# Polar Ice Core 28,000 Year Nitrous Oxide 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/28890 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/fischer2019ngrip-n2o.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Ice core # # Dataset DOI: # # Parameter_Keywords: atmospheric gas, nitrogen isotopes, oxygen isotopes #--------------------------------------- # Contribution_Date # Date: 2020-01-24 #--------------------------------------- # File_Last_Modified_Date # Date: 2020-01-24 #--------------------------------------- # Title # Study_Name: Polar Ice Core 28,000 Year Nitrous Oxide Isotope Data #--------------------------------------- # Investigators # Investigators: Fischer, H.; Schmitt, J.; Bock, M.; Seth, B.; Joos, F.; Spahni, R.; Lienert, S.; Battaglia, G.; Stocker, B.D.; Schilt, A.; Brook, E.J. #--------------------------------------- # Description_Notes_and_Keywords # Description: Polar ice core nitrous oxide concentration and isotope (d15N and d18O) data of N2O from the TALDICE, EDML, and NGRIP cores, for the past 28,000 years, plus derived emission fluxes. # Provided Keywords: nitrous oxide, ice core, stable isotopes, reconstruction of emissions #--------------------------------------- # Publication # Authors: Hubertus Fischer, Jochen Schmitt, Michael Bock, Barbara Seth, Fortunat Joos, Renato Spahni,Sebastian Lienert, Gianna Battaglia, Benjamin D. Stocker, Adrian Schilt, and Edward J. Brook # Published_Date_or_Year: 2019-10-15 # Published_Title: N2O changes from the Last Glacial Maximum to the preindustrial – Part 1: Quantitative reconstruction of terrestrial and marine emissions using N2O stable isotopes in ice cores # Journal_Name: Biogeosciences # Volume: 16 # Edition: # Issue: 20 # Pages: 3997-4021 # Report Number: # DOI: 10.5194/bg-16-3997-2019 # Online_Resource: https://doi.org/10.5194/bg-16-3997-2019 # Full_Citation: # Abstract: Using high-precision and centennial-resolution ice core information on atmospheric nitrous oxide concentrations and its stable nitrogen and oxygen isotopic composition, we quantitatively reconstruct changes in the terrestrial and marine N2O emissions over the last 21 000 years. Our reconstruction indicates that N2O emissions from land and ocean increased over the deglaciation largely in parallel by 1.7±0.3 and 0.7±0.3 TgN yr-1, respectively, relative to the Last Glacial Maximum level. However, during the abrupt Northern Hemisphere warmings at the onset of the Bolling-Allerod warming and the end of the Younger Dryas, terrestrial emissions respond more rapidly to the northward shift in the Intertropical Convergence Zone connected to the resumption of the Atlantic Meridional Overturning Circulation. About 90 % of these large step increases were realized within 2 centuries at maximum. In contrast, marine emissions start to slowly increase already many centuries before the rapid warmings, possibly connected to a re-equilibration of subsurface oxygen in response to previous changes. Marine emissions decreased, concomitantly with changes in atmospheric CO2 and d13C(CO2), at the onset of the termination and remained minimal during the early phase of Heinrich Stadial 1. During the early Holocene a slow decline in marine N2O emission of 0.4 TgN yr-1 is reconstructed, which suggests an improvement of subsurface water ventilation in line with slowly increasing Atlantic overturning circulation. In the second half of the Holocene total emissions remain on a relatively constant level, but with significant millennial variability. The latter is still difficult to attribute to marine or terrestrial sources. Our N2O emission records provide important quantitative benchmarks for ocean and terrestrial nitrogen cycle models to study the influence of climate on nitrogen turnover on timescales from several decades to glacial-interglacial changes. