EDML-Talos Dome Antarctic Ice Core 38-115KYrBP CO2 Data ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: Please cite original reference when using these data, plus the data file URL and date accessed. NAME OF DATA SET: EDML-Talos Dome Antarctic Ice Core 38-115KYrBP CO2 Data LAST UPDATE: 6/2012 (Original receipt by WDC Paleo) CONTRIBUTORS: Bereiter, B., D. Lüthi, M. Siegrist, S. Schüpbach, T.F. Stocker, and H. Fischer IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2012-078 WDC PALEO CONTRIBUTION SERIES CITATION: Bereiter, B., et al. 2012. EDML-Talos Dome Antarctic Ice Core 38-115KYrBP CO2 Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2012-078. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Bereiter, B., D. Lüthi, M. Siegrist, S. Schüpbach, T.F. Stocker, and H. Fischer. 2012. Mode change of millennial CO2 variability during the last glacial cycle associated with a bipolar marine carbon seesaw. Proceedings of the National Academy of Sciences, published ahead of print June 6, 2012, doi:10.1073/pnas.1204069109 ABSTRACT: Important elements of natural climate variations during the last ice age are abrupt temperature increases over Greenland and related warming and cooling periods over Antarctica. Records from Antarctic ice cores have shown that the global carbon cycle also plays a role in these changes. The available data shows that atmospheric CO2 follows closely temperatures reconstructed from Antarctic ice cores during these variations. Here, we present new high-resolution CO2 data from Antarctic ice cores, which cover the period between 115,000 and 38,000 y before present. Our measurements show that also smaller Antarctic warming events have an imprint in CO2 concentrations. Moreover, they indicate that during Marine Isotope Stage (MIS) 5, the peak of millennial CO2 variations lags the onset of Dansgaard/ Oeschger warmings by 250 +/- 190 y. During MIS 3, this lag increases significantly to 870 +/- 90 y. Considerations of the ocean circulation suggest that the millennial variability associated with the Atlantic Meridional Overturning Circulation (AMOC) undergoes a mode change from MIS 5 to MIS 4 and 3. Ocean carbon inventory estimates imply that during MIS 3 additional carbon is derived from an extended mass of carbon-enriched Antarctic Bottom Water. The absence of such a carbon-enriched water mass in the North Atlantic during MIS 5 can explain the smaller amount of carbon released to the atmosphere after the Antarctic temperature maximum and, hence, the shorter lag. Our new data provides further constraints for transient coupled carbon cycle-climate simulations