Greenness of the Conterminous U.S.
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Products & Services
All of the AVHRR time-series products are maximum-value NDVI ("greenness") composites, which are based on a time series of daily calibrated and georegistered AVHRR observations. Maximum values for each location have been combined to obtain a nearly cloud-free coverage.
The following products are available for the conterminous United States:
There is also a twice-monthly composite available for Alaska.
NDVI composites are available from January 1989 to present. Current composites are available via FTP only. Recent composites (<1 year) are generally available as 8 mm tape, and older composites (>1 year) are available on CD.
The data product includes all acquired AVHRR bands, NDVI, satellite zenith, solar zenith, relative azimuth, atmospherically corrected with water vapor and ozone channels 1 & 2, qc band, and acquisition date. Projection is Lambert Azimuthal Equal Area for the U.S., and Albers Equal-Area Conic for Alaska. Resolution is 1km, and the data is in a binary 8-bit raster format.
Contact Customer Services for further information and pricing.
U.S. Department of the Interior | U.S. Geological Survey
URL: http://ivm.cr.usgs.gov/
Page Contact Information: custserv@usgs.gov
Page Last Modified: June 2007
