expected to finance their own travel and accommodation expenses.
All materials will be provided, however participants need to bring their own laptops.
No participation fees will be charged for the training.
The official language of the course is English.

Organizing committee:

Craig Donlon (ESA)
Fabrice Collard (ODL)
Cécile Salaun (ODL)
Alexandru ISAR (UPT)
Corina Nafornita (UPT)

Co-sponsors :

European Space Agency (ESA)

Venue:

Université Politehnica Timișoara
Piata Victoriei nr. 2
Timișoara 300006, Romania

Phone: (+40) 256 403 000

July 14 to 17 @ Brest 2016 Quai des Sciences

dr.fab — Wed, 13 Jul 2016 13:18:41 GMT

OceanDataLab will be present on "Quai des Sciences" from July 14 to 17 during Brest 2016 Maritime Festival.

We will demonstrate Ocean Virtual Laboratory

To find us, open the map by clicking here

International Ocean Day

dr.fab — Wed, 08 Jun 2016 13:41:31 GMT

European satellites sentinels launched by ESA (European Space Agency) as part of the Copernicus satellite program, are bringing world citizens a stunning capacity for observing ocean health. 2016 Theme for today's International Ocean Day is : Healthy oceans, healthy planet.
OceanDataLab is proud to contribute to a global effort towards citizen consciousness by bringing the sentinels ocean observations to your eyes.

Below are some exemples of pollutions spotted by Sentinel 2:

Living PLanet Symposium 2016 - Nice examples

Cecile Salaun — Thu, 12 May 2016 15:04:37 GMT

On the 12th of May, the OVL tool has been presented by Dr. Fabrice Collard during the Living PLanet Symposium.
We have selected several examples where the benefit of the OVL web client is fully exploited.

Internal waves

In this Sentinel2 RGB composite, we can benefit from the high resolution sentinel 2 data to see the propagation of internal waves generated by tides near the south African coast.

Kelvin Wake

High resolution visible sensor in Sentinel 2 shows nice Kelvin and turbulent wakes behind ship.

Pipeline

Pollution due to a broken pipeline can be seen off the South Africa coast, using Sentinel 2 Ocean Color.

Gulf of Mexico

Here you have an example of different observations during CARTHE experiment where 1100 drifters were launched. Surface velocity Profilers are shown over High Resolution SST from VIIRS and Ocean Color from Sentinel 2.

Dog Head

This picture is a nice example of the synergy of remote sensing observations.
Are represented:

Aviso along track SSH from CRYOSAT 2, SARAL-ALTIKA and JASON 2 POSEIDON
Streamlines derived from Aviso Geostrophic Current
South Africa Regional SST from ODYSSEA product
Trajectories of Surface Velocity Profilers
SAR roughness

By over laying the different products we can see dynamical structures visible in the SAR image are in agreement with the one visible in the SST image. However, the lack of resolution of altimetry data does not unable to capture the dog head structure and thus the corresponding streamlines are not following well frontal structures from SAR and SST.

Sentinel 1 and Sentinel 2 synergy

Data from Sentinel1 (SAR) and Sentinel2 (Ocean Color) are shown in this example. Information provided by these two sensors can be simultaneously analysed.

Distorted ship wake in Sentinel2

In this Sentinel 2 image, one can see a boat wake sheared by the currents.

Oil Spill

Ship pollution can be tracked by the sentinel 2 sun glitter. This data can be useful to monitor oil spill.

Recently Twitted: #Sentinel2 and @CopernicusEU :

Internal waves

in the Strait of Gibraltar from sentinel2 sunglitter

Ocean Fur

Sentinel 2 reveals Ocean Fur caused by Langmuir circulation

The fine dance of lagoon

The fine dance of lagoon outflow from Mar Chica, Morocco

Ocean Color

Where did you Jet Ski today?