during the entire last glacial cycle. GEOGRAPHIC REGION: Antarctica PERIOD OF RECORD: 38 - 115 KYrBP FUNDING SOURCES: European Project for Ice Coring in Antarctica (EPICA), TALos Dome Ice CorE (TALDICE) project, Swiss National Science Foundation, University of Bern, Prince Albert II of Monaco Foundation. DATA FILE URLS: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/edml-talos2012co2.txt ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/edml-talos2012co2.xls DESCRIPTION: High-resolution Carbon Dioxide (CO2) data from two Antarctic ice cores, covering the period between 115,000 and 38,000 years before present. EPICA Dronning Maud Land Ice Core: 75°00'S, 00°04'E, 2892 m elevation TALDICE Talos Dome Ice Core: 72°49'S, 159°11'E, 2315 m elevation DATA: 1. Talos Dome 35-68 KYrBP Bereiter et al. (2012) Column 1: Depth (m) Column 2: TALDICE-1a gas age (yr BP) Column 3: EDML1_Sc4 gas age (yr BP) Column 4: CO2(ppmv) Column 5: sigma(ppmv) Depth(m) AgeTALDICE AgeEDML CO2(ppmv) sigma(ppmv) 1009.64 34167 34164.8 152.7 4.5 1017.91 35018 34741.7 176.4 12.7 1025.91 35522 35326.0 203.4 10.4 1033.92 36160 36028.3 184.0 16.9 1041.89 36821 36693.0 204.9 6.7 1047.08 37222 37077.3 220.3 9.4 1049.91 37419 37286.5 205.9 3.8 1057.91 38051 37878.3 214.1 3.3 1059.52 38148 38000.9 208.9 5.9 1061.30 38251 38146.6 209.2 3.0 1063.45 38358 38323.0 209.2 2.3 1065.87 38448 38521.5 210.8 1.2 1067.05 38497 38618.3 209.5 1.2 1069.25 38585 38798.8 207.4 2.3 1071.14 38659 38953.9 208.8 1.3 1073.89 38949 39179.7 210.7 1.3 1075.45 39121 39307.5 203.8 1.4 1077.30 39312 39459.3 204.8 1.6 1079.55 39536 39643.9 200.1 1.2 1081.87 39758 39834.1 199.8 0.8 1083.50 39885 39968.1 197.1 0.9 1085.30 40019 40116.1 195.9 1.6 1087.50 40191 40297.0 197.9 1.4 1089.89 40389 40493.8 201.3 1.4 1091.05 40485 40589.0 201.5 1.1 1093.25 40685 40769.9 200.5 0.7 1095.14 40856 40982.4 201.0 1.9 1097.89 41310 41492.7 201.5 1.9 1099.33 41579 41651.2 204.2 1.5 1103.58 41860 41871.1 205.5 1.0 1105.33 41921 41961.6 201.1 1.0 1107.09 41978 42052.8 199.9 1.4 1111.53 42064 42282.6 200.9 1.2 1115.03 42395 42688.6 204.8 0.2 1117.93 42722 43060.3 206.4 1.1 1119.08 42868 43208.7 204.3 0.8 1121.33 43122 43495.8 203.2 1.4 1123.53 43321 43777.7 201.7 1.8 1125.65 43524 44018.7 204.2 0.9 1127.57 43701 44147.7 203.2 1.1 1129.33 43847 44265.4 201.7 1.1 1132.52 44122 44480.1 204.3 0.9 1133.93 44250 44574.6 202.0 0.5 1135.48 44399 44678.7 206.2 1.9 1137.28 44571 44799.7 204.8 1.3 1139.05 44735 44919.0 212.3 0.8 1141.28 44936 45069.1 210.4 0.6 1143.53 45138 45215.8 211.5 0.3 1145.33 45298 45328.8 208.0 0.7 1147.53 45461 45466.9 213.9 0.8 1149.92 45630 45617.5 214.5 