noaa-ocean-21150 Atlantic Ocean Pliocene Planktonic and Benthic d18O and Mg/Ca Data Karas, C.; Nürnberg, D.; Bahr, A.; Groeneveld, J.; Herrle, J.O.; Tiedemann, R.; deMenocal, P.B. Atlantic Ocean Pliocene Planktonic and Benthic d18O and Mg/Ca Data 2017-01-04 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/21150 Investigator C. Karas Investigator D. Nürnberg Investigator A. Bahr Investigator J. Groeneveld Investigator J.O. Herrle Investigator R. Tiedemann Investigator P.B. deMenocal earth science paleoclimate paleoceanography delta 18O,Globigerina bulloides,null,per mil VPDB,null,paleoceanography,null,null,N,215-315um earth science paleoclimate paleoceanography depth,null,null,meter,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 18O,Trilobatus sacculifer without sac,null,per mil VPDB,null,paleoceanography,null,null,N,315-355um earth science paleoclimate paleoceanography magnesium/calcium,Trilobatus sacculifer without sac,null,millimole per mole,null,paleoceanography,null,null,N,315-355um earth science paleoclimate paleoceanography magnesium/calcium,Globigerina bulloides,null,millimole per mole,null,paleoceanography,null,null,N,215-315um earth science paleoclimate paleoceanography age,null,null,million years ago,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 18O,Cibicidoides wuellerstorfi,null,per mil VPDB,null,paleoceanography,null,null,N,null earth science paleoclimate paleocean geochemistry earth science paleoclimate paleocean oxygen isotopes geoscientificInformation 6002000 cal yr BP 2786000 cal yr BP Complete -30.2833 56.042667 -35.2833 -23.231333 -2301 -2301 Ocean Atlantic Ocean North Atlantic Ocean DSDP 552A>LATITUDE 56.042667>LONGITUDE -23.231333 Ocean Atlantic Ocean South Atlantic Ocean DSDP516A>LATITUDE -30.2833>LONGITUDE -35.2833 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 Cyrus Karas, Dirk Nürnberg, André Bahr, Jeroen Groeneveld, Jens O. Herrle, Ralf Tiedemann and Peter B. deMenocal 2017 Scientific Reports 3982 7 10.1038/srep39842 http://www.nature.com/articles/srep39842

Tectonically induced changes in oceanic seaways had profound effects on global and regional climate during the Late Neogene. The constriction of the Central American Seaway reached a critical threshold during the early Pliocene ~4.8-4 million years (Ma) ago. Model simulations indicate the strengthening of the Atlantic Meridional Overturning Circulation (AMOC) with a signature warming response in the Northern Hemisphere and cooling in the Southern Hemisphere. Subsequently, between ~4-3 Ma, the constriction of the Indonesian Seaway impacted regional climate and might have accelerated the Northern Hemisphere Glaciation. We here present Pliocene Atlantic interhemispheric sea surface temperature and salinity gradients (deduced from foraminiferal Mg/Ca and stable oxygen isotopes, d18O) in combination with a recently published benthic stable carbon isotope (d13C) record from the southernmost extent of North Atlantic Deep Water to reconstruct gateway-related changes in the AMOC mode. After an early reduction of the AMOC at ~5.3 Ma, we show in agreement with model simulations of the impacts of Central American Seaway closure a strengthened AMOC with a global climate signature. During ~3.8-3 Ma, we suggest a weakening of the AMOC in line with the global cooling trend, with possible contributions from the constriction of the Indonesian Seaway. STUDY NOTES: Combined planktonic foraminiferal Mg/Ca and d18O data, benthic d18O data and foraminiferal test weights from Deep Sea Drilling Project (DSDP) sites 516A and 552A (South and North Atlantic Oceans).

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/karas2017/karas2017dsdp516a.txt Data File; DSDP 516A Planktonic and Benthic d18O and Mg/Ca Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/karas2017/karas2017dsdp552a.txt Data File; DSDP 552A Planktonic and Benthic d18O and Mg/Ca Data USA/NOAA DIF Version 9.8.4 2019-05-06 2019-05-06