Florida Current Planktonic Foraminiferal d18O Data ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!! NAME OF DATA SET: Florida Current Planktonic Foraminiferal d18O Data LAST UPDATE: 2/2006 (Original receipt by WDC Paleo) CONTRIBUTORS: D.C. Lund and W.B. Curry, Woods Hole Oceanographic Institution IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2006-013 SUGGESTED DATA CITATION: Lund, D.C. and W.B. Curry. 2006. Florida Current Planktonic Foraminiferal d18O Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2006-013. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Lund, D.C. and W.B. Curry. 2004. Late Holocene variability in Florida Current surface density: Patterns and possible causes. Paleoceanography, 19, PA4001, doi: 10.1029/2004PA001008. ABSTRACT: Planktonic foraminiferal d18O time series from three well-dated, high sedimentation rate cores near the Florida Keys (24.4N, 83.3W) exhibit repeated centennial to millennial-scale oscillations during the late Holocene. Isotopic shifts of 0.2–0.3% over the past 5200 years represent changes in sea-surface temperature (SST) of 1.0–1.5C or salinity variability of 1–2 psu. The largest significant isotopic events are centered at approximately 200, 2000, 3200, and prior to 4000 calendar years BP. High Florida Current d18O during the Little Ice Age (LIA) correlates with published records of high d18O in the Sargasso Sea and low SST off the coast of west Africa. An interval of generally low d18O in the Florida Straits from 1800 to 500 years BP is synchronous with the Medieval Warm Period off west Africa but leads low d18O in the Sargasso Sea by several hundred years. Synchronous cooling across the subtropical gyre during the LIA is difficult to explain using interannual North Atlantic Oscillation patterns but may be consistent with the simulated effects of reduced solar irradiance. At frequencies between 1/1000 and 1/300 years during the Late Holocene, Florida Current d18O is coherent with a published estimate of 14C production rate. Radiocarbon production seems to lead d18O at these frequencies, but uncertainty in the phase calculation precludes a clear lead-lag relationship. At frequencies lower than 1/300 years, Florida Current d18O is coherent and in phase with atmospheric D14C. The coherence of D14C and d18O at periods >1000 years implies oceanic circulation may play a role in modulating atmospheric radiocarbon on millennial timescales. GEOGRAPHIC REGION: Florida Keys, eastern tropical Atlantic PERIOD OF RECORD: 5200 YBP - present FUNDING SOURCES: NSF grants OCE-9905605 and OCE-0096469. DESCRIPTION: Planktonic foraminiferal d18O time series from two well-dated, high sedimentation rate cores near the Florida Keys. Core C166A-8GGC: 24deg. 39' N, 83deg. 34' W, 435m. depth In the age model file (ggc8_age) there are five columns: depth, raw 14C age, analytical error, calendar age, and species+size fraction. In the planktonic stable isotope data file (ggc8p_ave) there are 6 columns: depth, calendar age, average value at each depth, std deviation, std error, and number of values per depth. In the 100-year smooth file (ggc8p_100) there are 