×
×

About Spatial Data Access Tool (SDAT)

 

  1. Home
  2. ISLSCP II IGBP NPP OUTPUT FROM TERRESTRIAL BIOGEOCHEMISTRY MODELS

This data set contains modeled annual net primary production (NPP) for the land biosphere from seventeen different global models. Annual NPP is defined as the net difference of annual carbon uptake (grams CO2/m2/yr) from the atmosphere through photosynthesis by the land vegetation and that lost back to the atmosphere through autotrophic and maintenance respiration. NPP is also related to the Net Ecosystem Exchange (NEE) of carbon accumulated by or lost from the surface by its vegetation and soils. NPP is NEE plus heterotrophic (decomposition) respiration of the vegetation and soils. Only NPP values are included in this data set as some models did not estimate NEE. Data for the mean, standard deviation and coefficient of variation of NPP for the 17 models are provided at spatial resolutions of 1.0 degree and 0.5 degrees. There are two compressed (*.zip) data files with this data set.

       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 6 data granules
Granule Name Variables Metadata Preview Image
    Modeled Average Net Primary Productivity - 0.5 Degree Resolution NPP Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1931-01-01
End DateTime: 1987-12-31
Modeled Average Net Primary Productivity - 0.5 Degree Resolution
 
    Modeled Average Net Primary Productivity - One Degree Resolution NPP Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1931-01-01
End DateTime: 1987-12-31
Modeled Average Net Primary Productivity - One Degree Resolution
 
    Modeled Coefficient of Variation of Net Primary Productivity - 0.5 Degree Resolution coefficient of variation Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1931-01-01
End DateTime: 1987-12-31
Modeled Coefficient of Variation of Net Primary Productivity - 0.5 Degree Resolution
 
    Modeled Coefficient of Variation of Net Primary Productivity - One Degree Resolution coefficient of variation Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1931-01-01
End DateTime: 1987-12-31
Modeled Coefficient of Variation of Net Primary Productivity - One Degree Resolution
 
    Modeled Standard Deviation of Net Primary Productivity - 0.5 Resolution standard deviation Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1931-01-01
End DateTime: 1987-12-31
Modeled Standard Deviation of Net Primary Productivity - 0.5 Resolution
 
    Modeled Standard Deviation of Net Primary Productivity - One Degree Resolution standard deviation Projection: WGS 84
Spatial Extent: N: 90, S: -90, E: 180, W: -180
Start DateTime: 1931-01-01
End DateTime: 1987-12-31
Modeled Standard Deviation of Net Primary Productivity - One Degree Resolution