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The University of New Hampshire (UNH)/Global Runoff Data Centre (GRDC) composite runoff data combines simulated water balance model runoff estimates derived from climate forcing with monitored river discharge. It can be viewed as a data assimilation applied in a water balance model context (conceptually similar to the commonly used 4DDA techniques used in meteorological modeling). Such a data assimilation scheme preserves the spatial specificity of the water balance calculations while constrained by the more accurate discharge measurement. There are 11 data files in this data set and 1 changemap file which shows the differences between the ISLSCP II land/water mask and the original data set.     
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This data set contains 85 data granules
Page    Records per Page   
Granule Name Variables Metadata Preview Image
    1986 Annual Correction Coefficient 0.5-Degree correction coefficient Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1986-01-01
End DateTime: 1986-12-31		 1986 Annual Correction Coefficient 0.5-Degree
 
    1986 Annual Correction Coefficient 1-Degree correction coefficient Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1986-01-01
End DateTime: 1986-12-31		 1986 Annual Correction Coefficient 1-Degree
 
    1986 Annual Runoff Subbasins Map 0.5-Degree Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1986-01-01
End DateTime: 1986-12-31		 1986 Annual Runoff Subbasins Map 0.5-Degree
 
    1986 Annual Runoff Subbasins Map 1-Degree Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1986-01-01
End DateTime: 1986-12-31		 1986 Annual Runoff Subbasins Map 1-Degree
 
    1987 Annual Correction Coefficient 0.5-Degree correction coefficient Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1987-01-01
End DateTime: 1987-12-31		 1987 Annual Correction Coefficient 0.5-Degree
 
    1987 Annual Correction Coefficient 1-Degree correction coefficient Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1987-01-01
End DateTime: 1987-12-31		 1987 Annual Correction Coefficient 1-Degree
 
    1987 Annual Runoff Subbasins Map 0.5-Degree Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1987-01-01
End DateTime: 1987-12-31		 1987 Annual Runoff Subbasins Map 0.5-Degree
 
    1987 Annual Runoff Subbasins Map 1-Degree Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1987-01-01
End DateTime: 1987-12-31		 1987 Annual Runoff Subbasins Map 1-Degree
 
    1988 Annual Correction Coefficient 0.5-Degree correction coefficient Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1988-01-01
End DateTime: 1988-12-31		 1988 Annual Correction Coefficient 0.5-Degree
 
    1988 Annual Correction Coefficient 1-Degree correction coefficient Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1988-01-01
End DateTime: 1988-12-31		 1988 Annual Correction Coefficient 1-Degree
     
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