# South Atlantic Bottom Water Temperature, d18O, d13C and Trace Metal Data during the Last Deglaciation #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/26951 # Description: NOAA Landing Page # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/umling2019/umling2019-36ggc-benth.txt # Description: NOAA location of the template # # Data_Type: Paleoceanography # # Dataset_DOI: # # Parameter_Keywords: carbon isotopes, oxygen isotopes, reconstruction, trace metals in carbonate #--------------------------------------- # Contribution_Date # Date: 2019-06-05 #--------------------------------------- # File_Last_Modified_Date # Date: 2019-06-05 #--------------------------------------- # Title # Study_Name: South Atlantic Bottom Water Temperature, d18O, d13C and Trace Metal Data during the Last Deglaciation #--------------------------------------- # Investigators # Investigators: Umling, Natalie E.; Oppo, Delia W. #--------------------------------------- # Description_Notes_and_Keywords # Description: Values that deviated from the mean by greater than 2s, or were an outlier of 3+ replicates were not included in the final trends. #--------------------------------------- # Publication # Authors: Umling, N.E., D.W. Oppo, P. Chen, J. Yu, Z. Liu, M. Yan, G. Gebbie, D.C. Lund, K.R. Pietro, Z.D. Jin, K.-F. Huang, K.B. Costa, F.A.L. Toledo # Published_Date_or_Year: 2019 # Published_Title: Atlantic circulation and ice sheet influences on upper South Atlantic temperatures during the last deglaciation # Journal_Name: Paleoceanography and Paleoclimatology # Volume: 34 # Edition: # Issue: # Pages: # Report_Number: # DOI: 10.1029/2019PA003558 # Online_Resource: # Full_Citation: # Abstract: Atlantic Meridional Overturning Circulation (AMOC) disruption during the last deglaciation is hypothesized to have caused large subsurface ocean temperature anomalies, but records from key regions are not available to test this hypothesis, and other possible drivers of warming have not been fully considered. Here, we present the first reliable evidence for subsurface warming in the South Atlantic during Heinrich Stadial 1 (HS1), confirming the link between large-scale heat redistribution and AMOC. Warming extends across the Bølling-Allerød (BA) despite predicted cooling at this time, thus spanning intervals of both weak and strong AMOC indicating another forcing mechanism that may have been previously overlooked. Transient model simulations and quasi-conservative water-mass tracers suggest that reduced northward upper ocean heat transport was responsible for the early deglacial (HS1) accumulation of heat at our shallower (~1,100 m) site. In contrast, the results suggest that warming at our deeper site (~1,900 m) site was dominated by southward advection of North Atlantic mid-depth heat anomalies. During the BA, the demise of ice sheets resulted in oceanographic changes in the North Atlantic that reduced convective heat loss to the atmosphere, causing subsurface warming that overwhelmed the cooling expected from an AMOC reinvigoration. The data and simulations suggest that rising atmospheric CO2 did not contribute significantly to deglacial subsurface warming at our sites. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: # Grant: #--------------------------------------- # Site_Information # Site_Name: KNR159-5-36GGC # Location: Atlantic Ocean # Country: # Northernmost_Latitude: -27.25 # Southernmost_Latitude: -27.25 # Easternmost_Longitude: -46.47 # Westernmost_Longitude: -46.47 # Elevation: -1268 #--------------------------------------- # Data_Collection # Collection_Name: KNR159-5-36GGC benthic Umling2019 # First_Year: 30032 # Last_Year: 1663 # Time_Unit: cal yr BP # Core_Length: # Notes: #--------------------------------------- # Chronology_Information # Chronology: # # Core depth (cm) 14C age (14C yrs) error (14C yrs) reference # KNR159-5-36GGC 1 1740 30 this study # KNR159-5-36GGC 16 3170 60 this study # KNR159-5-36GGC 28 4480 55 this study # KNR159-5-36GGC 28 4450 40 this study # KNR159-5-36GGC 30.5 4920 15 Sortor and Lund # KNR159-5-36GGC 40 6000 35 this study # KNR159-5-36GGC 40.5 6395 20 Sortor and Lund # KNR159-5-36GGC 40.5 6380 15 Sortor and Lund # KNR159-5-36GGC 50.5 7825 15 Sortor and Lund # KNR159-5-36GGC 56 8510 50 this study # KNR159-5-36GGC 57.5 8445 20 Sortor and Lund # KNR159-5-36GGC 60 9450 50 Came et al., 2003 # KNR159-5-36GGC 60.5 9115 20 Sortor and Lund, 2011 # KNR159-5-36GGC 64 10750 90 Came et al., 2003 # KNR159-5-36GGC 65.5 9425 20 Sortor and Lund, 2011 # KNR159-5-36GGC 67.5 10425 25 Sortor and Lund, 2011 # KNR159-5-36GGC 68 10600 45 Came et al., 2003 # KNR159-5-36GGC 70.5 10705 30 Sortor and Lund, 2011 # KNR159-5-36GGC 72.5 10860 45 Balmer et al., 2016 # KNR159-5-36GGC 75.5 10990 25 Sortor and Lund, 2011 # KNR159-5-36GGC 77.5 10835 35 Balmer et al., 2016 # KNR159-5-36GGC 80 11400 50 Came et al., 2003 # KNR159-5-36GGC 80.5 12260 90 Balmer et al., 2016 # KNR159-5-36GGC 80.5 11485 30 Sortor and Lund, 2011 # KNR159-5-36GGC 82.5 12200 35 Balmer et al., 2016 # KNR159-5-36GGC 85.5 12460 30 Sortor and Lund, 2011 # KNR159-5-36GGC 87.5 12105 40 Balmer et al., 2016 # KNR159-5-36GGC 88 12200 50 Came et al., 2003 # KNR159-5-36GGC 88.5 12770 60 Balmer et al., 2016 # KNR159-5-36GGC 90.5 12705 35 Sortor and Lund, 2011 # KNR159-5-36GGC 92 12450 60 Came et al., 2003 # KNR159-5-36GGC 92.5 12600 80 Balmer et al., 2016 # KNR159-5-36GGC 95.5 12275 30 Sortor and Lund, 2011 # KNR159-5-36GGC 97.5 6925 25 Balmer et al., 2016 # KNR159-5-36GGC 100.5 12710 30 Sortor and Lund, 2011 # KNR159-5-36GGC 102.5 13235 50 Balmer et al., 2016 # KNR159-5-36GGC 104 13550 60 Came et al., 2003 # KNR159-5-36GGC 104.5 13560 60 Balmer et al., 2016 # KNR159-5-36GGC 105.5 13295 35 Sortor and Lund, 2011 # KNR159-5-36GGC 110.5 13465 35 Sortor and Lund, 2011 # KNR159-5-36GGC 112 13650 60 Came et al., 2003 # KNR159-5-36GGC 115.5 13630 30 Sortor and Lund, 2011 # KNR159-5-36GGC 117.5 13945 50 Balmer et al., 2016 # KNR159-5-36GGC 120.5 13350 40 Sortor and Lund, 2011 # KNR159-5-36GGC 122.5 13740 50 Balmer et al., 2016 # KNR159-5-36GGC 123.5 11800 55 Balmer et al., 2016 # KNR159-5-36GGC 125.5 13765 35 Sortor and Lund, 2011 # KNR159-5-36GGC 127.5 11360 45 Balmer et al., 2016 # KNR159-5-36GGC 130.5 13955 35 Sortor and Lund, 2011 # KNR159-5-36GGC 132.5 11905 45 Balmer et al., 2016 # KNR159-5-36GGC 