 MSWEP is a new global precipitation dataset designed to optimize the use of multiple sources of data in order to provide the best possible representation of precipitation over land surfaces. It combines high-resolution satellite and re-analysis data with ground-based measurements to produce a comprehensive and reliable dataset for hydrologic modeling. MSWEP outperforms existing datasets in terms of accuracy and reliability, making it ideal for hydrologic applications such as flood forecasting and drought monitoring. This article was authored by H. E. Beck, A. I. J. M. Van Dyke, V. Levizzani, and others.