MCD15A3H - MODIS/Terra+Aqua Leaf Area Index/FPAR 4-Day L4 Global 500m SIN Grid
The level-4 MODIS global Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR) product is composited every 4 days at 1-kilometer resolution on a Sinusoidal grid. Science Data Sets provided in the MCD15A3H include LAI, FPAR, a quality assurance rating, and standard deviation 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 a canopy. Both variables are used as satellite-derived parameters for calculating surface photosynthesis, evapotranspiration, and net primary production, which in turn are used to calculate terrestrial energy, carbon, water cycle processes, and biogeochemistry of vegetation.
Collection-5 MODIS Combined Terra and Aqua LAI products are Validated Stage 2, accuracy has been assessed over a widely distributed set of locations and time periods via several ground-truth and validation efforts. Collection-5 MODIS/Terra FPAR products are Validated Stage 1, meaning that accuracy has been estimated using a small number of independent measurements obtained from selected locations and time periods and ground-truth/field program efforts. Although there may be later improved versions, these data are ready for use in scientific publications.
| Shortname: | MCD15A3H |
| Platform: | Combined Aqua Terra |
| Instrument: | MODIS |
| Processing Level: | Level-4 |
| Spatial Resolution: | 500 m |
| Temporal Resolution: | 4 day |
| ArchiveSets: | 6, 61, 1222, 1237 |
| Collection: | MODIS Collection 6 (ArchiveSet 6) |
| PGE Number: | PGE94 |
| File Naming Convention: | MCD15A3H.AYYYYDDD.hHHvVV.CCC.YYYYDDDHHMMSS.hdf
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| Citation: | Ranga Myneni, Knyazikhin, Yuri, Taejin Park - Boston University and MODAPS SIPS - NASA. (2015). MOD15A3H MODIS/Combined Terra+Aqua Leaf Area Index/FPAR Daily L4 Global 500m SIN Grid. NASA LP DAAC. http://doi.org/10.5067/MODIS/MOD15A3H.006 |
| Keywords: | Climate Change, Biomass, Evapotranspiration, Plant Phenology, Forest Composition/Vegetation Structure, Length of Growing Season, Leaf Characteristics, Canopy Characteristics, Photosynthetically Active Radiation |