noaa-ocean-15537 Gulf of Aden 40,000 Year Leaf Wax Deuterium Data Tierney, J.E.; deMenocal, P.B. Gulf of Aden 40,000 Year Leaf Wax Deuterium Data 2013-11-22 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/15537 Investigator J.E. Tierney Investigator P.B. deMenocal earth science paleoclimate paleoceanography delta 2H,C30 n-alkanoic acid,null,per mil,null,paleoceanography,null,null,N,terrestrial leaf wax interpretation earth science paleoclimate paleoceanography age,null,95% confidence interval lower bound,calendar year before present,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 2H,C30 n-alkanoic acid,null,per mil,null,paleoceanography,corrected,null,N,ice-volume corrected; terrestrial leaf wax interpretation earth science paleoclimate paleoceanography depth,null,null,centimeter,null,paleoceanography,null,null,N,Last Glacial Maximum normalized to long-term mean earth science paleoclimate paleoceanography age,null,null,calendar year before present,null,paleoceanography,null,null,N,median earth science paleoclimate paleoceanography age,null,95% confidence interval upper bound,calendar year before present,null,paleoceanography,null,null,N,null earth science paleoclimate paleocean geochemistry geoscientificInformation hydrology 40066 cal yr BP 0 cal yr BP Complete 11.955 11.955 44.3 44.3 -869 -869 Ocean Indian Ocean Arabian Sea P178-15P>LATITUDE 11.955>LONGITUDE 44.3 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 Jessica E. Tierney and Peter B. deMenocal 2013 Science 342 6160 843-846 10.1126/science.1240411 http://www.sciencemag.org/content/342/6160/843.abstract

The timing and abruptness of the initiation and termination of the Early Holocene African Humid Period are subjects of ongoing debate, with direct consequences for our understanding of abrupt climate change, paleoenvironments, and early human cultural development. Here, we provide proxy evidence from the Horn of Africa region that documents abrupt transitions into and out of the African Humid Period in northeast Africa. Similar and generally synchronous abrupt transitions at other East African sites suggest that rapid shifts in hydroclimate are a regionally coherent feature. Our analysis suggests that the termination of the African Humid Period in the Horn of Africa occurred within centuries, underscoring the nonlinearity of the region's hydroclimate. STUDY NOTES: Hydrogen isotopic composition of leaf waxes (dDwax) from a sediment core in the Gulf of Aden, Arabian Sea, for the last 40,000 years, used as a proxy for hydroclimatic conditions in East Africa.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/tierney2013/tierney2013.txt USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11