# Western Pacific Warm Pool ODP871 500 KYr Foraminiferal d18O and Mg/Ca SST #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original reference when using these data, # plus the Online Resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online Resource: http://hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:13479 #-------------------- # Archive/proxy: # Paleoceanography #-------------------- # Contribution Date # Date: 10-29-2012 #-------------------- # Title: Western Pacific Warm Pool ODP871 500 KYr Foraminiferal d18O and Mg/Ca # SST #-------------------- # Investigators: Dyez, K.A.; Ravelo, A.C. #-------------------- # Description and Notes # Mg/Ca paleothermometry from the planktonic foraminifera Globigerinoides ruber from the past 500 k.y. at Ocean Drilling Program (ODP) Site 871 in the western Pacific warm pool. # #-------------------- # Publication/Citation # Authors: Dyez, K.A. and A.C. Ravelo # Journal Name: Geology # Published Title: Late Pleistocene tropical Pacific temperature sensitivity to radiative greenhouse gas forcing # Published Date: 10-19-2012 # DOI: 110.1130/G33425.1 # Volume: # Issue: January 2013 # Pages: # Abstract: Understanding how global temperature changes with increasing atmospheric greenhouse gas concentrations, or climate sensitivity, is of central importance to climate change research. Climate models provide sensitivity estimates that may not fully incorporate slow, long-term feedbacks such as those involving ice sheets and vegetation. Geological studies, on the other hand, can provide estimates that integrate long- and short-term climate feedbacks to radiative forcing. Because high latitudes are thought to be most sensitive to greenhouse gas forcing owing to, for example, ice-albedo feedbacks, we focus on the tropical Pacific Ocean to derive a minimum value for long-term climate sensitivity. Using Mg/Ca paleothermometry from the planktonic foraminifera Globigerinoides ruber from the past 500 k.y. at Ocean Drilling Program (ODP) Site 871 in the western Pacific warm pool, we estimate the tropical Pacific climate sensitivity parameter (lambda) to be 0.94-1.06°C (W m-2)-1, higher than that predicted by model simulations of the Last Glacial Maximum or by models of doubled greenhouse gas concentration forcing. This result suggests that models may not yet adequately represent the long-term feedbacks related to ocean circulation, vegetation and associated dust, or the cryosphere, and/or may underestimate the effects of tropical clouds or other short-term feedback processes. # #--------------------- # Funding Agency # Funding Agency Name: Consortium for Ocean Leadership # Grant: Schlanger Fellowship # Funding Agency Name: US National Science Foundation # Grant: OCE-0902047 #-------------------- # Site Information # Name: ODP871 # Region: Western Tropical Pacific # Country: # Northmost Latitude: 5.5572 # Southmost Latitude: 5.5572 # Eastmost Longitude: 172.3443 # Westmost Longitude: 172.3443 # Elevation: -1254 m #------------------ # Data Collection # Core Name: