{"NOAAStudyId":"2643","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":"2005-07-01","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-2643.xml","doi":null,"earliestYearBP":1502895,"earliestYearCE":-1500945,"entryId":"noaa-ocean-2643","funding":[],"investigators":"McClymont, E.L.; Rosell-Melé, A.","mostRecentYearBP":500000,"mostRecentYearCE":-498050,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2643","originalSource":null,"publication":[{"abstract":"Sea-surface temperatures (SSTs) reconstructed from Ocean Drilling Program Sites 806 and 849 in the western and eastern equatorial Pacific provide a history of the strength of the Walker circulation between 1.5 and 0.5 Ma. A progressive cooling in the eastern equatorial Pacific is paralleled by intensification of the equatorial zonal SST gradient that began 1.17 Ma, prior to the expansion of global ice volume associated with the mid-Pleistocene climate transition. The SSTs in the eastern equatorial Pacific and the zonal gradient reached modern values by 0.9 Ma. We propose that this onset and intensification of the modern Walker circulation reduced heat flux, but increased moisture transport to high latitudes, leading to the development of more extensive ice sheets and the shift toward the 100 ka world.","author":null,"citation":"McClymont, E.L. and A. Rosell-Melé. 2005. Links between the onset of modern Walker circulation and the mid-Pleistocene climate transition. Geology, 33( 5), 389-392.","edition":null,"identifier":null,"issue":null,"journal":"Geology","pages":null,"pubRank":"1","pubYear":2005,"reportNumber":null,"title":"Links between the onset of modern Walker circulation and the mid-Pleistocene climate transition","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":["Sea Surface Temperature Reconstruction"],"site":[{"NOAASiteId":"19119","geo":{"geoType":"Feature","geometry":{"coordinates":[".32","159.35"],"type":"POINT"},"properties":{"easternmostLongitude":"159.35","maxElevationMeters":"-2520","minElevationMeters":"-2520","northernmostLatitude":"0.32","southernmostLatitude":"0.32","westernmostLongitude":"159.35"}},"locationName":"Ocean>Pacific Ocean>North Pacific Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"4368","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>biomarkers","earth science>paleoclimate>paleocean>reconstruction","earth science>paleoclimate>paleocean>age control"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mcclymont2005","linkText":"mcclymont2005","urlDescription":"Original Data and Full Metadata","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>biomarkers","earth science>paleoclimate>paleocean>reconstruction","earth science>paleoclimate>paleocean>age control"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp806b2-tab.txt","linkText":"odp806b2-tab.txt","urlDescription":"Alternate Format Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>organic compound index>alkenone unsaturation index","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"degree Celsius","cvWhat":"earth system variable>temperature variable>temperature>sea water temperature>sea surface temperature"},{"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":"dimensionless","cvWhat":"chemical composition>compound>organic compound>organic compound index>alkenone unsaturation index>alkenone unsaturation index Uk37 prime"}]}],"dataTableName":"ODP806B2","dataTableNotes":"805C samples were used to bridge a coring gap. UK37' and SST values are shown only for those samples where the C37:3 alkenone could be detected.","earliestYear":1500000,"earliestYearBP":1500000,"earliestYearCE":-1498050,"mostRecentYear":500000,"mostRecentYearBP":500000,"mostRecentYearCE":-498050,"species":[],"timeUnit":"14C yr BP"}],"siteName":"ODP 806B"},{"NOAASiteId":"19281","geo":{"geoType":"Feature","geometry":{"coordinates":[".18","-110.52"],"type":"POINT"},"properties":{"easternmostLongitude":"-110.52","maxElevationMeters":"-3839","minElevationMeters":"-3839","northernmostLatitude":"0.18","southernmostLatitude":"0.18","westernmostLongitude":"-110.52"}},"locationName":"Ocean>Pacific Ocean>North Pacific Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"4367","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>biomarkers","earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/mcclymont2005","linkText":"mcclymont2005","urlDescription":"Original Data and Full Metadata","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>biomarkers","earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp849cd-tab.txt","linkText":"odp849cd-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":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>organic compound index>alkenone unsaturation index","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"degree Celsius","cvWhat":"earth system variable>temperature variable>temperature>sea water temperature>sea surface temperature"},{"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":"dimensionless","cvWhat":"chemical composition>compound>organic compound>organic compound index>alkenone unsaturation index>alkenone unsaturation index Uk37 prime"}]}],"dataTableName":"ODP849CD","dataTableNotes":"Study uses data from cores ODP849C & D.","earliestYear":1502895,"earliestYearBP":1502895,"earliestYearCE":-1500945,"mostRecentYear":500095,"mostRecentYearBP":500095,"mostRecentYearCE":-498145,"species":[],"timeUnit":"14C yr BP"}],"siteName":"2006-014"}],"studyCode":null,"studyName":"Equatorial Pacific ODP 806 mid-Pleistocene Uk37 Data and SST Reconstruction","studyNotes":"","version":"1.0","xmlId":"1713"}