134.5 14340 70 Sortor and Lund, 2011 # KNR159-5-36GGC 140.5 14045 35 Sortor and Lund, 2011 # KNR159-5-36GGC 141 14850 120 Came et al., 2003 # KNR159-5-36GGC 142.5 11975 25 Sortor and Lund, 2011 # KNR159-5-36GGC 144.5 13500 60 Balmer et al., 2016 # KNR159-5-36GGC 146.5 15240 90 Sortor and Lund, 2011 # KNR159-5-36GGC 148 12350 65 Came et al., 2003 # KNR159-5-36GGC 150.5 15500 70 Sortor and Lund, 2011 # KNR159-5-36GGC 155.5 14090 60 Balmer et al., 2016 # KNR159-5-36GGC 157.5 15220 90 Balmer et al., 2016 # KNR159-5-36GGC 160.5 12055 30 Sortor and Lund, 2011 # KNR159-5-36GGC 162.5 15590 110 Balmer et al., 2016 # KNR159-5-36GGC 165.5 16790 120 Balmer et al., 2016 # KNR159-5-36GGC 166.5 16480 140 Balmer et al., 2016 # KNR159-5-36GGC 170.5 14365 35 Sortor and Lund, 2011 # KNR159-5-36GGC 173.5 13450 60 Balmer et al., 2016 # KNR159-5-36GGC 175.5 16530 90 Balmer et al., 2016 # KNR159-5-36GGC 177.5 17520 100 Balmer et al., 2016 # KNR159-5-36GGC 180.5 17510 60 Sortor and Lund, 2011 # KNR159-5-36GGC 182.5 17590 80 Sortor and Lund, 2011 # KNR159-5-36GGC 185.5 18780 70 Sortor and Lund, 2011 # KNR159-5-36GGC 187.5 18930 120 Balmer et al., 2016 # KNR159-5-36GGC 190.5 19340 60 Sortor and Lund, 2011 # KNR159-5-36GGC 195.5 19420 100 Balmer et al., 2016 # KNR159-5-36GGC 200 19300 95 this study # KNR159-5-36GGC 200.5 15525 50 Sortor and Lund, 2011 # KNR159-5-36GGC 272 29700 180 this study # #--------------------------------------- # 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) ## core sample identification,,,,,paleoceanography,,,C,core name ## depth_cm depth,,,centimeter,,paleoceanography,,,N, ## age_yrBP age,,,calendar year before present,,paleoceanography,,,N, ## species notes,,,,,paleoceanography,,,C,species measured ## d13C_benth delta 13C,benthic foraminifer,,per mil PDB,,paleoceanography,,,N,measured on listed species ## d18O_benth delta 18O,benthic foraminifer,,per mil PDB,,paleoceanography,,,N,measured on listed species #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NaN core depth_cm age_yrBP species d13C_benth d18O_benth KNR159-5-36GGC 1 1663 Cibicidoides sp. 1.318 2.586 KNR159-5-36GGC 4 1965 Cibicidoides sp. 1.006 2.486 KNR159-5-36GGC 4 1965 C. wuellerstorf 1.065 2.431 KNR159-5-36GGC 8 2384 Cibicidoides sp. 1.128 2.424 KNR159-5-36GGC 12 2785 Cibicidoides sp. 1.062 2.448 KNR159-5-36GGC 16 3220 Cibicidoides sp. 1.118 2.386 KNR159-5-36GGC 20 3736 Cibicidoides sp. 1.130 2.462 KNR159-5-36GGC 24 4271 Cibicidoides sp. 1.202 2.420 KNR159-5-36GGC 28 4785 Cibicidoides sp. 1.077 2.445 KNR159-5-36GGC 32 5432 Cibicidoides sp. 1.132 2.447 KNR159-5-36GGC 36 6060 Cibicidoides sp. 1.162 2.469 KNR159-5-36GGC 40 6733 Cibicidoides sp. 0.914 2.534 KNR159-5-36GGC 44 7381 Cibicidoides sp. 1.020 2.651 KNR159-5-36GGC 48 7985 Cibicidoides sp. 0.708 2.508 KNR159-5-36GGC 48 7985 Cibicidoides sp. 1.149 2.452 KNR159-5-36GGC 52 8556 Cibicidoides sp. 1.046 2.682 KNR159-5-36GGC 56 9142 Cibicidoides sp. 0.989 2.690 KNR159-5-36GGC 60 9918 Cibicidoides sp. 1.044 2.908 KNR159-5-36GGC 64 10536 Cibicidoides sp. 0.960 2.656 KNR159-5-36GGC 68 11792 Cibicidoides sp. 1.053 2.718 KNR159-5-36GGC 72 12349 C. pachyderma 0.903 3.050 KNR159-5-36GGC 72 12349 Cibicidoides