{"xmlId":"77232","NOAAStudyId":"35673","studyName":"Chew Bahir Basin, Ethiopia, Leaf Wax Hydrogen and Carbon Isotope Data, mid to late Pleistocene","doi":"https://doi.org/10.25921/39en-a034","uuid":"2a2e7b03-8555-492e-a63b-92132fa3a6b0","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"constraints":"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."},"dataType":"PALEOLIMNOLOGY","investigators":"Lupien, R.L.; Russell, J.M.; Pearson, E.P.; Castaņeda, I.S.; Asrat, A.A.; Foerster, V.F.; Lamb, H.F.; Roberts, H.R.; Shabitz, F.S.; Trauth, M.T.; Beck, C.; Feibel, C.; Cohen, A.S.","investigatorDetails":[{"firstName":"Rachel","lastName":"Lupien","initials":"R.L.","orcId":"0000-0002-5618-8829"},{"firstName":"James","lastName":"Russell","initials":"J.M.","orcId":"0000-0002-1329-4613"},{"firstName":"Emma","lastName":"Pearson","initials":"E.P.","orcId":null},{"firstName":"Isla","lastName":"Castaņeda","initials":"I.S.","orcId":"0000-0002-2524-9326"},{"firstName":"Asfawossen","lastName":"Asrat","initials":"A.A.","orcId":"0000-0002-6312-8082"},{"firstName":"Verena","lastName":"Foerster","initials":"V.F.","orcId":null},{"firstName":"Henry","lastName":"Lamb","initials":"H.F.","orcId":"0000-0003-0025-0766"},{"firstName":"Helen","lastName":"Roberts","initials":"H.R.","orcId":null},{"firstName":"Frank","lastName":"Shabitz","initials":"F.S.","orcId":null},{"firstName":"Martin","lastName":"Trauth","initials":"M.T.","orcId":null},{"firstName":"Catherine","lastName":"Beck","initials":"C.","orcId":null},{"firstName":"Craig","lastName":"Feibel","initials":"C.","orcId":null},{"firstName":"Andrew","lastName":"Cohen","initials":"A.S.","orcId":"0000-0001-9995-9489"}],"version":"1.0","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"EAR 1826938, EAR 1123942, BCS 1241859"},{"fundingAgency":"International Continental Drilling Program (ICDP)","fundingGrant":null},{"fundingAgency":"Deutsche Forschungsgemeinschaft (DFG)","fundingGrant":"Priority Program SPP 1006,ICSP SCHA 472/13 and /18, TR 419/8 and /10, Collaborative Research Centre 806 5744011"},{"fundingAgency":"UK Natural Environment Research Council (NERC)","fundingGrant":"NE/K014560/1"}],"studyNotes":"High-resolution carbon isotopes from plant waxes and bulk organic matter from the Koora Basin near Olorgesailie describing vegetation and environmental change since 1 Ma.\r\nProvided Keywords: Paleoclimate, East Africa, Organic geochemistry, Biomarkers, Precipitation, Human Evolution","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/35673","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-35673.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-lake-35673.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/lake","studyCode":null,"scienceKeywords":["Vegetation Reconstruction"],"reconstruction":"Y","contributionDate":"2022-02-24","entryId":"noaa-lake-35673","earliestYearBP":587970,"mostRecentYearBP":1210,"earliestYearCE":-586020,"mostRecentYearCE":740,"publication":[{"author":{"name":"Rachel L. Lupien, James M. Russell, Emma J. Pearson, Isla S. Castaņeda, Asfawossen Asrat, Verena Foerster, Henry F. Lamb, Helen M. Roberts, Frank Schäbitz, Martin H. Trauth, Catherine C. Beck, Craig S. Feibel & Andrew S. Cohen"},"pubYear":2022,"title":"Orbital Controls on eastern African hydroclimate in the Pleistocene","journal":"Scientific Reports","volume":"12","edition":null,"issue":null,"pages":null,"reportNumber":"3170","citation":"Rachel L. Lupien, James M. Russell, Emma J. Pearson, Isla S. Castaņeda, Asfawossen Asrat, Verena Foerster, Henry F. Lamb, Helen M. Roberts, Frank Schäbitz, Martin H. Trauth, Catherine C. Beck, Craig S. Feibel & Andrew S. Cohen. 2022. Orbital Controls on eastern African hydroclimate in the Pleistocene. Scientific Reports, 12, 3170. doi: 10.1038/s41598-022-06826-z","type":"publication","identifier":{"type":"doi","id":"10.1038/s41598-022-06826-z","url":"http://dx.doi.org/10.1038/s41598-022-06826-z"},"abstract":"Understanding eastern African paleoclimate is critical for contextualizing early human evolution, adaptation, and dispersal, yet Pleistocene climate of this region and its governing mechanisms remain poorly understood due to the lack of long, orbitally-resolved, terrestrial paleoclimate records. Here we present leaf wax hydrogen isotope records of rainfall from paleolake sediment cores from key time windows that resolve long-term trends, variations, and high-latitude effects on tropical African precipitation. Eastern African rainfall was dominantly controlled by variations in low-latitude summer insolation during most of the early and middle Pleistocene, with little evidence that glacialinterglacial cycles impacted rainfall until the late Pleistocene. We observe the influence of high-latitude-driven climate processes emerging from the last interglacial (Marine Isotope Stage 5) to the present, an interval when glacialinterglacial cycles were strong and insolation forcing was weak. Our results demonstrate a variable response of eastern African rainfall to low-latitude insolation forcing and high-latitude-driven climate change, likely related to the relative strengths of these forcings through time and a threshold in monsoon sensitivity. We observe little difference in mean rainfall between the early, middle, and late Pleistocene, which suggests that orbitally-driven climate variations likely played a more significant role than gradual change in the relationship between early humans and their environment.","pubRank":"1"}],"site":[{"NOAASiteId":"59287","siteName":"HSPDP-CHB14-2A and HSPDP-CHB14-2B","siteCode":null,"mappable":"Y","locationName":"Continent>Africa>Eastern Africa>Ethiopia","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["4.7612","36.7667"]},"properties":{"southernmostLatitude":"4.7612","northernmostLatitude":"4.7612","westernmostLongitude":"36.7667","easternmostLongitude":"36.7667","minElevationMeters":"570","maxElevationMeters":"570"}},"paleoData":[{"dataTableName":"HSPDP cores_chewbahir2022_dD","NOAADataTableId":"48239","earliestYear":587970,"mostRecentYear":1210,"timeUnit":"cal yr 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