{"NOAAStudyId":"26370","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":"2019-03-26","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-26370.xml","doi":null,"earliestYearBP":32256,"earliestYearCE":-30306,"entryId":"noaa-lake-26370","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"1203549"},{"fundingAgency":"David and Lucile Packard Foundation","fundingGrant":null}],"investigators":"Feakins, S.J.; Wu, M.S.; Ponton, C.; Tierney, J.E.","mostRecentYearBP":8788,"mostRecentYearCE":-6838,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/26370","originalSource":null,"publication":[{"abstract":"Reconstructions of past hydroclimate provide a means to understand precipitation responses to global ocean-atmosphere climate dynamics beyond the scope of that in the instrumental record. Late glacial climate was characterized by abrupt variability in ice and ocean dynamics, however the implications for hydroclimate are not as well known. Here we present organic geochemical proxy evidence for precipitation isotopes based on plant leaf wax hydrogen isotopic compositions (dDwax) and temperature proxy evidence based upon the branched glycerol dialkyl glycerol tetraethers (brGDGTs), that derive from the membrane lipids of bacteria, each extracted from a sedimentary archive in Lake Elsinore, California spanning 32-9 ka. We add proxy evidence for vegetation and salinity from additional biomarker analyses and compare to prior pollen and sedimentological evidence from the same core. Our record indicates a strong deglacial warming of 10C in Lake Elsinore (beginning at 14.5 ka) that accompanied a D-enrichment of precipitation of +90permil and more C4 vegetation (12-10 ka), after a cold, wet and C3-dominated phase (20-14.5 ka), indicating winter-dominated precipitation during the Last Glacial Maximum and Heinrich Stadial 1. During the late glacial (32-20 ka) we find abrupt variability, with precipitation isotopic shifts (~70 permil) that are independent of temperature swings implicating changes in storm track, rather than local temperature as drivers of the precipitation isotope signal. Temperature is however not irrelevant for hydroclimate: we find extreme warmth at 29.4 ka and 26.8 ka, the latter coincident with existing reports of an extended dry period (27.5-25.5 ka), suggesting a long hot and dry interlude during the generally cooler glacial period. We compare dDwax with speleothem d18O from Nevada, also within the winter-dominated precipitation region. Our results corroborate the Last Glacial Maximum and deglacial signals, and fill gaps revealing storm-track instability from 32-20 ka, however the pacing and magnitude of the biomarker signals merit cautious interpretation.","author":{"name":"Sarah J. Feakins, Mong Sin Wu, Camilo Ponton, Jessica E. Tierney"},"citation":"Sarah J. Feakins, Mong Sin Wu, Camilo Ponton, Jessica E. Tierney. 2019. Biomarkers reveal abrupt switches in hydroclimate during the last glacial in southern California. Earth and Planetary Science Letters, 515, 164-172. doi: 10.1016/j.epsl.2019.03.024","edition":null,"identifier":{"id":"10.1016/j.epsl.2019.03.024","type":"doi","url":"http://dx.doi.org/10.1016/j.epsl.2019.03.024"},"issue":null,"journal":"Earth and Planetary Science Letters","pages":"164-172","pubRank":"1","pubYear":2019,"reportNumber":null,"title":"Biomarkers reveal abrupt switches in hydroclimate during the last glacial in southern California","type":"publication","volume":"515"}],"reconstruction":"Y","scienceKeywords":null,"site":[{"NOAASiteId":"52405","geo":{"geoType":"Feature","geometry":{"coordinates":["33.6733","-117.3542"],"type":"POINT"},"properties":{"easternmostLongitude":"-117.3542","maxElevationMeters":"379","minElevationMeters":"379","northernmostLatitude":"33.6733","southernmostLatitude":"33.6733","westernmostLongitude":"-117.3542"}},"locationName":"Continent>North America>United States Of America>California","mappable":"Y","paleoData":[{"NOAADataTableId":"38813","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>carbon isotopes","earth science>paleoclimate>paleolimnology>geochemistry","earth science>paleoclimate>paleolimnology>hydrogen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/california/elsinore2019biomarker.txt","linkText":"Lake Elsinore Biomarker and Isotope Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Elsinore2019LEDC10-1","dataTableNotes":null,"earliestYear":32256,"earliestYearBP":32256,"earliestYearCE":-30306,"mostRecentYear":8788,"mostRecentYearBP":8788,"mostRecentYearCE":-6838,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Lake Elsinore"}],"studyCode":null,"studyName":"Lake Elsinore, California Late Glacial Biomarker and Isotope Data","studyNotes":"Biomarker (plant wax carbon and hydrogen isotopes and GDGTs) data and temperature reconstruction from sediments collected in Lake Elsinore, California, for 32-9 ka BP.","version":"1.0","xmlId":"65434"}