The annual pattern of vegetation emergence/bud burst, growth, and
senescence (phenology) is important for a wide variety of natural resource activities,
including livestock grazing, seed collection, fuels assessments, and
wildlife management. WWETAC has developed PhenoMap, a suite of weekly phenology layers derived from
eMODIS NDVI data.
The NDVI (Normalized Differential Vegetation Index) essentially
measures land surface "greeness" and is directly related the overall phenological
condition within a remotely sensed pixel. Pixel size is approximately 250m x 250m (15 acres). For more information on PhenoMap
We are currently conducting validation studies of PhenoMap, including an analysis of vegetation
data collected weekly at 17 plots on the Nebraska National Forest and PhenoCam data
at over 50 sites across the coterminous US.