0.8 1153.28 45922 45827.8 217.5 2.2 1155.53 46111 45969.3 222.7 0.3 1157.92 46313 46119.7 221.8 1.7 1159.43 46434 46213.8 219.2 1.2 1161.33 46576 46333.1 218.3 1.4 1165.93 46883 46621.9 216.4 1.4 1167.53 46988 46722.3 214.2 1.0 1169.28 47117 46832.1 210.8 1.5 1171.48 47281 46994.4 210.3 0.5 1173.68 47477 47238.9 207.6 1.2 1175.57 47653 47448.0 204.3 1.0 1177.28 47808 47636.2 203.8 0.4 1179.52 48026 47885.2 205.7 1.0 1181.92 48260 48150.8 206.2 2.0 1183.48 48414 48322.4 201.0 0.6 1187.58 48861 48776.1 201.6 0.9 1189.93 49119 49036.3 200.1 0.4 1191.06 49244 49161.3 204.1 1.2 1193.33 49486 49412.4 203.9 1.3 1195.53 49715 49655.9 204.4 1.6 1197.35 49907 49857.5 206.7 0.5 1199.58 50146 50104.1 207.4 0.5 1203.53 50580 50541.7 207.6 0.9 1206.58 50917 50893.2 211.6 0.4 1209.28 51224 51217.0 215.1 1.8 1211.58 51485 51492.9 213.8 0.7 1213.93 51762 51774.8 219.1 0.3 1215.53 51942 51967.3 220.7 0.4 1217.28 52149 52176.6 221.1 1.1 1219.53 52425 52446.4 223.7 1.7 1221.65 52693 52701.9 223.3 0.9 1224.58 53064 53052.2 221.1 1.5 1227.53 53429 53406.1 220.4 0.9 1229.28 53650 53627.7 218.0 1.8 1231.48 53950 53944.2 213.9 1.1 1233.65 54269 54257.7 216.9 0.6 1235.58 54557 54534.1 208.2 0.7 1237.33 54832 54785.8 214.8 0.5 1239.53 55177 55102.5 210.3 1.2 1241.92 55485 55564.7 207.7 0.8 1243.48 55689 55869.5 212.4 0.7 1247.58 56250 56493.1 215.7 0.6 1249.23 56484 56692.5 217.4 2.5 1251.53 56817 56971.0 223.7 0.5 1253.92 57172 57260.5 224.4 0.8 1255.48 57405 57447.9 223.1 1.2 1259.58 58112 58173.4 231.3 0.1 1261.28 58396 58474.7 226.4 1.4 1263.52 58785 58885.3 223.5 0.7 1266.43 59366 59498.7 227.1 1.0 1267.48 59577 59718.0 222.3 0.5 1269.33 59955 60107.9 221.0 0.8 1271.58 60422 60582.2 215.8 0.4 1273.93 60918 61077.8 212.0 0.6 1275.53 61261 61414.8 209.8 0.8 1281.48 62578 62668.6 199.5 1.1 1283.58 63061 63111.3 197.7 0.5 1285.28 63459 63469.5 203.6 1.6 1287.50 63992 64159.4 205.7 1.4 1289.89 64749 65009.5 205.3 2.4 1291.43 65274 65554.8 199.1 0.9 1293.23 65900 66194.7 196.8 0.6 1295.58 66737 67030.4 202.5 0.7 1297.93 67597 67866.0 208.2 1.3 1299.53 68206 68436.3 207.7 1.1 2. EDML (49-115 kyr BP) Bereiter et al. (2012) [1], Lüthi et al. (2011) [2] Column 1: Depth (m) Column 2: EDML1_Sc4 gas age (yr) Column 3: CO2(ppmv) Column 4: sigma(ppmv) Column 5: Reference Bereiter et al. (2012) = [1], Lüthi et al. (2011) = [2] Depth(m) AgeEDML1_Sc4 CO2(ppmv) sigma(ppmv) Reference 1435.62 43602.4 193.8 1.5 2 1444.57 44173.0 199.3 1.6 2 1447.64 44363.2 188.6 3.2 2 1455.61 44878.1 200.0 1.7 2 1459.65 45158.1 212.4 0.7 2 1466.58 45605.6 209.1 2.6 2 1471.64 45902.5 212.0 1.1 2 1480.59 46419.2 217.6 2.2 2 1483.64 46600.1 207.4 