{"NOAAStudyId":"16400","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":"2014-04-23","dataPublisher":"NOAA","dataType":"PALEOCEANOGRAPHY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/paleoceanography","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-ocean-16400.xml","doi":null,"earliestYearBP":1000,"earliestYearCE":950,"entryId":"noaa-ocean-16400","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"OCE-0927247, OCE-07-52649"}],"investigators":"Cléroux, C.; deMenocal, P.B.; Arbuszewski, J.A.; Linsley, B.K.","mostRecentYearBP":0,"mostRecentYearCE":1950,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/16400","originalSource":null,"publication":[{"abstract":"The thermal structure of the upper ocean (0-1000 m) is set by surface heat fluxes, shallow wind-driven circulation, and the deeper thermohaline circulation. Its long-term variability can be reconstructed using deep-dwelling planktonic foraminifera that record subsurface conditions. Here we used six species (Neogloboquadrina dutertrei, Globorotalia tumida, Globorotalia inflata, Globorotalia truncatulinoides, Globorotalia hirsuta, and Globorotalia crassaformis) from 66 core tops along a meridional transect spanning the mid-Atlantic (42°N to 25°S) to develop a method for reconstructing past thermocline conditions. We estimated the calcification depths from d18O measurements and the Mg/Ca-temperature relationships for each species. This systematic strategy over this large latitudinal section reveals distinct populations with different Mg/Ca-temperature relationships for G. inflata, G. truncatulinoides, and G. hirsuta in different areas. The calcification depths do not differ among the different populations, except for G. hirsuta, where the northern population calcifies much shallower than the southern population. N. dutertrei and G. tumida show a remarkably constant calcification depth independent of oceanographic conditions. The deepest dweller, G. crassaformis, apparently calcifies in the oxygen-depleted zone, where it may find refuge from predators and abundant aggregated matter to feed on. We found a good match between its calcification depth and the 3.2 ml/l oxygen level. The results of this multispecies, multiproxy study can now be applied down-core to facilitate the reconstruction of open-ocean thermocline changes in the past.","author":{"name":"Caroline Cléroux, Peter deMenocal, Jennifer Arbuszewski, and Brad Linsley"},"citation":"Caroline Cléroux, Peter deMenocal, Jennifer Arbuszewski, and Brad Linsley. 2013. Reconstructing the upper water column thermal structure in the Atlantic Ocean. 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sp.>Globorotalia truncatulinoides","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]}],"dataTableName":"Cleroux2013trunc","dataTableNotes":null,"earliestYear":1000,"earliestYearBP":1000,"earliestYearCE":950,"mostRecentYear":0,"mostRecentYearBP":0,"mostRecentYearCE":1950,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"26482","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>carbon isotopes","earth science>paleoclimate>paleocean>geochemistry","earth science>paleoclimate>paleocean>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/cleroux2013/cleroux2013tumida.txt","linkText":"G. tumida Trace Element and Stable Isotope Data","urlDescription":"Data File","variables":[{"cvAdditionalInfo":"core name","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Character","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>notes"},{"cvAdditionalInfo":"foraminifera taxon name","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Character","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>notes"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>planktic foraminifer>Globorotalia sp.>Globorotalia tumida","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>element or compound ratio>manganese/calcium"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"degree","cvWhat":"sampling metadata>latitude"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"degree","cvWhat":"sampling metadata>longitude"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"sampling metadata>collection water depth"},{"cvAdditionalInfo":"foraminiferal size fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>notes"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>planktic foraminifer>Globorotalia sp.>Globorotalia tumida","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>element or compound ratio>iron/calcium"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>planktic foraminifer>Globorotalia sp.>Globorotalia tumida","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>element or compound ratio>magnesium/calcium"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>planktic foraminifer>Globorotalia sp.>Globorotalia tumida","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>element or compound ratio>strontium/calcium"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>planktic foraminifer>Globorotalia sp.>Globorotalia tumida","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>planktic foraminifer>Globorotalia sp.>Globorotalia tumida","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]}],"dataTableName":"Cleroux2013tumida","dataTableNotes":null,"earliestYear":1000,"earliestYearBP":1000,"earliestYearCE":950,"mostRecentYear":0,"mostRecentYearBP":0,"mostRecentYearCE":1950,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Mid-Atlantic Meridional Transect"}],"studyCode":null,"studyName":"Atlantic Ocean Core Top Trace Element and Stable Isotope Data","studyNotes":"Trace element ratios (Mg, Sr, Mn, Fe) and stable isotope (d18O, d13C) of 6 planktonic foraminifera species \n(G. dutertrei, G. tumida, G. truncatulinoides, G. inflata, G. crassaformis, G. hirsuta) from 66 coretops in the Atlantic Ocean. \nCoretops are located between 42°N and 25°S. For each coretop sample, 10 to 25 specimens were picked, gently crushed between \ntwo glass plates,mixed, and split into four aliquots: two replicates for trace element analysis (ICP-OES) and two replicates \nfor stable isotope analysis (Optima mass spectrometer).","version":"1.0","xmlId":"14126"}