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Swiss National Science Foundation # Grant: 200020_172506 and 200020_172476 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: European Research Council Seventh Framework Programme (FP/2007-2013)/ERC Advanced # Grant: Grant Agreement no. 226172 (MATRICs) awarded to HF #------------------ # Site_Information # Site_Name: North GRIP # Location: North America>Greenland # Country: # Northernmost_Latitude: 75.1 # Southernmost_Latitude: 75.1 # Easternmost_Longitude: -42.33 # Westernmost_Longitude: -42.33 # Elevation: 2917 m #------------------ # Data_Collection # Collection_Name: Fischer2019NGRIP # First_Year: 26958 # Last_Year: 294 # Time_Unit: cal yr BP # 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) # ## depth_m depth,ice,,meter,,ice core,,,N,depth mid sample - TALDICE ice core ## age_kyr_BP age,gas,,kyr BP,,ice core,,,N, ## N2O_ppb nitrous oxide,air,,parts per billion,,ice core,,isotope ratio mass spectrometry,N,bulk atmosphere ## N2O_error nitrous oxide,air,one standard deviation,parts per billion,,ice core,,isotope ratio mass spectrometry,N, ## delta_15N_N2O delta 15N,nitrous oxide,,per mil N2,,ice core,,isotope ratio mass spectrometry,N, ## delta_15N_N2O_error delta 15N,nitrous oxide,one standard deviation,per mil N2,,ice core,,isotope ratio mass spectrometry,N, ## delta_18O_N2O delta 18O,nitrous oxide,,per mil VSMOW,,ice core,,isotope ratio mass spectrometry,N, ## delta_18O_N2O_error delta 18O,nitrous oxide,one standard deviation,per mil VSMOW,,ice core,,isotope ratio mass spectrometry,N, ## method_code method,ice,,,,icecore,,,N,method code note # #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: -999 # depth_m age_kyr_BP N2O_ppb N2O_error delta_15N_N2O delta_d15N_error delta_18O_N2O delta18O_error method_code 133.730 0.294 -999.0 -999.0 9.62 0.22 47.29 0.45 2 133.810 0.294 269.4 2.5 9.59 0.30 45.34 0.40 1 188.735 0.588 -999.0 -999.0 9.35 0.22 45.83 0.45 2 188.820 0.588 261.8 2.5 9.45 0.30 45.46 0.40 1 239.880 0.876 -999.0 -999.0 9.08 0.22 44.88 0.45 2 282.780 1.118 -999.0 -999.0 9.48 0.22 45.31 0.45 2 282.940 1.119 -999.0 -999.0 8.95 0.22 45.53 0.45 2 325.140 1.363 -999.0 -999.0 9.63 0.22 45.75 0.45 2 325.230 1.364 258.6 2.5 9.50 0.30 45.27 0.40 1 408.745 1.862 -999.0 -999.0 9.22 0.22 45.19 0.45 2 408.925 1.863 -999.0 -999.0 9.74 0.22 46.18 0.45 2 448.340 2.101 -999.0 -999.0 9.76 0.22 44.60 0.45 2 448.430 2.101 270.3 2.5 9.64 0.30 46.00 0.40 1 528.095 2.607 -999.0 -999.0 9.32 0.22 46.20 0.45 2 528.190 2.607 275.3 2.5 9.10 0.30 45.25 0.40 1 566.590 2.853 -999.0 -999.0 9.46 0.22 45.18 0.45 2 597.100 3.051 269.3 2.5 9.26 0.30 44.79 0.40 1 637.730 3.324 264.0 2.5 9.49 0.30 45.39 0.40 1 709.605 3.808 -999.0 -999.0 9.70 0.22 45.40 0.45 2 709.710 3.809 264.7 2.5 9.26 0.30 44.03 0.40 1 739.310 4.011 -999.0 -999.0 9.70 0.22 45.20 0.45 2 739.500 4.012 -999.0 -999.0 9.42 0.22 45.79 0.45 2 781.190 4.313 266.5 2.5 9.34 0.30 45.01 0.40 1 781.430 4.315 -999.0 -999.0 9.33 0.22 45.10 0.45 2 820.855 4.608 -999.0 -999.0 9.60 0.22 46.09 0.45 2 821.045 4.610 -999.0 -999.0 9.26 0.22 44.93 0.45 2 852.620 4.848 -999.0 -999.0 9.58 0.22 