Lake Challa, Kenya Holocene and LGM Varve Thickness Data Wolff, C.; Haug, G.H.; Timmermann, A.; Sinninghe Damsté, J.S.; Brauer, A.; Sigman, D.M.; Cane, M.A.; Verschuren, D. Wolff, C. Haug, G.H. Timmermann, A. Sinninghe Damsté, J.S. Brauer, A. Sigman, D.M. Cane, M.A. Verschuren, D. ENSO earth science/paleoclimate/paleolimnology (notes,null,null,count,null,paleolimnology,null,null,N,varve number) earth science/paleoclimate/paleolimnology (depth,null,null,centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (varve thickness,sediment,null,millimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (age,null,null,year Common Era,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (varve thickness,sediment,null,millimeter,null,paleolimnology,null,null,N,varve mineral layer thickness) earth science/paleoclimate/paleolimnology (varve thickness,sediment,null,millimeter,null,paleolimnology,null,null,N,varve organic layer thickness) earth science/paleoclimate/paleolimnology (Lake Challa>LATITUDE -3.3167>LONGITUDE 37.7) 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. STUDY NOTES: Varve thickness data from Lake Challa, Kenya/Tanzania for two, ~3,000-year intervals, 21 KYrBP - 18 KYrBP and 3000 YrBP to the present. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Wolff, C. Investigator : Haug, G.H. Investigator : Timmermann, A. Investigator : Sinninghe Damsté, J.S. Investigator : Brauer, A. Investigator : Sigman, D.M. Investigator : Cane, M.A. Investigator : Verschuren, D. 2012-02-24 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/12584 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/challa2011varve.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/challa2011varve.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/challa2011varve.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/challa2011varve.xls English https://www.ncdc.noaa.gov/paleo/study/12584 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/challa2011varve.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/challa2011varve.xls Wolff, C., G.H. Haug, A. Timmermann, J.S. Sinninghe Damsté, A. Brauer, D.M. Sigman, M.A. Cane, and D. Verschuren. 2011. Reduced Interannual Rainfall Variability in East Africa During the Last Ice Age. Science, Vol. 333, pp. 743 - 747 DOI: 10.1126/science.1203724 START YEAR: 21023 cal yr BP * END YEAR: -55 cal yr BP 37.7 -3.3167 37.7 -3.3167