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The Community products collection includes land data products derived from one or more of the National Aeronautics and Space Administration (NASA) Earth Observing System (EOS) missions. These community products are generated by selected science investigators, and are not considered to be part of the original science mission's standard data products. The links below will direct you to specific information and access points for each of the NASA Community data products distributed from LP DAAC.
Principal Investigator: Glynn Hulley, Jet Propulsion Laboratory
Since the ASTER-GEDv3 emissivities are static (mean from 2000-2008), an emissivity adjustment was necessary to account for land surface changes over heterogeneous land cover types that are subject to annual and inter-annual variability; for example due to snow and ice melt, agricultural practices, and droughts. The emissivity over desert regions will remain invariant over time in the absence of soil moisture. To account for these changes, a monthly mean ASTER GEDv4.1 emissivity product at 0.05 degree resolution has been produced from 2000-2015 by using snow cover data from the standard monthly MODIS/Terra snow cover monthly global 0.05 deg product (MOD10CM), and vegetation information from the MODIS monthly gridded NDVI product (MOD13C2).