The level-4 MODIS global Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR) product is composited every 8 days at 1-kilometer resolution on a Sinusoidal grid. The MCD15A2 product includes the following Science Data Sets: LAI, FPAR, and a set of quality rating, and standard deviation layers for each variable.
The LAI variable defines the number of equivalent layers of ... leaves relative to a unit of ground area, whereas FPAR measures the proportion of available radiation in the photosynthetically active wavelengths that are absorbed by green vegetation. Both variables are used as satellite-derived parameters to calculate surface photosynthesis, evapotranspiration, and net primary production, which inputs are used to calculate terrestrial energy, carbon, water cycle processes, and vegetation biogeochemistry.
V005 Data Set Characteristics:
Area: ~10 degrees x 10 degrees lat/long
Image Dimensions: 1200 x 1200 rows/columns
File Size: 2 MB
Resolution: ~1000 meters
Data Format: HDF-EOS
Science Data Sets (SDS HDF Layers): 6