4 columns: age, mean d18O, 95%up, 95%low. The final two columns are the 95% confidence limits on the mean value for each 100-year window. Core W167-79GGC 24deg. 36' N, 83deg. 35' W, 530m. depth In the age model file (ggc79_age) there are five columns: depth, raw 14C age, analytical error, calendar age, and species+size fraction. In the planktonic stable isotope data file (ggc79p_ave) there are 6 columns: depth, calendar age, average value at each depth, std deviation, std error, and number of values per depth. In the 100-year smooth file (ggc79p_100) there are 4 columns: age, mean d18O, 95%up, 95%low. The final two columns are the 95% confidence limits on the mean value for each 100-year window. DATA: 1. Core C166A-8GGC Age Model depth, raw 14C age, analytical error, calendar age, and species+size fraction. Depth C14age error CalAge Species/Size Fraction 1 155 30 1 G. ruber 2 465 40 60 G. sacculifer >250um 27 795 35 447 G. ruber 27 995 35 560 G. sacculifer >250um 27 nan nan 504 average 39 1810 40 1338 G. ruber 39 1390 35 928 G. sacculifer >250um 59 1690 120 1254 G. ruber 59 1130 35 667 G. sacculifer >250um 97 2370 40 1984 G. ruber 97 2240 60 1842 G. sacculifer >250um 97 nan nan 1913 average 151 2920 35 2713 G. ruber 151 3200 40 2985 G. sacculifer >250um 151 nan nan 2849 average 2. Core C166A-8GGC planktonic stable isotopes depth, calendar age, average value at each depth, std deviation, std error, and number of values per depth. Depth cal.age avg.val. std dev. std error Num Vals 1 1.00 -1.43 0.19 0.08 6 3 77.76 -1.34 0.17 0.08 5 5 113.28 -1.33 0.26 0.10 6 7 148.80 -1.27 0.16 0.07 6 9 184.32 -1.23 0.16 0.09 3 11 219.84 -1.18 0.28 0.16 3 13 255.36 -1.49 0.13 0.07 3 15 290.88 -1.41 0.20 0.10 4 17 326.40 -1.37 0.38 0.22 3 19 361.92 -1.37 0.57 0.33 3 21 397.44 -1.34 0.27 0.16 3 22 415.20 -1.41 0.24 0.14 3 23 432.96 -1.24 0.13 0.08 3 24 450.72 -1.38 0.08 0.05 3 25 468.48 -1.45 0.08 0.05 3 26 486.24 -1.40 0.39 0.22 3 27 504.00 -1.46 0.28 0.11 6 28 539.33 -1.47 0.21 0.11 4 29 574.67 -1.46 0.18 0.08 5 30 610.00 -1.44 0.11 0.06 3 31 645.33 -1.55 0.37 0.16 5 32 680.67 -1.43 0.15 0.09 3 33 716.00 -1.52 0.41 0.18 5 35 786.67 -1.50 0.22 0.10 5 37 857.33 -1.48 0.21 0.09 5 39 928.00 -1.54 0.19 0.08 5 41 960.60 -1.53 0.23 0.10 5 43 993.20 -1.39 0.27 0.12 5 45 1025.80 -1.58 0.29 0.17 3 47 1058.40 -1.56 0.22 0.13 3 49 1091.00 -1.75 0.30 0.15 4 51 1123.60 -1.41 0.10 0.06 3 53 1156.20 -1.53 0.14 0.08 3 55 1188.80 -1.52 0.15 0.08 3 57 1221.40 -1.33 0.07 0.04 3 59 1254.00 -1.43 0.19 0.11 3 61 1288.68 -1.35 0.07 0.04 3 63 1323.37 -1.57 0.10 0.06 3 65 1358.05 -1.54 0.06 0.03 3 67 1392.74 -1.52 0.14 0.08 3 69 1427.42 -1.61 0.15 0.08 3 71 1462.11 -1.57 0.12 0.07 3 73 1496.79 -1.46 0.21 0.12 3 75 1531.47 -1.47 0.25 0.14 3 77 1566.16 -1.60 0.22 0.11 4 79 1600.84 -1.40 0.08 0.04 3 81 1635.53 -1.56 0.31 0.18 3 83 1670.21 -1.55 0.12 0.07 3 85 1704.89 -1.49 0.08 0.05 3 87 1739.58 -1.49 0.09 0.05 3 89 1774.26 -1.57 0.04 0.02 3 91 1808.95 -1.27 0.05 0.03 3 93 1843.63 -1.47 0.27 0.15 3 95 1878.32 -1.23 0.12 0.07 3 97 1913.00 -1.31 0.20 0.12 3 99 1947.67 -1.29 0.33 0.19 3 101 1982.33 -1.26 0.32 0.18 3 103 2017.00 -1.37 0.26 0.15 