# 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-mc20-b.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-MC20 # Location: North Atlantic Ocean # Country: Iceland # Northernmost_Latitude: 61.6715 # Southernmost_Latitude: 61.6715 # Easternmost_Longitude: 21.7326 # Westernmost_Longitude: 21.7326 # Elevation: -1711 #--------------------------------------- # Data_Collection # Collection_Name: EN539-MC20-B Spooner2020 # First_Year: 1633 # Last_Year: 2011 # Time_Unit: AD # Core_Length: 0.22 # Notes: Collection date 29/05/2014 #--------------------------------------- # 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 # 210Pb 210Pb activity (Bq/g) # 210Pb_error 210Pb activity standard error (Bq/g) # 214Pb 214Pb activity (Bq/g) # 214Pb_error 214Pb activity standard error (Bq/g) # 137Cs 137Pb activity (Bq/g) # 137Cs_error 137Pb activity standard error (Bq/g) # # 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-112774 0 1 Planktic Foraminifera >Modern NaN 14C AMS MARINE13 0 0 0 -60 NaN NaN Calib7.1 N NaN # OS-120458 12 12.5 Planktic Foraminifera 550 15 14C AMS MARINE13 0 0 0 177 0 285 Calib7.1 N NaN # OS-113590 20 20.5 Planktic Foraminifera (G. bulloides) 605 15 14C AMS MARINE13 0 0 0 243 89 392 Calib7.1 N NaN # OS-120508 30.5 31 Planktic Foraminifera 870 15 14C AMS MARINE13 0 0 0 492 404 604 Calib7.1 N NaN # OS-113352 43 43.5 Planktic Foraminifera (G. bulloides) 1060 20 14C AMS MARINE13 0 0 0 626 529 712 Calib7.1 N NaN # # depth_top depth_bottom mat.dated 210Pb 210Pb_error 214Pb 214Pb_error 137Cs 137Cs_error NaN NaN NaN NaN NaN NaN NaN NaN # 0 0.5 Bulk sediment 1.03390912800742 1.59222005713143E-02 2.73408700317108E-02 1.57756820082971E-03 5.85929369482706E-04 4.77239471443664E-04 # 2 2.5 Bulk sediment 0.19176206261568 2.58687022468553E-02 2.88496171403869E-02 3.55427283169567E-03 1.78558682746091E-03 1.74880373881521E-03 # 4 4.5 Bulk sediment 0.216170802721089 2.37787882993197E-02 4.87237284834263E-02 5.7493999610443E-03 -1.7145186409563E-03 - # 6 6.5 Bulk sediment 9.03266918175721E-02 2.46862848737425E-02 6.45790547589438E-02 6.34812108280418E-03 -3.33458801961141E-03 - # 9 9.5 Bulk sediment 9.56645238095239E-02 2.27490237619048E-02 3.81773047814609E-02 4.39802551082429E-03 3.43910468227472E-04 6.3093814501012E-04 # 12 12.5 Bulk sediment 0.469270161241712 1.34680536276371E-02 4.54056820315546E-02 3.35547990213189E-03 1.28559433946096E-04 3.60043550709437E-04 # 15 15.5 Bulk sediment 8.51135898999124E-02 3.90926718410298E-02 3.21836445393487E-02 3.8395087935443E-03 -2.98585111734096E-03 - # 18 18.5 Bulk sediment 1.59829425540182E-02 0.017402227852815 0.052487875097359 4.05731274502585E-03 4.39212489429429E-04 4.3056000338767E-04 # #--------------------------------------- # 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>150µm T_quinqueloba O_universa d15N 0 2011.02 9.98 3936 -999 6.91 0.36 4.18 0.5 2003.61 14.82 -999 -999 -999 -999 3.84 1 1994.33 16.24 4064 40 0.39 0.15 1.63 1.5 1985.72 12.57 -999 -999 -999 -999 -0.40 2 1977.26 15.74 4400 50 0.00 0.09 -1.13 2.5 1968.16 14.74 -999 -999 -999 -999 -0.53 3 1959.58 13.99 3720 36 1.08 0.11 -0.37 3.5 1950.96 14.84 -999 -999 -999 -999 -0.86 4 1942.42 13.73 7152 90 3.80 0.18 -1.02 4.5 1934.03 14.35 -999 -999 -999 -999 -1.08 5 1925.49 14.25 9856 60 3.90 0.00 -1.91 5.5 1917.13 13.74 -999 -999 -999 -999 -1.69 6 1908.22 16.09 7760 48 8.25 0.06 -1.00 6.5 1898.83 15.31 -999 -999 -999 -999 -1.26 7 1890.14 13.77 12288 52 10.94 0.02 -0.78 7.5 1881.94 13.69 -999 -999 -999 -999 -1.13 8 1872.87 16.66 10576 63 6.20 0.01 -1.61 8.5 1863.60 14.36 -999 -999 -999 -999 -1.05 9 1854.48 16.16 14208 61 11.49 0.01 -0.76 9.5 1845.25 14.74 -999 -999 -999 -999 -0.02 10 1836.61 14.19 8896 53 9.35 0.00 -0.66 10.5 1827.50 16.29 -999 -999 -999 -999 -0.20 11 1818.80 12.82 8672 48 9.96 0.10 0.60 11.5 1811.10 12.98 -999 -999 -999 -999 0.18 12 1803.30 13.12 9472 57 7.43 0.21 0.23 12.5 1795.13 14.23 -999 -999 -999 -999 -0.27 13 1786.25 15.47 9984 56 9.94 0.12 0.14 13.5 1777.05 15.34 -999 -999 -999 -999 -0.39 14 1768.14 14.48 -999 53 -999 -999 -0.13 14.5 1759.73 13.67 -999 -999 -999 -999 -0.86 15 1750.90 15.88 16352 65 6.85 0.02 -0.51 15.5 1742.10 13.58 -999 -999 -999 -999 -0.60 16 1734.04 13.41 -999 55 -999 -999 -0.43 16.5 1726.29 12.53 -999 -999 -999 -999 -0.40 17 1718.65 13.04 -999 30 -999 -999 -0.69 17.5 1710.79 13.29 -999 -999 -999 -999 -1.14 18 1702.71 13.73 -999 51 -999 -999 -0.53 18.5 1694.01 15.40 -999 -999 -999 -999 -0.32 19 1684.41 16.71 -999 46 -999 -999 -0.52 19.5 1674.69 15.85 -999 -999 -999 -999 -0.63 20 1665.21 14.63 16032 86 7.39 0.01 -1.11 20.5 1654.80 15.23 -999 -999 -999 -999 -0.26 21 1644.38 15.40 -999 70 -999 -999 0.32 21.5 1633.96 17.31 -999 -999 -999 -999 -0.74