0.6 2 1491.41 46984.1 206.8 1.3 2 1495.64 47170.2 199.7 4.5 2 1503.59 47565.5 205.3 1.3 2 1508.63 47868.6 200.3 1.8 2 1515.50 48332.0 199.1 0.7 2 1518.57 48511.2 193.6 1.5 2 1526.58 49015.7 199.4 1.0 2 1531.77 49331.6 202.4 1.3 2 1538.60 49736.8 200.3 0.9 2 1543.57 50107.5 202.8 1.5 2 1550.59 50585.7 205.9 2.3 2 1556.57 50951.4 205.3 2.4 2 1563.91 51390.1 210.4 2.3 2 1567.63 51599.7 210.7 1.6 2 1569.95 51731.8 213.8 1.6 2 1575.90 52089.3 218.0 3.6 2 1580.64 52364.2 218.2 2.1 2 1581.94 52440.6 215.9 1.3 2 1587.92 52786.0 220.4 0.5 2 1590.63 52933.5 219.0 3.5 2 1593.97 53132.1 218.4 2.8 2 1600.91 53511.4 212.7 2.5 2 1602.63 53612.9 214.5 1.8 2 1605.97 53801.4 211.9 1.6 2 1611.92 54161.4 208.7 0.9 2 1615.63 54381.7 209.4 1.9 2 1617.97 54526.7 209.7 0.7 2 1623.88 54899.7 209.5 1.1 2 1628.64 55202.5 203.4 1.7 2 1629.95 55288.2 205.0 0.3 2 1636.92 55744.5 205.4 0.5 2 1639.63 55939.1 203.7 2.3 2 1641.97 56090.7 208.2 0.7 2 1647.88 56474.4 210.7 0.8 2 1652.64 56779.3 217.8 1.4 2 1653.95 56867.8 214.2 0.8 2 1659.92 57230.2 219.0 1.0 2 1664.64 57513.8 218.4 0.6 2 1665.94 57591.0 225.7 1.0 2 1670.90 57883.7 218.4 0.6 2 1675.58 58147.1 221.6 2.8 2 1677.95 58276.3 226.8 3.7 2 1683.92 58588.2 223.4 1.0 2 1688.64 58845.9 221.8 1.2 2 1689.94 58911.2 223.9 2.6 2 1695.92 59225.8 216.7 0.8 2 1700.63 59489.3 212.9 0.7 2 1702.97 59622.6 217.3 0.6 2 1707.92 59902.7 213.8 1.4 2 1711.63 60114.8 208.0 1.3 2 1713.94 60270.0 210.6 1.0 2 1718.92 60599.4 210.9 0.7 2 1723.63 60931.7 206.4 1.2 2 1731.92 61534.0 202.6 0.9 2 1734.80 61763.4 202.7 2.3 2 1736.95 61946.5 200.1 0.6 2 1743.97 62480.9 197.4 1.2 2 1747.63 62742.8 197.2 0.8 1 1749.97 62924.5 199.7 1.3 1 1755.97 63379.9 203.7 0.5 1 1758.63 63590.2 201.7 1.2 1 1760.93 63750.8 199.2 0.7 1 1767.98 64253.2 209.0 3.3 1 1770.63 64446.4 198.2 0.7 1 1772.93 64619.8 200.6 1.5 1 1779.97 65145.1 204.4 2.9 1 1786.97 65711.6 207.2 1.7 1 1791.98 66072.7 201.1 2.0 1 1797.97 66505.7 203.8 1.1 1 1803.98 66940.9 200.2 1.6 1 1809.96 67377.7 203.4 0.6 1 1815.98 67819.5 205.4 0.9 1 1821.97 68224.7 211.3 1.1 1 1828.90 68724.3 215.6 1.8 1 1833.95 69122.8 220.3 0.5 1 1840.90 69628.0 225.2 1.4 1 1845.97 69983.4 235.0 1.2 1 1851.90 70356.3 237.6 0.8 1 1857.94 70768.5 239.5 0.9 1 1863.90 71167.0 232.8 0.9 1 1869.94 71597.5 232.3 1.0 1 1875.91 72060.7 230.9 2.1 1 1882.94 72647.1 232.7 0.9 1 1888.91 73063.0 231.3 0.7 1 1892.94 73346.3 241.2 1.0 1 1899.90 73769.0 243.3 1.6 1 1906.97 74174.7 249.5 0.7 1 1911.90 74463.5 249.9 0.6 1 1917.94 74852.3 239.3 1.1 1 1923.90 75250.5 238.0 2.0 1 1928.94 75627.7 231.7 1.5 1 1935.90 76177.6 224.9 1.3 1 1941.97 76658.0 226.6 0.8 1 1947.90 77112.0 224.1 