×
×

About Spatial Data Access Tool (SDAT)

 

  1. Home
  2. ISLSCP II UNIVERSITY OF MARYLAND GLOBAL LAND COVER CLASSIFICATIONS, 1992-1993

The objective of this study was to create a land cover map derived from 1 kilometer AVHRR data using all available bands and derived Normalized Difference Vegetation Index (NDVI) and a full year of data (April 1992-March 1993). This thematic map was resampled to 0.25, 0.5 and 1.0 degree grids for ISLSCP II. During this re-processing, the original University of Maryland (UMD) land cover type and fraction maps were adjusted to match the water/land fraction of the ISLSCP II land/water mask. These maps were generated for use by modelers of global biogeochemical cycles and others in need of an internally consistent, global depiction of land cover. This 1km map was also one of the MODIS (Moderate Resolution Imaging Spectroradiometer) at-launch land cover maps. The data set describes the geographic distributions of 13 classes of vegetation cover (plus water and unclassified classes) based on a modified International Geosphere-Biosphere Programme (IGBP) legend. The data set also provides the fraction of each of the 15 classes within the coarser resolution cells. The data set is provided at three spatial resolutions of 0.25, 0.5 and 1.0 degrees in latitude and longitude. We refer the reader to the reference below for more information on data processing of the original 1km data set.

DeFries, R.S. and M. Hansen. 2010. ISLSCP II University of Maryland Global Land Cover Classifications, 1992-1993. In Hall, Forrest G., G. Collatz, B. Meeson, S. Los, E. Brown de Colstoun, and D. Landis (eds.). ISLSCP Initiative II Collection. Data set. Available on-line [http://daac.ornl.gov/] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/969

       Visualize in Google Earth
       View Full Metadata
       Order data set in ORNL DAAC archive (non-WCS) format
       One-click download this data set

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

This data set contains 48 data granules
Granule Name Variables Metadata Preview Image
    1992-1993 Land Cover Classes (half-degree) land cover Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1992-04-01
End DateTime: 1993-03-31
1992-1993 Land Cover Classes (half-degree)
 
    1992-1993 Land Cover Classes (one-degree) land cover Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1992-04-01
End DateTime: 1993-03-31
1992-1993 Land Cover Classes (one-degree)
 
    1992-1993 Land Cover Classes (quarter-degree) land cover Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1992-04-01
End DateTime: 1993-03-31
1992-1993 Land Cover Classes (quarter-degree)
 
    1992-1993 Land Cover Fractions (half-degree) Barren land cover fraction Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1992-04-01
End DateTime: 1993-03-31
1992-1993 Land Cover Fractions (half-degree) Barren
 
    1992-1993 Land Cover Fractions (half-degree) Closed Bushlands land cover fraction Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1992-04-01
End DateTime: 1993-03-31
1992-1993 Land Cover Fractions (half-degree) Closed Bushlands
 
    1992-1993 Land Cover Fractions (half-degree) Croplands land cover fraction Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1992-04-01
End DateTime: 1993-03-31
1992-1993 Land Cover Fractions (half-degree) Croplands
 
    1992-1993 Land Cover Fractions (half-degree) Deciduous Broadleaf Forest land cover fraction Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1992-04-01
End DateTime: 1993-03-31
1992-1993 Land Cover Fractions (half-degree) Deciduous Broadleaf Forest
 
    1992-1993 Land Cover Fractions (half-degree) Deciduous Needleleaf Forests land cover fraction Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1992-04-01
End DateTime: 1993-03-31
1992-1993 Land Cover Fractions (half-degree) Deciduous Needleleaf Forests
 
    1992-1993 Land Cover Fractions (half-degree) Evergreeen Broadleaf Forest land cover fraction Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1992-04-01
End DateTime: 1993-03-31
1992-1993 Land Cover Fractions (half-degree) Evergreeen Broadleaf Forest
 
    1992-1993 Land Cover Fractions (half-degree) Evergreen Needleleaf Forest land cover fraction Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1992-04-01
End DateTime: 1993-03-31
1992-1993 Land Cover Fractions (half-degree) Evergreen Needleleaf Forest