3 105 2051.67 -1.50 0.24 0.14 3 107 2086.33 -1.29 0.05 0.03 3 109 2121.00 -1.49 0.07 0.04 3 111 2155.67 -1.45 0.14 0.08 3 113 2190.33 -1.49 0.15 0.09 3 115 2225.00 -1.40 0.11 0.06 3 117 2259.67 -1.35 0.26 0.15 3 119 2294.33 -1.53 0.22 0.13 3 121 2329.00 -1.61 0.17 0.10 3 123 2363.67 -1.35 0.19 0.11 3 125 2398.33 -1.56 0.01 0.01 3 127 2433.00 -1.38 0.13 0.07 3 129 2467.67 -1.35 0.02 0.01 3 131 2502.33 -1.40 0.34 0.15 5 133 2537.00 -1.30 0.26 0.15 3 135 2571.67 -1.52 0.33 0.19 3 137 2606.33 -1.40 0.10 0.06 3 139 2641.00 -1.29 0.16 0.09 3 141 2675.67 -1.44 0.32 0.18 3 143 2710.33 -1.69 0.10 0.06 3 145 2745.00 -1.56 0.03 0.02 3 147 2779.67 -1.60 0.27 0.15 3 149 2814.33 -1.61 0.16 0.09 3 151 2849.00 -1.62 0.06 0.03 3 3. Core C166A-8GGC 100-year smoothed isotopes age, mean d18O, 95%up, 95%low. The final two columns are the 95% confidence limits on the mean value for each 100-year window. Age Mean d18O 95%up 95%low 51 -1.39 -1.51 -1.27 71 -1.34 -1.48 -1.19 91 -1.34 -1.48 -1.19 111 -1.31 -1.41 -1.21 131 -1.30 -1.43 -1.17 151 -1.29 -1.39 -1.18 171 -1.24 -1.35 -1.13 191 -1.24 -1.35 -1.13 211 -1.30 -1.48 -1.13 231 -1.30 -1.48 -1.13 251 -1.37 -1.53 -1.20 271 -1.44 -1.60 -1.29 291 -1.42 -1.59 -1.26 311 -1.39 -1.64 -1.15 331 -1.39 -1.63 -1.14 351 -1.36 -1.64 -1.08 371 -1.37 -1.58 -1.16 391 -1.34 -1.53 -1.15 411 -1.35 -1.49 -1.20 431 -1.36 -1.45 -1.27 451 -1.37 -1.48 -1.26 471 -1.40 -1.51 -1.29 491 -1.44 -1.54 -1.33 511 -1.45 -1.58 -1.32 531 -1.45 -1.57 -1.34 551 -1.46 -1.58 -1.34 571 -1.46 -1.57 -1.36 591 -1.46 -1.58 -1.33 611 -1.49 -1.64 -1.34 631 -1.49 -1.66 -1.32 651 -1.49 -1.66 -1.32 671 -1.51 -1.71 -1.31 691 -1.51 -1.71 -1.31 711 -1.48 -1.75 -1.21 731 -1.52 -2.02 -1.01 751 -1.51 -1.73 -1.29 771 -1.50 -1.78 -1.22 791 -1.50 -1.78 -1.22 811 -1.49 -1.63 -1.35 831 -1.49 -1.63 -1.35 851 -1.48 -1.74 -1.23 871 -1.48 -1.74 -1.23 891 -1.51 -1.65 -1.38 911 -1.54 -1.68 -1.40 931 -1.54 -1.68 -1.40 951 -1.49 -1.61 -1.36 971 -1.49 -1.61 -1.36 991 -1.49 -1.64 -1.34 1011 -1.49 -1.66 -1.32 1031 -1.49 -1.66 -1.32 1051 -1.64 -1.83 -1.46 1071 -1.64 -1.83 -1.46 1091 -1.59 -1.77 -1.41 1111 -1.58 -1.76 -1.41 1131 -1.58 -1.76 -1.41 1151 -1.49 -1.58 -1.39 1171 -1.49 -1.58 -1.39 1191 -1.46 -1.57 -1.35 1211 -1.43 -1.54 -1.31 1231 -1.43 -1.54 -1.31 1251 -1.37 -1.46 -1.28 1271 -1.37 -1.46 -1.28 1291 -1.45 -1.57 -1.34 1311 -1.49 -1.58 -1.40 1331 -1.49 -1.58 -1.40 1351 -1.54 -1.61 -1.47 1371 -1.54 -1.61 -1.47 1391 -1.56 -1.64 -1.47 1411 -1.56 -1.71 -1.42 1431 -1.57 -1.66 -1.47 1451 -1.55 -1.67 -1.43 1471 -1.55 -1.67 -1.43 1491 -1.50 -1.64 -1.36 1511 -1.50 -1.64 -1.36 1531 -1.52 -1.67 -1.37 1551 -1.50 -1.64 -1.36 1571 -1.50 -1.64 -1.36 1591 -1.53 -1.68 -1.37 1611 -1.53 -1.68 -1.37 1631 -1.50 -1.65 -1.36 1651 -1.55 -1.78 -1.33 1671 -1.53 -1.67 -1.40 1691 -1.51 -1.58 -1.44 1711 -1.51 -1.58 -1.44 1731 -1.52 -1.57 -1.46 1751 -1.52 -1.57 -1.46 1771 -1.44 -1.55 -1.33 1791 -1.42 -1.59 -1.24 1811 -1.44 -1.58 -1.29 1831 -1.32 -1.47 -1.18 1851 -1.32 -1.47 -1.18 1871 -1.34 -1.49 -1.18 1891 -1.34 -1.49 -1.18 1911 -1.28 -1.43 -1.12 1931 -1.30 -1.56 -1.04 1951 -1.29 -1.48 -1.09 1971 -1.31 -1.51 -1.10 1991 -1.31 -1.51 -1.10 2011 -1.38 -1.57 -1.18 