# North Atlantic Uk'37 data and SST Reconstruction from the Pliocene #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # 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/ # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/lawrence2017/lawrence2017-609b.txt # Description: NOAA location of the template # # Archive: Paleoceanography # # Parameter_Keywords: biomarkers, reconstruction #--------------------------------------- # Contribution_Date # Date: 2017-06-12 #--------------------------------------- # File_Last_Modified_Date # Date: 2017-06-12 #--------------------------------------- # Title # Study_Name: North Atlantic Uk'37 data and SST Reconstruction from the Pliocene #--------------------------------------- # Investigators # Investigators: Lawrence, K.T. ; Woodard, S.C. #--------------------------------------- # Description_Notes_and_Keywords # Description: Proxy Comparison # Provided Keywords: alkenones, Uk'37 SST, Mg/Ca SST, Pliocene, sea surface temperature, North Atlantic #--------------------------------------- # Publication # Authors: Lawrence, K.T. and S.C. Woodard # Published_Date_or_Year: 2017 # Published_Title: Past sea surface temperatures as measured by different proxies - A cautionary tale from the late Pliocene # Journal_Name: Paleoceanography # Volume: 32 # Edition: # Issue: # Pages: 318-324 # Report Number: # DOI: 10.1002/2017PA003101 # Online_Resource: # Full_Citation: # Abstract: The paleoclimate community uses a variety of different proxies to reconstruct past sea surface temperatures. Estimates from different paleothermometers are often used interchangeably despite a scarcity of studies exploring the validity of this practice. Here, we provide an orbital resolution case study from the Pliocene using Mg/Ca and alkenone paleothermometry that reinforces results from previous studies showing consistent estimates for some climate parameters and inconsistent results for others. We argue that the paleoclimate community should undertake an effort to more systematically evaluate if, when, and where climate estimates from different paleothermometers can be used interchangeably. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: # Grant: #--------------------------------------- # Site Information # Site_Name: DSDP 609B # Location: North Atlantic Ocean # Country: # Northernmost_Latitude: 49.877783 # Southernmost_Latitude: 49.877783 # Easternmost_Longitude: -24.238117 # Westernmost_Longitude: -24.238117 # Elevation: -3883 #--------------------------------------- # Data_Collection # Collection_Name: DSDP609B Uk37 Lawrence2017 # First_Year: 3409440 # Last_Year: 2985740 # Time_Unit: cal yr BP # Core_Length: # Notes: #--------------------------------------- # Chronology_Information # Chronology: # The age model used for this data is based on the tuned benthic foraminiferal d18O record generated by Bartoli et al., 2005 which was then updated to the LR04 timescale developed by Lisiecki & Raymo, 2005 using conversions (S95 to LR04) available at https://doi.pangaea.de/10.1594/PANGAEA.704173 #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab- 10 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data,additional info ## sitename site name,,,,,,,,C, ## section core section,,,,,,,,C, ## interval sample interval,,,cm,,,,,C, ## depth_mbsf depth,,,m,,,,,N,meters below seafloor ## depth_mcd depth,,,m,,,,,N,meters composite depth ## age_calkaBP age,,,calendar ka BP,,,,,N, ## Uk'37 alkenone unsaturation index,,,unitless,,,,,N, ## SST-Uk'37 sea surface temperature,,,degrees celsius,,,based on