noaa-lake-16677 Lake Albert, East Africa 7-14KYrBP TEX86 and Leaf Wax dD and d13C Data Berke, M.A.; Johnson, T.C.; Werne, J.P.; Livingstone, D.A.; Grice, K.; Schouten, S.; Sinninghe Damsté, J.S. Lake Albert, East Africa 7-14KYrBP TEX86 and Leaf Wax dD and d13C Data 2014-06-18 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/16677 Investigator M.A. Berke Investigator T.C. Johnson Investigator J.P. Werne Investigator D.A. Livingstone Investigator K. Grice Investigator S. Schouten Investigator J.S. Sinninghe Damsté earth science paleoclimate paleolimnology tetraether index of 86 carbon atoms,null,null,dimensionless,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 13C,n-alkanoic acid,null,per mil PDB,null,paleolimnology,averaged,null,N,C-29 + C-31 + C33 acids earth science paleoclimate paleolimnology branched and isoprenoid tetraether index,null,null,null,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology sample identification,null,null,null,null,paleolimnology,null,null,C,null earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,averaged,null,N,average of replicates earth science paleoclimate paleolimnology depth,null,null,meter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 13C,n-alkanoic acid,unspecified margin of error,per mil PDB,null,paleolimnology,averaged,null,N,C-29 + C-31 + C33 acids earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,averaged|corrected,null,N,average of replicates; corrected for ice volume earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,unspecified margin of error,per mil VSMOW,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology geochemistry geoscientificInformation hydrology 14334 cal yr BP 7117 cal yr BP Complete 1.835 1.835 31.17 31.17 615 615 Continent Africa Eastern Africa Lake Albert Core F>LATITUDE 1.835>LONGITUDE 31.17 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Melissa A. Berke, Thomas C. Johnson, Josef P. Werne, Daniel A. Livingstone, Kliti Grice, Stefan Schouten, Jaap S. Sinninghe Damsté 2014 Palaeogeography, Palaeoclimatology, Palaeoecology 409 1-8 10.1016/j.palaeo.2014.04.014 http://www.sciencedirect.com/science/article/pii/S0031018214001977

New biomarker analyses from Lake Albert, East Africa spanning ~15-9 ka show the most extreme, abrupt, multi-stage climate and environmental shifts during the last deglacial transition of anywhere in Africa. Records of hydroclimate expressed in compound specific dD values from terrestrial leaf waxes and a TEX86 paleotemperature record support multiple stages of pronounced drying and cooling from 13.8 to 11.5 ka and demonstrate the dynamic behavior of the low latitude tropics during the deglaciation. The vegetation response, illustrated by compound specific d13C values and fossil pollen records, was an expansion of C4 grassland when the region was cool and arid. These results advance our understanding of a spatially and temporally complex regional response to global climate forcing, suggesting weakening of the Indian Ocean monsoon at the end of the Pleistocene that coincides with a minor decrease in the rate of the Atlantic Meridional Overturning Circulation (AMOC) and during a time of stepwise cooling in the northern high latitudes. STUDY NOTES: This dataset includes TEX86, dD of leaf wax n-alkanoic acids (C28 chain length), and d13C of n-alkane (weighted mean of the C29, C31, C33 chain lengths). TEX86 data includes TEX86 value and calibrated temperature (using Kim et al., 2010 as described in the text). This dataset also includes BIT Index determined. dD dataset includes the leaf wax n-alkanoic value (mean of multiple measurements, with standard deviation indicated). d13C n-alkane data was based on the weighted mean of the C29, C31, C33 chain lengths (most abudant long chain lengths). Standard deviation of replicates is shown.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/albert2014.txt USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11