# Greenland Lake Transect Modern Carbon and Hydrogen Isotope Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/27790 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/greenland/mcfarlin2019d13calk.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleolimnology # # Dataset DOI: # # Parameter_Keywords: carbon isotopes, hydrogen isotopes #--------------------------------------- # Contribution_Date # Date: 2019-10-23 #--------------------------------------- # File_Last_Modified_Date # Date: 2019-10-23 #--------------------------------------- # Title # Study_Name: Greenland Lake Transect Modern Carbon and Hydrogen Isotope Data #--------------------------------------- # Investigators # Investigators: McFarlin, J.M.; Axford, Y.; Masterson, A.L.; Osburn, M.R. #--------------------------------------- # Description_Notes_and_Keywords # Description: Modern d2H (per mil VSMOW) and d13C (per mil VPDB) values of n-alkanes and n-alkanoic acids in lakes sediments from Greenland along latitudinal transect. #--------------------------------------- # Publication # Authors: Jamie M. McFarlin, Yarrow Axford, Andrew L. Masterson, Magdalena R. Osburn # Published_Date_or_Year: 2019-12-01 # Published_Title: Calibration of modern sedimentary d2H plant wax-water relationships in Greenland lakes # Journal_Name: Quaternary Science Reviews # Volume: 225 # Edition: 105978 # Issue: # Pages: # Report Number: # DOI: 10.1016/j.quascirev.2019.105978 # Online_Resource: https://www.sciencedirect.com/science/article/pii/S0277379119306614 # Full_Citation: # Abstract: Sedimentary plant wax distributions and isotopic compositions are powerful, widely applied paleoenvironmental proxies. However, there is conflicting evidence on the behavior of these proxies at high-latitude sites, where extreme climate and light conditions may uniquely influence plant physiology and growth. Here, we present modern sedimentary n-alkane and n-alkanoic acid abundances and compound-specific (d2H and d13C) isotope values from a 22-lake transect extending from northwest to southernmost Greenland, covering a large latitudinal and climatic gradient. Sedimentary plant waxes are similar in abundance and carbon isotopic composition across the transect, suggesting no major differences in biologic sources. There are strong correlations (r = 0.8-0.9) between d2H values of many long-chain sedimentary waxes and those of modelled precipitation, with n-alkanes more tightly correlated to precipitation than n-alkanoic acids. Data presented here also demonstrate that d2H values of mid-chain sedimentary waxes do not strongly correlate to the d2H values of lake water when it decouples isotopically from precipitation (i.e. in glacier-fed and evaporatively-enriched lakes). This calls into question the common interpretation that mid-chain sedimentary waxes can be ascribed to aquatic plants. We contextualize our Greenland data with an updated global dataset of d2H values of modern sedimentary waxes and precipitation. This update adds 100 + lakes from recently published literature to the seminal review presented by Sachse et al. (2012). This large new compilation suggests a global average apparent fractionation including Arctic data between n-C28 alkanoic acids and annual precipitation (EC28/ANN) of -99permil, and between n-C29 alkanes and annual precipitation (EC29/ANN) of -121permil. The latter value is remarkably consistent with the value first reported by Sachse et al. (2012). #--------------------------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: 1634118, 1454734, 969415 #--------------------------------------- # Site Information # Site_Name: Greenland Lake Transect # Location: North America>Greenland # Country: Greenland # Northernmost_Latitude: 76.85 # Southernmost_Latitude: 60.38 # Easternmost_Longitude: -44.3 # Westernmost_Longitude: -68.66 # Elevation: #--------------------------------------- # Data_Collection # Collection_Name: McFarlin2019d13Calk # First_Year: 2010 # Last_Year: 