Reduced Interannual Rainfall Variability in East Africa During the Last Ice Age

Wolff, Christian; Haug, G. H.; Timmermann, A.; Sinninghe Damsté, J. S.; Brauer, Achim; Sigman, D. M.; Cane, M. A.; Verschuren, D.

doi:10.1126/science.1203724

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Reduced Interannual Rainfall Variability in East Africa During the Last Ice Age

Wolff, C., Haug, G. H., Timmermann, A., Sinninghe Damsté, J. S., Brauer, A., Sigman, D. M., Cane, M. A., Verschuren, D. (2011): Reduced Interannual Rainfall Variability in East Africa During the Last Ice Age. - Science, 333, 6043, 743-747.
https://doi.org/10.1126/science.1203724

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_243698 Version Permalink: -

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Wolff, Christian¹, Author
Haug, G. H.², Author
Timmermann, A.², Author
Sinninghe Damsté, J. S.², Author
Brauer, Achim¹, Author
Sigman, D. M.², Author
Cane, M. A.², Author
Verschuren, D.², Author

Affiliations:
15.2 Climate Dynamics and Landscape Evolution, 5.0 Earth Surface Processes, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146046
2External Organizations, ou_persistent22

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DDC: 550 - Earth sciences

Abstract: Interannual rainfall variations in equatorial East Africa are tightly linked to the El Niño Southern Oscillation (ENSO), with more rain and flooding during El Niño and droughts in La Niña years, both having severe impacts on human habitation and food security. Here we report evidence from an annually laminated lake sediment record from southeastern Kenya for interannual to centennial-scale changes in ENSO-related rainfall variability during the last three millennia and for reductions in both the mean rate and the variability of rainfall in East Africa during the Last Glacial period. Climate model simulations support forward extrapolation from these lake sediment data that future warming will intensify the interannual variability of East Africa’s rainfall.

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Dates: Finally published : 2011

Publication Status: Finally published

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Identifiers: eDoc: 17210
GFZPOF: PT2 Earth System Dynamics: Coupled Processes and Regional Impact
DOI: 10.1126/science.1203724

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Title: Science

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Pages: - Volume / Issue: 333 (6043) Sequence Number: - Start / End Page: 743 - 747 Identifier: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals442