{"NOAAStudyId":"22438","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":"2017-08-01","dataPublisher":"NOAA","dataType":"PALEOLIMNOLOGY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/lake","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-22438.xml","doi":null,"earliestYearBP":2820000,"earliestYearCE":-2818050,"entryId":"noaa-lake-22438","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"1204087, 1451512"}],"investigators":"Keisling, B.A.; Castañeda, I.S.; Brigham-Grette, J.","mostRecentYearBP":2410770,"mostRecentYearCE":-2408820,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/22438","originalSource":null,"publication":[{"abstract":"The Pliocene epoch represents an analog for future climate, with atmospheric carbon dioxide concentrations and continental configurations similar to present. Although the presence of multiple positive feedbacks in polar regions leads to amplified climatic changes, conditions in the Pliocene terrestrial Arctic are poorly characterized. High latitude sedimentary records indicate that dramatic glacial advance and decay occurred in the Pliocene Arctic, with attendant effects on global sea-level. Understanding these deposits and their implications for Earth's future requires developing a sense of climatic evolution across the Pliocene-Pleistocene transition and during the intensification of Northern Hemisphere Glaciation (iNHG) ~2.7 million yr ago (Ma). Here we reconstruct Arctic terrestrial environmental change from 2.82-2.41 Ma (Marine Isotope Stages (MIS) G10-95) using the distribution of branched glycerol dialkyl glycerol tetraethers (brGDGTs) and the isotopic composition of plant leaf waxes (dDwax) in a sedimentary archive from Lake El'gygytgyn, Northeast Russia. Our records reveal changes in proxy behavior across this interval that we attribute to changing boundary conditions, including sea level, sea ice, vegetation and pCO2 during different MISs. We find that brGDGT temperatures and dDwax are decoupled for most of the record, although both show an increasing range of glacial-interglacial variability following iNHG. dDwax is stable from MIS G10-G4 despite changes in vegetation and temperature, suggesting different sources or pathways for moisture to Lake El'gygytgyn during the Late Pliocene.","author":{"name":"Benjamin A. Keisling, Isla S. Castañeda, Julie Brigham-Grette"},"citation":"Benjamin A. Keisling, Isla S. Castañeda, Julie Brigham-Grette. 2017. Hydrological and temperature change in Arctic Siberia during the intensification of Northern Hemisphere Glaciation. Earth and Planetary Science Letters, 457, 136-148. doi: 10.1016/j.epsl.2016.09.058 ","edition":null,"identifier":{"id":"10.1016/j.epsl.2016.09.058 ","type":"doi","url":"http://dx.doi.org/10.1016/j.epsl.2016.09.058 "},"issue":null,"journal":"Earth and Planetary Science Letters","pages":"136-148","pubRank":"1","pubYear":2017,"reportNumber":null,"title":"Hydrological and temperature change in Arctic Siberia during the intensification of Northern Hemisphere Glaciation","type":"publication","volume":"457"}],"reconstruction":"Y","scienceKeywords":["Air Temperature Reconstruction"],"site":[{"NOAASiteId":"54271","geo":{"geoType":"Feature","geometry":{"coordinates":["67.4997","172.1038"],"type":"POINT"},"properties":{"easternmostLongitude":"172.1038","maxElevationMeters":"492","minElevationMeters":"492","northernmostLatitude":"67.4997","southernmostLatitude":"67.4997","westernmostLongitude":"172.1038"}},"locationName":"Continent>Europe>Eastern 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covers 3.6 Ma to present day","earliestYear":2820000,"earliestYearBP":2820000,"earliestYearCE":-2818050,"mostRecentYear":2410770,"mostRecentYearBP":2410770,"mostRecentYearCE":-2408820,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Lake El'gygytgyn"}],"studyCode":null,"studyName":"Lake El'gygytgyn, NE Russia Pliocene Biogeochemical Data and Temperature Reconstruction","studyNotes":"Biogeochemical data and deuterium isotopes from Pliocene sediments (2.8 - 2.4 ma) collected in Lake El'gygytgyn, NE Russia.  Data include branched GDGT (glycerol dialkyl glycerol tetraether) measurements and indices, n-alkanes, deuterium isotopes, and reconstructed temperature.","version":"1.0","xmlId":"20622"}