2031 -1.38 -1.57 -1.18 2051 -1.39 -1.54 -1.23 2071 -1.39 -1.59 -1.19 2091 -1.43 -1.55 -1.30 2111 -1.41 -1.50 -1.32 2131 -1.41 -1.50 -1.32 2151 -1.48 -1.56 -1.39 2171 -1.48 -1.56 -1.39 2191 -1.45 -1.54 -1.35 2211 -1.41 -1.55 -1.28 2231 -1.41 -1.55 -1.28 2251 -1.43 -1.58 -1.28 2271 -1.43 -1.58 -1.28 2291 -1.50 -1.67 -1.33 2311 -1.57 -1.76 -1.38 2331 -1.50 -1.66 -1.34 2351 -1.51 -1.64 -1.37 2371 -1.51 -1.64 -1.37 2391 -1.43 -1.54 -1.32 2411 -1.43 -1.54 -1.32 2431 -1.43 -1.52 -1.34 2451 -1.36 -1.45 -1.28 2471 -1.38 -1.53 -1.23 2491 -1.36 -1.53 -1.19 2511 -1.36 -1.53 -1.19 2531 -1.40 -1.60 -1.20 2551 -1.40 -1.60 -1.20 2571 -1.41 -1.59 -1.23 2591 -1.46 -1.70 -1.22 2611 -1.40 -1.57 -1.24 2631 -1.38 -1.53 -1.23 2651 -1.38 -1.53 -1.23 2671 -1.47 -1.67 -1.28 2691 -1.47 -1.67 -1.28 2711 -1.56 -1.72 -1.41 2731 -1.62 -1.74 -1.50 2751 -1.62 -1.74 -1.50 2771 -1.59 -1.71 -1.47 2791 -1.59 -1.71 -1.47 4. Core W167-79GGC Age Model depth, raw 14C age, analytical error, calendar age, and species+size fraction. Depth C14age error CalAge Species/Size Fraction 0.5 765 95 424 G. sac >250 0.5 350 40 1 G. rub 4.5 440 35 40 G. sac >250 8.5 995 30 560 G. sac >250 20.5 1270 25 796 G. sac >250 31.25 1730 45 1278 G. sac >250 40.75 1870 30 1403 G. sac >250 54.75 2560 35 2272 G. sac >250 69.5 2800 35 2530 G. sac >250 84.25 3010 30 2759 G. sac >250 99.5 3470 30 3348 G. sac >250 114.5 4190 40 4266 G. sac >250 127.5 4810 45 5049 G. rub 127.5 5030 50 5371 G. sac >250 127.5 nan nan 5210 average 5. Core W167-79GGC planktonic stable isotopes depth, calendar age, average value at each depth, std deviation, std error, and number of values per depth. Depth Cal Age Avg.value Std Dev Std Err NumVals 0.50 1.00 -1.58 0.21 0.12 3 2.00 105.81 -1.60 0.12 0.07 3 3.25 193.16 -1.37 0.24 0.12 4 3.75 228.09 -1.49 0.07 0.04 4 4.25 263.03 -1.37 0.17 0.08 4 4.75 297.97 -1.30 0.25 0.14 3 5.25 332.91 -1.53 0.17 0.08 4 5.75 367.84 -1.45 0.03 0.02 3 6.25 402.78 -1.50 0.04 0.02 4 6.75 437.72 -1.63 0.19 0.10 4 7.25 472.66 -1.69 0.05 0.03 3 7.75 507.59 -1.74 0.19 0.09 4 8.25 542.53 -1.72 0.20 0.10 4 8.75 564.92 -1.48 0.42 0.21 4 9.25 574.75 -1.67 0.25 0.12 4 9.75 584.58 -1.49 0.12 0.06 4 10.25 594.42 -1.67 0.09 0.04 4 10.75 604.25 -1.66 0.02 0.01 4 11.25 614.08 -1.58 0.27 0.13 4 11.75 623.92 -1.61 0.19 0.09 4 12.25 633.75 -1.82 0.33 0.17 4 12.75 643.58 -1.66 0.27 0.14 4 13.25 653.42 -1.72 0.10 0.05 4 13.75 663.25 -1.46 0.13 0.06 4 14.25 673.08 -1.74 0.23 0.14 3 14.75 682.92 -1.76 0.08 0.05 3 15.25 692.75 -1.76 0.13 0.08 3 15.75 702.58 -1.41 0.12 0.07 3 16.25 712.42 -1.56 0.16 0.09 3 16.75 722.25 -1.62 0.05 0.03 3 17.25 732.08 -1.53 0.27 0.16 3 17.75 741.92 -1.52 0.20 0.12 3 18.25 751.75 -1.42 0.13 0.07 3 18.75 761.58 -1.84 0.03 0.02 3 19.25 771.42 -1.48 0.35 0.20 3 19.75 781.25 -1.71 0.14 0.06 5 20.25 791.08 -1.64 0.18 0.07 6 20.75 807.21 -1.68 0.27 0.11 6 21.25 829.63 -1.62 0.20 0.08 6 21.75 852.05 -1.66 0.32 0.13 6 22.25 874.47 -1.68 0.13 0.05 6 22.75 896.88 -1.68 0.11 0.05 4 23.25 919.30 -1.63 0.16 0.09 3 23.75 941.72 -1.83 0.15 0.08 4 24.25 964.14 -1.66 0.20 0.10 4 24.75 986.56 -1.55 0.11 0.06 4 25.25 1008.98 -1.51 0.32 0.16 4 25.75 1031.40 -1.69 0.11 