The MCD15A3H version 6 MODIS Level 4, Combined Fraction of Photosynthetically Active Radiation (FPAR), and Leaf Area Index (LAI) product is a 4-day composite data set with 500 meter pixel size.  The algorithm chooses the “best” pixel available from all the acquisitions of both MODIS sensors located on NASA’s Terra and Aqua satellites from within the 4-day period.

LAI is defined as the one-sided green leaf area per unit ground area in broadleaf canopies and as one-half the total needle surface area per unit ground area in coniferous canopies.  FPAR is defined as the fraction of incident photosynthetically active radiation (400-700nm) absorbed by the green elements of a vegetation canopy.

Improvements/Changes from Previous Versions

• The version 6 product uses the daily L2G-lite surface reflectance as input as opposed to MODAGAGG used in C5
• Products are generated at native resolution of 500 meters rather than the 1000 meters of the version 5.
• Version 6 uses an improved multi-year land cover product.

Citation

PI Name: Ranga Myneni

DOI: 10.5067/MODIS/MCD15A3H.006

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