This
data set is produced as part of the NOAA/NASA Pathfinder
AVHRR Land program. It contains global monthly composites of the
Normalized Difference Vegetation Index (NDVI) at 1 degree
resolution covering the period from July 1981 to September 2000.
This
monthly climate data set was recently updated since the original
data (the 10-day composite) used for generating this monthly
dataset, was recently reprocessed. The Pathfinder Program produces
long-term data sets derived from the observations made by Advanced
Very High Resolution Radiometers (AVHRR) on the "afternoon" NOAA
operational meteorological satellites (NOAA-7, -9, 11) and
processed in a consistent manner for global change research.