Reduced interannual rainfall variability in East Africa during the last Ice Age
- Interannual rainfall variations in equatorial East Africa are tightly linked to the El Nino Southern Oscillation (ENSO), with more rain and flooding during El Nino and droughts in La Nina 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.
| Verfasserangaben: | Christian Michael WolffORCiDGND, Gerald H. Haug, Axel Timmermann, Jaap S. Sinninghe Damste, Achim BrauerORCiDGND, Daniel M. Sigman, Mark A. Cane, Dirk Verschuren |
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| DOI: | https://doi.org/10.1126/science.1203724 |
| ISSN: | 0036-8075 |
| Titel des übergeordneten Werks (Englisch): | Science |
| Verlag: | American Assoc. for the Advancement of Science |
| Verlagsort: | Washington |
| Publikationstyp: | Wissenschaftlicher Artikel |
| Sprache: | Englisch |
| Jahr der Erstveröffentlichung: | 2011 |
| Erscheinungsjahr: | 2011 |
| Datum der Freischaltung: | 26.03.2017 |
| Band: | 333 |
| Ausgabe: | 6043 |
| Seitenanzahl: | 5 |
| Erste Seite: | 743 |
| Letzte Seite: | 747 |
| Fördernde Institution: | European Science Foundation; DFG; Leibniz Center for Earth Surface Process and Climate Studies; NSF [AGS-1010869]; Japan Agency for Marine-Earth Science and Technology (JAMSTEC) |
| Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geowissenschaften |
| Peer Review: | Referiert |
