 Multisource weighted ensemble precipitation, MSWEP version 1.1 is a new global precipitation data set designed for hydrologic modeling. It combines the best features of multiple precipitation data sets, including satellite remote sensing, reanalysis models, and ground-based observations to provide a high-resolution, high-quality precipitation product. MSWEP version 1.1 has been validated against independent observations from 125 flux net sites and 9,011 catchments worldwide. It outperforms existing precipitation products in terms of accuracy and consistency, providing a reliable source of precipitation information for hydrologic modeling applications. This article was authored by H.E. Beck, A.I.J.M. Van Dyke, V. Levazzani, and others.