LP DAAC announces the release of the North American Advanced Spaceborne Thermal Emission and Reflection radiometer (ASTER) Land Surface Emissivity Database (NAALSED). The database, developed by NASA’s Jet Propulsion Laboratory (JPL), consists of mean seasonal, gridded, land surface temperature and emissivity derived from all ASTER scenes acquired between 2000 and 2010 for the “leaf-on” (July-September) time periods. The 100-meter(m) gridded product is distributed in 1 degree by 1 degree tiles over the North American continent. Each tile contains seven science data sets, including the mean and standard deviation of surface temperature, emissivity, and top of atmosphere normalized difference vegetation index, along with ancillary information such as geolocation, a land/water mask, number of ASTER observations used, and the ASTER Global Digital Elevation Model resampled to 100-m.
Product tiles may be downloaded electronically by visiting the LP DAAC “Get Data” Web site for information on accessing the following data clients.
NASA Reverb (http://reverb.echo.nasa.gov/reverb/)
LP DAAC Data Pool (ftp://e4ftl01.cr.usgs.gov/ASTT/)
USGS EarthExplorer: (http://earthexplorer.usgs.gov)
For further information, contact LP DAAC User Services.