{"NOAAStudyId":"25810","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"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.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2018-12-07","dataPublisher":"NOAA","dataType":"SPELEOTHEMS","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/speleothem","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-cave-25810.xml","doi":null,"earliestYearBP":222448,"earliestYearCE":-220498,"entryId":"noaa-cave-25810","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"BCS-1118155, BCS-1118183, AGS-135539"}],"investigators":"Denniston, R.F.; Houts, A.N.; Asmerom, Y.; Wanamaker, A.D.; Haws, J.A.; Polyak, V.J.; Thatcher, D.L.; Altan-Ochir, S.; Borowske, A.C.; Breitenbach, S.F.M.; Ummenhofer, C.C.; Regala, F.T.; Benedetti, M.M.; Bicho, N.F.","mostRecentYearBP":1319,"mostRecentYearCE":631,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/25810","originalSource":null,"publication":[{"abstract":"Close coupling of Iberian hydroclimate and North Atlantic sea surface temperature (SST) during recent glacial periods has been identified through the analysis of marine sediment and pollen grains co-deposited on the Portuguese continental margin. While offering precisely correlatable records, these time series have lacked a directly dated, site-specific record of continental Iberian climate spanning multiple glacial cycles as a point of comparison. Here we present a high-resolution, multi-proxy (growth dynamics and d13C, d18O, and d234U values) composite stalagmite record of hydroclimate from two caves in western Portugal across the majority of the last two glacial cycles (~220 ka). At orbital and millennial scales, stalagmite-based proxies for hydroclimate proxies covaried with SST, with elevated d13C, d18O, and d234U values and/or growth hiatuses indicating reduced effective moisture coincident with periods of lowered SST during major ice-rafted debris events, in agreement with changes in palynological reconstructions of continental climate. While in many cases the Portuguese stalagmite record can be scaled to SST, in some intervals the magnitudes of stalagmite isotopic shifts, and possibly hydroclimate, appear to have been somewhat decoupled from SST.","author":{"name":"Rhawn F. Denniston, Amanda N. Houts, Yemane Asmerom, Alan D. Wanamaker Jr., Jonathan A. Haws, Victor J. Polyak, Diana L. Thatcher, Setsen Altan-Ochir, Alyssa C. Borowske, Sebastian F.M. Breitenbach, Caroline C. Ummenhofer, Frederico T. Regala, Michael M. Benedetti, and Nuno F. Bicho"},"citation":"Rhawn F. Denniston, Amanda N. Houts, Yemane Asmerom, Alan D. Wanamaker Jr., Jonathan A. Haws, Victor J. Polyak, Diana L. Thatcher, Setsen Altan-Ochir, Alyssa C. Borowske, Sebastian F.M. Breitenbach, Caroline C. Ummenhofer, Frederico T. Regala, Michael M. Benedetti, and Nuno F. Bicho. 2018. A stalagmite test of North Atlantic SST and Iberian hydroclimate linkages over the last two glacial cycles. Climate of the Past, 14(12), 1893-1913. doi: 10.5194/cp-14-1893-2018","edition":null,"identifier":{"id":"10.5194/cp-14-1893-2018","type":"doi","url":"http://dx.doi.org/10.5194/cp-14-1893-2018"},"issue":"12","journal":"Climate of the Past","pages":"1893-1913","pubRank":"1","pubYear":2018,"reportNumber":null,"title":"A stalagmite test of North Atlantic SST and Iberian hydroclimate linkages over the last two glacial cycles","type":"publication","volume":"14"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"57776","geo":{"geoType":"Feature","geometry":{"coordinates":["39.53","-8.78"],"type":"POINT"},"properties":{"easternmostLongitude":"-8.78","maxElevationMeters":"420","minElevationMeters":"420","northernmostLatitude":"39.53","southernmostLatitude":"39.53","westernmostLongitude":"-8.78"}},"locationName":"Continent>Europe>Western Europe>Portugal","mappable":"Y","paleoData":[{"NOAADataTableId":"37693","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>carbon isotopes","earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/portugal/gloriosa2018iso.txt","linkText":"Buraca Gloriosa Stalagmite Stable Isotope Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Gloriosa2018iso","dataTableNotes":null,"earliestYear":222448,"earliestYearBP":222448,"earliestYearCE":-220498,"mostRecentYear":1319,"mostRecentYearBP":1319,"mostRecentYearCE":631,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Buraca Gloriosa"},{"NOAASiteId":"57777","geo":{"geoType":"Feature","geometry":{"coordinates":["39.3","-9.27"],"type":"POINT"},"properties":{"easternmostLongitude":"-9.27","maxElevationMeters":"130","minElevationMeters":"130","northernmostLatitude":"39.3","southernmostLatitude":"39.3","westernmostLongitude":"-9.27"}},"locationName":"Continent>Europe>Western Europe>Portugal","mappable":"Y","paleoData":[{"NOAADataTableId":"37694","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>carbon isotopes","earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/portugal/lebre2018iso.txt","linkText":"Gruta do Casal da Lebre Stalagmite Stable Isotope Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"LebreGCL6iso","dataTableNotes":null,"earliestYear":186962,"earliestYearBP":186962,"earliestYearCE":-185012,"mostRecentYear":161417,"mostRecentYearBP":161417,"mostRecentYearCE":-159467,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Gruta do Casal da Lebre"}],"studyCode":null,"studyName":"Portugal 222,000 Year Speleothem Stable Isotope Data","studyNotes":"Stable isotope (d18O and d13C) data from 5 stalagmites collected in 2 Portuguese caves (Buraca Gloriosa and Gruta do Casal da Lebre), covering the past 222 KYr. Note: An error in the age model for stalagmite BG67 was identified after publication of these data. However, since this error does not shift the time series outside the reported uncertainty window, it does not in any way impact the findings or interpretations presented in the manuscript.","version":"1.0","xmlId":"63874"}