ODP871Dyez2012 # First Year: 537150 # Last Year: 0 # Time Unit: Calendar Years before present # Core Length: 5.59 m # Notes: #------------------ # Chronology # # # # #------------------ # Variables # # End Description/Documentation (lines begin with #) # Data lines follow (have no #) # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (8 components: material, error, units, anomaly, period, archive, detail, method) # Data line format: tab-delimited text, variable short name as header # Missing values -999 ## depth_m depth, , , m, , , MBSF,,N ## age_calkaBP Age, , ,cal kyr BP, , , ,,N ## d18Og.rub delta 18O,Globigerinoides ruber,,per mil VPDB,,paleoceanography,,,N ## Mg/Ca-g.rub Magnesium/Calcium ratio,Globigerinoides ruber,,paleoceanography,,,N ## sst-Mg/Ca-g.rub Sea Surface Temperature,Mg/Ca Globigerinoides ruber,,deg C,,paleoceanography,,,N ## notes notes,,, ,,,Site Hole Core Type Section Interval-cm,,C #--------------------------- # Data: # Missing Value: depth_m age_calkaBP d18Og.rub Mg/Ca-g.rub sst notes 0.01 0 4.18 3.858 28 871B1H1 1 - 3 0.04 2.87 4.35 4.072 28.5 871B1H1 4 - 6 0.07 5.89 4 3.839 27.9 871B1H1 7 - 9 0.1 8.91 4.08 3.962 28.2 871B1H1 10 - 12 0.13 11.93 3.96 4.073 28.5 871B1H1 13 - 15 0.16 14.95 4.43 3.669 27.5 871B1H1 16 - 18 0.19 17.97 3.56 3.942 28.2 871B1H1 19 - 21 0.22 20.99 4.18 4.109 28.6 871B1H1 22 - 24 0.25 24.01 4.05 3.952 28.2 871B1H1 25 - 27 0.28 27.03 4.41 3.621 27.4 871B1H1 28 - 30 0.31 30.05 4.44 3.897 28.1 871B1H1 31 - 33 0.34 33.07 3.29 3.867 28 871B1H1 34 - 36 0.37 36.09 4.2 4.119 28.6 871B1H1 37 - 39 0.4 39.11 3.61 3.944 28.2 871B1H1 40 - 42 0.43 42.13 4.84 3.786 27.8 871B1H1 43 - 45 0.46 45.15 4.6 3.784 27.8 871B1H1 46 - 48 0.49 48.16 4.09 3.669 27.5 871B1H1 49 - 51 0.52 51.18 3.82 3.61 27.4 871B1H1 52 - 54 0.55 54.2 4.57 3.702 27.6 871B1H1 55 - 57 0.58 57.22 4.24 3.639 27.5 871B1H1 58 - 60 0.61 60.24 4.66 3.675 27.6 871B1H1 61 - 63 0.64 63.26 4.28 3.705 27.6 871B1H1 64 - 66 0.67 66.28 4.42 3.582 27.3 871B1H1 67 - 69 0.7 69.3 4.18 3.948 28.2 871B1H1 70 - 72 0.73 72.32 4 3.682 27.6 871B1H1 73 - 75 0.76 75.34 4.53 3.57 27.3 871B1H1 76 - 78 0.79 78.36 4.09 3.661 27.5 871B1H1 79 - 81 0.82 81.38 4.2 3.73 27.7 871B1H1 82 - 84 0.85 84.4 3.68 3.857 28 871B1H1 85 - 87 0.88 87.42 3.84 3.741 27.7 871B1H1 88 - 90 0.91 90.44 3.89 3.933 28.2 871B1H1 91 - 93 0.94 93.46 3.95 3.829 27.9 871B1H1 94 - 96 0.97 96.48 3.87 3.969 28.3 871B1H1 97 - 99 1 99.5 3.91 3.933 28.2 871B1H1 100 - 102 1.03 102.52 3.63 3.907 28.1 871B1H1 103 - 105 1.06 105.53 3.92 3.941 28.2 871B1H1 106 - 108 1.09 108.55 4.06 4.38 29.2 871B1H1 109 - 111 1.12 111.57 3.77 3.868 28 871B1H1 112 - 114 1.15 114.59 3.95 4.266 28.9 871B1H1 115 - 117 1.18 117.61 3.55 4.04 28.4 871B1H1 118 - 120 1.21 120.63 4.01 4.473 29.4 871B1H1 121 - 123 1.24 123.65 3.55 4.746 29.9 871B1H1 124 - 126 1.27 126.67 4.06 4.533 29.5 871B1H1 127 - 129 1.3 129.69 3.77 4.558 29.5 871B1H1 130 - 132 1.33 132.54 4.78 4.198 28.8 871B1H1 133 - 135 1.36 135.19 4.31 4.196 28.8 871B1H1 136 - 138 1.39 137.84 4.54 3.912 28.1 871B1H1 139 - 141 1.42 140.49 4.73 