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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).
Principal Investigator: Simon Hook, Jet Propulsion Laboratory
The ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) will measure the temperature of plants and use that information to better understand how much water plants need and how they respond to stress. ECOSTRESS will address three overarching science questions:
The ECOSTRESS mission will answer these questions by accurately measuring the temperature of plants. Plants regulate their temperature by releasing water through tiny pores on their leaves called stomata. If they have sufficient water they can maintain their temperature but if there is insufficient water their temperatures rise and this temperature rise can be measured with a sensor in space. ECOSTRESS will use a multispectral thermal infrared radiometer to measure the surface temperature that will be delivered to Houston for deployment on the International Space Station in 2017. The radiometer will acquire the most detailed temperature images of the surface ever acquired from space and will be able to measure the temperature of an individual farmers field.
One of the core products that will be produced by ECOSTRESS team is the Evaporative Stress Index (ESI). ESI is a leading drought indicator - it can indicate that plants are stressed and that a drought is likely to occur providing the option for decision makers to take action.
|Name||Dataset||Product||Pixel Size||Temporal Granularity||Decommissioned|
|AG5KMMOH V041||ASTER GED||Emissivity, Vegetation Indices||5600||Monthly||False|
|AG1km V003||ASTER GED||Temperature, Vegetation Indices, Elevation, Emissivity||1000||Static||False|
|AG100 V003||ASTER GED||Temperature, Vegetation Indices, Elevation, Emissivity||100||Static||False|
As of May 14, 2015, the Summer/Winter ASTER GED tiles of the following products: AGNS100, AGNS100B, AGNS1km, AGNS1kmB, AGNW100, AGNW100B, AGNW1km, AGNW1kmB are available in the Global ASTER GED products: AG100, AG100B, AG1km, AG1kmB. As a result, the duplicate Summer/Winter data products will be removed from the LP DAAC archive. Please contact the LP DAAC User Services with any questions.