Authors
Mxolisi E Shongwe, Chris Lennard, Brant Liebmann, Evangelia‐Anna Kalognomou, Lucky Ntsangwane, Izidine Pinto
Publication date
2015/7
Journal
Atmospheric Science Letters
Volume
16
Issue
3
Pages
199-207
Publisher
John Wiley & Sons, Ltd
Description
This article evaluates the ability of the Coordinated Regional Downscaling Experiment (CORDEX) regional climate models (RCMs) in simulating monthly rainfall variation during the austral summer half year (October to March) over southern Africa, the timing of the rainy season and the relative frequencies of rainfall events of varying intensities. The phasing and amplitude of monthly rainfall evolution and the spatial progression of the wet season onset are well simulated by the models. Notwithstanding some systematic biases in a few models, the simulated onset and end of the rainy season and their interannual variability are highly correlated with those computed from the reference data. The strongest agreements between the reference and modelled precipitation patterns are found north of about 20°S in the vicinity of the Inter Tropical Convergence Zone. A majority of the RCMs adequately capture the reference …
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