# 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-coretop.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: N.E. Umling, 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: Atlantic, Eastern Tropical Pacific Coretop Set # Location: Global Ocean # Country: # Northernmost_Latitude: 43.3666666666667 # Southernmost_Latitude: -31.516667 # Easternmost_Longitude: -28.2333333333333 # Westernmost_Longitude: -87.75 # Elevation: #--------------------------------------- # Data_Collection # Collection_Name: Coretop H.elegans Umling2019 # First_Year: # Last_Year: # Time_Unit: # 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) ## Core_name sample identification,,,,,paleoceanography,,,C,core name ## waterdepth collection water depth,,,,,paleoceanography,,,N,core water depth (m) ## Latitude latitude,,,degree North,,paleoceanography,,,N, ## Longitude longitude,,,degree East,,paleoceanography,,,N, ## Recorded bottom water temperature at core site sea water temperature,,,degree Celsius,,instrumental,,,N,Recorded bottom water temperature at core site ## Recorded salinity at core site salinity,,,practical salinity unit,,instrumental,,,N,Recorded salinity at core site ## Source_bottom notes,,,,,paleoceanography,,,C,Source of bottom water data used in fields 5 and 6. ## Depth_range notes,,,,,paleoceanography,,,C,Depth range of sample in core (cm) ## Benth_species notes,,,,,paleoceanography,,,C,Benthic foraminifera species ## shells# number of samples,,,,,paleoceanography,,,N,Number of benthic foraminifera shells used ## Mass_sample notes,,,,,paleoceanography,,,N,Mass of benthic foraminifera sample in ug. ## Mid-point of sample depth (cm) depth,,,centimeter,,paleoceanography,,,N,Mid-point of sample depth (cm) ## Li/Ca lithium/calcium,,,micromole per mole,,paleoceanography,,,N,measured on listed species ## Mg/Ca magnesium/calcium,,,millimole per mole,,paleoceanography,,,N,measured on listed species ## Mg/Li magnesium/lithium,,,mole per millimole,,paleoceanography,,,N,measured on listed species ## Al/Ca aluminum/calcium,,,micromole per mole,,paleoceanography,,,N,measured on listed species ## Mn/Ca manganese/calcium,,,micromole per mole,,paleoceanography,,,N,measured on listed species ## Fe/Ca iron/calcium,,,micromole per mole,,paleoceanography,,,N,measured on listed species ## Source_coretop notes,,,,,paleoceanography,,,C,Source of core top data ## Notes notes,,,,,paleoceanography,,,C, #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: Core_name waterdepth Latitude Longitude Recorded bottom water temperature at core site Recorded salinity at core site Source_bottom Depth_range Benth_species shells# Mass_sample Mid-point of sample depth (cm) Li/Ca Mg/Ca Mg/Li Al/Ca Mn/Ca Fe/Ca Source_coretop Notes KNR159-5-130MC 1796 -27.774 -46.429 3.7469 34.8566 KNR159 CTD03 (-29.535,-43.5833) 0-1 H. elegans 16 321 0.5 2.982 0.717 0.240 13.20 0.56 0.782 This study KNR159-5-130MC 1796 -27.774 -46.429 3.7469 34.8566 KNR159 CTD03 (-29.535,-43.5833) 0-1 H. elegans 16 330 0.5 2.830 0.655 0.231 5.81 0.78 4.381 This study KNR159-5-130MC 1796 -27.774 -46.429 3.7469 34.8566 KNR159 CTD03 (-29.535,-43.5833) 0-1 H. elegans 16 340 0.5 2.868 0.679 0.237 19.44 0.80 7.809 This study KNR159-5-66MC 2505 -27.963 -45.947 3.3136 34.9412 KNR159 CTD03 (-29.535,-43.5833) 0-1 H. elegans 9 409 0.5 3.057 0.700 0.229 4.57 0.55 1.306 This study KNR159-5-66MC 2505 -27.963 -45.947 3.3136 34.9412 KNR159 CTD03 (-29.535,-43.5833) 0-1 H. elegans 9 432 0.5 