This paper presents an analysis of future precipitation patterns over the Lake Victoria Basin, East Africa, based on bias-corrected CMIP6 model projections. The study predicts an increase in mean annual and seasonal precipitation climatology by mid-century, with a further intensification towards the end of the century. The projected changes have significant implications for the region, which is already experiencing conflicts over water resources.
This paper presents an analysis of future precipitation patterns over the Lake Victoria Basin, East Africa, using bias-corrected CMIP6 model projections. A mean increase of about 5% in mean annual (ANN) and seasonal [March-May (MAM), June-August (JJA), and October-December (OND)] precipitation climatology is expected over the domain by mid-century (2040-2069). The changes intensify towards the end of the century (2070-2099) with an increase in mean precipitation of about 16% (ANN), 10% (MAM), and 18% (OND) expected, relative to the 1985-2014 baseline period. Additionally, the mean daily precipitation intensity (SDII), the maximum 5-day precipitation values (RX5Day), and the heavy precipitation events-represented by the width of the right tail distribution of precipitation (99p-90p)-show an increase of 16%, 29%, and 47%, respectively, by the end of the century. The projected changes have a substantial implication for the region-which is already experiencing conflicts over water and water-related resources.
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