44.94 0.45 2 852.750 4.849 266.6 2.5 9.56 0.30 45.61 0.40 1 889.475 5.124 -999.0 -999.0 9.72 0.22 45.09 0.45 2 914.860 5.319 265.2 2.5 9.46 0.30 45.46 0.40 1 944.590 5.546 260.3 2.5 9.41 0.30 45.05 0.40 1 968.080 5.734 -999.0 -999.0 9.33 0.22 45.14 0.45 2 997.700 5.970 263.5 2.5 9.48 0.30 45.35 0.40 1 998.120 5.973 -999.0 -999.0 9.70 0.22 45.46 0.45 2 1045.240 6.357 261.3 2.5 9.86 0.30 44.46 0.40 1 1084.125 6.679 -999.0 -999.0 9.64 0.22 45.31 0.45 2 1104.490 6.848 -999.0 -999.0 9.86 0.22 45.18 0.45 2 1104.860 6.851 -999.0 -999.0 9.62 0.22 45.14 0.45 2 1127.020 7.042 -999.0 -999.0 9.65 0.22 46.03 0.45 2 1127.090 7.042 256.3 2.5 9.62 0.30 45.29 0.40 1 1191.725 7.605 -999.0 -999.0 9.90 0.22 45.93 0.45 2 1226.575 7.915 -999.0 -999.0 10.03 0.22 44.62 0.45 2 1226.720 7.916 -999.0 -999.0 9.71 0.22 45.10 0.45 2 1243.075 8.071 -999.0 -999.0 9.48 0.22 45.48 0.45 2 1243.430 8.075 262.6 2.5 9.52 0.30 44.46 0.40 1 1298.630 8.656 -999.0 -999.0 9.81 0.22 45.51 0.45 2 1298.710 8.657 258.9 2.5 10.14 0.30 46.12 0.40 1 1320.635 8.898 -999.0 -999.0 9.95 0.22 44.62 0.45 2 1341.535 9.133 -999.0 -999.0 10.00 0.22 45.38 0.45 2 1341.620 9.134 263.3 2.5 9.88 0.30 45.34 0.40 1 1361.335 9.373 -999.0 -999.0 10.00 0.22 45.95 0.45 2 1401.750 9.881 269.8 2.5 9.75 0.30 45.27 0.40 1 1406.075 9.938 -999.0 -999.0 10.33 0.22 45.03 0.45 2 1437.350 10.374 -999.0 -999.0 10.22 0.22 45.73 0.45 2 1460.445 10.725 -999.0 -999.0 10.51 0.22 45.78 0.45 2 1460.650 10.729 271.2 2.5 10.35 0.30 45.67 0.40 1 1484.175 11.117 -999.0 -999.0 10.48 0.22 45.79 0.45 2 1530.430 12.130 -999.0 -999.0 10.06 0.22 45.38 0.45 2 1559.575 13.078 -999.0 -999.0 10.74 0.22 47.01 0.45 2 1561.500 13.128 271.8 3.3 10.98 0.30 46.72 0.40 1 1582.400 13.621 264.7 3.3 10.66 0.30 46.76 0.40 1 1586.800 13.717 266.7 3.3 10.59 0.30 46.64 0.40 1 1587.495 13.732 -999.0 -999.0 10.61 0.22 46.59 0.45 2 1592.010 13.843 256.1 3.3 10.68 0.30 46.34 0.40 1 1596.960 13.971 248.8 3.3 10.66 0.30 46.89 0.40 1 1602.460 14.087 265.3 3.3 10.06 0.30 45.88 0.40 1 1607.700 14.185 265.1 3.3 8.56 0.30 47.47 0.40 1 1657.770 15.794 207.4 3.3 9.58 0.30 46.17 0.40 1 1658.010 15.805 208.8 3.3 9.69 0.30 46.14 0.40 1 1666.000 16.170 204.6 3.3 9.61 0.30 45.93 0.40 1 1674.250 16.548 203.5 3.3 9.40 0.30 46.35 0.40 1 1678.875 16.767 -999.0 -999.0 9.07 0.22 48.28 0.45 2 1682.500 16.930 195.6 3.3 10.61 0.30 45.05 0.40 1 1682.740 16.941 200.5 3.3 10.58 0.30 47.61 0.40 1 1696.250 17.583 214.6 3.3 10.17 0.30 46.33 0.40 1 1713.300 18.388 211.6 3.3 10.47 0.30 46.28 0.40 1 1713.540 18.399 211.3 3.3 9.88 0.30 47.35 0.40 1 1744.050 19.820 212.9 3.3 10.34 0.30 46.05 0.40 1 1795.850 22.511 215.1 3.3 10.55 0.30 45.06 0.40 1 1804.050 22.860 214.7 3.3 10.21 0.30 46.02 0.40 1 1805.150 22.912 218.5 3.3 10.44 0.30 45.88 0.40 1 1807.350 23.001 215.7 3.3 10.25 0.30 45.69 0.40 1 1808.650 23.047 220.9 3.3 9.47 0.30 45.49 0.40 1 1811.910 23.203 199.0 3.3 10.23 0.30 46.19 0.40 1 1812.850 23.229 207.7 3.3 10.38 0.30 45.25 0.40 1 1814.500 23.283 212.6 3.3 8.31 0.30 45.93 0.40 1 1821.910 23.559 182.4 3.3 9.81 0.30 45.40 0.40 1 1824.400 23.657 196.4 3.3 9.14 0.30 44.91 0.40 1 1826.110 23.764 201.6 3.3 10.36 0.30 45.47 0.40 1 1832.310 24.189 210.7 3.3 9.76 0.30 45.18 0.40 1 1838.375 24.588 -999.0 -999.0 10.00 0.22 45.21 0.45 2 1843.100 24.931 200.0 3.3 8.92 0.30 45.14 0.40 1 1845.850 25.134 190.2 3.3 9.59 0.30 45.93 0.40 1 1866.750 26.510 211.6 3.3 10.05 0.30 45.84 0.40 1 1871.700 26.674 214.7 3.3 10.08 0.30 45.82 0.40 1 1876.100 26.958 222.6 3.3 10.40 0.30 46.30 0.40 1