0.6 1 1953.94 77597.1 227.3 0.6 1 1959.90 78106.1 229.3 1.3 1 1965.97 78625.0 234.7 0.7 1 1971.90 79167.3 230.6 0.6 1 1976.94 79633.1 233.9 1.5 1 1983.90 80279.7 230.3 0.8 1 1990.94 80935.8 234.1 1.2 1 1995.90 81395.6 238.9 0.9 1 2001.97 81937.8 240.9 1.6 1 2007.90 82453.4 246.3 0.7 1 2014.97 83053.9 247.1 1.0 1 2019.90 83454.2 250.8 0.8 1 2024.96 83855.6 243.2 0.8 1 2031.90 84410.5 238.4 1.1 1 2036.94 84815.4 234.7 0.6 1 2042.90 85297.5 228.8 1.6 1 2049.97 85886.2 223.4 0.7 1 2055.90 86428.2 221.1 2.3 1 2061.95 87009.1 223.6 0.9 1 2067.90 87604.1 217.8 1.6 1 2073.97 88185.9 224.0 0.5 1 2079.90 88756.9 227.4 1.1 1 2084.94 89196.8 228.9 0.6 1 2091.90 89830.2 229.7 1.3 1 2097.94 90409.8 231.6 0.6 1 2103.89 90981.5 231.1 0.6 1 2108.89 91482.9 233.7 1.1 1 2115.90 92314.7 232.5 2.2 1 2122.97 93256.9 235.2 0.8 1 2126.90 93695.7 238.2 0.8 1 2133.97 94423.7 242.4 0.5 1 2139.90 95093.1 242.9 1.1 1 2145.97 95826.5 246.2 1.5 1 2150.90 96375.6 245.8 0.6 1 2157.89 97143.6 242.4 2.0 1 2163.90 97827.1 239.9 0.4 1 2169.89 98530.2 243.2 0.2 1 2176.90 99285.2 243.0 1.0 1 2182.97 100003.0 245.6 1.1 1 2186.90 100485.9 247.9 1.1 1 2193.94 101471.7 244.8 1.1 1 2199.90 102347.7 240.1 0.9 1 2206.97 103346.6 237.1 1.8 1 2210.90 103960.9 240.7 0.9 1 2217.94 105073.7 247.8 0.8 1 2223.90 106013.2 251.6 0.9 1 2228.93 106781.0 262.7 1.4 1 2236.90 107895.2 241.6 1.5 1 2241.95 108755.0 239.8 1.3 1 2247.91 109776.6 245.2 2.1 1 2252.95 110584.8 251.7 1.9 1 2259.91 111818.1 254.0 1.6 1 2265.95 112685.6 263.9 0.7 1 2271.61 113400.7 268.7 0.6 1 2277.98 114193.5 276.1 0.6 1 3. Talos Dome and EDML (38-115 kyr BP) Bereiter et al. (2012) 38-58 kyr Talos Dome 59-115 EDML Column 1: EDML1_Sc4 gas age (yr) Column 2: CO2(ppmv) Column 3: sigma(ppmv) Age_EDML1_Sc4 CO2(ppmv) sigma(ppmv) 38521.5 210.8 1.2 38618.3 209.5 1.2 38798.8 207.4 2.3 38953.9 208.8 1.3 39179.7 210.7 1.3 39307.5 203.8 1.4 39459.3 204.8 1.6 39643.9 200.1 1.2 39834.1 199.8 0.8 39968.1 197.1 0.9 40116.1 195.9 1.6 40297.0 197.9 1.4 40493.8 201.3 1.4 40589.0 201.5 1.1 40769.9 200.5 0.7 40982.4 201.0 1.9 41492.7 201.5 1.9 41651.2 204.2 1.5 41871.1 205.5 1.0 41961.6 201.1 1.0 42052.8 199.9 1.4 42282.6 200.9 1.2 42688.6 204.8 0.2 43060.3 206.4 1.1 43208.7 204.3 0.8 43495.8 203.2 1.4 43777.7 201.7 1.8 44018.7 204.2 0.9 44147.7 203.2 1.1 44265.4 201.7 1.1 44480.1 204.3 0.9 44574.6 202.0 0.5 44678.7 206.2 1.9 44799.7 204.8 1.3 44919.0 212.3 0.8 45069.1 210.4 0.6 45215.8 211.5 0.3 45328.8 208.0 0.7 45466.9 213.9 0.8 45617.5 214.5 0.8 45827.8 217.5 2.2 45969.3 222.7 0.3 46119.7 221.8 1.7 46213.8 219.2 1.2 46333.1 218.3 1.4 46621.9 216.4 1.4 46722.3 214.2 1.0 46832.1 210.8 