0.05 4 26.25 1053.81 -1.66 0.22 0.11 4 26.75 1076.23 -1.64 0.09 0.05 4 27.25 1098.65 -1.59 0.06 0.03 3 27.75 1121.07 -1.53 0.26 0.13 4 28.25 1143.49 -1.43 0.17 0.08 4 28.75 1165.91 -1.82 0.38 0.19 4 29.25 1188.33 -1.63 0.16 0.08 4 29.75 1210.74 -1.81 0.42 0.21 4 30.25 1233.16 -1.52 0.39 0.17 5 30.75 1255.58 -1.47 0.04 0.02 5 31.25 1278.00 -1.57 0.22 0.10 5 31.75 1284.58 -1.63 0.21 0.09 5 32.25 1291.16 -1.68 0.23 0.13 3 32.75 1297.74 -1.54 0.13 0.07 3 33.25 1304.32 -1.65 0.18 0.11 3 33.75 1310.89 -1.55 0.14 0.08 3 34.25 1317.47 -1.56 0.31 0.18 3 34.75 1324.05 -1.65 0.06 0.03 3 35.25 1330.63 -1.62 0.21 0.12 3 35.75 1337.21 -1.53 0.05 0.03 3 36.25 1343.79 -1.69 0.41 0.24 3 36.75 1350.37 -1.44 0.08 0.05 3 37.25 1356.95 -1.65 0.18 0.10 3 37.75 1363.53 -1.66 0.08 0.04 3 38.25 1370.11 -1.64 0.16 0.09 3 38.75 1376.68 -1.59 0.15 0.09 3 39.25 1383.26 -1.44 0.20 0.12 3 39.75 1389.84 -1.91 0.18 0.10 3 40.25 1396.42 -1.82 0.17 0.09 4 40.75 1403.00 -1.72 0.04 0.02 4 41.25 1434.04 -1.57 0.18 0.09 4 41.75 1465.07 -1.68 0.16 0.08 4 42.25 1496.11 -1.61 0.16 0.08 4 42.75 1527.14 -1.80 0.10 0.05 4 43.25 1558.18 -1.57 0.16 0.08 4 43.75 1589.21 -1.59 0.27 0.14 4 44.25 1620.25 -1.71 0.16 0.08 4 44.75 1651.29 -1.52 0.13 0.06 4 45.25 1682.32 -1.62 0.30 0.15 4 45.75 1713.36 -1.69 0.26 0.13 4 46.25 1744.39 -1.71 0.30 0.15 4 46.75 1775.43 -1.73 0.24 0.12 4 47.25 1806.46 -1.71 0.08 0.04 4 47.75 1837.50 -1.65 0.21 0.10 4 48.25 1868.54 -1.51 0.28 0.14 4 48.75 1899.57 -1.50 0.16 0.08 4 49.25 1930.61 -1.67 0.20 0.10 4 49.75 1961.64 -1.34 0.15 0.09 3 50.25 1992.68 -1.57 0.23 0.12 4 50.75 2023.71 -1.82 0.20 0.10 4 51.25 2054.75 -1.32 0.04 0.02 3 51.75 2085.79 -1.53 0.34 0.17 4 52.25 2116.82 -1.66 0.21 0.11 4 52.75 2147.86 -1.61 0.06 0.03 4 53.25 2178.89 -1.70 0.10 0.05 4 53.75 2209.93 -1.48 0.09 0.04 5 54.25 2240.96 -1.65 0.15 0.06 6 54.75 2272.00 -1.56 0.19 0.08 6 55.25 2280.75 -1.59 0.23 0.10 5 55.75 2289.49 -1.61 0.18 0.10 3 56.25 2298.24 -1.43 0.14 0.06 5 56.75 2306.98 -1.46 0.29 0.13 5 57.25 2315.73 -1.58 0.18 0.08 5 57.75 2324.47 -1.44 0.37 0.21 3 58.25 2333.22 -1.50 0.05 0.03 3 58.75 2341.97 -1.67 0.19 0.09 5 59.25 2350.71 -1.58 0.15 0.08 4 59.75 2359.46 -1.48 0.37 0.18 4 60.25 2368.20 -1.97 0.07 0.04 3 60.75 2376.95 -1.82 0.17 0.10 3 61.25 2385.69 -1.52 0.23 0.13 3 61.75 2394.44 -1.78 0.13 0.08 3 62.25 2403.19 -1.78 0.08 0.05 3 62.75 2411.93 -1.80 0.34 0.20 3 63.25 2420.68 -1.88 0.07 0.04 3 63.75 2429.42 -1.73 0.07 0.04 3 64.25 2438.17 -1.64 0.07 0.04 3 64.75 2446.92 -1.74 0.17 0.10 3 65.25 2455.66 -1.66 0.20 0.11 3 65.75 2464.41 -1.71 0.50 0.29 3 66.25 2473.15 -1.57 0.24 0.14 3 66.75 2481.90 -1.55 0.03 0.02 3 67.25 2490.64 -1.85 0.17 0.10 3 67.75 2499.39 -1.75 0.05 0.03 3 68.25 2508.14 -1.69 0.11 0.06 3 68.75 2516.88 -1.70 0.10 0.06 3 69.25 2525.63 -1.76 0.38 0.22 3 69.75 2533.88 -1.80 0.18 0.11 3 70.25 2541.64 -1.71 0.11 0.06 3 70.75 2549.41 -1.77 0.29 0.17 3 71.25 2557.17 -1.66 0.15 0.08 3 71.75 2564.93 -1.76 0.14 0.08 3 72.25 2572.69 -1.54 0.08 0.05 3 72.75 2580.46 -1.68 0.20 0.12 3 73.25 2588.22 -1.62 0.17 0.10 3 73.75 2595.98 -1.73 0.31 0.18 3 74.25 2603.75 -1.51 0.37 0.21 3 74.75 2611.51 -1.71 0.11 0.06 3 75.25 