×
×

About Spatial Data Access Tool (SDAT)

 

  1. Home
  2. ISLSCP II GIMMS MONTHLY NDVI, 1981-2002

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.

       Visualize in Google Earth
       View Documentation
       Order data set in ORNL DAAC archive (non-WCS) format

Use the links in the table below to view and download data using WCS.

This data set contains 66 data granules
Granule Name Variables Metadata Preview Image
    GIMMS Normalized Difference Vegetation Index 1981 (July-December) (1 degree-resolution) NDVI Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1981-07-01
End DateTime: 1981-12-31
GIMMS Normalized Difference Vegetation Index 1981 (July-December) (1 degree-resolution)
 
    GIMMS Normalized Difference Vegetation Index, 1981 (July-December) (0.25 degree-resolution) NDVI Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1981-07-01
End DateTime: 1981-12-31
GIMMS Normalized Difference Vegetation Index, 1981 (July-December) (0.25 degree-resolution)
 
    GIMMS Normalized Difference Vegetation Index, 1981 (July-December) (0.5 degree-resolution) NDVI Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1981-07-01
End DateTime: 1981-12-31
GIMMS Normalized Difference Vegetation Index, 1981 (July-December) (0.5 degree-resolution)
 
    GIMMS Normalized Difference Vegetation Index, 1982 (All months) (0.25 degree-resolution) NDVI Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1982-01-01
End DateTime: 1982-12-31
GIMMS Normalized Difference Vegetation Index, 1982 (All months) (0.25 degree-resolution)
 
    GIMMS Normalized Difference Vegetation Index, 1982 (All months) (0.5 degree-resolution) NDVI Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1982-01-01
End DateTime: 1982-12-31
GIMMS Normalized Difference Vegetation Index, 1982 (All months) (0.5 degree-resolution)
 
    GIMMS Normalized Difference Vegetation Index, 1982 (All months) (1 degree-resolution) NDVI Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1982-01-01
End DateTime: 1982-12-31
GIMMS Normalized Difference Vegetation Index, 1982 (All months) (1 degree-resolution)
 
    GIMMS Normalized Difference Vegetation Index, 1983 (All months) (0.25 degree-resolution) NDVI Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1983-01-01
End DateTime: 1983-12-31
GIMMS Normalized Difference Vegetation Index, 1983 (All months) (0.25 degree-resolution)
 
    GIMMS Normalized Difference Vegetation Index, 1983 (All months) (0.5 degree-resolution) NDVI Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1983-01-01
End DateTime: 1983-12-31
GIMMS Normalized Difference Vegetation Index, 1983 (All months) (0.5 degree-resolution)
 
    GIMMS Normalized Difference Vegetation Index, 1983 (All months) (1 degree-resolution) NDVI Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1983-01-01
End DateTime: 1983-12-31
GIMMS Normalized Difference Vegetation Index, 1983 (All months) (1 degree-resolution)
 
    GIMMS Normalized Difference Vegetation Index, 1984 (All months) (0.25 degree-resolution) NDVI Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1984-01-01
End DateTime: 1984-12-31
GIMMS Normalized Difference Vegetation Index, 1984 (All months) (0.25 degree-resolution)