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Progress in regional downscaling of west African precipitation

Atmospheric Science Letters2011Vol. 12(1), pp. 75–82

Citations Over TimeTop 10% of 2011 papers

Heiko Paeth, Nicholas M. J. Hall, Μiguel Angel Gaertner, Marta Domínguez Alonso, Sounmaïla Moumouni, Jan Polcher‬, Paolo Ruti, Andreas H. Fink, Marielle Gosset, Thierry Lebel, Amadou Thierno Gaye, David P. Rowell, Wilfran Moufouma‐Okia, Daniela Jacob, Burkhardt Rockel, Filippo Giorgi, Markku Rummukainen

Abstract

Abstract We review the recent progress in dynamical and statistical downscaling approaches for west African precipitation and perform a regional climate model (RCM) intercomparison using the novel multi‐model RCM data set from the Ensembles‐based Predictions of Climate Changes and Their Impacts (ENSEMBLES) and African Monsoon Multidisciplinary Analyses (AMMA) projects. Present RCMs have distinct systematic errors in terms of west African precipitation varying in amplitude and pattern across models. This is also reflected in a relatively large spread in projected future precipitation trends. Altogether, the ENSEMBLES RCMs indicate a prevailing drying tendency in sub‐Saharan Africa. Statistical post‐processing of simulated precipitation is a promising tool to reduce systematic model errors before application in impact studies. Copyright © 2011 Royal Meteorological Society

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