2619.27 -1.59 0.32 0.18 3 75.75 2627.03 -1.62 0.06 0.04 3 76.25 2634.80 -1.73 0.19 0.11 3 76.75 2642.56 -1.64 0.31 0.18 3 77.25 2650.32 -1.75 0.26 0.15 3 77.75 2658.08 -1.71 0.23 0.13 3 78.25 2665.85 -1.53 0.28 0.16 3 78.75 2673.61 -1.81 0.10 0.06 3 79.25 2681.37 -1.35 0.13 0.07 3 79.75 2689.14 -1.69 0.14 0.08 3 80.25 2696.90 -1.63 0.25 0.14 3 80.75 2704.66 -1.72 0.42 0.24 3 81.25 2712.42 -1.75 0.05 0.03 3 81.75 2720.19 -1.66 0.37 0.21 3 82.25 2727.95 -1.60 0.15 0.09 3 82.75 2735.71 -1.80 0.26 0.15 3 83.25 2743.47 -1.68 0.23 0.14 3 83.75 2751.24 -1.72 0.08 0.04 4 84.25 2759.00 -1.82 0.32 0.16 4 84.75 2778.31 -1.74 0.05 0.03 3 85.25 2797.62 -1.92 0.28 0.14 4 85.75 2816.93 -1.77 0.15 0.09 3 86.25 2836.25 -1.87 0.05 0.02 4 86.75 2855.56 -1.81 0.22 0.11 4 87.25 2874.87 -1.81 0.14 0.07 4 87.75 2894.18 -1.89 0.20 0.10 4 88.25 2913.49 -1.76 0.27 0.14 4 88.75 2932.80 -1.81 0.18 0.09 4 89.25 2952.11 -1.57 0.27 0.14 4 89.75 2971.43 -1.81 0.28 0.16 3 90.25 2990.74 -1.66 0.24 0.12 4 90.75 3010.05 -1.87 0.22 0.11 4 91.25 3029.36 -1.58 0.18 0.08 5 91.75 3048.67 -1.76 0.11 0.06 4 92.25 3067.98 -1.83 0.11 0.05 4 92.75 3087.30 -1.67 0.18 0.09 4 93.25 3106.61 -1.72 0.11 0.06 4 93.75 3125.92 -1.64 0.12 0.06 4 94.25 3145.23 -1.62 0.07 0.04 4 94.75 3164.54 -1.84 0.10 0.05 4 95.25 3183.85 -1.61 0.09 0.05 4 95.75 3203.16 -1.74 0.32 0.16 4 96.25 3222.48 -1.80 0.19 0.09 4 96.75 3241.79 -1.67 0.03 0.02 4 97.25 3261.10 -1.55 0.13 0.07 4 97.75 3280.41 -1.71 0.19 0.10 4 98.25 3299.72 -1.75 0.21 0.10 4 98.75 3319.03 -1.83 0.28 0.14 4 99.25 3338.34 -1.67 0.11 0.05 4 99.75 3363.30 -1.67 0.51 0.25 4 100.25 3393.90 -1.61 0.11 0.05 4 100.75 3424.50 -1.70 0.29 0.14 4 101.25 3455.10 -1.68 0.12 0.06 4 101.75 3485.70 -1.93 0.19 0.10 4 102.25 3516.30 -1.67 0.25 0.12 4 102.75 3546.90 -1.70 0.29 0.14 4 103.25 3577.50 -1.90 0.12 0.06 4 103.75 3608.10 -1.87 0.03 0.02 4 104.25 3638.70 -1.63 0.17 0.10 3 104.75 3669.30 -1.73 0.08 0.04 4 105.25 3699.90 -1.71 0.16 0.08 4 105.75 3730.50 -1.68 0.29 0.15 4 106.25 3761.10 -1.62 0.11 0.05 4 106.75 3791.70 -1.72 0.14 0.07 4 107.25 3822.30 -1.68 0.22 0.11 4 107.75 3852.90 -1.83 0.19 0.09 4 108.25 3883.50 -1.53 0.13 0.06 4 108.75 3914.10 -1.71 0.09 0.05 4 109.25 3944.70 -1.55 0.24 0.12 4 109.75 3975.30 -1.65 0.26 0.13 4 110.25 4005.90 -1.53 0.19 0.09 4 110.75 4036.50 -1.74 0.17 0.09 4 111.25 4067.10 -1.59 0.18 0.09 4 111.75 4097.70 -1.50 0.31 0.15 4 112.25 4128.30 -1.44 0.13 0.06 4 112.75 4158.90 -1.53 0.13 0.07 4 113.25 4189.50 -1.63 0.20 0.10 4 113.75 4220.10 -1.73 0.31 0.15 4 114.25 4250.70 -1.75 0.28 0.14 4 114.75 4284.15 -1.43 0.12 0.06 4 115.25 4320.46 -1.54 0.22 0.11 4 115.75 4356.77 -1.59 0.09 0.04 4 116.25 4393.08 -1.56 0.14 0.07 4 116.75 4429.38 -1.60 0.22 0.11 4 117.25 4465.69 -1.53 0.17 0.09 4 117.75 4502.00 -1.43 0.23 0.11 4 118.25 4538.31 -1.74 0.10 0.05 4 118.75 4574.62 -1.54 0.19 0.09 4 119.25 4610.92 -1.77 0.15 0.07 4 119.75 4647.23 -1.55 0.15 0.07 4 120.25 4683.54 -1.72 0.12 0.06 4 120.75 4719.85 -1.62 0.27 0.14 4 121.25 4756.15 -1.50 0.20 0.10 4 121.75 4792.46 -1.64 0.18 0.09 4 122.25 4828.77 -1.50 0.20 0.10 4 122.75 4865.08 -1.44 0.40 0.20 4 123.25 4901.38 -1.50 0.24 0.12 4 