Skillful and high-resolution datasets are critical if climate change is to be fully assimilated into water resources management and planning strategies. This is, however, a challenge for data-poor parts of the globe like Africa where adaptive capacity is also a challenge. Global datasets are also often not sufficient, as they come in coarse resolutions that are limited. Global reanalyses continue to help alleviate this challenge when they are downscaled to useful resolution, especially at the basin scale. This chapter provides an overview of dynamical downscaling of global reanalyses to useful resolution. The usefulness of dynamical downscaling through providing relatively high resolution and skillful datasets is also highlighted as very important for climate impact studies, especially with regard to data-sparse regions of Africa.

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