{"NOAAStudyId":"10829","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":"2011-04-15","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-10829.xml","doi":null,"earliestYearBP":36936,"earliestYearCE":-34986,"entryId":"noaa-ocean-10829","funding":[],"investigators":"Bendle, J.A.; Weijers, J.W.H.; Maslin, M.A.; Sinninghe Damsté, J.S.; Schouten, S.; Hopmans, E.C.; Boot, C.S.; Pancost, R.D.","mostRecentYearBP":619,"mostRecentYearCE":1331,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/10829","originalSource":null,"publication":[{"abstract":"The Amazon basin is a major component of the global carbon \nand hydrological cycles, a significant natural source of methane, \nand home to remarkable biodiversity and endemism. Reconstructing \npast climate changes in the Amazon basin is important for a better \nunderstanding of the effect of such changes on these critical \nfunctions of the basin. Using a novel biomarker proxy, based \non the membrane lipids of soil bacteria with a new regional \ncalibration, we present a reconstruction of changes in mean \nannual air temperatures for the Amazon catchment during the \nlast 37 kyr B.P. Biomarkers were extracted from Ocean Drilling \nProgram sediment core ODP942 recovered from the Amazon fan. \nThe Amazon fan is a major depository for terrestrial sediments, \nwith the advantage that the terrestrial material captured \nreflects a regional integration of the whole river catchment. \nThe reconstructed tropical Amazonian temperatures were ~5°C \ncooler at the Last Glacial Maximum (~21°C) compared to modern \nvalues (~26°C). This is in agreement with previous estimates \nof tropical continental temperatures in the tropical Amazon \nbasin and tropical Africa during the Last Glacial Maximum. \nMoreover, we also illustrate how the soil bacterial membrane \nlipid record reveals major changes in basin dynamics and \nsediment provenance during the glacial-Holocene transition, \nimpacting the biomarker reconstructions from ~11 kyr onward. \n","author":null,"citation":"Bendle, J.A., J.W.H. Weijers, M.A. Maslin, J.S. Sinninghe Damsté, \nS. Schouten, E.C. Hopmans, C.S. Boot, and R.D. Pancost. 2010. \nMajor changes in glacial and Holocene terrestrial temperatures \nand sources of organic carbon recorded in the Amazon fan \nby tetraether lipids. \nGeochem. Geophys. Geosyst., 11 , Q12007, doi:10.1029/2010GC003308. \n","edition":null,"identifier":{"id":"10.1029/2010GC003308","type":"doi","url":"http://dx.doi.org/10.1029/2010GC003308"},"issue":null,"journal":"Geochemistry, Geophysics, Geosystems","pages":null,"pubRank":"1","pubYear":2010,"reportNumber":null,"title":"Major changes in glacial and Holocene terrestrial temperatures  and sources of organic carbon recorded in the Amazon fan  by tetraether lipids","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":["Last Glacial Maximum","PAGES LOTRED SA2k","PAGES 2k Network","Air Temperature Reconstruction"],"site":[{"NOAASiteId":"47960","geo":{"geoType":"Feature","geometry":{"coordinates":["5.75","-49.1"],"type":"POINT"},"properties":{"easternmostLongitude":"-49.1","maxElevationMeters":"-3346","minElevationMeters":"-3346","northernmostLatitude":"5.75","southernmostLatitude":"5.75","westernmostLongitude":"-49.1"}},"locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"19547","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>reconstruction","earth science>paleoclimate>paleocean>biomarkers"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bendle2010/bendle2010.txt","linkText":"bendle2010.txt","urlDescription":"Original Data and Full Metadata","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>biomarkers","earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bendle2010/bendle2010.xls","linkText":"bendle2010.xls","urlDescription":"Original Data and Full Metadata","variables":[]}],"dataTableName":"ODP942","dataTableNotes":null,"earliestYear":36936,"earliestYearBP":36936,"earliestYearCE":-34986,"mostRecentYear":619,"mostRecentYearBP":619,"mostRecentYearCE":1331,"species":[],"timeUnit":"cal yr BP"}],"siteName":"ODP 942"}],"studyCode":null,"studyName":"Amazon Fan ODP942 37KYr Tetraether Lipids Data","studyNotes":"GDGT biomarker data from an Amazon Fan sediment core for \nthe past 37,000 years.  Data includes depths and age model \ncalculations for the sediment samples from ODP site 942; \nLC-MS data-file IDs; integrations of peak responses for \nGDGT biomarkers for all m/z; GDGT indices; reconstructed \ntemperatures and pHs; organic matter end-member calculations. \n\n","version":"1.0","xmlId":"9393"}