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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Assessment of the performance of CORDEX regional climate models in simulating East African rainfall
Journal of Climate, Volume 26, No. 21, Year 2013
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Description
This study evaluates the ability of 10 regional climate models (RCMs) from the Coordinated Regional Climate Downscaling Experiment (CORDEX) in simulating the characteristics of rainfall patterns over eastern Africa. The seasonal climatology, annual rainfall cycles, and interannual variability of RCM output have been assessed over three homogeneous subregions against a number of observational datasets. The ability of the RCMs in simulating large-scale global climate forcing signals is further assessed by compositing the El Ninõ-Southern Oscillation (ENSO) and Indian Ocean dipole (IOD) events. It is found that most RCMs reasonably simulate the main features of the rainfall climatology over the three subregions and also reproduce the majority of the documented regional responses to ENSO and IOD forcings. At the same time the analysis shows significant biases in individual models depending on subregion and season; however, the ensemble mean has better agreement with observation than individual models. In general, the analysis herein demonstrates that the multimodel ensemble mean simulates eastern Africa rainfall adequately and can therefore be used for the assessment of future climate projections for the region. © 2013 American Meteorological Society.
Authors & Co-Authors
Endris, Hussen Seid
South Africa, Cape Town
University of Cape Town
Omondi, Philip Aming O.
Kenya, Nairobi
Igad Climate Prediction and Applications Centre Icpac
Jain, Suman
Zambia, Lusaka
University of Zambia
Lennard, Christopher J.
South Africa, Cape Town
University of Cape Town
Hewitson, Bruce C.
South Africa, Cape Town
University of Cape Town
Chang'a, Ladislaus B.
Tanzania, Dar es Salaam
Tanzania Meteorological Agency
Awange, J. L.
Australia, Perth
The Institute for Geoscience Research
Dosio, Alessandro
Belgium, Brussels
European Commission Joint Research Centre
Ketiem, Patrick
Kenya, Nairobi
Kenya Agricultural Research Institute
Nikulin, Grigory N.
Sweden, Norrkoping
Swedish Meteorological and Hydrological Institute
Panitz, Hans Jürgen
Germany, Karlsruhe
Karlsruher Institut Für Technologie
Büchner, Matthias
Germany, Potsdam
Potsdam Institut Fur Klimafolgenforschung
Stordal, Frode
Norway, Oslo
Universitetet I Oslo
Tazalika, Lukiya
Uganda, Kampala
Uganda National Meteorological Authority
Statistics
Citations: 208
Authors: 14
Affiliations: 12
Identifiers
Doi:
10.1175/JCLI-D-12-00708.1
ISSN:
08948755
Study Approach
Quantitative