123.75 4937.69 -1.84 0.11 0.07 3 124.25 4974.00 -1.71 0.50 0.29 3 124.75 5010.31 -1.56 0.16 0.08 4 125.25 5046.62 -1.51 0.25 0.12 4 125.75 5082.92 -1.57 0.08 0.04 4 126.25 5119.23 -1.42 0.20 0.10 4 126.75 5155.54 -1.66 0.18 0.09 4 127.50 5210.00 -1.59 0.20 0.10 4 6. Core W167-79GGC 100-year smoothed isotopes age, mean d18O, 95%up, 95%low. The final two columns are the 95% confidence limits on the mean value for each 100-year window. Age Mean d18O 95%up 95%low 51 -1.58 -2.09 -1.07 71 -1.60 -1.89 -1.30 91 -1.60 -1.89 -1.30 111 -1.60 -1.89 -1.30 131 -1.60 -1.89 -1.30 151 -1.46 -1.67 -1.26 171 -1.37 -1.75 -0.98 191 -1.43 -1.58 -1.28 211 -1.43 -1.58 -1.28 231 -1.41 -1.52 -1.30 251 -1.40 -1.51 -1.28 271 -1.40 -1.51 -1.28 291 -1.41 -1.54 -1.28 311 -1.41 -1.54 -1.28 331 -1.44 -1.56 -1.31 351 -1.49 -1.61 -1.37 371 -1.50 -1.56 -1.43 391 -1.53 -1.63 -1.44 411 -1.53 -1.63 -1.44 431 -1.60 -1.69 -1.51 451 -1.60 -1.69 -1.51 471 -1.69 -1.79 -1.58 491 -1.72 -1.84 -1.59 511 -1.72 -1.82 -1.61 531 -1.65 -1.80 -1.50 551 -1.63 -1.73 -1.53 571 -1.61 -1.70 -1.52 591 -1.63 -1.71 -1.55 611 -1.64 -1.71 -1.56 631 -1.64 -1.70 -1.57 651 -1.67 -1.74 -1.60 671 -1.65 -1.72 -1.58 691 -1.62 -1.69 -1.55 711 -1.57 -1.64 -1.50 731 -1.59 -1.67 -1.51 751 -1.59 -1.66 -1.52 771 -1.62 -1.69 -1.55 791 -1.63 -1.70 -1.56 811 -1.66 -1.74 -1.58 831 -1.67 -1.74 -1.59 851 -1.66 -1.75 -1.58 871 -1.66 -1.74 -1.58 891 -1.67 -1.76 -1.57 911 -1.71 -1.78 -1.63 931 -1.70 -1.79 -1.61 951 -1.67 -1.77 -1.57 971 -1.64 -1.76 -1.52 991 -1.65 -1.74 -1.55 1011 -1.61 -1.70 -1.52 1031 -1.61 -1.69 -1.52 1051 -1.62 -1.70 -1.53 1071 -1.65 -1.72 -1.58 1091 -1.60 -1.70 -1.51 1111 -1.54 -1.64 -1.45 1131 -1.59 -1.74 -1.44 1151 -1.60 -1.74 -1.46 1171 -1.64 -1.78 -1.50 1191 -1.64 -1.79 -1.48 1211 -1.63 -1.77 -1.50 1231 -1.59 -1.71 -1.47 1251 -1.59 -1.69 -1.50 1271 -1.57 -1.64 -1.50 1291 -1.58 -1.64 -1.53 1311 -1.60 -1.65 -1.54 1331 -1.61 -1.66 -1.55 1351 -1.63 -1.69 -1.57 1371 -1.65 -1.71 -1.59 1391 -1.65 -1.72 -1.58 1411 -1.67 -1.75 -1.60 1431 -1.69 -1.78 -1.60 1451 -1.65 -1.72 -1.57 1471 -1.62 -1.72 -1.52 1491 -1.70 -1.80 -1.60 1511 -1.67 -1.75 -1.58 1531 -1.66 -1.77 -1.55 1551 -1.65 -1.78 -1.52 1571 -1.67 -1.77 -1.56 1591 -1.62 -1.75 -1.50 1611 -1.61 -1.73 -1.48 1631 -1.61 -1.73 -1.48 1651 -1.62 -1.75 -1.49 1671 -1.61 -1.76 -1.47 1691 -1.61 -1.76 -1.47 1711 -1.68 -1.84 -1.51 1731 -1.69 -1.82 -1.56 1751 -1.71 -1.87 -1.56 1771 -1.72 -1.85 -1.59 1791 -1.70 -1.81 -1.59 1811 -1.70 -1.81 -1.59 1831 -1.62 -1.75 -1.49 1851 -1.59 -1.70 -1.48 1871 -1.55 -1.69 -1.42 1891 -1.56 -1.70 -1.42 1911 -1.56 -1.70 -1.42 1931 -1.52 -1.66 -1.38 1951 -1.54 -1.70 -1.39 1971 -1.54 -1.70 -1.39 1991 -1.60 -1.78 -1.42 2011 -1.54 -1.69 -1.39 2031 -1.59 -1.77 -1.41 2051 -1.58 -1.78 -1.37 2071 -1.60 -1.75 -1.45 2091 -1.52 -1.69 -1.34 2111 -1.60 -1.74 -1.46 2131 -1.62 -1.73 -1.52 2151 -1.66 -1.74 -1.57 2171 -1.59 -1.66 -1.51 2191 -1.61 -1.67 -1.55 2211 -1.61 -1.69 -1.53 2231 -1.57 -1.65 -1.50 2251 -1.55 -1.62 -1.49 2271 -1.55 -1.62 -1.49 2291 -1.52 -1.59 -1.45 2311 -1.54 -1.60 -1.48 2331 -1.58 -1.66 -1.50 2351 -1.61 -1.69 -1.53 2371 -1.68 -1.76 -1.59 2391 -1.71 -1.78 -1.64 2411 -1.76 -1.82 -1.69 