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West Africa Drylands Project | Vegetation | Annual maximum NDVI 2004

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In drylands the annual maximum NDVI is reported to be a better estimate than average NDVI, also having less of a risk of cloud contamination. The maximum annual NDVI over the Sahel was taken from NOAA-AVHRR, and calculated from reflectance in the near infrared (NIR) and visible (VIS) regions:
NDVI = (NIR-VIS)/(NIR+VIS)
THe data used here is in 8 km resolution and was pre-processed by the GIMMS (Global Inventory Monitoring and Modeling System) group at NASA's Goddard Space Flight Center.
To see maximum NDVI for individual years click on the time-table below the map.


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West Africa Drylands Project | Vegetation | Annual maximum NDVI 2004

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Last modified Sun Mar 12 14:14:16 2006
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