White water

Windsurfers unite! a white water day in Gulf of Lyon from

Videos

OVL Introduction

Marta Konik and Miroslaw Darecki, IOPAN, Poland

Ocean Virtual Laboratory demonstration in Agulhas area

Anton Korosov and Rick Danielson, NERSC, Norway

Presentations of basics of the Globcurrent data portal

Dr Fabrice Collard, OceanDataLab, France

Visualising data for real world users

Graham Quartly and Dawn Ashby, PML, UK

15-17 Nov. 2016 - INTERNATIONAL WORKSHOP ON MEASURING HIGH WIND SPEEDS OVER THE OCEAN

Cecile SALAUN — Fri, 18 Mar 2016 14:22:50 GMT

Oceandatalab will be part of a three days workshop on science and applications of remotely-sensed ocean surface winds, that is focused on high or extreme wind speeds. The workshop will be held at the Met Office headquarters in the cathedral city of Exeter.

For registration and abstract submission please visit:
www.metoffice.gov.uk/conference/ocean-winds-workshop

Deadline for Abstract Submission: 30 June 2016

Contact : smosstorm2016@metoffice.gov.uk

20-24 June 2016, Summer School on Ocean Remote Sensing Synergy

Cécile SALAUN — Fri, 04 Mar 2016 16:03:30 GMT

Ocean Data Lab will be part of the 3rd Summer School on Ocean Remote Sensing Synergy at Moulin-Mer (Logonna Daoulas, France).

You can find more information on the Summer School website : http://conferences.telecom-bretagne.eu/synergy_summer_school_2016

Aim of the summer school:

This year, the Summer School will focus on the underlying physical framework for Ocean Remote Sensing Synergies interpretation. Lectures by invited speakers will provide both a broad coverage of oceanic modeling (e.g., surface quasi geostrophy, Lagrangian methods) and applications to multi-sensor/multi-tracer ocean sensing data (e.g., data assimilation, missing data interpolation). Each lecture will include a Python practical session with application to multi-sensor ocean remote sensing data, especially satellite-derived Sea Surface Salinity (SSS), Temperature (SST) and Height (SSH).

Invited speakers:

Prof. Ibrahim Hoteit (KAUST, Saudi Arabia)
Prof. Joe Lacasce (WHOI & University of Oslo, Norway)
Dr. Aurélien Ponte (IFREMER, France)
Dr. Nicolas Reul (IFREMER, France)

Permanent speakers:

Dr. Bertrand Chapron (IFREMER, France)
Dr. Fabrice Collard (OceanDataLab, France)
Dr. Pierre Tandeo (Telecom Bretagne, France)
Dr. Jean Tournadre (IFREMER, France)

Program

The Summer School will include five main lectures:
Lecture 1 –> Introduction to spatial oceanography (data acquisition, overview, problematic)
Lecture 2 –> Visualization tools for multi-sensor spatio-temporal remote sensing data
Lecture 3 –> Focus on satellite salinity (acquisition, problematic, synergy with altimetry)
Lecture 4 –> Physical modeling (surface quasi-geostrophy, Lagrangian methods)
Lecture 5 –> Data assimilation methods (state-space models, Ensemble Kalman Filter)
Each lecture will include both a theoretical course and a practical session with applications to multi-sensor remote sensing or physical simulation datasets. A poster session will provide opportunities for the participants to introduce and discuss their research interests with the other participants and the speakers.

Tuesday June 21 at 9:00 : Practice using syntoolweb

Exploring synergies amongst Ocean Remote Sensing datasets (here Ocean Surface roughness and Sea Surface Temperature)

to select a particular product you can click on it on the map or in the timeline and you can play with its transparency with the keyword ( Shift + P and M keys)

MERIS/MODIS MSS on gulf stream

select MSS MERIS products only (unselect MSS MODIS and SST MODIS)
zoom to find an oil spill at location around Lon -79.1 / Lat 31.0
add MSS MODIS product and play with transparency to see the oil spill on MERIS and MODIS.
Press Shift+T then click on « transect »
Draw a line between two consecutive observations of the same oil spill holding the Ctrl key to measure the distance.
Find the sensing time difference between measurements in the short timeline.
Estimate the surface current velocity in the Gulf Stream
Alternatively you can click on the « extract » button, draw a bounding box while holding the Ctrl key and then click on the star over the zoom control to download all layers within the bounding box and analyse them in
external image processing software.

