NPKGRIDS

We distribute in NPKGRIDS 173 georeferenced files in the NetCDF format (.NC), each reporting the crop-specific application rate of N, P2O5, and K2O fertilizers. The NC files contain the application rate in kg/ha-crop, the data quality, and the source data of the crop-nutrient pair. The geographic domain has a bounding box of (-180W, 180E) in longitude and (-90S, 90N) in latitude at a resolution of 0.05 degree per grid cell (i.e., ~5.55 km at the equator). All variables use the WGS84 coordinate system (Table 1). The 173 crop types have the same names as in Monfreda et al., (2008) but exclude coir and gums.