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Coastal oceanic climate change and variability from 1982 to 2009 around South Africa

Changes and fluctuations in sea surface temperature (SST) around the South African coast are analysed at a monthly scale from 1982 to 2009. There is a statistically significant negative trend of up…
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Warming in the Agulhas Current system since the 1980's

Since the 1980's, the sea surface temperature of the Agulhas Current system has increased significantly. The warming is due to an augmentation of its transport in response to an increase in wind…
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Influence of the Madden–Julian Oscillation on East African rainfall. I: Intraseasonal variability and regional dependency

The influence of the Madden–Julian Oscillation (MJO) on rainfall amounts over Equatorial East Africa (Kenya and northern Tanzania) is analysed for the period 1979–95 at the intraseasonal (pentad)…
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Influence of the Madden–Julian Oscillation on East African rainfall: II. March–May season extremes and interannual variability

The Madden–Julian Oscillation (MJO) was shown in Part I to have a significant impact on both East African rainy seasons at pentad time‐scale. The case of the ‘long rains’ (March–May) is further…
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Relationships between the Antarctic Oscillation, the Madden-Julian Oscillation, and ENSO, and Consequences for Rainfall Analysis

Abstract The Antarctic Oscillation (AAO) is the leading mode of atmospheric variability in the Southern Hemisphere mid- and high latitudes (south of 20°S). In this paper, the authors examine its…
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Testing WRF capability in simulating the atmospheric water cycle over Equatorial East Africa

Uncertainties in simulating the seasonal mean atmospheric water cycle in Equatorial East Africa are quantified using 58 one-year-long experiments performed with the Weather Research and Forecasting…
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Observed Changes in the Lifetime and Amplitude of the Madden-Julian Oscillation Associated with Interannual ENSO Sea Surface Temperature Anomalies

The Madden–Julian oscillation (MJO) is analyzed using the reanalysis zonal wind– and satellite outgoing longwave radiation–based indices of Wheeler and Hendon for the 1974–2005 period. The average…
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How do Tropical Temperate Troughs Form and Develop over Southern Africa

AbstractThis paper aims at separating the respective influences of tropical and midlatitude variability on the development and life cycle of tropical temperate troughs (TTTs) over southern Africa in…
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Uncertainties in simulating regional climate of Southern Africa: sensitivity to physical parameterizations using WRF

This study aims at quantifying seasonal biases of regional climate model outputs during southern African summer, against a dense in situ measurement network (daily rain-gauge and surface air…
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Recurrent daily OLR patterns in the Southern Africa/Southwest Indian Ocean region, implications for South African rainfall and teleconnections

A cluster analysis of daily outgoing longwave radiation (OLR) anomalies from 1979 to 2002 over the Southern Africa/Southwest Indian Ocean (SWIO) region for the November to February season reveals…
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