#******************************************************************************* #*** Historical CO2 Record from the Vostok Ice Core *** #*** *** #*** Source: J.M. Barnola *** #*** D. Raynaud *** #*** C. Lorius *** #*** Laboratoire de Glaciologie et de Geophysique de l'Environnement *** #*** 38402 Saint Martin d'Heres Cedex, France *** #*** *** #*** N. I. Barkov *** #*** Arctic and Antarctic Research Institute *** #*** Beringa Street 38 *** #*** St. Petersburg 199226, Russia *** #*** *** #*** January 2003 *** #******************************************************************************* # Mean # Age of age of CO2 #Depth the ice the air concentration # (m) (yr BP) (yr BP) (ppmv) 149.1,5679,2342,284.7 173.1,6828,3634,272.8 177.4,7043,3833,268.1 228.6,9523,6220,262.2 250.3,10579,7327,254.6 266.0,11334,8113,259.6 302.6,13449,10123,261.6 321.2,14538,11013,263.7 331.6,15208,11326,244.8 342.1,15922,11719,238.3 365.5,17747,13405,236.2 375.6,18580,13989,225.3 443.5,24315,17695,182.2 470.8,26578,19988,189.2 506.4,29630,22977,191.6 544.7,32844,26303,188.5 554.2,33645,27062,191.7 602.3,37421,31447,205.4 625.6,39310,33884,209.1 700.2,45242,39880,209.1 765.0,50610,44766,189.3 788.2,52446,47024,188.4 800.0,53436,48229,210.1 812.2,54474,49414,215.7 834.8,56300,51174,190.4 902.2,61783,57068,221.8 912.0,62689,57799,210.4 986.2,69618,63687,195.4 1011.3,71767,65701,191.4 1023.5,72797,66883,195.0 1087.2,78042,72849,227.4 1112.5,80057,75360,229.2 1162.1,83615,78995,217.1 1175.0,84515,80059,221.8 1209.9,86840,82858,231.0 1237.2,88808,84929,241.1 1251.5,89864,85727,236.4 1261.2,90609,86323,228.1 1274.2,91560,87180,214.2 1289.2,92632,88051,217.0 1309.2,94039,89363,208.0 1338.2,96047,91691,224.3 1349.0,96791,92460,228.4 1387.2,99498,95349,232.1 1451.5,103733,99842,225.9 1463.2,104566,100833,230.9 1476.1,105492,101829,236.9 1505.0,107599,103372,228.2 1526.3,109404,105213,236.9 1542.1,110674,106203,230.7 1575.2,113363,108308,238.2 1582.8,113952,108994,245.7 1598.0,115077,110253,251.3 1615.0,116228,111456,256.8 1627.9,117072,112577,266.3 1637.6,117671,113472,261.4 1644.0,118074,114082,274.6 1651.0,118499,114738,273.3 1669.2,119601,116175,262.5 1687.2,120680,117519,267.6 1700.9,121485,118396,273.8 1716.0,122345,119273,272.0 1726.8,122965,120002,265.2 1736.8,123535,120652,277.7 1758.2,124721,121961,272.2 1770.0,125380,122606,276.5 1789.2,126447,123815,268.7 1790.0,126491,123858,266.6 1799.0,126955,124306,266.3 1804.0,127210,124571,279.8 1807.0,127360,124723,273.0 1810.0,127510,124876,277.2 1825.7,128293,125746,273.8 1830.0,128501,126023,267.1 1836.0,128804,126475,262.5 1841.6,129097,126809,262.6 1852.4,129674,127445,275.4 1859.0,130026,127808,275.6 1869.3,130599,128300,274.1 1870.2,130653,128399,287.1 1875.9,130998,128652,286.8 1882.5,131406,129007,282.7 1890.0,131908,129411,264.1 1895.0,132264,129755,263.4 1902.0,132763,130106,257.9 1903.5,132873,130167,259.0 1919.0,134091,130992,264.6 1930.0,135107,131661,245.0 1932.0,135308,131789,240.4 1936.0,135702,132067,228.9 1947.0,136819,132818,223.5 1954.5,137601,133334,224.0 1955.0,137651,133366,220.3 1960.0,138193,133636,210.6 1969.8,139285,134205,208.9 1972.0,139530,134362,203.7 1980.2,140452,135003,204.6 1982.0,140655,135172,200.4 1983.0,140766,135271,198.0 1987.4,141257,135683,198.1 1990.6,141615,135976,201.8 1992.0,141773,136099,200.7 1994.6,142064,136359,202.5 1998.0,142440,136659,195.9 1999.0,142551,136743,201.1 2005.8,143315,137383,194.4 2009.5,143732,137694,193.4 2013.0,144126,137986,194.2 