Muller et al. 1998 calibration,,N,based on Muller et al. 1998 calibration #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: NA sitename section interval depth_mbsf depth_mcd age_calkaBP Uk'37 SST-Uk'37 609B 23-5 27-29 207.38 211.765 2985.74 0.573 16.0 609B 23-5 27-29 207.38 211.765 2985.74 0.571 16.0 609B 23-5 87-89 207.98 212.365 2987.74 0.575 16.1 609B 23-5 117-119 208.28 212.665 2988.75 0.592 16.6 609B 23-6 8.0-10.0 208.69 213.075 2990.12 0.595 16.7 609B 23-6 38-40 208.99 213.375 2991.92 0.622 17.5 609B 23-6 68-70 209.29 213.675 2994.79 0.599 16.8 609B 23-6 98-100 209.59 213.975 2997.61 0.588 16.5 609B 23-6 128-130 209.89 214.275 3000.51 0.570 15.9 609B 23-6 128-130 209.89 214.275 3000.51 0.573 16.0 609B 23-7 0-2 210.11 214.495 3002.59 0.566 15.8 609B 23-7 0-2 210.11 214.495 3002.59 0.561 15.7 609B 23-7 30-32 210.41 214.795 3005.53 0.571 16.0 609B 23-7 50-52 210.61 214.995 3007.41 0.578 16.2 609B 24-1 17-19 210.88 215.265 3017.17 0.562 15.7 609B 24-1 37-39 211.08 215.465 3025.03 0.564 15.7 609B 24-1 67-69 211.38 215.765 3036.51 0.610 17.1 609B 24-1 97-99 211.68 216.065 3047.40 0.617 17.4 609B 24-1 127-129 211.98 216.365 3053.61 0.632 17.8 609B 24-2 3.0-5.0 212.24 216.625 3055.83 0.623 17.6 609B 24-2 33-35 212.54 216.925 3058.32 0.597 16.7 609B 24-2 63-65 212.84 217.225 3060.80 0.613 17.2 609B 24-2 93-95 213.14 217.525 3063.35 0.627 17.7 609B 24-2 123-125 213.44 217.825 3065.80 0.625 17.6 609B 24-3 4.0-6.0 213.75 218.135 3070.80 0.647 18.3 609B 24-3 34-36 214.05 218.435 3079.80 0.703 20.0 609B 24-3 34-36 214.05 218.435 3079.80 0.702 19.9 609B 24-3 34-36 214.05 218.435 3079.80 0.697 19.8 609B 24-3 64-66 214.35 218.735 3088.80 0.687 19.5 609B 24-3 64-66 214.35 218.735 3088.80 0.697 19.8 609B 24-3 94-96 214.65 219.035 3097.60 0.678 19.2 609B 24-3 124-126 214.95 219.335 3099.38 0.643 18.2 609B 24-4 7.0-9.0 215.28 219.665 3101.29 0.651 18.4 609B 24-4 37-39 215.58 219.965 3103.08 0.654 18.5 609B 24-4 67-69 215.88 220.265 3104.85 0.685 19.4 609B 24-4 97-99 216.18 220.565 3106.64 0.685 19.4 609B 24-4 127-129 216.48 220.865 3108.40 0.657 18.6 609B 24-5 8.0-10.0 216.79 221.175 3110.24 0.659 18.6 609B 24-5 38-40 217.09 221.475 3112.01 0.672 19.0 609B 24-5 68-70 217.39 221.775 3113.74 0.652 18.4 609B 24-5 96-98 217.67 222.055 3115.42 0.672 19.0 609B 24-5 126-128 217.97 222.355 3119.50 0.661 18.7 609B 24-6 5.0-7.0 218.26 222.645 3122.40 0.617 17.4 609B 24-6 5.0-7.0 218.26 222.645 3122.40 0.617 17.4 609B 24-6 35-37 218.56 222.945 3125.40 0.609 17.1 609B 24-6 65-67 218.86 223.245 3128.43 0.589 16.5 609B 24-6 95-97 219.16 223.545 3131.50 0.581 16.3 609B 24-6 123-125 219.44 223.825 3134.30 0.572 16.0 609B 24-7 0-2 219.71 224.095 3137.14 0.583 16.3 609B 24-7 26-28 219.97 224.355 3141.01 0.574 16.1 609B 25-1 4.0-6.0 220.35 224.735 3146.75 0.655 18.5 609B 25-1 34-36 220.65 225.035 3151.27 0.732 20.8 609B 25-1 64-66 220.95 225.335 3155.73 0.715 20.3 609B 25-1 94-96 221.25 225.635 3160.24 0.633 17.9 609B 25-1 124-126 221.55 225.935 3164.77 0.639 18.0 609B 25-2 4.0-6.0 221.85 226.235 3169.30 0.657 18.6 609B 25-2 34-36 222.15 226.535 3173.22 0.677 19.2 609B 25-2 64-66 222.45 226.835 3174.97 0.657 18.6 609B 25-2 94-96 222.75 227.135 3176.75 0.626 17.6 609B 25-2 124-126 223.05 227.435 3178.56 0.611 17.2 609B 25-2 124-126 223.05 227.435 3178.56 0.611 17.2 609B 25-3 5.0-7.0 223.36 227.745 3181.50 0.652 18.4 609B 25-3 35-37 223.66 228.045 3184.50 0.641 18.1 609B 25-3 65-67 223.96 228.345 3192.37 0.626 17.6 609B 25-3 95-97 224.26 228.645 3200.89 0.675 19.1 609B 25-3 125-127 224.56 228.945 3206.42 0.678 19.2 609B 25-4 5.0-7.0 224.86 