{"NOAAStudyId":"5590","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":"2007-03-01","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-5590.xml","doi":null,"earliestYearBP":12030,"earliestYearCE":-10080,"entryId":"noaa-ocean-5590","funding":[],"investigators":"Solignac, S.; Giraudeau, J.; de Vernal, A.","mostRecentYearBP":3681,"mostRecentYearCE":-1731,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/5590","originalSource":null,"publication":[{"abstract":"Holocene records of sea surface conditions in the western Nordic seas were obtained from quantitative reconstructions based on dinoflagellate cyst assemblages. Two sediment cores from the east Greenland and the north Iceland shelves provide a detailed account of the long- and short-term dynamics of the opposing flows of Arctic versus Atlantic waters. Both marker species and quantitative reconstructions depict an overall trend toward warmer winter temperatures, saltier surface waters, and decreased sea ice extent. The latter is supported by a close relationship between relative abundances of an Atlantic dinocyst species, Nematosphaeropsis labyrinthus, and ice-rafted debris (IRD) records. We propose that the late Holocene increased IRD delivery in the Denmark Strait region was primarily induced by a combination of less extensive sea ice cover under increased Atlantic water inflow and sustained iceberg calving tied to the readvance of the Greenland ice sheet. Our records thus suggest diminishing polar water supplies throughout the Holocene, although the timing of regime changes differs between the western and eastern sides of the Denmark Strait. Finally, comparison of our records with a core from southern Greenland points to very heterogeneous sea surface conditions in the western North Atlantic, which could be explained by the decoupled dynamics of the two Irminger Current branches. Similarities between the southern Greenland marine record and a continental record nearby suggest a close coupling with atmospheric processes, reminiscent of a North Atlantic Oscillationŋlike climate pattern.","author":null,"citation":"Solignac, S., J. Giraudeau, and A. de Vernal. 2006. Holocene sea surface conditions in the western North Atlantic: Spatial and temporal heterogeneities. Palaeoceanography, 21: 1-16.","edition":null,"identifier":null,"issue":null,"journal":"Paleoceanography","pages":null,"pubRank":"1","pubYear":2006,"reportNumber":null,"title":"Holocene sea surface conditions in the western North Atlantic: Spatial and temporal heterogeneities","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":["Sea Ice Reconstruction"],"site":[{"NOAASiteId":"19302","geo":{"geoType":"Feature","geometry":{"coordinates":["66.63","-23.85"],"type":"POINT"},"properties":{"easternmostLongitude":"-23.85","maxElevationMeters":"-365","minElevationMeters":"-365","northernmostLatitude":"66.63","southernmostLatitude":"66.63","westernmostLongitude":"-23.85"}},"locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"7968","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>reconstruction","earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>population abundance"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/solignac2006","linkText":"solignac2006","urlDescription":"Original Data and Full Metadata","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>reconstruction","earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>population abundance"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/m992269s-tab.txt","linkText":"m992269s-tab.txt","urlDescription":"Alternate Format Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>biological assemblage>dinoflagellate assemblage","cvMethod":null,"cvSeasonality":"1-month period>Feb","cvShortName":null,"cvUnit":"practical salinity unit","cvWhat":"chemical composition>solution property>salinity"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>sea water>sea surface","cvMethod":null,"cvSeasonality":"1-month period>Feb","cvShortName":null,"cvUnit":"practical salinity unit","cvWhat":"chemical composition>solution property>salinity"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>biological assemblage>dinoflagellate assemblage","cvMethod":null,"cvSeasonality":"1-month period>Feb","cvShortName":null,"cvUnit":"degree Celsius","cvWhat":"earth system variable>temperature variable>temperature>sea water temperature>sea surface temperature"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>biological assemblage>dinoflagellate assemblage","cvMethod":null,"cvSeasonality":"1-month period>Aug","cvShortName":null,"cvUnit":"practical salinity unit","cvWhat":"chemical composition>solution property>salinity"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>sea water>sea surface","cvMethod":null,"cvSeasonality":"1-month period>Aug","cvShortName":null,"cvUnit":"practical salinity unit","cvWhat":"chemical composition>solution property>salinity"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>biological assemblage>dinoflagellate assemblage","cvMethod":null,"cvSeasonality":"1-month period>Aug","cvShortName":null,"cvUnit":"degree Celsius","cvWhat":"earth system variable>temperature variable>temperature>sea water temperature>sea surface temperature"},{"cvAdditionalInfo":"month per year","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>biological assemblage>dinoflagellate assemblage","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"month","cvWhat":"earth system variable>cryospheric variable>cryospheric quantity>sea ice cover"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"radiocarbon year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count per cubic centimeter","cvWhat":"biological material>organism>dinoflagellate>dinoflagellate index>total dinocysts"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count per gram","cvWhat":"biological material>organism>dinoflagellate>dinoflagellate index>total dinocysts"}]}],"dataTableName":"M992269S","dataTableNotes":"Note that Stoner et al '07 uses the latest and best age/depth model for this core. ","earliestYear":10280,"earliestYearBP":12030,"earliestYearCE":-10080,"mostRecentYear":3391,"mostRecentYearBP":3681,"mostRecentYearCE":-1731,"species":[],"timeUnit":"14C yr BP"}],"siteName":"MD99-2269"}],"studyCode":null,"studyName":"North Iceland Shelf (MD99-2269) Holocene Dinoflagellate Assemblage Data","studyNotes":null,"version":"1.0","xmlId":"1841"}