Literature DB >> 21817050

Reduced interannual rainfall variability in East Africa during the last ice age.

Christian Wolff1, Gerald H Haug, Axel Timmermann, Jaap S Sinninghe Damsté, Achim Brauer, Daniel M Sigman, Mark A Cane, Dirk Verschuren.   

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.

Entities:  

Year:  2011        PMID： 21817050     DOI： 10.1126/science.1203724

Source DB:  PubMed          Journal:  Science        ISSN： 0036-8075            Impact factor:   47.728


  11 in total

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Authors:  Esther N Githumbi; Colin J Courtney Mustaphi; Kevin J Yun; Veronica Muiruri; Stephen M Rucina; Rob Marchant
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10.  Long-term trends in rainfall and temperature using high-resolution climate datasets in East Africa.

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Journal:  Sci Rep       Date:  2019-08-06       Impact factor: 4.379
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