RSD marit's home projects

MODIS sea surface temperature

flyby of a MODIS sea surface temperature image

December 2000

This images was created from two granules of the MODIS sst product MOD28L2. I got the MOD28L2 hdf from this site ftp://acdisx.gsfc.nasa.gov/data/modis/samples/oceans/L2/ (or one like it) and ordered matching geolocation data from the DAAC. I reprojected the sst data using IDL software I wrote to a CED projection centered on the middle of the scene. The irregularly shaped blue spotches in the data are where clouds have been masked out.



The flyin to the sst starts with a global MODIS image created by Mark Gray. The global image was assembled from one day's worth of MODIS data, the gaps at the equator are areas that were not overflown during that day. We zoom in to a view of the East Coast of the US and fade to the SST image. The camera then follows the gulf stream up the coast, veering east where it breaks away from land and passing over several warm-core eddies. This part of the flyby duplicates one made by the SVS (We needed a HD resolution flyby. The SVS version, which was done quickly for a press release, used un-reprojected Modis swaths so the temperature data did not line up with the background land. This didn't matter so much for NTSC resolution data but was obvious at HD resolution.)

Here are some Quicktimes of the flyover.

Small Quicktime movie, sorensen compression, 320x160, 13 MB
Small Quicktime movie, jpeg compression, 320x160, 23 MB
Medium Quicktime movie, sorensen compression, 640x320, 44 MB


A 97 MB mpeg2 version of the visualization that can be played on the Electrasonic HDTV HD players can be found at ftp://gloria2-f.gsfc.nasa.gov/mpeg2/val/modis_sst.mpg