sp. 0.806 3.261 KNR159-5-36GGC 80 13115 Cibicidoides sp. 0.927 2.838 KNR159-5-36GGC 84 13563 Cibicidoides sp. 0.983 2.962 KNR159-5-36GGC 88 13936 Cibicidoides sp. 0.871 3.282 KNR159-5-36GGC 92 14264 C. pachyderma 0.842 3.574 KNR159-5-36GGC 92 14264 C. pachyderma 0.852 3.351 KNR159-5-36GGC 96 14572 C. pachyderma 0.785 3.536 KNR159-5-36GGC 96 14572 Cibicidoides sp. 0.763 3.445 KNR159-5-36GGC 100 14869 C. pachyderma 0.670 3.608 KNR159-5-36GGC 104 15156 C. pachyderma 0.727 3.574 KNR159-5-36GGC 108 15359 C. pachyderma 0.716 3.745 KNR159-5-36GGC 108 15359 C. pachyderma 0.707 3.854 KNR159-5-36GGC 112 15501 C. pachyderma 0.934 3.743 KNR159-5-36GGC 112 15501 C. pachyderma 0.775 3.691 KNR159-5-36GGC 116 15642 C. pachyderma 0.724 3.753 KNR159-5-36GGC 120 15785 C. pachyderma 0.566 3.904 KNR159-5-36GGC 120 15785 C. pachyderma 0.621 3.808 KNR159-5-36GGC 124 15922 C. pachyderma 0.564 3.925 KNR159-5-36GGC 128 16056 C. pachyderma 0.758 3.979 KNR159-5-36GGC 132 16195 C. pachyderma 0.533 3.934 KNR159-5-36GGC 132 16195 C. pachyderma 0.606 3.971 KNR159-5-36GGC 136 16344 C. pachyderma 0.499 4.024 KNR159-5-36GGC 136 16344 C. pachyderma 0.377 3.840 KNR159-5-36GGC 141 16558 C. pachyderma 0.622 3.982 KNR159-5-36GGC 144 16698 C. pachyderma 0.409 4.156 KNR159-5-36GGC 148 16921 C. pachyderma 0.531 4.282 KNR159-5-36GGC 152 17142 C. pachyderma 0.635 4.145 KNR159-5-36GGC 156 17355 C. pachyderma 0.510 4.242 KNR159-5-36GGC 160 17574 C. pachyderma 0.534 4.142 KNR159-5-36GGC 164 17830 C. pachyderma 0.488 4.267 KNR159-5-36GGC 164 17830 C. pachyderma 0.534 4.129 KNR159-5-36GGC 168 18196 C. pachyderma 0.651 4.218 KNR159-5-36GGC 172 18569 C. pachyderma 0.592 4.264 KNR159-5-36GGC 176 18938 C. pachyderma 0.562 4.174 KNR159-5-36GGC 180 19326 C. pachyderma 0.573 4.215 KNR159-5-36GGC 184 19780 C. pachyderma 0.496 3.907 KNR159-5-36GGC 188 20639 C. pachyderma 0.636 4.160 KNR159-5-36GGC 192 21425 C. pachyderma 0.688 4.107 KNR159-5-36GGC 196 21932 C. pachyderma 0.658 4.134 KNR159-5-36GGC 200 22309 C. pachyderma 0.593 4.094 KNR159-5-36GGC 204 22644 C. pachyderma 0.444 3.717 KNR159-5-36GGC 204 22644 C. pachyderma 0.644 3.956 KNR159-5-36GGC 204 22644 C. pachyderma 0.627 3.876 KNR159-5-36GGC 204 22644 C. pachyderma 0.699 3.923 KNR159-5-36GGC 204 22644 C. pachyderma 0.731 4.041 KNR159-5-36GGC 208 23076 C. pachyderma 0.383 4.026 KNR159-5-36GGC 208 23076 C. pachyderma 0.377 3.901 KNR159-5-36GGC 208 23076 C. pachyderma 0.570 3.805 KNR159-5-36GGC 208 23076 C. pachyderma 0.539 4.015 KNR159-5-36GGC 208 23076 C. pachyderma 0.457 4.062 KNR159-5-36GGC 212 23515 C. pachyderma 0.667 3.953 KNR159-5-36GGC 212 23515 C. pachyderma 0.845 3.884 KNR159-5-36GGC 212 23515 C. pachyderma 0.541 3.645 KNR159-5-36GGC 212 23515 C. pachyderma 0.620 3.889 KNR159-5-36GGC 212 23515 C. pachyderma 0.773 3.909 KNR159-5-36GGC 216 23944 C. pachyderma 0.741 3.994 KNR159-5-36GGC 216 23944 C. pachyderma 0.706 3.861 KNR159-5-36GGC 216 23944 C. pachyderma 0.688 3.855 KNR159-5-36GGC 216 23944 Cibicidoides sp. 0.819 3.668 KNR159-5-36GGC 220 24376 C. pachyderma 0.516 4.022 KNR159-5-36GGC 220 24376 C. pachyderma 0.545 3.813 KNR159-5-36GGC 220 24376 C. pachyderma 0.686 3.780 KNR159-5-36GGC 220 24376 C. pachyderma 