Estimating errors and uncertainties of precipitation in regional climate simulations over southern Africa: investigation of physical processes
Abstract
The climate of southern Africa is characterized by a plethora of distinct permanent and semi permanent atmospheric features that are interconnected at various levels of complexity, both over land and over the two adjacent oceans. The current Thesis aims to provide a comprehensive overview of the modeled and observed precipitation climatology over southern Africa, in all tools that are currently available in the climate community. Additionally, it aims to investigate the impact that the lateral boundary conditions exert on Regional Climate Model (RCM) simulations performed in the context of CORDEX-Africa, and to further investigate the dynamical processes over the study region that are responsible for precipitation in the CORDEX-Africa ensemble. Lastly, a series of RCM simulations using the Weather Research and Forecasting (WRF) model is used, with the purpose to examine the impact of cumulus parameterization schemes on precipitation over southern Africa.It is concluded that RCM simulat ...
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