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Central United States cropland data provides gridded estimates of net primary productivity (NPP) for eight counties in 1992 and interannual NPP for Iowa from 1982 to 1996. The dataset, derived from USDA NASS crop area and yield statistics, also includes climate, soil texture, and land cover data for each 0.5-degree grid cell. It was produced by ORNL_CLOUD and the data files were last checked for accuracy in 2026, matching the original 2001 publication.
License is specified as 'other-license-specified'; users must review terms. File formats listed include PNG, ISO, ZIP, PDF, HTML, BIN, but the core data file is in CSV format.