4.113 28.6 871B1H1 142 - 144 1.45 143.14 4.48 4.1 28.5 871B1H1 145 - 147 1.48 145.79 4.41 4.077 28.5 871B1H1 148 - 150 1.5 147.56 4.35 3.898 28.1 871B1H2 0 - 1 1.53 150.21 4.33 3.843 28 871B1H2 3 - 4 1.56 152.86 4.36 3.922 28.1 871B1H2 6 - 7 1.59 155.51 4.28 3.791 27.8 871B1H2 9 - 10 1.62 158.16 4.21 3.685 27.6 871B1H2 12 - 13 1.65 160.81 4.33 3.754 27.7 871B1H2 15 - 16 1.68 163.46 3.9 3.714 27.6 871B1H2 18 - 19 1.71 166.11 4.31 3.708 27.6 871B1H2 21 - 22 1.74 168.76 4.17 3.768 27.8 871B1H2 24 - 25 1.77 171.41 3.86 -999 -999 871B1H2 27 - 28 1.8 174.06 4.24 3.704 27.6 871B1H2 30 - 31 1.83 176.71 4.25 3.725 27.7 871B1H2 33 - 34 1.86 179.36 4.27 3.494 27.1 871B1H2 36 - 37 1.89 182 4.11 3.555 27.3 871B1H2 39 - 40 1.92 184.65 4.22 3.829 27.9 871B1H2 42 - 43 1.95 187.3 3.88 3.813 27.9 871B1H2 45 - 46 1.98 189.95 3.9 3.878 28 871B1H2 48 - 49 2.01 192.6 3.71 4.01 28.3 871B1H2 51 - 52 2.04 195.25 3.52 4.22 28.8 871B1H2 54 - 55 2.07 197.9 3.48 4.247 28.9 871B1H2 57 - 58 2.1 200.55 3.69 4.295 29 871B1H2 60 - 61 2.13 203.2 3.75 4.082 28.5 871B1H2 63 - 64 2.16 205.85 3.68 4.099 28.5 871B1H2 66 - 67 2.19 208.5 4.04 4.371 29.1 871B1H2 69 - 70 2.22 211.15 3.3 4.075 28.5 871B1H2 72 - 73 2.25 213.8 4.04 4.218 28.8 871B1H2 75 - 76 2.28 216.45 3.47 4.035 28.4 871B1H2 78 - 79 2.31 219.1 3.65 3.897 28.1 871B1H2 81 - 82 2.34 221.9 4.74 3.628 27.4 871B1H2 84 - 85 2.37 224.78 4.09 3.677 27.6 871B1H2 87 - 88 2.4 227.66 -999 -999 -999 871B1H2 90 - 93 2.43 230.55 4.1 3.821 27.9 871B1H2 93 - 94 2.46 233.43 4.13 4.281 28.9 871B1H2 96 - 97 2.49 236.31 3.43 3.765 27.8 871B1H2 99 - 100 2.52 239.19 3.82 4.164 28.7 871B1H2 102 - 103 2.55 242.08 4.24 4.04 28.4 871B1H2 105 - 106 2.58 244.96 4.21 3.972 28.3 871B1H2 108 - 109 2.61 247.84 4.39 3.706 27.6 871B1H2 111 - 112 2.64 250.73 4.34 3.632 27.4 871B1H2 114 - 115 2.67 253.61 4.51 3.697 27.6 871B1H2 117 - 118 2.7 256.49 4.16 3.713 27.6 871B1H2 120 - 121 2.73 259.37 4.24 3.815 27.9 871B1H2 123 - 124 2.76 262.26 4.1 3.718 27.7 871B1H2 126 - 127 2.79 265.14 3.85 3.795 27.8 871B1H2 129 - 130 2.82 268.02 4.36 3.732 27.7 871B1H2 132 - 133 2.85 270.91 3.84 3.882 28 871B1H2 135 - 136 2.88 273.79 3.85 3.552 27.2 871B1H2 138 - 139 2.91 276.67 3.77 3.506 27.1 871B1H2 141 - 142 2.94 279.55 4.21 4.067 28.5 871B1H2 144 - 145 2.97 282.44 3.67 3.884 28.1 871B1H2 147 - 148 3.01 286.28 3.7 3.835 27.9 871B1H3 1 - 3 3.04 289.16 3.5 4.044 28.4 871B1H3 4 - 6 3.07 292.05 3.47 3.947 28.2 871B1H3 7 - 9 3.1 294.93 3.42 3.642 27.5 871B1H3 10 - 12 3.13 297.81 3.39 3.744 27.7 871B1H3 13 - 15 3.16 300.69 3.98 3.679 27.6 871B1H3 16 - 18 3.19 303.58 3.81 3.865 28 871B1H3 19 - 21 3.22 306.46 3.73 4.058 28.5 871B1H3 22 - 24 3.25 309.34 3.98 4.098 28.5 871B1H3 25 - 27 3.28 312.23 3.65 4.18 28.7 871B1H3 28 - 30 3.31 315.11 3.66 3.995 28.3 871B1H3 31 - 33 3.34 317.99 3.59 4.209 28.8 871B1H3 34 - 36 3.37 320.87 3.58 4.203 28.8 871B1H3 37 - 39 3.4 323.29 2.76 4.154 28.7 871B1H3 40 - 42 3.43 325.38 3.02 4.448 29.3 871B1H3 43 - 45 3.46 327.46 -999 4.605 29.6 871B1H3 46 - 48 3.49 329.54 3.68 4.59 29.6 871B1H3 49 - 51 3.52 331.62 3.93 