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Reduced interannual rainfall variability in East Africa during the Last Ice Age

(2011) SCIENCE. 333(6043). p.743-747
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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.
Keywords
SOUTHERN AFRICA, EQUATORIAL, GLACIAL MAXIMUM, INDIAN-OCEAN, SEA-SURFACE TEMPERATURE, ANOMALIES, SEDIMENTS, HOLOCENE, TERRESTRIAL, OSCILLATION

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Citation

Please use this url to cite or link to this publication:

Chicago
Wolff, Christian, Gerald H Haug, Axel Timmermann, Jaap S Sinninghe Damsté, Achim Brauer, Daniel M Sigman, Mark A Cane, and Dirk Verschuren. 2011. “Reduced Interannual Rainfall Variability in East Africa During the Last Ice Age.” Science 333 (6043): 743–747.
APA
Wolff, Christian, Haug, G. H., Timmermann, A., Sinninghe Damsté, J. S., Brauer, A., Sigman, D. M., Cane, M. A., et al. (2011). Reduced interannual rainfall variability in East Africa during the Last Ice Age. SCIENCE, 333(6043), 743–747.
Vancouver
1.
Wolff C, Haug GH, Timmermann A, Sinninghe Damsté JS, Brauer A, Sigman DM, et al. Reduced interannual rainfall variability in East Africa during the Last Ice Age. SCIENCE. 2011;333(6043):743–7.
MLA
Wolff, Christian, Gerald H Haug, Axel Timmermann, et al. “Reduced Interannual Rainfall Variability in East Africa During the Last Ice Age.” SCIENCE 333.6043 (2011): 743–747. Print.
@article{4093155,
  abstract     = {Interannual rainfall variations in equatorial East Africa are tightly linked to the El Ni{\~n}o Southern Oscillation (ENSO), with more rain and flooding during El Ni{\~n}o and droughts in La Ni{\~n}a 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{\textquoteright}s rainfall.},
  author       = {Wolff, Christian and Haug, Gerald H and Timmermann, Axel and Sinninghe Damst{\'e}, Jaap S and Brauer, Achim and Sigman, Daniel M and Cane, Mark A and Verschuren, Dirk},
  issn         = {0036-8075},
  journal      = {SCIENCE},
  keyword      = {SOUTHERN AFRICA,EQUATORIAL,GLACIAL MAXIMUM,INDIAN-OCEAN,SEA-SURFACE TEMPERATURE,ANOMALIES,SEDIMENTS,HOLOCENE,TERRESTRIAL,OSCILLATION},
  language     = {eng},
  number       = {6043},
  pages        = {743--747},
  title        = {Reduced interannual rainfall variability in East Africa during the Last Ice Age},
  url          = {http://dx.doi.org/10.1126/science.1203724},
  volume       = {333},
  year         = {2011},
}

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