{"NOAAStudyId":"14328","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":"2013-05-01","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-14328.xml","doi":null,"earliestYearBP":994991,"earliestYearCE":-993041,"entryId":"noaa-ocean-14328","funding":[],"investigators":"Jaccard, S.L.; Hayes, C.T.; Martínez-Garcia, A.; Hodell, D.A.; Anderson, R.F.; Sigman, D.M.; Haug, G.H.","mostRecentYearBP":1460,"mostRecentYearCE":490,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/14328","originalSource":null,"publication":[{"abstract":"Export of organic carbon from surface waters of the Antarctic Zone of the Southern Ocean decreased during the last ice age, coinciding with declining atmospheric carbon dioxide (CO2) concentrations, signaling reduced exchange of CO2 between the ocean interior and the atmosphere. In contrast, in the Subantarctic Zone, export production increased into ice ages coinciding with rising dust fluxes, thus suggesting iron fertilization of subantarctic phytoplankton. Here, a new high-resolution productivity record from the Antarctic Zone is compiled with parallel subantarctic data over the past million years. Together, they fit the view that the combination of these two modes of Southern Ocean change determines the temporal structure of the glacial-interglacial atmospheric CO2 record, including during the interval of \"lukewarm\" interglacials between 450 and 800 thousand years ago.","author":null,"citation":"Jaccard, S.L., Hayes, C.T., Martinez-Garcia, A., Hodell, D.A., Anderson, R.F., Sigman, D.M., Haug, G.H. 2013. Two modes of change in Southern Ocean ocean productivity over the past million years. Science, 339, 1419-1423. DOI:10.1126/science.1227545","edition":null,"identifier":{"id":"10.1126/science.1227545","type":"doi","url":"http://dx.doi.org/10.1126/science.1227545"},"issue":null,"journal":"Science","pages":null,"pubRank":"1","pubYear":2013,"reportNumber":null,"title":"Two modes of change in Southern Ocean ocean productivity over the past million years","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"19271","geo":{"geoType":"Feature","geometry":{"coordinates":["-53.18035","5.130333"],"type":"POINT"},"properties":{"easternmostLongitude":"5.130333","maxElevationMeters":"-2807","minElevationMeters":"-2807","northernmostLatitude":"-53.18035","southernmostLatitude":"-53.18035","westernmostLongitude":"5.130333"}},"locationName":"Ocean>Atlantic Ocean>South Atlantic Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"24295","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>radiogenic isotope","earth science>paleoclimate>paleocean>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jaccard2013/jaccard2013-230Th-MAR.txt","linkText":"jaccard2013-230Th-MAR.txt","urlDescription":"Original Data and Full Metadata","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"corrected for detrital 230Th; ingrown 230Th and decay of excess 230Th","cvDataType":"PALEOCEANOGRAPHY","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"disintegration per minute per gram","cvWhat":"chemical composition>isotope>single isotope concentration>230Th>230Th excess"},{"cvAdditionalInfo":"mass accumulation rate","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"gram per square centimeter per kiloyear","cvWhat":"chemical composition>compound>inorganic compound>silicon dioxide>biogenic silica"},{"cvAdditionalInfo":"mass accumulation rate","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"gram per square centimeter per kiloyear","cvWhat":"geological material>identified mineral>carbonate>calcium carbonate"},{"cvAdditionalInfo":"biogenic barium; mass accumulation rate","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"milligram per square centimeter per kiloyear","cvWhat":"chemical composition>element or single-element molecule>barium"},{"cvAdditionalInfo":"mass accumulation rate","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"microgram per square centimeter per kiloyear","cvWhat":"chemical composition>element or single-element molecule>chlorine"}]}],"dataTableName":"ODP1094-TN57-13PC-MAR","dataTableNotes":null,"earliestYear":155020,"earliestYearBP":155020,"earliestYearCE":-153070,"mostRecentYear":1460,"mostRecentYearBP":1460,"mostRecentYearCE":490,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"24296","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/jaccard2013/jaccard2013-XRF.txt","linkText":"jaccard2013-XRF.txt","urlDescription":"Original Data and Full Metadata","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>element or compound ratio>calcium/iron"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>element or compound ratio>barium/iron"}]}],"dataTableName":"ODP1094-J13-xrf","dataTableNotes":null,"earliestYear":994991,"earliestYearBP":994991,"earliestYearCE":-993041,"mostRecentYear":11487,"mostRecentYearBP":11487,"mostRecentYearCE":-9537,"species":[],"timeUnit":"cal yr BP"}],"siteName":"ODP1094"}],"studyCode":null,"studyName":"Southern Ocean Productivity Data Over the Past Million Years","studyNotes":"The stratigraphy is based on planktonic foraminifera d18O correlation to the EPICA Dome C ice core age scale assuming an in-phase relationship.","version":"1.0","xmlId":"12309"}