Oak Ridge National Laboratory Distributed Active Archive Center

nasa-ornldaac-973

ISLSCP II GIMMS Monthly NDVI, 1981-2002

ABSTRACT: The Global Inventory Modelling and Mapping Studies (GIMMS) Normalized Difference Vegetation Index (NDVI) data sets were generated to provide a 22-year satellite record of monthly changes in terrestrial vegetation. This data set contains three data files provided at spatial resolutions of 0.25, 0.5 and 1.0 degree in latitude and longitude with data from July 1981 through December 2002. New features include reduced NDVI variations arising from calibration, view geometry, volcanic aerosols, and other effects not related to actual vegetation change. In particular, NOAA-9 descending node data from September 1994 to January 1995, volcanic stratospheric aerosol correction for 1982-1984 and 1991-1994, and improved NDVI using empirical mode decomposition/reconstruction (EMD) to minimize effects of orbital drift. Global NDVI was generated to provide inputs for computing the time series of biophysical parameters contained in the International Satellite Land Surface Climatology Project (ISLSCP) Initiative II collection. NDVI is used in climate models and biogeochemical models to calculate photosynthesis, the exchange of CO2 between the atmosphere and the land surface, land-surface evapotranspiration and the absorption and release of energy by the land surface.

daac.ornl.gov

http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=973

Identified by : ISLSCP_II_GIMMS_NDVI

This dataset was released on January 01, 2010.

The time range for this dataset is July 01, 1981 to December 31, 2002.

The spatial range for this dataset is -90° to 90° latitude, and -180° to 180° longitude. map (center)

This dataset uses data from an instance of the advanced-very-high-resolution-radiometer-2 instrument on the national-oceanic-and-atmospheric-administration-14 platform.
This dataset uses data from an instance of the moderate-resolution-imaging-spectroradiometer instrument on the terra platform.
DOI : 10.3334/ORNLDAAC/973
Also known as :

• dataset oai:mercury-ops2.ornl.gov:ornldaac_973 (ornl lexicon)
• dataset oai:mercury.ornl.gov:ornldaac_973 (ornl lexicon)