how to :

1. 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.
2. 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
3. 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.