MODIS Terra and Aqua MSS on gulf stream

click on the map to select the first layer
play with P and M keys to switch from MODIS Terra to MODIS Aqua
identify small eddy near Lon -78.6 Lat 31.3 (it is colder so you can look at MODIS SST to help identify it
Press Shift+T then click on « Numpy »
Draw a line between two consecutive observations of the same oil spill holding the Shift key to draw an extraction box. Then click on the wheel on the right to get the link to numpy file.
estimate distance between eddy position on Terra and Aqua using ipython notebook corr.ipynb
estimate eddy transport velocity using sensing time difference from the timeline

SAR roughness and MODIS SST

locate front visible both in SAR roughness and STT gradients by playing with transparency
estimate distance between front on SAR and SST
Estimate surface current velocity using the sensing time difference from the timeline.
Other exemples with Sentinel1 SAR roughness and VIIRS SST

9 February 2016, Morespace, Article La Tribune

Cécile Salaun — Fri, 19 Feb 2016 08:37:31 GMT

Morespace is one of the four " boosters " selected by Cospace and CNES as part of a national call for projects.
The objective is to develop products and services using data from space and satellites techniques in the maritime sector.

Morespace was initiated by the "Pôle Mer Bretagne Atlantique", in partnership with other competitive clusters, and with the support of local companies or industries involved in the fields of digital and satellite data, and also in the maritime sector.

OceanDataLab is a part of the Consortium Morespace.
OceanDataLab aims to share its expertise in the processing and analysis of ocean data (currents, winds , waves ) within collaborative projects. A first version of Seascope, a platform for analysis and synthesis of ocean data will be deployed in 2016 as part of the Morespace project.

Access to the article (in french) clicking here.

More information about Morespace

9-13 May 2016 - Living Planet Symposium 2016

Cécile SALAUN — Mon, 01 Feb 2016 16:40:24 GMT

May 9 to 13 May at Prague: General information about the Living Planet Symposium

Ocean Data Lab will have a booth at the Living Planet Symposium. Please, visit us at the booth No. 6.
We will show the OVL toolcapabilities.

The demonstration will be made by the scientific members of the project team.
You can already see the videos that have been prepared by Anton (NERSC) and Marta (IOPAN).

Objectives

The objectives of the ESA Living Planet Symposium are to:

Present the progress and plans for the implementation of ESA Earth Observation strategy and the relevance of ESA's EO Programme to societal challenges, science and economy.
Provide an international forum to scientists, researchers and users to present and share state of the art results based on ESA's Earth Observation and third-party mission data.
Review the development of Earth Observation applications.
Present the Copernicus space component and operational services.
Report on ESA’s Exploitation Programmes (i.e. Climate Change Initiative, SEOM, DUE, VAE, STSE).
Introduce the current and future planned Earth Observation missions.
Outline ESA’s international cooperation in the field of Earth Observation.
Provide dedicated thematic tutorials and demonstrations.

Ipython Notebooks - Training Course on Multi Sensor Synergy - Sopot, Poland - Nov. 17, 2015

Cecile Salaun — Fri, 20 Nov 2015 17:59:28 GMT

Nov. 17, 2015 at IOPAN, Sopot, POLAND : General information

The 1st training course on Mutil-sensor Synergy took place in Sopot (Poland) on the 17th of November 2015.
The training was based on the following self described ipython notebooks :

notebook 1 : Propagation
notebook 2 : Fusion
notebook 3 : FTLE
notebook 4 : Corr

1st Training Course on Multi Sensor Synergy - Sopot - POLAND - Nov. 17, 2015

Cecile SALAUN — Tue, 17 Nov 2015 11:40:05 GMT

Download the Training Course Flyer

Introduction

The Ocean Virtual Laboratory project is organising a Multi-Sensor Synergy Training, focused on introducing new, efficient ways of satellite data processing and exploitation. Participants will get strong background in remote sensing, learn how to obtain and work with data from the state-of-art operational space missions.

