noaa-ocean-19420 Gulf of Aden 40,000 Year UK37, Mg/Ca, d18O, and TEX86 Data Tierney, J.E.; Pausata, F.; deMenocal, P.B. Gulf of Aden 40,000 Year UK37, Mg/Ca, d18O, and TEX86 Data 2015-12-07 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19420 Investigator J.E. Tierney Investigator F. Pausata Investigator P.B. deMenocal earth science paleoclimate paleoceanography tetraether index of 86 carbon atoms,null,null,dimensionless,null,paleoceanography,null,isotope ratio mass spectrometry|liquid chromotography,N,null earth science paleoclimate climate reconstructions|paleoceanography sea surface temperature,alkenone unsaturation index,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,Indian Ocean SST calibration (Sonzogni et al. 1997 Quaternary Research) earth science paleoclimate paleoceanography age,null,null,calendar year before present,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography magnesium/calcium,null,null,dimensionless,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography alkenone unsaturation index Uk37 prime,null,null,dimensionless,null,paleoceanography,null,null,N,null earth science paleoclimate climate reconstructions|paleoceanography sea surface temperature,glycerol dialkyl glycerol tetraether index,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,BAYSPAR subsurface calibration (Tierney and Tingley 2015 Scientific Data); based on TEX86 earth science paleoclimate climate reconstructions|paleoceanography sea surface temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,New multivariate calibration developed for this study; see Supplementary Information; used G. ruber white earth science paleoclimate paleoceanography depth,null,null,centimeter,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 18O,null,null,per mil VSMOW,null,paleoceanography,null,null,N,null earth science paleoclimate paleocean geochemistry earth science paleoclimate paleocean biomarkers earth science paleoclimate paleocean oxygen isotopes earth science paleoclimate paleocean reconstruction geoscientificInformation Monsoon 39485 cal yr BP -18 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

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Jessica E. Tierney, Francesco S. R. Pausata, Peter deMenocal 2015 Nature Geoscience 10.1038/ngeo2603 http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2603.html

The Indian monsoon, the largest monsoon system on Earth, responds to remote climatic forcings, including temperature changes in the North Atlantic. The monsoon was weak during two cool periods that punctuated the last deglaciation - Heinrich Stadial 1 and the Younger Dryas. It has been suggested that sea surface cooling in the Indian Ocean was the critical link between these North Atlantic stadials and monsoon failure; however, based on existing proxy records it is unclear whether surface temperatures in the Indian Ocean and Arabian Sea dropped during these intervals. Here we compile new and existing temperature proxy data from the Arabian Sea, and find that surface temperatures cooled whereas subsurface temperatures warmed during both Heinrich Stadial 1 and the Younger Dryas. Our analysis of model simulations shows that surface cooling weakens the monsoon winds and leads to destratification of the water column and substantial subsurface warming. We thus conclude that sea surface temperatures in the Indian Ocean are indeed the link between North Atlantic climate and the strength of the Indian monsoon. STUDY NOTES: Gulf of Aden temperature proxy data, including UK'37, Mg/Ca of foraminifera (Globigerinoides ruber, white), d18O of G. ruber (white), and TEX86 measured on core P178-15P.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/tierney2015c/tierney2015c.txt Data File; Core P178-15P UK37, Mg/Ca, d18O, TEX86, and SST Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11