{"NOAAStudyId":"10430","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":"2010-05-03","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-10430.xml","doi":null,"earliestYearBP":762750,"earliestYearCE":-760800,"entryId":"noaa-ocean-10430","funding":[{"fundingAgency":"Netherlands Organization  for Scientific Research (NWO)","fundingGrant":"853.00.032, 834.04.003"}],"investigators":"Ziegler, M.; Lourens, L.J.; Tuenter, E.; Reichart, G.J.","mostRecentYearBP":8250,"mostRecentYearCE":-6300,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/10430","originalSource":null,"publication":[{"abstract":"Marine isotope stage (MIS) 13 (~500 000 years ago) has been recognized \nas atypical in many paleoclimate records and, in particular, it has \nbeen connected to an exceptionally strong summer monsoon throughout \nthe Northern Hemisphere. Here, we present a multi-proxy study of a \nsediment core taken from the Murray Ridge at an intermediate water \ndepth in the northern Arabian Sea that covers the last 750 000 years. \nOur results indicate that primary productivity conditions were \nanomalously high during MIS 13 in the Arabian Sea and led to extreme \ncarbonate dissolution and glauconitization in the deep-sea sediments. \nThese observations could be explained by increased wind driven upwelling \nof nutrient-rich deep waters and, hence, by the occurrence of an \nexceptionally strong summer monsoon event during MIS 13, as it was \nsuggested in earlier studies. However, ice core records from Antarctica \ndemonstrate that atmospheric methane concentrations, which are linked to \nthe extent of tropical wetlands, were relatively low during this period. \nThis constitutes a strong argument against an extremely enhanced global \nmonsoon circulation during MIS 13 which, moreover, is in contrast with \nresults of transient climate modelling experiments. As an alternative \nsolution for the aberrant conditions in the Arabian Sea record, \nwe propose that the high primary productivity was probably related to \nthe onset of an intensive meridional overturning circulation in the \nAtlantic Ocean at the end of the Mid-Pleistocene transition. \nThis may have led to an increased supply of nutrient-rich deep waters \ninto the Indian Ocean euphotic zone, thereby triggering the observed \nproductivity maximum. \n","author":null,"citation":"Ziegler, M., L.J. Lourens, E. Tuenter, and G.-J. Reichart. 2010. \nHigh Arabian Sea productivity conditions during MIS 13 - odd monsoon \nevent or intensified overturning circulation at the end of the \nMid-Pleistocene transition? \nClim. Past, 6, 63-76, doi:10.5194/cp-6-63-2010. \n","edition":null,"identifier":{"id":"10.5194/cp-6-63-2010","type":"doi","url":"http://dx.doi.org/10.5194/cp-6-63-2010"},"issue":null,"journal":"Climate of the Past","pages":null,"pubRank":"1","pubYear":2010,"reportNumber":null,"title":"High Arabian Sea productivity conditions during MIS 13 - odd monsoon  event or intensified overturning circulation at the end of the  Mid-Pleistocene transition?","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":["Monsoon"],"site":[{"NOAASiteId":"37039","geo":{"geoType":"Feature","geometry":{"coordinates":["22.2014","63.0847"],"type":"POINT"},"properties":{"easternmostLongitude":"63.0847","maxElevationMeters":"-2387","minElevationMeters":"-2387","northernmostLatitude":"22.2014","southernmostLatitude":"22.2014","westernmostLongitude":"63.0847"}},"locationName":"Ocean>Indian Ocean>Arabian Sea","mappable":"Y","paleoData":[{"NOAADataTableId":"19228","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>geochemistry","earth science>paleoclimate>paleocean>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ziegler2010/ziegler2010.txt","linkText":"ziegler2010.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":"centimeter","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":"biological material>organism>foraminifer>benthic foraminifer>calcareous benthic foraminifer>Uvigerina sp.>Uvigerina peregrina","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":"biological material>organism>foraminifer>planktic foraminifer>Neogloboquadrina sp.>Neogloboquadrina dutertrei","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":"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":"150-600 um fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count per gram","cvWhat":"biological material>organism>foraminifer>identified foraminifer>Globorotalia truncatulinoides"},{"cvAdditionalInfo":"150-600 um fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count per gram","cvWhat":"biological material>organism>foraminifer>identified foraminifer>Globorotalia crassaformis"},{"cvAdditionalInfo":"green grains most commonly glauconite","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count per gram","cvWhat":"geological material>identified mineral>silicate mineral>mica group>glauconite"},{"cvAdditionalInfo":"size normalized","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"microgram","cvWhat":"biological material>organism>foraminifer>identified foraminifer>Globigerinoides ruber"},{"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>titanium/aluminum"},{"cvAdditionalInfo":"x10-6 units","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"cubic meter per kilogram","cvWhat":"magnetic property>magnetic moments>magnetic susceptibility"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":"x-ray fluorescence spectroscopy","cvSeasonality":null,"cvShortName":null,"cvUnit":"count per second","cvWhat":"chemical composition>element or single-element molecule>barium"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":"x-ray fluorescence spectroscopy","cvSeasonality":null,"cvShortName":null,"cvUnit":"count per second","cvWhat":"chemical composition>element or single-element molecule>bromine"}]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>oxygen isotopes","earth science>paleoclimate>paleocean>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ziegler2010/ziegler2010.xls","linkText":"ziegler2010.xls","urlDescription":"Original Data and Full Metadata","variables":[]}],"dataTableName":"MD04-2881","dataTableNotes":null,"earliestYear":762750,"earliestYearBP":762750,"earliestYearCE":-760800,"mostRecentYear":8250,"mostRecentYearBP":8250,"mostRecentYearCE":-6300,"species":[],"timeUnit":"cal yr BP"}],"siteName":"MD04-2881"}],"studyCode":null,"studyName":"Arabian Sea MD04-2881 750KYr Paleoproductivity Data","studyNotes":"Multiproxy geochemical record of Arabian Sea primary productivity \nfrom Murray Ridge core MD04-2881.  \n\nAge estimates are based on tuning the benthic oxygen isotope \nrecord to the global LR04 isotope stack\n\n","version":"1.0","xmlId":"9094"}