Objectives

To discover and analyse, via the OVL platform, the synergy between various Ocean remote sensing datasets in the context of model output (both oceanic and atmospheric) and in-situ data.

Lecturers

Dr. Fabrice COLLARD, Dr. Anton KOROSOV, Dr. Graham QUARTLY and Pr. Mirek DARECKI

Definive Program:

morning

8:45 - 9:00 : Registration
9:00 - 10:30 :
General introduction
Introduction about Ocean Color (30')
Introduction to the different ocean remote sensing instruments (30')
introduction to altimetry(30')
30 min break
11:00-12:30 : practical demonstration of the OVL data discovery and visualisation tool (1h30)

afternoon

14:30 - 16:00 : Introduction to Python and IPython Notebook (1h30)
30 min break
16:30 -18:00 : practical training on the analysis of the synergy between microwave,
optical and IR satellite observations (1h30)

Application:

The number of participants is limited to a maximum of 30 students and subject to selection of application.
Students wishing to participate can apply by clicking here or by filling this form and sending it to training-course.sopot-2015nobotplease oceandatalab.com

Applications must be sent as soon as possible.
Notification of acceptance will be sent via e-mail.

Target group

Practical info

Organizing committee:

Craig Donlon (ESA)
Fabrice Collard (ODL)
Cécile Salaun (ODL)
Mirosław Darecki (IOPAN)
Marta Konik (IOPAN)

Co-sponsors :

European Space Agency (ESA)
Institute of Oceanology Polish Academy of Sciences (IOPAN)

Venue:

Powstańców Warszawy 55,
81-712 Sopot, Poland, P.O. Box 148

Phone: (+48 58) 551 72 81, (+48 58) 73 11 600
Fax: (+48 58) 551 21 30
E-mail: office@iopan.gda.pl

17 November 2015 - Ocean Virtual Laboratory training course

Dr.fab — Tue, 17 Nov 2015 10:45:31 GMT

Nov 17, 2015. Ocean Virtual Laboratory training course at IOPAN, Sopot, Poland : General information about the training course

Exploring synergies amongst Ocean Remote Sensing datasets (here Ocean Surface roughness and Sea Surface Temperature)

how to :

To select a particular product you can click on it on the map or in the timeline and you can play on its transparency with the keyword ( Shift + P and M keys)

SAR roughness and altimeter surface current

Identify surface current direction from biogenic film elongation and check consistency with altimeter surface current direction.
Cross check surface current direction from SAR with the direction of SST gradients.

MERIS/MODIS MSS on gulf stream

Select MSS MERIS product only (unselect MSS MODIS and SST MODIS)
Zoom to find an oil spill at location around Lon -79.1 / Lat 31.0
Add MSS MODIS product and play with transparency to see the oil spill on MERIS and MODIS.
Press Shift+T then click on « transect »
Draw a line between two consecutive observations of the same oil spill holding the Ctrl key to measure the distance.
Find the sensing time difference between measurements in the short timeline.
Estimate the surface current velocity in the Gulf Stream
Alternatively you can click on the « extract » button, draw a bounding box while holding the Ctrl key and then click on the star over the zoom control to download all layers within the bounding box and analyse them in external image processing software.

SAR roughness and MODIS SST

Locate front visible both in SAR roughness and SST gradients by playing with transparency
Estimate distance between front on SAR and SST
Estimate surface current using the sensing time difference from the timeline

MODIS Terra and Aqua MSS on gulf stream

Click on the map to select the first layer
Play with P and M keys to switch from MODIS Terra to MODIS Aqua
Identify small eddy near Lon -78.6 Lat 31.3 (it is colder so you can look MODIS SST to help identify it
Press Shift+T then click on « Numpy »
Draw a line between two consecutive observations of the same oil spill holding the Shift key to draw a extraction box. Then click on the wheel on the right to get the link to numpy file.
Estimate distance between eddy position on Terra and Aqua using ipython notebook corr.ipynb
Estimate eddy transport velocity using sensing time difference from the timeline

