- •Global—Inputs include rainfall, temperature, photosynthetically active radiation, and potential biomass. Outputs on this level are assessments of environmental indices for sixty crop production system zones.
- •Regional—Inputs include the vegetation health index, uncropped arable land, cropping intensity, and maximum values for the vegetation condition index during the growing season. Outputs are information on agricultural patterns, farming intensity, and biomass trends in six major production zones in the world.
- •National—Inputs are NDVI, crop cultivation area, and time profile clustering. Outputs are information on cropland use intensity, crop condition, yield, and production, for each of thirty key countries and China, together representing at least 80 percent of global production of the major cereals and soybean.
- •Sub-national—For large countries, analysis is performed on a sub-national level. In the case of China, additional information on crop planting structure is analyzed. Outputs on the sub-national level are similar to those on the national level, but with more detailed information
Data sources and additional information
CropWatch currently mostly relies on publicly available satellite remote sensing and in situ data. Detailed descriptions of CropWatch methodology and definition of spatial units are posted with each bulletin and on the bulletin page, with additional detail provided in the publications. Because of the relative newness of some of the methods and data, further adjustments of the methodologies are expected for future bulletins, to incorporate ongoing research on the data and experimental methodologies, as well as feedback on these initial approaches.