0.754 3.879 KNR159-5-36GGC 220 24376 C. pachyderma 0.651 3.918 KNR159-5-36GGC 224 24812 C. pachyderma 0.595 3.736 KNR159-5-36GGC 224 24812 C. pachyderma 0.653 3.611 KNR159-5-36GGC 224 24812 C. pachyderma 0.421 3.921 KNR159-5-36GGC 224 24812 C. pachyderma 0.804 3.971 KNR159-5-36GGC 224 24812 C. pachyderma 0.729 3.853 KNR159-5-36GGC 224 24812 C. pachyderma 0.706 3.983 KNR159-5-36GGC 228 25245 C. pachyderma 0.561 3.935 KNR159-5-36GGC 228 25245 C. pachyderma 0.383 3.941 KNR159-5-36GGC 228 25245 C. pachyderma 0.697 3.936 KNR159-5-36GGC 228 25245 C. pachyderma 0.839 4.025 KNR159-5-36GGC 228 25245 C. pachyderma 0.710 3.796 KNR159-5-36GGC 228 25245 Cibicidoides sp. 0.775 3.714 KNR159-5-36GGC 232 25681 C. pachyderma 0.605 3.991 KNR159-5-36GGC 232 25681 C. pachyderma 0.789 4.085 KNR159-5-36GGC 232 25681 C. pachyderma 0.719 3.985 KNR159-5-36GGC 232 25681 C. pachyderma 0.886 3.963 KNR159-5-36GGC 236 26122 C. pachyderma 0.607 3.894 KNR159-5-36GGC 236 26122 C. pachyderma 0.532 3.711 KNR159-5-36GGC 236 26122 C. pachyderma 0.604 3.920 KNR159-5-36GGC 236 26122 C. pachyderma 0.463 3.852 KNR159-5-36GGC 240 26556 C. pachyderma 0.682 3.920 KNR159-5-36GGC 240 26556 C. pachyderma 0.512 3.824 KNR159-5-36GGC 240 26556 C. pachyderma 0.502 3.846 KNR159-5-36GGC 240 26556 C. pachyderma 0.406 3.829 KNR159-5-36GGC 240 26556 C. pachyderma 0.667 4.019 KNR159-5-36GGC 244 26986 C. pachyderma 0.533 4.060 KNR159-5-36GGC 244 26986 C. pachyderma 0.697 3.855 KNR159-5-36GGC 244 26986 C. pachyderma 0.754 4.001 KNR159-5-36GGC 244 26986 C. pachyderma 0.590 3.889 KNR159-5-36GGC 248 27417 C. pachyderma 0.475 3.740 KNR159-5-36GGC 248 27417 C. pachyderma 0.567 3.867 KNR159-5-36GGC 248 27417 C. pachyderma 0.675 3.952 KNR159-5-36GGC 248 27417 C. pachyderma 0.749 3.819 KNR159-5-36GGC 248 27417 C. pachyderma 0.565 3.912 KNR159-5-36GGC 252 27848 C. pachyderma 0.651 3.931 KNR159-5-36GGC 252 27848 C. pachyderma 0.723 3.763 KNR159-5-36GGC 252 27848 C. pachyderma 0.635 3.991 KNR159-5-36GGC 252 27848 C. pachyderma 0.801 3.782 KNR159-5-36GGC 252 27848 C. pachyderma 0.690 3.666 KNR159-5-36GGC 256 28285 C. pachyderma 0.692 3.768 KNR159-5-36GGC 256 28285 C. pachyderma 0.704 3.588 KNR159-5-36GGC 256 28285 C. pachyderma 0.695 3.962 KNR159-5-36GGC 256 28285 C. pachyderma 0.756 3.529 KNR159-5-36GGC 256 28285 C. pachyderma 0.756 3.768 KNR159-5-36GGC 260 28721 C. pachyderma 0.633 3.846 KNR159-5-36GGC 260 28721 C. pachyderma 0.769 4.010 KNR159-5-36GGC 260 28721 C. pachyderma 0.381 3.899 KNR159-5-36GGC 260 28721 C. pachyderma 0.892 3.777 KNR159-5-36GGC 260 28721 C. pachyderma 0.596 3.620 KNR159-5-36GGC 264 29156 C. pachyderma 0.674 3.527 KNR159-5-36GGC 264 29156 C. pachyderma 0.737 3.559 KNR159-5-36GGC 264 29156 C. pachyderma 0.495 3.775 KNR159-5-36GGC 264 29156 C. pachyderma 0.388 3.749 KNR159-5-36GGC 268 29591 C. pachyderma 0.718 3.535 KNR159-5-36GGC 268 29591 C. pachyderma 0.667 3.514 KNR159-5-36GGC 268 29591 C. pachyderma 0.461 3.744 KNR159-5-36GGC 268 29591 C. pachyderma 0.783 3.494 KNR159-5-36GGC 268 29591 C. pachyderma 0.803 3.522 KNR159-5-36GGC 272 30032 C. pachyderma 0.678 3.639 KNR159-5-36GGC 272 30032 C. pachyderma 0.634 3.527 KNR159-5-36GGC 272 30032 C. pachyderma 0.531 3.599