Ocean Remote Sensing Synergy Summer School July 2015

Cecile Salaun — Tue, 06 Oct 2015 17:08:43 GMT

The Summer School of Ocean Remote Sensing Synergy took place at Telecom Bretagne from July 5 to 10 .
The 25 participants who attended the course during the 5 days were from all over the world: Asia (Saudi Arabia, China), Africa (Morocco, Tunisia), Europe (France, Spain, Italy, Finland, Ireland, Belgium), America (Argentina, Uruguay, Brazil).
The topics were presented by 10 lecturers on topics such as oceanography, satellites Remote sensing or statistics
Students, oceanographers mostly aimed to learn more about synergetic use of satellite ocean observations. Another part of them came for training about statistical data analysis.
This summer school was the opportunity for Dr Fabrice Collard to make a demonstration of the first version of Ocean Virtual Laboratory.

4th ESA Advanced Ocean Remote Sensing Training Course in IFREMER, Brest, sept 7-11 2015

dr.fab — Thu, 10 Sep 2015 14:42:29 GMT

Sept 7 to 11, 2015 at IFREMER : General information about the 4th ESA Advanced Ocean Remote Sensing Training Course

Dr.fab from OceanDataLab, together with Romain Husson from CLS gave the hands on training on SAR marine applications.
In particular, they demonstrated some processing techniques to estimate geophysical parameters such as sea surface roughness, cross spectra or azimuth cutoff, and then the synergies amongst SAR and other Ocean Remote Sensing datasets (here Ocean Surface roughness and Sea Surface Temperature)

Geophysical parameters estimation

The training was based on the following self described ipython notebooks and making use of some open source SAR processing and data reader libraries :

notebook 1 : nice display (incidence angle compensation)
notebook 2 : SAR cross spectra estimation
notebook 3 : SAR azimuth cutoff
notebook 4 : SAR wind speed estimation
OceanDataLab SAR processing library (for notebooks 1-2-3)
IFREMER / CERSAT Cerbere geospatial processing library (for notebooks 1-2-3)
Nansat / OpenWind (for notebook 4)

Synergy demonstration

how to :

To select a particular product you can click on it on the map or in the timeline and you can play with its transparency with the keyword ( Shift + P and M keys)

SAR roughness and altimeter surface current

Identify surface current direction from biogenic film elongation and check consistency with altimeter surface current direction.
Cross check surface current direction from SAR with the direction of SST gradients.

SAR roughness and MODIS SST

Locate front visible both in SAR roughness and SST gradients by playing with transparency
Estimate distance between front on SAR and SST
Estimate surface current using the sensing time difference from the timeline.
Another exemple with Sentinel1 SAR and VIIRS SST

SAR roughness and VIIRS Ocean Color

Identify signature of high chl-a concentration on surface roughness

SAR cross spectra and model wave partitions

Identify peaks in the SAR cross spectra and dominant model wave vectors

SAR 10m wind and ECMWF model wind

Look at the variability of SAR wind compared to the mean model wind speed.

SAR wave modulation in the Marginal Ice Zone

Look at the swell modulation of radar backscatter signature at the crossing from open ocean to sea ice in the Marginal Ice Zone.

The training was organized by ESA, and was held on Ifremer's site. More than fifty people attended presentations and demonstrations.
Half of the participants came from countries of the European Union. The others were from every continent. The audience was made up of doctors and PhD students.
Fifteen lecturers intervened, coming from companies like Brockmann Consult GmbH, CLS, Ocean Data Lab, or even organizations like Ifremer, Plymouth NOC, the NERSC, or ESA.
The demonstration by Fabrice Collard and Romain Husson was interesting : students gave a good feedback.
Thank you to the LOS team of Ifremer for the organization of this event.

