The Joint IPWG/GEWEX Precipitation Assessment




Roca, Rémy
Haddad, Ziad S.
Akimoto, Fumie F.
Alexander, Lisa
Behrangi, Ali
Huffman, George
Kato, Seiji
Kidd, Chris
Kirstetter, Pierre-Emmanuel
Kubota, Takuji

Journal Title

Journal ISSN

Volume Title


World Climate Research Programme


This report reviews the current state of precipitation products, and includes assessments of sub-daily global satellite precipitation products, discussions of various climate applications of precipitation products, and deliberations on emerging directions and the future of precipitation products.



Precipitation products, Uncertainty, Level-3, Water and energy budget, Water and energy budget closure, Climate variability, Trends, Quality Assurance, Climate models, Climate model validation, Product intercomparison, Global mean precipitation, Precipitation processes, Climate model evaluation, Future precipitation products, Uncertainty estimation, Snow, Radar, Future precipitation constellation


Roca, R., Z.S. Haddad, F.F. Akimoto, L. Alexander, A. Behrangi, G. Huffman, S. Kato, C. Kidd, P.E. Kirstetter, T. Kubota, C. Kummerow, T.S. L’Ecuyer, V. Levizzani, V. Maggioni, C. Massari, H. Masunaga, M. Schröder, F.J. Tapiador, F.J. Turk and N. Utsumi, 2021: The Joint IPWG/GEWEX Precipitation Assessment. WCRP Report 2/2021, World Climate Research Programme (WCRP): Geneva, Switzerland, 125 pp.