# Taylor Glacier, Antarctica 46,000 Year CO2, N2O, and d13CO2 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/24170 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/taylor/taylor2018d13co2.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Ice Cores # # Dataset DOI: # # Parameter_Keywords: atmospheric gas, carbon isotopes #-------------------- # Contribution_Date # Date: 2015-07-11 #-------------------- # File_Last_Modified_Date # Date: 2015-07-11 #-------------------- # Title # Study_Name: Taylor Glacier, Antarctica 46,000 Year CO2, N2O, and d13CO2 Data #-------------------- # Investigators # Investigators: Bauska, T.K.; Brook, E.J.; Marcott, S.A.; Baggenstos, D.; Shackleton, S.; Severinghaus, J.P.; Petrenko, V.V. #-------------------- # Description_Notes_and_Keywords # Description: Greenhouse gas (CO2, N2O) and carbon isotope (d13CO2) data from the Taylor Glacier ice core for 46,000 - 11,000 years before present. # Provided Keywords: carbon cycle, greenhouse gases, deglaciation #-------------------- # Publication # Authors: T.K. Bauska, E.J. Brook, S.A. Marcott, D. Baggenstos, S. Shackleton, J.P. Severinghaus, V.V. Petrenko # Published_Date_or_Year: 2018-07-11 # Published_Title: Controls on millennial-scale atmospheric CO2 variability during the last glacial period # Journal_Name: Geophysical Research Letters # Volume: Accepted # Edition: # Issue: # Pages: # Report_Number: # DOI: 10.1029/2018GL077881 # Online_Resource: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018GL077881 # Full_Citation: # Abstract: Changes in atmospheric CO2 on millennial-to-centennial timescales are key components of past climate variability during the last glacial and deglacial periods (70-10ka) yet the sources and mechanisms responsible for the CO2 fluctuations remain largely obscure. Here we report the 13C/12C ratio of atmospheric CO2 during a key interval of the last glacial period at sub-millennial resolution, with coeval histories of atmospheric CO2, CH4 and N2O concentrations. The carbon isotope data suggest that the millennial-scale CO2 variability in MIS3 is driven largely by changes in the organic carbon cycle, most likely by sequestration of respired carbon in the deep ocean. Centennial-scale CO2 variations, distinguished by carbon isotope signatures, are associated with both abrupt hydrological change in the tropics (e.g. Heinrich Events) and rapid increases in northern hemisphere temperature (DO events). These events can be linked to modes of variability during the last deglaciation, thus suggesting that drivers of millennial and centennial CO2 variability during both periods are intimately linked to abrupt climate variability. #------------------ # Publication # Authors: Thomas K. Bauska, Daniel Baggenstos, Edward J. Brook, Alan C. Mix, Shaun A. Marcott, Vasilii V. Petrenko, Hinrich Schaefer, Jeffrey P. Severinghaus, and James E. Lee # Published_Date_or_Year: 2016-03-29 # Published_Title: Carbon isotopes characterize rapid changes in atmospheric carbon dioxide during the last deglaciation # Journal_Name: Proceedings of the National Academy of Sciences # Volume: 113 # Edition: # Issue: 13 # Pages: 3465-3470 # Report_Number: # DOI: 10.1073/pnas.1513868113 # Online_Resource: http://www.pnas.org/content/113/13/3465 # Full_Citation: # Abstract: An understanding of the mechanisms that control CO2 change during glacial-interglacial cycles remains elusive. Here we help to constrain changing sources with a high-precision, high-resolution deglacial record of the stable isotopic composition of carbon in CO2 (d13C-CO2) in air extracted from ice samples from Taylor Glacier, Antarctica. During the initial rise in atmospheric CO2 from 17.6 to 15.5 ka, these data demarcate a decrease in d13C-CO2, likely due to a weakened oceanic biological pump. From 15.5 to 11.5 ka, the continued atmospheric CO2 rise of 40 ppm is associated with small changes in d13C-CO2, consistent with a nearly equal contribution from a further weakening of the biological pump and rising ocean temperature. These two trends, related to marine sources, are punctuated at 16.3 and 12.9 ka with abrupt, century-scale perturbations in d13C-CO2 that suggest rapid oxidation of organic land carbon or enhanced air-sea gas exchange in the Southern Ocean. Additional century-scale increases in atmospheric CO2 coincident with increases in atmospheric CH4 and Northern Hemisphere temperature at the onset of the Bolling (14.6-14.3 ka) and Holocene (11.6-11.4 ka) intervals are associated with small changes in d13C-CO2, suggesting a combination of sources that included rising surface ocean temperature. #------------------ # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: ANT 0838936 #------------------ # Site_Information # Site_Name: Taylor Glacier # Location: Antarctica # Country: # Northernmost_Latitude: -77.75 # Southernmost_Latitude: -77.75 # Easternmost_Longitude: 161.75 # Westernmost_Longitude: 161.75 # Elevation: #------------------ # Data_Collection # Collection_Name: Taylor2018d13CO2 # Earliest_Year: 46441 # Most_Recent_Year: 10919 # Time_Unit: Cal. Year BP # Core_Length: # Notes: #------------------ # Chronology_Information # Chronology: Baggenstos, D., Bauska, T.K., Severinghaus, J.P., Lee, J.E., Schaefer, H., Buizert, C., Brook, E.J., Shackleton, S., and Petrenko, V.V. 2017. # Atmospheric gas records from Taylor Glacier, Antarctica, reveal ancient ice with ages spanning the entire last glacial cycle. # Clim. Past, 13, 943-958, https://doi.org/10.5194/cp-13-943-2017 # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: one per line, shortname-tab-variable components (what, material, error, units, seasonality, data type,detail, method, C or N for Character or Numeric data, free text) # ## trans_loc Transect location, , , m, , , , ,N, ## age_BP age, , , calendar years before present, , , , ,N, Baggenstos et al. 2017 ## CO2 carbon dioxide, ice, , parts per million, ,ice cores,,gas chromatography ,N, ## N2O nitrous oxide, ice, , parts per billion, ,ice cores,,gas chromatography ,N, ## d13CO2 delta 13C, carbon dioxide, , per mil VPDB, ,ice cores,,isotope ratio mass spectrometry,N, ## campaign Field campaign,,,,,,,,C, ## notes notes,,,,,,,,C,Notes including potential outliers # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: NaN # trans_loc age_BP CO2 N2O d13CO2 campaign notes -210 46441 211.3 238.0 -6.586 TG Primary Transect 2014-2015 -209 46178 211.4 247.0 -6.562 TG Primary Transect 2014-2015 -208 45908 212.2 249.4 -6.553 TG Primary Transect 2014-2015 -207 45633 211.2 252.9 -6.573 TG Primary Transect 2014-2015 -206 45354 210.9 247.1 -6.565 TG Primary Transect 2014-2015 -205 45071 210.1 242.5 -6.600 TG Primary Transect 2014-2015 -204 44791 208.3 238.8 -6.650 TG Primary Transect 2014-2015 -204 44791 208.3 239.2 -6.591 TG Primary Transect 2014-2015 -203 44514 203.5 224.6 -6.595 TG Primary Transect 2014-2015 -202 44241 201.7 229.8 -6.507 TG Primary Transect 2014-2015 -201 43965 198.2 221.2 -6.548 TG Primary Transect 2014-2015 -200 43690 197.2 223.2 -6.358 TG Primary Transect 2014-2015 *d13C-CO2 data potential outlier -199 43409 200.5 234.8 -6.523 TG Primary Transect 2014-2015 -198 43092 197.1 240.0 -6.331 TG Primary Transect 2014-2015 -198 43092 200.0 236.8 -6.454 TG Primary Transect 2014-2015 -197 42727 198.3 230.6 -6.508 TG Primary Transect 2014-2015 -196 42311 197.5 222.8 -6.547 TG Primary Transect 2014-2015 -195 41877 194.8 213.2 -6.492 TG Primary Transect 2014-2015 -194 41415 196.5 215.1 -6.461 TG Primary Transect 2014-2015 -193.5 41157 196.6 227.8 NaN TG Primary Transect 2014-2015 -193.5 41157 196.5 229.7 -6.400 TG Primary Transect 2014-2015 -193 40898 195.8 225.1 -6.442 TG Primary Transect 2014-2015 -192.5 40668 193.2 219.3 -6.429 TG Primary Transect 2014-2015 -192 40438 193.9 215.4 -6.468 TG Primary Transect 2014-2015 -191.5 40240 192.9 215.3 -6.446 TG Primary Transect 2014-2015 -191 40041 194.0 217.7 -6.487 TG Primary Transect 2014-2015 -190.5 39893 196.8 222.6 -6.471 TG Primary Transect 2014-2015 -190 39745 197.2 215.4 -6.541 TG Primary Transect 2014-2015 -189.5 39627 204.3 218.3 -6.664 TG Primary Transect 2014-2015 -189.5 39627 204.7 218.2 -6.638 TG Primary Transect 2014-2015 -189 39508 205.4 220.4 -6.585 TG Primary Transect 2014-2015 -188.5 39401 205.1 217.1 -6.579 TG Primary Transect 2014-2015 -188.5 39401 205.8 216.2 -6.544 TG Primary Transect 2014-2015 -188 39293 205.0 217.7 -6.549 TG Primary Transect 2014-2015 -187 39093 206.5 211.4 -6.616 TG Primary Transect 2014-2015 -186.5 38994 207.7 218.8 -6.582 TG Primary Transect 2014-2015 -185.5 38795 208.0 214.2 -6.669 TG Primary Transect 2014-2015 -185 38696 207.3 218.0 -6.635 TG Primary Transect 2014-2015 -184.5 38593 207.4 219.5 -6.660 TG Primary Transect 2014-2015 -184 38490 206.5 212.5 -6.563 TG Primary Transect 2014-2015 -183.5 38383 208.9 224.5 -6.592 TG Primary Transect 2014-2015 -183 38275 211.2 232.8 -6.630 TG Primary Transect 2014-2015 -182.5 38154 213.7 239.5 -6.555 TG Primary Transect 2014-2015 -181.5 37904 213.2 251.1 -6.640 TG Primary Transect 2014-2015 -181 37774 210.6 245.4 -6.598 TG Primary Transect 2014-2015 -180 37502 209.6 253.6 -6.483 TG Primary Transect 2014-2015 -179 37225 208.7 247.2 -6.374 TG Primary Transect 2014-2015 *d13C-CO2 data potential outlier -178 36937 203.6 239.3 -6.472 TG Primary Transect 2014-2015 -177 36638 202.9 232.7 -6.461 TG Primary Transect 2014-2015 -175 36070 200.8 219.7 -6.428 TG Primary Transect 2014-2015 -173 35508 203.2 224.8 -6.414 TG Primary Transect 2014-2015 -171 34953 201.1 237.8 -6.500 TG Primary Transect 2014-2015 -170 34688 200.6 235.0 -6.570 TG Primary Transect 2014-2015 -130 22330 193.7 225.0 -6.404 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -128 21797 191.8 220.6 -6.462 