# Northeast Atlantic Foramifinferal Abundance, d15N and Sea Water Temperature Data during the last 10ka #----------------------------------------------------------------------- # 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/29030 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/spooner2020/spooner2020-mc25-a.txt # Description: NOAA location of the template # # Data_Type: Paleoceanography # # Dataset_DOI: # # Parameter_Keywords: population abundance, nitrogen isotopes, age control, reconstruction #--------------------------------------- # Contribution_Date # Date: 2020-02-19 #--------------------------------------- # File_Last_Modified_Date # Date: 2020-02-19 #--------------------------------------- # Title # Study_Name: Northeast Atlantic Foramifinferal Abundance, d15N and Sea Water Temperature Data during the last 10ka #--------------------------------------- # Investigators # Investigators: Spooner, P.T.; Thornalley, D.J.R.; Oppo, D.O.; Fox, A.; Radionovskaya, S.; Green, K.; Rose, N.; Monica, T.; Thrower, L.; Mallett, R.; Cooper, E.; Roberts, J.-M. #--------------------------------------- # Description_Notes_and_Keywords # Description: # Provided Keywords: foraminifera, industrial-era #--------------------------------------- # Publication # Authors: Spooner, P.T.; Thornalley, D.J.R.; Oppo, D.O.; Fox, A.; Radionovskaya, S.; Green, K.; Rose, N.; Monica, T.; Thrower, L.; Mallett, R.; Cooper, E.; Roberts, J.-M. # Published_Date_or_Year: 2020 # Published_Title: Exceptional 20th century ocean circulation in the Northeast Atlantic # Journal_Name: Geophysical Research Letters # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: # Abstract: In the North Atlantic, the subpolar gyre (SPG) connects tropical and high latitude waters, playing a leading role in deep-water formation, propagation of Atlantic water into the Arctic, and as habitat for many ecosystems. Detailed instrumental records spanning the last few decades document significant decadal variability in SPG circulation, with associated hydrographic and ecological changes. Emerging longer-term records provide circumstantial evidence that the North Atlantic also experienced centennial trends during the 20th century. Here, we use marine sediment records to show that there has been a long-term change in SPG circulation during the industrial era, most of which occurred during the 20th century. Moreover, we show that the shift and modern SPG configuration are unprecedented in the last 10,000 years. Modern SPG dynamics have resulted in an expansion of subtropical ecosystems into new habitats and likely also altered the northward transport of heat to high latitudes. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation # Grant: OCE-1304291 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Environment Research Council # Grant: NE/S009736/1 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Horizon 2020 # Grant: ATLAS - 678760 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Leverhulme Trust # Grant: #--------------------------------------- # Site_Information # Site_Name: EN539-MC25 # Location: North Atlantic Ocean # Country: Iceland # Northernmost_Latitude: 62.6125 # Southernmost_Latitude: 62.6125 # Easternmost_Longitude: 20.6358 # Westernmost_Longitude: 20.6358 # Elevation: -1310 #--------------------------------------- # Data_Collection # Collection_Name: EN539-MC25-A Spooner2020 # First_Year: 645 # Last_Year: 2011 # Time_Unit: cal yr BP # Core_Length: 0.5 # Notes: Collection date 30/05/2014 #--------------------------------------- # Species # Species_Name: N/A # Common_Name: N/A # Tree_Species_Code: N/A #--------------------------------------- # Chronology_Information # Chronology: # # Labcode sample identification used by 14C laboratory # depth_top Depth top of sample interval (cm) # depth_bottom Depth bottom of sample interval (cm) # mat.dated Material Dated # 14C.raw conventional radiocarbon age, years before 1950AD # 14C.raw_err radiocarbon age, standard error # datemeth Dating method # reservoir Reservoir correction # delta-R Deviation from global mean reservoir correction # delta-R_err_lo delta-R standard error down # delta-R_err_up delta-R standard error up # calib.14C Calibrated age # calib.14C_1sig_lo Calibrated age, 1-sigma lower confidence bound # calib.14C_1sig_up Calibrated age, 1-sigma upper confidence bound # calib.14C_2sig_lo Calibrated age, 2-sigma lower confidence bound # calib.14C_2sig_up Calibrated age, 2-sigma upper confidence bound # calib_method Calibration method # rejected Rejected sample (yes/no) # notes Notes # # Labcode depth_top depth_bottom mat.dated 14C.raw 14C.raw_err datemeth reservoir delta-R