noaa-lake-22438 Lake El'gygytgyn, NE Russia Pliocene Biogeochemical Data and Temperature Reconstruction Keisling, B.A.; Castañeda, I.S.; Brigham-Grette, J. Lake El'gygytgyn, NE Russia Pliocene Biogeochemical Data and Temperature Reconstruction 2017-08-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/22438 Investigator B.A. Keisling Investigator I.S. Castañeda Investigator J. Brigham-Grette earth science paleoclimate paleolimnology branched glycerol dialkyl glycerol tetraether,null,null,percent,null,paleolimnology,null,null,N,Hopmans et al. 2000; Schouten et al. 2007; brGDGT IIIc; 1046 fract earth science paleoclimate paleolimnology branched and isoprenoid tetraether index,null,null,dimensionless,null,paleolimnology,null,null,N,Weijers et al. 2007 earth science paleoclimate paleolimnology methylation index of branched tetraethers,null,null,dimensionless,null,paleolimnology,null,null,N,duplicate measurements; Weijers et al. 2007 earth science paleoclimate paleolimnology methylation index of branched tetraethers,null,null,dimensionless,null,paleolimnology,null,null,N,alternative analytical method UHPLC; Hopmans et al. 2016 earth science paleoclimate climate reconstructions|paleolimnology air temperature,glycerol dialkyl glycerol tetraether index,null,degree Celsius,null,climate reconstructions|paleolimnology,null,null,N,presumed summer; MAAT=3.949-5.593*CBT+38.213*MBT Sun et al. 2011 earth science paleoclimate climate reconstructions|paleolimnology air temperature,glycerol dialkyl glycerol tetraether index,null,degree Celsius,annual,climate reconstructions|paleolimnology,null,null,N,alternative analytical method UHPLC; Sun et al. 2011 earth science paleoclimate paleolimnology branched glycerol dialkyl glycerol tetraether,null,null,percent,null,paleolimnology,null,null,N,Hopmans et al. 2000; Schouten et al. 2007; brGDGT III; 1050 fract earth science paleoclimate paleolimnology branched glycerol dialkyl glycerol tetraether,null,null,percent,null,paleolimnology,null,null,N,Hopmans et al. 2000; Schouten et al. 2007; brGDGT IIIb; 1048 fract earth science paleoclimate paleolimnology branched glycerol dialkyl glycerol tetraether,null,null,percent,null,paleolimnology,null,null,N,Hopmans et al. 2000; Schouten et al. 2007; brGDGT IIc; 1032 fract earth science paleoclimate paleolimnology methylation index of branched tetraethers,null,null,dimensionless,null,paleolimnology,null,null,N,Weijers et al. 2007 earth science paleoclimate paleolimnology branched and isoprenoid tetraether index,null,null,dimensionless,null,paleolimnology,null,null,N,duplicate measurements; Weijers et al. 2007 earth science paleoclimate paleolimnology C29 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology C33 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate climate reconstructions|paleolimnology age,null,null,calendar kiloyear before present,null,climate reconstructions|paleolimnology,null,null,N,null earth science paleoclimate paleolimnology branched glycerol dialkyl glycerol tetraether,null,null,percent,null,paleolimnology,null,null,N,Hopmans et al. 2000; Schouten et al. 2007; brGDGT II; 1036 fract earth science paleoclimate paleolimnology branched glycerol dialkyl glycerol tetraether,null,null,percent,null,paleolimnology,null,null,N,Hopmans et al. 2000; Schouten et al. 2007; brGDGT Ic; 1018 fract earth science paleoclimate paleolimnology cyclization index of branched tetraethers,null,null,dimensionless,null,paleolimnology,null,null,N,Weijers et al. 2007 earth science paleoclimate paleolimnology C25 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology C30 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology C31 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology average chain length,n-alkane,null,count,null,paleolimnology,null,null,N,n-alkane average chain length; Poynter and Eglinton 1990 earth science paleoclimate paleolimnology branched and isoprenoid tetraether index,null,null,dimensionless,null,paleolimnology,null,null,N,alternative analytical method UHPLC; Hopmans et al. 2016 earth science paleoclimate paleolimnology delta 2H,C29 n-alkane,one standard deviation,per mil VSMOW,null,paleolimnology,null,null,N,calculation of final dD and propagation of error follows Polissar & D'Andrea 2014 earth science paleoclimate climate reconstructions|paleolimnology air temperature,glycerol dialkyl glycerol tetraether index,null,degree Celsius,annual,climate reconstructions|paleolimnology,null,null,N,original MAAT; Sun et al. 2011 earth science paleoclimate climate reconstructions|paleolimnology depth,null,null,meter,null,climate reconstructions|paleolimnology,null,null,N,composite depth earth science paleoclimate paleolimnology C22 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology C26 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology delta 2H,C29 n-alkane,null,per mil VSMOW,null,paleolimnology,null,null,N,calculation of final dD and propagation of error follows Polissar & D'Andrea 2014 earth science paleoclimate paleolimnology branched glycerol dialkyl glycerol tetraether,null,null,percent,null,paleolimnology,null,null,N,Hopmans et al. 2000; Schouten et al. 2007; brGDGT IIb; 1034 fract earth science paleoclimate paleolimnology C24 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology C28 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology number of samples,null,null,count,null,paleolimnology,null,null,N,number of times each sample was run for dD earth science paleoclimate paleolimnology branched glycerol dialkyl glycerol tetraether,null,null,percent,null,paleolimnology,null,null,N,Hopmans et al. 2000; Schouten et al. 2007; brGDGT I; 1022 fract earth science paleoclimate paleolimnology branched glycerol dialkyl glycerol tetraether,null,null,percent,null,paleolimnology,null,null,N,Hopmans et al. 2000; Schouten et al. 2007; brGDGT Ib; 1020 fract earth science paleoclimate paleolimnology cyclization index of branched tetraethers,null,null,dimensionless,null,paleolimnology,null,null,N,duplicate measurements; Weijers et al. 2007 earth science paleoclimate paleolimnology cyclization index of branched tetraethers,null,null,dimensionless,null,paleolimnology,null,null,N,alternative analytical method UHPLC; Hopmans et al. 2016 earth science paleoclimate paleolimnology C21 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology C23 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology C27 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology C32 n-alkane,null,null,percent,null,paleolimnology,null,null,N,Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology n-alkane,null,null,microgram per gram,null,paleolimnology,null,null,N,total concentration; Eglinton and Hamilton 1967 earth science paleoclimate paleolimnology reconstruction earth science paleoclimate paleolimnology geochemistry earth science paleoclimate paleolimnology hydrogen isotopes geoscientificInformation Air Temperature Reconstruction 2820000 cal yr BP 2410770 cal yr BP Complete 67.4997 67.4997 172.1038 172.1038 492 492 Continent Europe Eastern Europe Russia Lake El'gygytgyn>LATITUDE 67.4997>LONGITUDE 172.1038 None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Benjamin A. Keisling, Isla S. Castañeda, Julie Brigham-Grette 2017 Earth and Planetary Science Letters 457 136-148 10.1016/j.epsl.2016.09.058 http://www.sciencedirect.com/science/article/pii/S0012821X16305490

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. STUDY NOTES: 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.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/russia/elgygytgyn2017.txt Formatted Text Data File; Lake El'gygytgyn Biogeochemical Data and Temperature Reconstruction USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11