Global ETD Search
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Showing 1 to 11 of 11 for “"subtropical southern Africa"”.
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Drylines over the interior of subtropical southern Africa
… Drylines regularly form over the interior of subtropical southern Africa and have also been associated with thunderstorm development and often severe thunderstorm initiation, but their seasonal characteristics, formation mechanisms and the extent to which they influence convection, are largely …
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Investigations on rainfall variability during the late Quaternary based on geochemical analyses of lake sediments from tropical and subtropical southern Africa
… presents investigations on sediments from two African lakes which have been recording changes in their surrounding environmental and climate conditions since more than 200,000 years. Focus of this work is the time of the last Glacial and the Holocene (the last ~100,000 years before present [in …
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Mesoscale convective complexes over southern Africa
… and local sea surface temperatures, ensures that subtropical southern Africa experiences considerable spatial and temporal variability in rainfall and is prone to both frequent flooding and drought events.
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The representation of the Kalahari thermal low and its induced circulations over Southern Africa in observations and models
… investigated the impacts of different drivers on southern Africa's precipitation. But the influence of the Kalahari thermal low (KTL) on the southern Africa precipitation is overlooked and deserve more attention. In austral summer, the Botswana high and the Angola low are highly dependent to each …
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The representation of the Kalahari Thermal Low and its induced circulations over southern Africa in observations and models
… investigated the impacts of different drivers on southern Africa's precipitation. But the influence of the Kalahari thermal low (KTL) on the southern Africa precipitation is overlooked and deserve more attention. In austral summer, the Botswana high and the Angola low are highly dependent to each …
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Extreme rainfall events over the Pongola-Mtamvuna Water Management Area of South Africa
Subtropical southern Africa experiences substantial rainfall variability both spatially and temporally, due to regional orography, geographic position, and local sea-surface temperatures. Extreme weather conditions such as droughts and floods are not uncommon and can result in both positive and …
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Simulating the Characteristics and Influences of the Botswana High over Southern Africa using the Model for Prediction Across Scales (MPAS)
… system that modulates rainfall over subtropical Southern Africa, but the capability of a Global Climate Model (GCM) to reproduce the characteristics and influences of this system on drought remains unknown. Furthermore, the summer variability of the Botswana High has been linked to …
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Numerical modelling of the Angola Low and the Botswana High during a neutral and two El Ni˜no summers
… role in the variability of summer rainfall over southern Africa. However, very little is known about their variability during the summer half of the year and how their influence on rainfall patterns during ENSO and non-ENSO summers may vary. In simple terms, a weaker Angola Low is expected to …
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Early summer rainfall variability in the Congo Air Boundary Region
… the tropics and subtropics in southwestern Africa, bounded to the north by the moist Congo basin and the south by the Kalahari Desert. This region termed the tropical-subtropical divide (TSD) here, has recently faced one of the worst droughts in the last 40 years, contributing to local food …
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An analysis of heavy rainfall events over the Limpopo River Basin in southern Africa, their moisture sources and pathways
Severe flooding events in subtropical southern Africa are not uncommon and can cause damage to infrastructure, lead to huge economic losses, and fatalities. Although extreme rainfall events can have far-reaching negative consequences, they can also provide large amounts of freshwater within a short …
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Upper ocean variability and tropical cyclones in the South West Indian Ocean
… social and economic damage in southeastern Africa and Madagascar. To forecast TC intensity more accurately, monitoring upper ocean conditions in the South Indian Ocean is of top priority. Two areas in the relatively poorly studied South Indian Ocean where such upper ocean characteristics of …