1.5 46994.4 210.3 0.5 47238.9 207.6 1.2 47448.0 204.3 1.0 47636.2 203.8 0.4 47885.2 205.7 1.0 48150.8 206.2 2.0 48322.4 201.0 0.6 48776.1 201.6 0.9 49036.3 200.1 0.4 49161.3 204.1 1.2 49412.4 203.9 1.3 49655.9 204.4 1.6 49857.5 206.7 0.5 50104.1 207.4 0.5 50541.7 207.6 0.9 50893.2 211.6 0.4 51217.0 215.1 1.8 51492.9 213.8 0.7 51774.8 219.1 0.3 51967.3 220.7 0.4 52176.6 221.1 1.1 52446.4 223.7 1.7 52701.9 223.3 0.9 53052.2 221.1 1.5 53406.1 220.4 0.9 53627.7 218.0 1.8 53944.2 213.9 1.1 54257.7 216.9 0.6 54534.1 208.2 0.7 54785.8 214.8 0.5 55102.5 210.3 1.2 55564.7 207.7 0.8 55869.5 212.4 0.7 56493.1 215.7 0.6 56692.5 217.4 2.5 56971.0 223.7 0.5 57260.5 224.4 0.8 57447.9 223.1 1.2 58173.4 231.3 0.1 58474.7 226.4 1.4 58885.3 223.5 0.7 59225.8 216.7 0.8 59489.3 212.9 0.7 59622.6 217.3 0.6 59902.7 213.8 1.4 60114.8 208.0 1.3 60270.0 210.6 1.0 60599.4 210.9 0.7 60931.7 206.4 1.2 61534.0 202.6 0.9 61763.4 202.7 2.3 61946.5 200.1 0.6 62480.9 197.4 1.2 62742.8 197.2 0.8 62924.5 199.7 1.3 63379.9 203.7 0.5 63590.2 201.7 1.2 63750.8 199.2 0.7 64253.2 209.0 3.3 64446.4 198.2 0.7 64619.8 200.6 1.5 65145.1 204.4 2.9 65711.6 207.2 1.7 66072.7 201.1 2.0 66505.7 203.8 1.1 66940.9 200.2 1.6 67377.7 203.4 0.6 67819.5 205.4 0.9 68224.7 211.3 1.1 68724.3 215.6 1.8 69122.8 220.3 0.5 69628.0 225.2 1.4 69983.4 235.0 1.2 70356.3 237.6 0.8 70768.5 239.5 0.9 71167.0 232.8 0.9 71597.5 232.3 1.0 72060.7 230.9 2.1 72647.1 232.7 0.9 73063.0 231.3 0.7 73346.3 241.2 1.0 73769.0 243.3 1.6 74174.7 249.5 0.7 74463.5 249.9 0.6 74852.3 239.3 1.1 75250.5 238.0 2.0 75627.7 231.7 1.5 76177.6 224.9 1.3 76658.0 226.6 0.8 77112.0 224.1 0.6 77597.1 227.3 0.6 78106.1 229.3 1.3 78625.0 234.7 0.7 79167.3 230.6 0.6 79633.1 233.9 1.5 80279.7 230.3 0.8 80935.8 234.1 1.2 81395.6 238.9 0.9 81937.8 240.9 1.6 82453.4 246.3 0.7 83053.9 247.1 1.0 83454.2 250.8 0.8 83855.6 243.2 0.8 84410.5 238.4 1.1 84815.4 234.7 0.6 85297.5 228.8 1.6 85886.2 223.4 0.7 86428.2 221.1 2.3 87009.1 223.6 0.9 87604.1 217.8 1.6 88185.9 224.0 0.5 88756.9 227.4 1.1 89196.8 228.9 0.6 89830.2 229.7 1.3 90409.8 231.6 0.6 90981.5 231.1 0.6 91482.9 233.7 1.1 92314.7 232.5 2.2 93256.9 235.2 0.8 93695.7 238.2 0.8 94423.7 242.4 0.5 95093.1 242.9 1.1 95826.5 246.2 1.5 96375.6 245.8 0.6 97143.6 242.4 2.0 97827.1 239.9 0.4 98530.2 243.2 0.2 99285.2 243.0 1.0 100003.0 245.6 1.1 100485.9 247.9 1.1 101471.7 244.8 1.1 102347.7 240.1 0.9 103346.6 237.1 1.8 103960.9 240.7 0.9 105073.7 247.8 0.8 106013.2 251.6 0.9 106781.0 262.7 1.4 107895.2 241.6 1.5 108755.0 239.8 1.3 109776.6 245.2 2.1 110584.8 251.7 1.9 111818.1 254.0 1.6 112685.6 263.9 0.7 113400.7 268.7 0.6 114193.5 276.1 0.6