2015 # Time_Unit: AD # Core_Length: # Notes: #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## Lake sample identification,,,,,,,,C, ## C21 delta 13C,C21 n-alkane,,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C21error delta 13C,C21 n-alkane,one standard deviation,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C23 delta 13C,C23 n-alkane,,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C23error delta 13C,C23 n-alkane,one standard deviation,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C25 delta 13C,C25 n-alkane,,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C25error delta 13C,C25 n-alkane,one standard deviation,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C27 delta 13C,C27 n-alkane,,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C27error delta 13C,C27 n-alkane,one standard deviation,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C29 delta 13C,C29 n-alkane,,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C29error delta 13C,C29 n-alkane,one standard deviation,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C31 delta 13C,C31 n-alkane,,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C31error delta 13C,C31 n-alkane,one standard deviation,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C33 delta 13C,C33 n-alkane,,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, ## C33error delta 13C,C33 n-alkane,one standard deviation,per mil PDB,,paleolimnology,,isotope ratio mass spectrometry,N, #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: Lake C21 C21error C23 C23error C25 C25error C27 C27error C29 C29error C31 C31error C33 C33error STR -31.1408 0.864438792 -29.8468 0.304355 -31.58 0.34020959 -30.5335 0.331209 -30.6124 0.576411 -34.08 0.851271 -39.1824 0.301142 WLL -29.0001 0.259041284 -29.0557 0.235618 -30.665 0.2374617 -30.7956 0.235379 -30.7899 0.243691 -33.0803 0.405659 NS1 -37.3926 0.235672651 -33.4913 0.237253 -34.375 0.27209699 -33.421 0.238639 -34.1785 0.2510151 -34.5287 0.360646 -35.9001 0.235029 SEC -34.9581 0.268078727 -34.5922 0.235 -34.588 0.2442891 -35.0451 0.235299 -34.0784 0.2374617 -34.2504 0.245975 -35.929 0.235168 USHL SHL -33.5364 0.237253287 -33.052 0.251805 -33.084 0.24004015 -33.0797 0.235338 -32.8784 0.2350012 -32.0748 0.235673 -32.0412 0.240662 RTL1 -31.1626 0.36954126 -27.744 0.771608 -30.572 0.48306171 -30.4905 0.453735 -31.4009 0.415055 -32.8674 0.463593 -34.3945 0.348436 RTL2 -24.0673 1.543000378 -23.1842 1.725431 -28.613 1.1733622 -27.3834 1.079539 -28.6948 0.3922242 -32.3293 0.796065 -34.7979 2.681812 RTL3 -19.3285 0.240347 -22.243 0.24115158 -24.617 0.548172 -28.7789 0.3848018 -31.4672 0.46103 -35.5258 0.286479 RTL4 -31.5374 0.249988242 -30.0161 0.26562 -33.801 0.27247145 -33.2024 0.297015 -33.9201 0.247792 -33.8519 0.307739 RTL5 -31.3692 0.254562569 -29.7005 0.235001 -29.083 0.23779132 -34.9193 0.235379 -34.4228 0.2355152 -33.9405 0.238511 -35.7549 0.253996 LSL -30.6085 0.430965583 -26.6093 0.507629 -27.474 1.34159702 -27.8408 0.628308 -31.5201 0.4371682 -33.9814 0.518787 -39.4023 0.985088 LHN T1 -34.1041 0.272847414 -30.9655 0.251277 -31.727 0.3096616 -30.7191 0.454033 -30.3469 0.2492385 -30.7584 0.278265 -31.9526 0.279864 T2 T3 PLK -35.8215 0.243690995 -32.7081 0.239742 -33.25 0.38715433 -32.0428 0.237356 -31.668 0.4178335 -31.3959 0.299756 -33.5227 0.235915 PIN -45.3909 0.239890123 -35.9132 0.250756 -36.988 0.24098628 -33.1379 0.235299 -30.6625 0.2352291 -30.4187 0.23627 -30.7453 0.235379 SCP -33.4834 0.307260475 -31.2507 0.244289 -32.373 0.24755786 -31.4242 0.240192 -30.0266 0.2350947 -29.97 0.251015 -30.3673 0.236121 NAR -39.8857 0.246319723 -32.0137 0.393154 -32.527 0.86996107 -31.2963 0.235048 -30.3099 0.3423665 -30.0704 0.403222 -31.6989 0.441625 LNR -32.6672 0.320385087 -29.988 0.311217 -31.084 0.27774914 -31.2279 0.248284 -30.739 0.2483031 -31.1665 0.257608 -32.3248 0.592261 TUP -36.0118 0.54817153 -32.8527 0.247326 -34.494 0.24273617 -32.6562 0.236958 -32.5067 0.2438883 -32.5057 0.237679 -34.1717 0.235467