Earth observations from satellite measurements are used to infer variables such as rainfall, interception, evaporation, transpiration, biomass production, land use, soil moisture and water levels. Specific remote sensing data sets are acquired from dedicated centers or directly from the websites that they maintain. Non‑remote sensing water‑related data is taken from a few different global hydrological models. Many of these data sets are in the semi‑public domain, often because they are still in the testing phase. The water accounting team is indebted to these centers. Without their assistance, it is not feasible to develop a new global water resources product.