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -126 20622 194.4 221.7 -6.501 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -124 19522 197.5 213.5 -6.554 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -122 18508 194.5 212.0 -6.527 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -120 17766 195.4 224.6 -6.489 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -119 17447 196.0 224.7 -6.443 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -118 17142 202.5 219.4 -6.525 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -117 17074 202.3 203.8 -6.475 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -116 17001 204.6 205.3 -6.499 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -115 16913 210.6 208.6 -6.571 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -114 16655 212.9 201.0 -6.634 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -112 16380 217.4 205.9 -6.630 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -111 16277 219.9 203.8 -6.800 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -110 16176 223.8 NaN -6.842 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -108 16046 226.5 200.3 -6.800 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -106 15844 225.4 200.7 -6.721 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -104 15633 227.0 202.3 -6.712 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -102 15493 229.3 206.6 -6.760 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -100 15345 230.1 205.7 -6.748 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -98 15187 231.5 212.5 -6.718 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -96 15016 232.7 215.6 -6.700 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -95 14908 232.0 213.0 -6.756 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -93 14664 235.4 219.9 -6.763 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -91 14592 237.0 226.1 -6.753 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 30 14520 238.9 228.9 -6.747 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -89 14473 241.4 240.3 -6.719 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 33 14430 242.7 247.7 -6.690 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -88 14425 243.0 241.6 -6.754 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -86 14369 244.1 248.4 -6.680 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 36 14296 245.0 257.2 -6.674 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -84 14294 244.6 250.9 -6.714 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -82 13992 244.2 255.1 -6.717 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 40 13991 242.6 255.6 NaN TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS -80 13940 242.8 254.4 -6.675 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 42 13914 240.4 255.0 -6.658 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 44 13859 243.8 258.0 -6.607 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 46 13788 243.7 255.2 -6.682 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 50 13519 243.0 258.0 -6.649 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 53 13418 243.4 266.0 -6.622 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 56 13285 245.8 265.1 -6.694 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 63 13015 240.2 260.9 -6.644 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 66 12937 242.3 261.3 -6.627 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 70 12786 242.5 263.6 -6.621 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 71 12751 242.4 262.4 -6.615 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 73 12718 245.0 259.7 -6.645 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 74 12697 246.5 259.7 -6.698 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 76 12637 246.9 256.5 -6.737 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 78 12580 248.3 249.7 -6.780 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 83 12244 250.2 236.5 -6.728 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 86 12093 254.2 241.1 -6.693 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 90 11946 257.2 242.1 -6.642 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 92 11866 257.1 240.7 -6.624 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 94 11776 258.8 247.3 -6.658 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 96 11695 260.2 241.0 -6.664 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 97 11627 262.7 248.8 -6.574 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 98 11551 NaN NaN -6.619 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 99 11493 267.6 248.8 -6.679 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 100 11450 269.1 256.5 -6.666 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 105 11241 270.4 263.5 -6.653 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS 115 10919 271.0 261.0 -6.672 TG Primary Transcect 2010 cite: Bauska et al., 2016 PNAS