MODIS/Terra+Aqua Leaf Area Index/FPAR 8-Day L4 Global 1km SIN Grid V005Entry ID: MCD15A2
Abstract: 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.
Change Points of Interest
Algorithm refinements were targeted to improve quality of LAI/FPAR retrievals, and consistency with field measurements over all biomes, but with major focus on woody vegetation.
Old 6-biome LAI/FPAR map was replaced with a new 8-biome map (broadleaf and needleleaf forest classes were split into deciduous and evergreen subclasses)
LAI/FPAR algorithm LUTs refined for all 8 biomes
Reduced file volume through internal compression
Additional V005 LAI/FPAR changes: http://landweb.nascom.nasa.gov/QA_WWW/forPage/C005_Changes_LAI_FPAR...
V005 Data Set Characteristics:
Temporal Coverage: March 5, 2000 –
Area: ~10 degrees x 10 degrees lat/long
Image Dimensions: 1200 x 1200 rows/columns
Spatial Resolution: 1 km
File Size: 2 MB
Resolution: ~1000 meters
Data Format: HDF-EOS
Science Data Sets (SDS HDF Layers): 6
Purpose: Science Research
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Data Set Citation
Start Date: 1999-12-18
ISO Topic Category
Data Set Progress
Extended Metadata Properties
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