229.245 3210.72 0.668 18.9 609B 25-4 35-37 225.16 229.545 3214.58 0.646 18.2 609B 25-4 65-67 225.46 229.845 3218.35 0.635 17.9 609B 25-4 95-97 225.76 230.145 3221.90 0.639 18.0 609B 25-4 95-97 225.76 230.145 3221.90 0.643 18.1 609B 25-4 125-127 226.06 230.445 3225.37 0.634 17.9 609B 25-5 5.0-7.0 226.36 230.745 3229.42 0.624 17.6 609B 25-5 35-37 226.66 231.045 3233.37 0.635 17.9 609B 25-5 65-67 226.96 231.345 3235.95 0.617 17.3 609B 25-5 95-97 227.26 231.645 3238.52 0.623 17.5 609B 25-5 95-97 227.26 231.645 3238.52 0.623 17.5 609B 25-5 125-127 227.56 231.945 3241.05 0.617 17.4 609B 25-6 6.0-8.0 227.87 232.255 3243.75 0.610 17.2 609B 25-6 36-38 228.17 232.555 3248.02 0.597 16.8 609B 25-6 66-68 228.47 232.855 3254.60 0.629 17.7 609B 25-6 96-98 228.77 233.155 3258.60 0.615 17.3 609B 25-6 126-128 229.07 233.455 3260.42 0.624 17.6 609B 25-7 0-2 229.31 233.695 3261.89 0.626 17.6 609B 25-7 26-28 229.57 233.955 3263.48 0.633 17.8 609B 25-7 48-50 229.77 234.155 3266.39 0.619 17.4 609B 26-1 35-37 230.26 234.645 3268.84 0.657 18.6 609B 26-1 65-67 230.56 234.945 3270.19 0.659 18.6 609B 26-1 100-102 230.91 235.295 3271.81 0.654 18.5 609B 26-1 124-126 231.15 235.535 3272.87 0.684 19.4 609B 26-2 5.0-7.0 231.46 235.845 3274.39 0.672 19.0 609B 26-2 5.0-7.0 231.46 235.845 3274.39 0.668 18.9 609B 26-2 35-37 231.76 236.145 3275.85 0.669 18.9 609B 26-2 65-67 232.06 236.445 3277.45 0.687 19.5 609B 26-2 95-97 232.36 236.745 3279.12 0.705 20.0 609B 26-2 125-127 232.66 237.045 3280.87 0.688 19.5 609B 26-3 5.0-7.0 232.96 237.345 3282.60 0.686 19.5 609B 26-3 34-36 233.25 237.635 3284.26 0.684 19.4 609B 26-3 64-66 233.55 237.935 3285.95 0.676 19.1 609B 26-3 94-96 233.85 238.235 3287.99 0.681 19.3 609B 26-3 124-126 234.15 238.535 3290.72 0.664 18.8 609B 26-4 5.0-7.0 234.46 238.845 3293.50 0.611 17.2 609B 26-4 35-37 234.76 239.145 3299.57 0.569 15.9 609B 26-4 65-67 235.06 239.445 3312.27 0.583 16.3 609B 26-4 95-97 235.36 239.745 3329.13 0.608 17.1 609B 26-4 95-97 235.36 239.745 3329.13 0.603 16.9 609B 26-4 125-127 235.66 240.045 3340.73 0.589 16.5 609B 26-5 4.0-6.0 235.95 240.335 3355.61 0.604 17.0 609B 26-5 34-36 236.25 240.635 3364.85 0.660 18.7 609B 26-5 34-36 236.25 240.635 3364.85 0.654 18.5 609B 26-5 50-52 236.41 240.795 3366.70 0.680 19.3 609B 26-5 64-66 236.55 240.935 3368.33 0.665 18.8 609B 26-5 80-82 236.71 241.095 3370.29 0.670 19.0 609B 26-5 94-96 236.85 241.235 3371.93 0.666 18.9 609B 26-5 111-113 237.02 241.405 3373.89 0.702 19.9 609B 26-5 124-126 237.15 241.535 3375.42 0.687 19.5 609B 26-5 140-142 237.31 241.695 3377.28 0.690 19.6 609B 26-6 4.0-6.0 237.45 241.835 3378.90 0.680 19.3 609B 26-6 22-24 237.63 242.015 3380.97 0.690 19.6 609B 26-6 34-36 237.75 242.135 3382.39 0.689 19.6 609B 26-6 34-36 237.75 242.135 3382.39 0.689 19.5 609B 26-6 52-54 237.93 242.315 3385.44 0.714 20.3 609B 26-6 64-66 238.05 242.435 3387.79 0.710 20.2 609B 26-6 64-66 238.05 242.435 3387.79 0.710 20.2 609B 26-6 64-66 238.05 242.435 3387.79 0.711 20.2 609B 26-6 82-84 238.23 242.615 3391.33 0.707 20.1 609B 26-6 82-84 238.23 242.615 3391.33 0.707 20.1 609B 26-6 82-84 238.23 242.615 3391.33 0.703 20.0 609B 26-6 94-96 238.35 242.735 3393.71 0.687 19.5 609B 26-6 112-114 238.53 242.915 3397.19 0.676 19.2 609B 26-6 124-126 238.65 243.035 3399.76 0.663 18.8 609B 26-6 124-126 238.65 243.035 3399.76 0.666 18.8 609B 26-6 124-126 238.65 243.035 3399.76 0.668 18.9 609B 26-6 142-144 238.83 243.215 3403.77 0.647 18.3 609B 26-6 142-144 238.83 243.215 3403.77 0.641 18.1 609B 26-7 3.0-5.0 238.94 243.325 3406.43 0.663 18.7 609B 26-7 15-17 239.06 243.445 3409.44 0.660 18.7