Long Description for Thematic map, compare any week of any year
Week 31, 2003, compared with week 31, 1988 (AVHRR NDVI)

Example of a thematic map, comparing any week of any year, using Julian week 31 of 2003 and week 31 of 1988 with the AVHRR (Advanced Very High Resolution Radiometer) NDVI (Normalized Difference Vegetation Index) imagery.  The resulting image is shown, as well as the two input images used.