2.577 0.569 0.221 8.68 0.92 7.602 This study KNR159-5-66MC 2505 -27.963 -45.947 3.3136 34.9412 KNR159 CTD03 (-29.535,-43.5833) 0-1 H. elegans 9 564 0.5 2.844 0.645 0.227 1.95 0.81 7.636 This study OCE205-53BC 1038 26.193 -77.708 5.5 35.04 OC205-89 (Rosenthal et al., 1999) 0-1 H. elegans 10 398 0.5 4.468 1.134 0.254 2.74 0.72 -2.575 This study OCE205-53BC 1038 26.193 -77.708 5.5 35.04 OC205-89 (Rosenthal et al., 1999) 0-1 H. elegans 10 382 0.5 4.127 1.068 0.259 4.05 0.80 13.354 This study OCE205-53BC 1038 26.193 -77.708 5.5 35.04 OC205-89 (Rosenthal et al., 1999) 0-1 H. elegans 10 336 0.5 4.181 1.085 0.259 3.75 0.72 7.365 This study OCE205-60C 1312 26.142 -77.735 4.35 34.99 OC205-89 (Rosenthal et al., 1999) 0-1 H. elegans 10 346 0.5 4.156 0.993 0.239 2.87 0.73 -1.109 This study OCE205-60C 1312 26.142 -77.735 4.35 34.99 OC205-89 (Rosenthal et al., 1999) 0-1 H. elegans 10 342 0.5 4.394 1.071 0.244 7.21 0.82 9.046 This study OCE205-60C 1312 26.142 -77.735 4.35 34.99 OC205-89 (Rosenthal et al., 1999) 0-1 H. elegans 10 420 0.5 4.510 1.112 0.247 3.62 0.78 7.994 This study AII107-71GGC 1887 -31.52 -35.933 2.9 Marchitto et al., 2018 5-7 H. elegans 2.93 0.62 0.212 Marchitto et al., 2018 AII107-71GGC 1887 -31.52 -35.933 2.9 Marchitto et al., 2018 5-7 H. elegans 2.88 0.58 0.201 Marchitto et al., 2018 CHN82-15PC 2151 43.37 -28.233 3.5 Marchitto et al., 2018 0-6 H. elegans 2.6 0.72 0.277 Marchitto et al., 2018 CHN82-15PC 2151 43.37 -28.233 3.5 Marchitto et al., 2018 0-6 H. elegans 2.52 0.61 0.242 Marchitto et al., 2018 KNR166-2-16MC 248 24.40 -83.233 10.8 Marchitto et al., 2018 0-1 H. elegans 3.87 1.41 0.364 Marchitto et al., 2018 KNR166-2-76MC 539 23.58 -79.417 11 Marchitto et al., 2018 0-2 H. elegans 4.11 1.49 0.363 Marchitto et al., 2018 KNR166-2-89MCa 353 24.57 -79.233 17.8 Marchitto et al., 2018 0-3 H. elegans 4.78 1.57 Marchitto et al., 2018 3s outlier omitted KNR166-2-123MC 632 24.77 -79.267 10.6 Marchitto et al., 2018 0-4 H. elegans 3.58 1.3 0.363 Marchitto et al., 2018 RC13-140 2246 2.87 -87.750 2 Marchitto et al., 2018 10 H. elegans 2.11 0.47 0.223 Marchitto et al., 2018 RC23-15 3612 1.22 -87.750 2 Marchitto et al., 2018 5 H. elegans 1.39 0.26 0.187 Marchitto et al., 2018 RC23-22 3215 1 -83.617 2 Marchitto et al., 2018 10 H. elegans 1.39 0.25 0.180 Marchitto et al., 2018 KNR166-2-5MC 447 24.4 -83.38 8.5 35.02 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.9 1.55 0.397 Bryan and Marchitto, 2008 KNR166-2-5MC 447 24.4 -83.38 8.5 35.02 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.75 1.19 0.317 Bryan and Marchitto, 2008 KNR166-2-11MC 751 24.22 -83.3 5.8 34.91 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.86 1.03 0.267 Bryan and Marchitto, 2008 KNR166-2-13MC 348 24.37 -83.24 9.7 35.17 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.89 1.31 0.337 Bryan and Marchitto, 2008 KNR166-2-13MC 348 24.37 -83.24 9.7 35.17 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.83 1.26 0.329 Bryan and Marchitto, 2008 KNR166-2-19MC 173 24.42 -83.21 12.7 35.6 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.77 1.49 0.395 Bryan and Marchitto, 2008 KNR166-2-19MC 173 24.42 -83.21 12.7 35.6 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.79 1.53 0.404 Bryan and Marchitto, 2008 KNR166-2-22MC 398 24.41 -83.37 9 35.08 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 4.2 1.38 0.329 Bryan and Marchitto, 2008 KNR166-2-24MC 494 24.34 -83.25 7.8 34.95 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.62 