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Hydrological Drought Forecasting in Africa at Different Spatial and Temporal Scales (Hardcover)
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Hydrological Drought Forecasting in Africa at Different Spatial and Temporal Scales (Hardcover)
Series: IHE Delft PhD Thesis Series
Expected to ship within 12 - 17 working days
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Africa has been severely affected by droughts in the past,
contributing to food insecure conditions in several African
countries. In view of the (even more) severe drought conditions and
water shortage that may be expected in sub-Saharan Africa in the
coming years, efforts should focus on improving drought management
by ameliorating resilience and preparedness to drought. This study
contributes to the development of a modelling framework for
hydrological drought forecasting in sub-Saharan Africa as a step
towards an effective early warning system. The proposed
hydrological drought forecasting system makes use of a hydrological
model that was found to be suitable for drought forecasting in
Africa and could represent the most severe past droughts in the
Limpopo Basin. The modelling results showed that there is an added
value in computing indicators based on the hydrological model for
the identification of droughts and their severity. The proposed
seasonal forecasting system for the Limpopo Basin was found to be
skilful in predicting hydrological droughts during the summer rainy
season. The findings showed that the persistence of the initial
hydrological conditions contribute to the predictability up to 2 to
4 months, while for longer lead times the predictability of the
system is dominated by the meteorological forcing. An effective
drought forecasting and warning system will hopefully contribute to
important aspects in the region such as water security, food
security, hazard management, and risk reduction.
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