noaa-ocean-18035 Western Pacific Warm Pool Oxygen Isotope and Mg/Ca Data and SST Reconstruction during the Pleistocene Dyez, K.A.; Ravelo, A.C. Western Pacific Warm Pool Oxygen Isotope and Mg/Ca Data and SST Reconstruction during the Pleistocene 2015-02-20 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/18035 Investigator K.A. Dyez Investigator A.C. Ravelo earth science paleoclimate paleoceanography age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography depth,null,null,meter,null,paleoceanography,null,null,N,null earth science paleoclimate climate reconstructions|paleoceanography sea surface temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,Using formula from Dyez and Ravelo(2013); Mg/Ca Globigerinoides ruber white earth science paleoclimate paleoceanography delta 18O,Uvigerina sp.,null,per mil VPDB,null,paleoceanography,null,null,N,250-355 µm earth science paleoclimate paleoceanography magnesium/calcium,Globigerinoides ruber white,null,millimole per mole,null,paleoceanography,null,null,N,250-355 µm earth science paleoclimate paleocean geochemistry earth science paleoclimate paleocean oxygen isotopes earth science paleoclimate paleocean reconstruction geoscientificInformation Sea Surface Temperature Reconstruction Warm Pool 1412000 cal yr BP 45000 cal yr BP Complete 5.5572 5.5572 172.3443 172.3443 -1254 -1254 Ocean Pacific Ocean Western Pacific Ocean ODP 871>LATITUDE 5.5572>LONGITUDE 172.3443 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 Dyez, K.A. and A.C. Ravelo 2014 Geophysical Research Letters 41 21 7626-7633 10.1002/2014GL061639

In the late Pleistocene, the atmospheric carbon dioxide concentration (pCO2) is thought to be a primary driving force for tropical sea surface temperature (SST) change because glacial-interglacial changes in tropical Pacific SST covary with pCO2. However, if the regional radiative effects of pCO2 were the only agent of change, tropical SST gradients should have remained similar as pCO2 varied with time. Instead, a new record of SST from the west Pacific shows that tropical SST gradients were different, even reversed, in the past, suggesting an important role for dynamical circulation changes. Specifically, changes in the temperature of upwelled source water, in addition to local pCO2 forcing, influenced tropical Pacific SST. These dynamical changes, rather than pCO2, may have shifted the background state of the tropics and even helped set the stage for the mid-Pleistocene transition. STUDY NOTES: These are data from the western Pacific warm pool, derived from sediments of Site 871, retrieved as part of ODP drilling. The dataset contains both oxygen isotopic values measured on benthic foraminifera and Mg/Ca values measured on planktic foraminifera. Included is the estimated sea surface temperature value, derived from planktic Mg/Ca.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/dyez2014-grl/dyez2014-grl.txt Formatted Text File; ODP871 d18O, Mg/Ca and SST Reconstruction USA/NOAA DIF Version 9.8.4 2019-04-29 2019-04-29