1.12 0.309 Bryan and Marchitto, 2008 KNR166-2-28MC 648 24.28 -83.27 6.3 34.91 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.79 1.07 0.282 Bryan and Marchitto, 2008 KNR166-2-28MC 648 24.28 -83.27 6.3 34.91 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.74 1.03 0.275 Bryan and Marchitto, 2008 KNR166-2-50MC 198 24.41 -83.22 12.1 35.51 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.85 1.49 0.387 Bryan and Marchitto, 2008 KNR166-2-62MC 547 24.33 -83.26 7 34.91 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.56 1.07 0.301 Bryan and Marchitto, 2008 KNR166-2-66MC 302 23.61 -79.05 19 36.62 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.28 1.56 0.476 Bryan and Marchitto, 2008 KNR166-2-68MC 431 23.61 -79.08 16.6 36.24 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.65 1.64 0.449 Bryan and Marchitto, 2008 KNR166-2-68MC 431 23.61 -79.08 16.6 36.24 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.36 1.49 0.443 Bryan and Marchitto, 2008 KNR166-2-72MC 542 23.75 -79.43 10.8 35.31 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 4.56 1.47 0.322 Bryan and Marchitto, 2008 KNR166-2-79MC 486 23.26 -79.27 12.1 35.5 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.87 1.48 0.382 Bryan and Marchitto, 2008 KNR166-2-92MC 478 24.55 -79.26 15.7 36.13 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.78 1.64 0.434 Bryan and Marchitto, 2008 KNR166-2-94MC 259 24.57 -79.23 18.5 36.57 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 2.69 1.3 0.483 Bryan and Marchitto, 2008 KNR166-2-94MC 259 24.57 -79.23 18.5 36.57 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 4.21 1.3 0.309 Bryan and Marchitto, 2008 KNR166-2-97MC 303 24.56 -79.23 18.6 36.58 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.27 1.51 0.462 Bryan and Marchitto, 2008 KNR166-2-97MC 303 24.56 -79.23 18.6 36.58 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.02 1.42 0.470 Bryan and Marchitto, 2008 KNR166-2-110MC 390 24.58 -79.24 17.3 36.39 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.65 1.69 0.463 Bryan and Marchitto, 2008 KNR166-2-110MC 390 24.58 -79.24 17.3 36.39 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.24 1.46 0.451 Bryan and Marchitto, 2008 KNR166-2-112MC 404 24.64 -79.24 17.1 36.35 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.23 1.48 0.458 Bryan and Marchitto, 2008 KNR166-2-112MC 404 24.64 -79.24 17.1 36.35 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.41 1.55 0.455 Bryan and Marchitto, 2008 KNR166-2-118MC 531 24.59 -79.27 14.5 35.91 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 4.02 1.54 0.383 Bryan and Marchitto, 2008 KNR166-2-118MC 531 24.59 -79.27 14.5 35.91 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.98 1.5 0.377 Bryan and Marchitto, 2008 KNR166-2-121MC 578 24.77 -79.25 11.9 35.48 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 4.33 1.6 0.370 Bryan and Marchitto, 2008 KNR166-2-134MC 441 24.84 -79.22 17.2 36.37 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.65 1.61 0.441 Bryan and Marchitto, 2008 KNR166-2-134MC 441 24.84 -79.22 17.2 36.37 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.51 1.52 0.433 Bryan and Marchitto, 2008 KNR166-2-138MC 484 24.83 -79.23 16.8 36.29 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.87 1.59 0.411 Bryan and Marchitto, 2008 KNR166-2-138MC 484 24.83 -79.23 16.8 36.29 KNR166-2 CTD casts (Bryan and Marchitto, 2008) 0-1 H. elegans 3.68 1.51 0.410 Bryan and Marchitto, 2008