4.809 30 871B1H3 52 - 54 3.55 333.71 3.12 4.534 29.5 871B1H3 55 - 57 3.58 335.79 4.42 3.928 28.2 871B1H3 58 - 60 3.61 337.87 3.85 3.996 28.3 871B1H3 61 - 63 3.64 340.67 4.38 3.764 27.8 871B1H3 64 - 66 3.67 343.75 4.65 3.816 27.9 871B1H3 67 - 69 3.7 346.84 4.51 3.885 28.1 871B1H3 70 - 72 3.73 349.93 4.49 3.816 27.9 871B1H3 73 - 75 3.76 353.01 4.1 3.821 27.9 871B1H3 76 - 78 3.79 356.1 4.39 3.95 28.2 871B1H3 79 - 81 3.82 359.19 4.47 3.915 28.1 871B1H3 82 - 84 3.85 362.27 4.11 3.765 27.8 871B1H3 85 - 87 3.88 365.36 4.59 3.608 27.4 871B1H3 88 - 90 3.91 368.45 4.27 3.559 27.3 871B1H3 91 - 93 3.94 371.53 4.23 3.606 27.4 871B1H3 94 - 96 3.97 374.62 4.21 3.683 27.6 871B1H3 97 - 99 4 377.71 3.7 3.68 27.6 871B1H3 100 - 102 4.03 380.79 4.07 3.722 27.7 871B1H3 103 - 105 4.06 383.88 4.17 3.841 28 871B1H3 106 - 108 4.09 386.97 3.76 3.846 28 871B1H3 109 - 111 4.12 390.05 3.57 4.023 28.4 871B1H3 112 - 114 4.15 393.14 3.89 4.047 28.4 871B1H3 115 - 117 4.18 396.23 3.86 4.255 28.9 871B1H3 118 - 120 4.21 399.31 3.62 4.342 29.1 871B1H3 121 - 123 4.24 402.4 3.25 4.678 29.8 871B1H3 124 - 126 4.27 405.49 2.74 4.807 30 871B1H3 127 - 129 4.3 408.57 -999 4.918 30.2 871B1H3 130 - 132 4.33 411.66 3.78 4.649 29.7 871B1H3 133 - 135 4.36 414.75 3.29 4.72 29.9 871B1H3 136 - 138 4.39 417.83 3.42 4.692 29.8 871B1H3 139 - 141 4.42 420.92 4.89 4.406 29.2 871B1H3 142 - 144 4.45 424.01 4.05 4.228 28.8 871B1H3 145 - 147 4.48 427.09 4.32 4.227 28.8 871B1H3 148 - 150 4.51 430.64 4.98 3.864 28 871B1H4 1 - 3 4.54 434.24 4.6 3.623 27.4 871B1H4 4 - 6 4.57 437.84 4.21 3.49 27.1 871B1H4 7 - 9 4.6 441.44 4.45 3.561 27.3 871B1H4 10 - 12 4.63 445.04 4.68 3.584 27.3 871B1H4 13 - 15 4.66 448.64 4.28 3.586 27.3 871B1H4 16 - 18 4.69 452.24 4.34 3.603 27.4 871B1H4 19 - 21 4.72 455.84 4.44 3.906 28.1 871B1H4 22 - 24 4.75 459.44 4.64 3.684 27.6 871B1H4 25 - 27 4.78 463.04 4.15 3.731 27.7 871B1H4 28 - 30 4.81 466.64 4.45 3.469 27 871B1H4 31 - 33 4.84 470.24 4.33 3.423 26.9 871B1H4 34 - 36 4.87 473.85 4.39 3.391 26.8 871B1H4 37 - 39 4.9 477.45 4.14 3.379 26.8 871B1H4 40 - 42 4.93 481.05 3.96 3.549 27.2 871B1H4 43 - 45 4.96 483.7 3.06 3.56 27.3 871B1H4 46 - 48 4.99 485.98 3.5 3.676 27.6 871B1H4 49 - 51 5.02 488.26 3.66 3.978 28.3 871B1H4 52 - 54 5.05 490.54 2.83 4.179 28.7 871B1H4 55 - 57 5.08 492.82 3.69 4.1 28.5 871B1H4 58 - 60 5.11 495.1 3.66 4.061 28.5 871B1H4 61 - 63 5.14 497.38 3.67 4.066 28.5 871B1H4 64 - 66 5.17 499.66 3.49 3.992 28.3 871B1H4 67 - 69 5.2 501.95 3.88 3.929 28.2 871B1H4 70 - 72 5.23 504.23 3.83 3.912 28.1 871B1H4 73 - 75 5.26 506.51 3.76 3.821 27.9 871B1H4 76 - 78 5.29 508.79 4.17 3.752 27.7 871B1H4 79 - 81 5.32 511.07 4.14 3.94 28.2 871B1H4 82 - 84 5.35 513.35 3.85 4.101 28.5 871B1H4 85 - 87 5.38 515.63 4.08 3.981 28.3 871B1H4 88 - 90 5.41 517.91 4.05 3.972 28.3 871B1H4 91 - 93 5.44 520.19 4.15 3.994 28.3 871B1H4 94 - 96 5.47 522.61 3.38 3.768 27.8 871B1H4 97 - 99 5.5 526.25 4.07 3.881 28 871B1H4 100 - 102 5.53 529.88 3.78 3.486 27.1 871B1H4 103 - 105 5.56 533.51 4.29 3.593 27.3 871B1H4 106 - 108 5.59 537.15 4.23 3.528 27.2 871B1H4 109 - 111