2nd Ocean Remote Sensing Synergy Summer School in Brest (July 6 to July 10, 2015)

dr.fab — Tue, 19 May 2015 11:28:36 GMT

July 6 to July 10, 2015 at Telecom Bretagne : General information about the Summer School

Exploring synergies amongst Ocean Remote Sensing datasets (here Ocean Surface roughness and Sea Surface Temperature)

how to :

to select a particular product you can click on it on the map or in the timeline and you can play on its transparency with the keyword ( Shift + P and M keys)

MERIS/MODIS MSS on gulf stream

select MSS MERIS products only (unselect MSS MODIS and SST MODIS)
zoom to find an oil spill at location around Lon -79.1 / Lat 31.0
add MSS MODIS products and play with transparency to see the oil spill on MERIS and MODIS.
Press Shift+T then click on « transect »
Draw a line between two consecutive obervations of the same oil spill holding the Ctrl key to measure the distance.
Find the sensing time difference between measurements in the short timeline.
Estimate the surface current velocity in the Gulf Stream
Alternatively you can click on the « extract » button, draw a bounding box while holding the Ctrl key and then click on the star over the zoom control to download all layers within the bounding box and analyse them in
external image processing software.

MODIS Terra and Aqua MSS on gulf stream

click on the map to select the first layer
play with P and M keys to switch from MODIS Terra to MODIS Aqua
identify small eddy near Lon -78.6 Lat 31.3 (it is colder so you can look MODIS SST to help identify it
Press Shift+T then click on « Numpy »
Draw a line between two consecutive obervations of the same oil spill holding the Shift key to drow a extraction box. Then click on the wheel on the right to get the link to numpy file.
estimate distance between eddy position on Terra and Aqua using ipython notebook corr.ipynb
estimate eddy transport velocity using sensing time difference from the timeline

SAR roughness and MODIS SST

locate front visible both in SAR roughness and STT gradients by playing with transparency
estimate distance between front on SAR and SST
Estimate surface current using the sensing time difference from the timeline.

Ocean Remote Sensing Synergy Summer School in Brest (June 30 to July 4, 2014)

dr.fab — Thu, 03 Jul 2014 10:49:40 GMT

General information about the Summer School

Friday July 4 at 10:30 : Pratical using syntoolweb

how to :

to select a particular product you can click on it on the map or in the timeline and you can play on its transparency with the keyword ( P and M keys)

MERIS/MODIS MSS on gulf stream

select MSS MERIS products only (unselect MSS MODIS and SST MODIS)
zoom to find an oil spill at location around Lon -79.1 / Lat 31.0
add MSS MODIS products and play with transparency to see the oil spill on MERIS and MODIS.
Press Shift+T then click on « transect »
Draw a line between two consecutive obervations of the same oil spill holding the Ctrl key to measure the distance.
Find the sensing time difference between measurements in the short timeline.
Estimate the surface current velocity in the Gulf Stream
Alternatively you can click on the « extract » button, draw a bounding box while holding the Ctrl key and then click on the star over the zoom control to download all layers within the bounding box and analyse them in external image processing software.

MODIS Terra and Aqua MSS on gulf stream

click on the map to select the first layer
play with P and M keys to switch from MODIS Terra to MODIS Aqua
identify small eddy near Lon -78.6 Lat 31.3 (it is colder so you can look MODIS SST to help identify it)
estimate distance between eddy position on Terra and Aqua using transect tool
estimate eddy transport velocity using sensing time difference from the timeline

SAR roughness and MODIS SST

locate front visible both in SAR roughness and STT gradients by playing with transparency
estimate distance between front on SAR and SST
Estimate surface current using the sensing time difference from the timeline.

SAR roughness+ Doppler

detect a large eddy (boundary visible on SAR roughness and velocity visible on SAR Doppler shift). Center near Lon 24 Lat -42
find the path of the Agulhas current and return current

explore SAR/SST synergy in syntool web

dr.fab — Mon, 25 Nov 2013 08:18:19 GMT

Sea surface roughness from ENVISAT SAR reveals complex ocean surface current gradients at the location of Sea Surface Temperature (SST) fronts off the Agulhas current on 2007/11/18 : view it in syntool web

explore MSS/SST synergy in syntool web

dr.fab — Mon, 25 Nov 2013 08:17:21 GMT

Sun Glitter derived Mean Square Slope (MSS) similarly reveals ocean surface current gradients at the location of SST fronts in the Gulf Stream on 2010/04/01 : view it in syntool web