delta-R_err_lo delta-R_err_up calib.14C calib.14C_2sig_lo calib.14C_2sig_up calib_method rejected notes # OS-112778 0 1 Planktic Foraminifera Modern NaN 14C AMS MARINE13 0 0 0 Modern NaN NaN Calib7.1 N NaN # 191610 10 10.5 Planktic Foraminifera (G. bulloides) 785 45 14C AMS MARINE13 0 0 0 416 289 514 Calib7.1 N NaN # OS-113358 19.5 20 Planktic Foraminifera 550 20 14C AMS MARINE13 0 0 0 177 0 285 Calib7.1 N NaN # 191611 29 29.5 Planktic Foraminifera (G. bulloides) 950 30 14C AMS MARINE13 0 0 0 553 473 643 Calib7.1 N NaN # 191612 35 35.5 Planktic Foraminifera (G. bulloides) 1450 40 14C AMS MARINE13 0 0 0 1003 877 1167 Calib7.1 N NaN # OS-117868 39 39.5 Planktic Foraminifera 1410 15 14C AMS MARINE13 0 0 0 960 824 1088 Calib7.1 N NaN # #--------------------------------------- # 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_cm depth,,,centimeter,,paleoceanography,,,N,Depth top of sample ## age_CE age,,,year Common Era,,paleoceanography,,,N, ## Dry_mass mass,,,gram,,paleoceanography,,laboratory method,N, ## planktics>150µm total planktic foraminifers,,,count,,paleoceanography,,optical microscopy,N,samples greater than 150µm ## benthics>150µm total benthic foraminifers,,,count,,paleoceanography,,optical microscopy,N,samples greater than 150µm ## T_quinqueloba identified foraminifer,,,percent,,paleoceanography,,optical microscopy,N,Turborotalita quinqueloba ## O_universa Orbulina universa,,,percent,,paleoceanography,,optical microscopy,N, ## d15N delta 15N,sediment,,per mil,,paleoceanography,,laboratory method,N, #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: -999 depth_cm age_CE Dry_mass planktics>150µm benthics>212µm T_quinqueloba O_universa d15N 0 2011.13 -999.00 4256 82 4.89 0.75 1.41 0.5 2005.82 -999.00 4752 44 4.38 0.48 0.715 1 2000.54 9.05 -999 67 -999 -999 0.5 1.5 1994.62 9.74 3000 58 3.73 0.23 0.186 2 1987.86 11.72 -999 45 -999 -999 0.064 2.5 1981.12 9.70 3400 35 1.18 0.06 0.054 3 1974.07 12.69 -999 35 -999 -999 -0.572 3.5 1966.20 12.30 4304 40 0.37 0.19 0.981 4 1958.28 12.88 -999 40 -999 -999 -0.154 4.5 1950.82 10.81 4000 35 0.00 0.15 -0.412 5 1942.76 14.80 -999 41 -999 -999 -0.412 5.5 1933.86 13.45 4048 41 0.00 0.20 -0.476 6 1925.32 13.69 -999 48 -999 -999 -0.964 6.5 1917.19 12.15 -999 43 -999 -999 -999 7 1909.47 12.37 -999 47 -999 -999 -0.935 7.5 1901.19 13.92 -999 59 -999 -999 -999 8 1892.88 12.50 2408 46 0.17 0.12 -1.232 8.5 1884.55 13.95 -999 50 -999 -999 -999 9 1876.01 13.17 -999 48 -999 -999 -1.213 9.5 1867.75 13.08 -999 47 -999 -999 -999 10 1858.76 15.45 -999 52 -999 -999 -0.659 10.5 1849.49 13.99 3104 -999 1.03 0.06 -999 11 1839.69 17.14 -999 -999 -999 -999 -1.699 12 1821.46 15.46 -999 67 -999 -999 -1.357 13 1802.86 16.48 5776 -999 0.28 0.03 -0.947 14 1783.13 17.90 -999 -999 -999 -999 -1.432 15 1762.90 18.06 -999 78 -999 -999 -1.132 15.5 1752.06 16.39 10816 71 7.10 0.04 -999 16 1741.83 16.09 -999 85 -999 -999 -1.419 16.5 1732.09 14.83 -999 102 -999 -999 -999 17 1722.55 15.47 -999 81 -999 -999 -1.295 17.5 1712.36 16.91 -999 91 -999 -999 -999 18 1702.10 15.66 10560 74 4.55 0.03 -0.917 19 1679.20 16.19 -999 -999 -999 -999 -1.521 20 1645.61 22.48 -999 76 -999 -999 -1.763 20.5 1629.17 16.93 7744 -999 5.37 0.05 -999 21 1616.29 13.97 -999 -999 -999 -999 -1.778 22 1589.92 18.18 -999 43 -999 -999 -1.562 23 1562.34 14.04 3984 -999 1.61 0.03 -0.941 24 1535.82 13.54 -999 -999 -999 -999 -1.385 25 1511.59 14.38 -999 35 -999 -999 -1.033 25.5 1498.23 17.67 5056 -999 2.53 0.02 -999 26 1483.85 16.81 -999 -999 -999 -999 -0.979 27 1455.98 13.31 -999 40 -999 -999 -0.41 28 1430.58 14.90 9696 -999 5.61 0.02 -1.461 29 1400.49 16.76 -999 -999 -999 -999 -1.166 30 1356.54 14.65 -999 36 -999 -999 -3.163 30.5 1333.73 22.53 10240 -999 3.75 0.03 -999 31 1312.27 12.46 -999 -999 -999 -999 -1.237 32 1270.83 15.17 -999 52 -999 -999 -0.686 32.5 1251.34 16.59 -999 -999 -999 -999 -999 33 1232.44 14.23 3200 -999 0.25 0.03 -0.33 34 1197.44 13.01 -999 -999 -999 -999 -0.501 35 1164.09 15.30 -999 49 -999 -999 -1.486 35.5 1146.81 12.86 6144 -999 2.60 0.02 -999 36 1127.93 17.93 -999 -999 -999 -999 -0.823 37 1093.18 15.65 -999 72 -999 -999 0.011 38 1054.82 15.60 6192 -999 2.07 0.05 -0.74 39 1019.84 -999.00 -999 -999 -999 -999 -0.544 40 984.42 12.59 -999 83 -999 -999 -1.342 40.5 967.66 15.48 6128 -999 1.83 0.03 -999 41 949.81 14.43 -999 -999 -999 -999 -1.218 42 914.56 14.18 -999 56 -999 -999 -1.049 43 876.97 14.44 9040 -999 6.02 0.03 -1.041 44 839.64 16.14 -999 -999 -999 -999 -0.919 45 800.85 16.99 -999 58 -999 -999 -2.456 45.5 781.20 15.94 8352 -999 3.83 0.04 -999 46 761.61 16.89 -999 -999 -999 -999 -2.867 47 723.09 17.47 -999 45 -999 -999 -1.833 48 685.29 16.67 5616 42 1.99 0.04 -0.827 49 645.48 -999.00 11296 72 4.25 0.00 -0.285