{"NOAAStudyId":"2621","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":"2002-07-01","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-2621.xml","doi":null,"earliestYearBP":711600,"earliestYearCE":-709650,"entryId":"noaa-ocean-2621","funding":[],"investigators":"Bird, M.I.; Cali, J.A.","mostRecentYearBP":1014,"mostRecentYearCE":936,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2621","originalSource":null,"publication":[{"abstract":"We present a high-resolution oxygen-isotope chronology to Stage 13 for core ODP-668B, Sierra Leone Rise, east equatorial Atlantic. Observed variations in the abundance of oxidation resistant elemental carbon (OREC) in this core are reinterpreted in the light of this revised chronology, which differs significantly from that proposed by Bird and Cali [Nature 394 (1998) 767].  Peaks in OREC abundance are considered to be related to periods of intense biomass burning in adjacent areas of sub-Saharan Africa during periods of rapid climate change. OREC peaks do not occur during peak glacial times possibly due to low fuel loads and generally cool/dry climate. The most recent OREC peak in the current interglacial period is not unique, as a peak of similar intensity occurs at the peak of the Stage 7 interglacial. Therefore, an anthropogenic origin for the most recent peak cannot be unequivocally established.","author":null,"citation":"Bird, M.I. and J.A. Cali.  2002. A revised high-resolution oxygen-isotope chronology for ODP-668B: implications for Quaternary biomass burning in Africa. Global and Planetary Change 33, 73-76.","edition":null,"identifier":null,"issue":null,"journal":"Global and Planetary Change","pages":null,"pubRank":"1","pubYear":2002,"reportNumber":null,"title":"A revised high-resolution oxygen-isotope chronology for ODP-668B: implications for Quaternary biomass burning in Africa","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"19249","geo":{"geoType":"Feature","geometry":{"coordinates":["4.77","-20.93"],"type":"POINT"},"properties":{"easternmostLongitude":"-20.93","maxElevationMeters":"-2693","minElevationMeters":"-2693","northernmostLatitude":"4.77","southernmostLatitude":"4.77","westernmostLongitude":"-20.93"}},"locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"4310","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>oxygen isotopes","earth science>paleoclimate>paleocean>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bird2002","linkText":"bird2002","urlDescription":"Original Data and Full Metadata","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>oxygen isotopes","earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp668b-tab.txt","linkText":"odp668b-tab.txt","urlDescription":"Alternate Format Data","variables":[{"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":"biological material>organism>foraminifer>planktic foraminifer>Globigerinoides sp.>Globigerinoides ruber","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>Globigerinoides sp.>Globigerinoides ruber","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"}]}],"dataTableName":"ODP668B","dataTableNotes":"Notes contain core, section and section depth","earliestYear":711600,"earliestYearBP":711600,"earliestYearCE":-709650,"mostRecentYear":1100,"mostRecentYearBP":1014,"mostRecentYearCE":936,"species":[],"timeUnit":"14C yr BP"}],"siteName":"ODP668B"}],"studyCode":null,"studyName":"Eastern Equatorial Atlantic Quaternary Stable Isotope Data ","studyNotes":null,"version":"1.0","xmlId":"1692"}