noaa-cave-23510 Brazil 85,000 Year Speleothem Oxygen Isotope Data Stríkis, N.M.; Cruz, F.W.; Barreto, E.A.S.; Naughton, F.; Vuille, M.; Cheng, H.; Voelker, A.H.L.; Zhang, H.; Karmann, I.; Edwards, R.L.; Auler, A.S.; Santos, R.V.; Sales, H.R. Brazil 85,000 Year Speleothem Oxygen Isotope Data 2018-03-26 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/23510 Investigator N.M. Stríkis Investigator F.W. Cruz Investigator E.A.S. Barreto Investigator F. Naughton Investigator M. Vuille Investigator H. Cheng Investigator A.H.L. Voelker Investigator H. Zhang Investigator I. Karmann Investigator R.L. Edwards Investigator A.S. Auler Investigator R.V. Santos Investigator H.R. Sales earth science paleoclimate speleothems depth,null,null,millimeter,null,speleothems,null,null,N,null earth science paleoclimate speleothems delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,null,isotope ratio mass spectrometry,N,null earth science paleoclimate speleothems sample identification,null,null,null,null,speleothems,null,null,C,null earth science paleoclimate speleothems age,null,null,calendar kiloyear before present,null,speleothems,null,null,N,null earth science paleoclimate speleothems oxygen isotopes geoscientificInformation 84065 cal yr BP 12084 cal yr BP Complete -16.15 -12.5833 -44.6 -41.0333 Continent South America Brazil Marota Cave>LATITUDE -12.5833>LONGITUDE -41.0333 Continent South America Brazil Lapa Grande Cave>LATITUDE -14.4227>LONGITUDE -44.3656 Continent South America Brazil Paixão Cave>LATITUDE -12.65>LONGITUDE -41.05 Continent South America Brazil Lapa Sem Fim Cave>LATITUDE -16.15>LONGITUDE -44.6 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 Nicolás M. Stríkis, Francisco W. Cruz, Eline A. S. Barreto, Filipa Naughton, Mathias Vuille, Hai Cheng, Antje H. L. Voelker, Haiwei Zhang, Ivo Karmann, R. Lawrence Edwards, Augusto S. Auler, Roberto Ventura Santos and Hamilton Reis Sales 2018 Proceedings of the National Academy of Sciences 10.1073/pnas.1717784115 http://www.pnas.org/content/early/2018/03/20/1717784115

Heinrich Stadials significantly affected tropical precipitation through changes in the interhemispheric temperature gradient as a result of abrupt cooling in the North Atlantic. Here, we focus on changes in South American monsoon precipitation during Heinrich Stadials using a suite of speleothem records covering the last 85 ky B.P. from eastern South America. We document the response of South American monsoon precipitation to episodes of extensive iceberg discharge, which is distinct from the response to the cooling episodes that precede the main phase of ice-rafted detritus deposition. Our results demonstrate that iceberg discharge in the western subtropical North Atlantic led to an abrupt increase in monsoon precipitation over eastern South America. Our findings of an enhanced Southern Hemisphere monsoon, coeval with the iceberg discharge into the North Atlantic, are consistent with the observed abrupt increase in atmospheric methane concentrations during Heinrich Stadials. STUDY NOTES: Speleothem oxygen isotope (d18O) records from 4 caves in Brazil: Lapa Grande (LG), Lapa Sem Fim (LSF), Marota (MAG) and Paixão (PX), for the past 85,000 years.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/paixao2018d18o.txt NOAA Template File; Paixão Cave d18O Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/lapagrande2018d18o.txt NOAA Template File; Lapa Grande Cave d18O Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/marota2018d18o.txt NOAA Template File; Marota Cave d18O Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/lapasemfim2018d18o.txt NOAA Template File; Lapa Sem Fim Cave d18O Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11