2431 -1.71 -1.79 -1.63 2451 -1.72 -1.79 -1.65 2471 -1.69 -1.76 -1.62 2491 -1.71 -1.78 -1.63 2511 -1.71 -1.78 -1.64 2531 -1.71 -1.77 -1.66 2551 -1.70 -1.77 -1.64 2571 -1.68 -1.75 -1.61 2591 -1.67 -1.73 -1.60 2611 -1.66 -1.73 -1.59 2631 -1.66 -1.74 -1.59 2651 -1.64 -1.71 -1.56 2671 -1.66 -1.74 -1.59 2691 -1.67 -1.74 -1.59 2711 -1.68 -1.75 -1.60 2731 -1.68 -1.76 -1.61 2751 -1.75 -1.83 -1.66 2771 -1.76 -1.84 -1.68 2791 -1.79 -1.87 -1.71 2811 -1.83 -1.91 -1.74 2831 -1.84 -1.92 -1.75 2851 -1.83 -1.90 -1.76 2871 -1.83 -1.91 -1.74 2891 -1.81 -1.90 -1.73 2911 -1.77 -1.87 -1.66 2931 -1.76 -1.88 -1.65 2951 -1.72 -1.83 -1.60 2971 -1.74 -1.86 -1.63 2991 -1.69 -1.80 -1.57 3011 -1.72 -1.83 -1.62 3031 -1.73 -1.82 -1.64 3051 -1.73 -1.82 -1.65 3071 -1.70 -1.77 -1.63 3091 -1.72 -1.78 -1.66 3111 -1.69 -1.76 -1.63 3131 -1.70 -1.76 -1.63 3151 -1.68 -1.74 -1.63 3171 -1.69 -1.77 -1.61 3191 -1.72 -1.81 -1.64 3211 -1.73 -1.82 -1.65 3231 -1.68 -1.76 -1.60 3251 -1.71 -1.79 -1.62 3271 -1.72 -1.80 -1.64 3291 -1.70 -1.77 -1.62 3311 -1.70 -1.80 -1.61 3331 -1.73 -1.89 -1.58 3351 -1.70 -1.85 -1.55 3371 -1.65 -1.83 -1.48 3391 -1.66 -1.86 -1.46 3411 -1.67 -1.81 -1.52 3431 -1.66 -1.78 -1.55 3451 -1.77 -1.91 -1.63 3471 -1.75 -1.87 -1.62 3491 -1.76 -1.90 -1.62 3511 -1.77 -1.93 -1.61 3531 -1.80 -1.92 -1.68 3551 -1.76 -1.91 -1.61 3571 -1.82 -1.94 -1.70 3591 -1.78 -1.89 -1.67 3611 -1.81 -1.92 -1.71 3631 -1.75 -1.84 -1.66 3651 -1.74 -1.82 -1.67 3671 -1.69 -1.78 -1.61 3691 -1.71 -1.82 -1.59 3711 -1.71 -1.82 -1.59 3731 -1.67 -1.79 -1.55 3751 -1.67 -1.79 -1.56 3771 -1.67 -1.79 -1.56 3791 -1.67 -1.77 -1.58 3811 -1.71 -1.80 -1.62 3831 -1.75 -1.86 -1.63 3851 -1.68 -1.81 -1.55 3871 -1.69 -1.79 -1.59 3891 -1.69 -1.80 -1.57 3911 -1.59 -1.70 -1.49 3931 -1.61 -1.71 -1.51 3951 -1.63 -1.76 -1.51 3971 -1.58 -1.71 -1.44 3991 -1.62 -1.73 -1.50 4011 -1.64 -1.77 -1.51 4031 -1.62 -1.74 -1.50 4051 -1.59 -1.70 -1.47 4071 -1.61 -1.75 -1.46 4091 -1.51 -1.64 -1.38 4111 -1.51 -1.61 -1.41 4131 -1.49 -1.61 -1.37 4151 -1.53 -1.63 -1.43 4171 -1.58 -1.70 -1.47 4191 -1.63 -1.77 -1.49 4211 -1.70 -1.86 -1.55 4231 -1.70 -1.86 -1.55 4251 -1.64 -1.81 -1.46 4271 -1.57 -1.72 -1.42 4291 -1.57 -1.72 -1.42 4311 -1.52 -1.62 -1.42 4331 -1.52 -1.62 -1.42 4351 -1.56 -1.65 -1.47 4371 -1.57 -1.67 -1.48 4391 -1.58 -1.68 -1.49 4411 -1.58 -1.73 -1.44 4431 -1.57 -1.67 -1.46 4451 -1.57 -1.73 -1.41 4471 -1.52 -1.65 -1.40 4491 -1.57 -1.70 -1.44 4511 -1.57 -1.70 -1.44 4531 -1.57 -1.70 -1.44 4551 -1.57 -1.70 -1.44 4571 -1.68 -1.79 -1.57 4591 -1.65 -1.82 -1.49 4611 -1.62 -1.73 -1.50 4631 -1.66 -1.81 -1.51 4651 -1.68 -1.78 -1.58 4671 -1.63 -1.75 -1.51 4691 -1.63 -1.75 -1.51 4711 -1.61 -1.74 -1.48 4731 -1.61 -1.74 -1.48 4751 -1.59 -1.72 -1.45 4771 -1.57 -1.73 -1.41 4791 -1.55 -1.67 -1.43 4811 -1.57 -1.73 -1.41 4831 -1.52 -1.69 -1.35 4851 -1.47 -1.71 -1.22 4871 -1.48 -1.65 -1.31 4891 -1.57 -1.78 -1.36 4911 -1.57 -1.78 -1.36 4931 -1.66 -1.89 -1.44 4951 -1.66 -1.89 -1.44 4971 -1.69 -1.89 -1.49 4991 -1.63 -1.92 -1.33 5011 -1.58 -1.78 -1.39 5031 -1.54 -1.70 -1.37 5051 -1.55 -1.65 -1.44 5071 -1.50 -1.62 -1.38 5091 -1.50 -1.62 -1.38 5111 -1.55 -1.66 -1.44 5131 -1.55 -1.66 -1.44 5151 -1.54 -1.72 -1.36