2015.0,144346,138226,190.2 2025.7,145527,139445,192.3 2029.0,145905,139851,196.5 2041.0,147236,141256,195.6 2041.5,147292,141312,196.5 2050.3,148287,142357,190.4 2077.5,151234,145435,197.0 2107.1,154557,149157,203.0 2116.0,155625,150303,191.9 2117.0,155743,150423,188.9 2131.1,157456,151854,200.6 2157.0,160293,154471,189.0 2164.0,161077,155299,185.5 2167.2,161451,155707,187.5 2203.0,165646,160494,204.4 2207.3,166193,161037,196.5 2225.0,168391,162996,191.6 2231.1,169094,163522,190.1 2240.1,170119,164341,186.7 2247.0,170922,165278,183.8 2254.1,171766,166299,196.5 2280.0,174920,169870,197.9 2302.0,177644,172596,197.8 2316.1,179474,174617,196.0 2325.0,180546,175440,190.3 2331.1,181265,176030,189.4 2333.0,181502,176271,190.1 2348.0,183525,178550,207.7 2363.0,185640,180779,213.2 2372.0,186927,181617,217.7 2379.2,187934,182447,198.1 2386.0,188892,183355,199.8 2399.0,190587,185063,203.5 2414.0,192382,187199,210.7 2425.0,193816,189335,231.4 2437.0,195298,191057,231.5 2442.1,195947,191592,220.3 2451.0,197086,192632,218.0 2470.3,199372,195123,226.5 2475.0,199904,195625,220.1 2488.1,201324,197567,226.4 2494.1,201968,198442,241.2 2499.0,202496,199025,242.6 2525.0,205458,202212,251.0 2533.0,206496,203191,239.1 2543.0,207803,204283,247.7 2552.0,208947,205148,244.4 2554.9,209307,205435,231.9 2557.7,209648,205715,232.2 2560.9,210053,206119,228.7 2564.9,210525,206672,226.3 2567.5,210837,207029,229.4 2570.4,211175,207412,231.4 2574.2,211628,207991,238.2 2575.5,211781,208177,237.2 2579.9,212295,208794,230.0 2581.9,212528,209073,240.5 2584.7,212846,209414,242.2 2588.8,213315,210022,244.6 2590.4,213500,210232,243.9 2595.1,214036,210830,247.3 2596.7,214219,211005,252.0 2600.4,214639,211476,246.9 2603.7,215012,211929,239.5 2606.6,215343,212281,257.4 2612.5,216014,213005,243.4 2621.7,217099,214153,251.2 2629.4,217989,215041,241.4 2634.4,218602,215593,240.3 2636.7,218908,215879,242.7 2640.4,219393,216459,247.5 2644.4,219935,217009,251.7 2646.6,220255,217271,251.2 2649.4,220680,217574,245.3 2650.4,220822,217676,245.4 2656.2,221718,218342,240.5 2666.7,223548,219679,214.1 2666.7,223548,219680,212.2 2669.4,224102,220042,216.1 2670.4,224240,220182,216.2 2674.6,224993,220758,203.7 2674.6,224993,220760,207.2 2677.4,225469,221054,208.9 2682.6,226339,221612,205.7 2691.0,227885,222958,203.4 2693.6,228349,223446,215.7 2698.0,229167,224630,236.9 2701.4,229802,225299,234.5 2702.7,230039,225509,233.1 2705.6,230547,225888,224.5 2711.7,231601,226710,232.4 2715.4,232206,227384,233.9 2717.7,232571,227840,241.7 2732.7,234795,230703,245.2 2735.7,235232,231382,252.1 2738.7,235652,231990,241.4 2741.7,236077,232570,247.4 2744.6,236467,233102,243.1 2747.6,236866,233646,239.2 2751.1,237301,234126,245.7 2753.6,237602,234470,245.9 2756.2,237889,234781,247.4 2759.1,238206,235213,252.9 2765.2,238908,236236,259.8 2768.2,239273,236851,263.2 2773.5,240006,237831,279.0 2776.5,240467,238199,280.3 2782.7,241535,238935,263.8 2785.5,242092,239250,252.4 2788.5,242675,239545,249.9 2791.5,243237,239866,236.7 2794.5,243813,240201,230.4 2797.5,244446,240577,219.4 2806.5,246379,242068,214.7 2815.6,248364,243653,200.2 2818.6,249046,244215,213.9 2821.5,249670,244863,195.4 2824.5,250309,245483,196.7 2827.5,250920,246090,195.4 2833.8,252279,247447,199.0 2836.5,252879,248087,201.9 2839.5,253559,248980,204.0 2845.5,254873,250461,203.9 2851.5,256182,251521,209.7 2854.4,256858,252174,205.7 2857.5,257604,252959,208.9 2860.5,258351,253880,214.7 2866.5,259882,255233,228.2 2870.5,260936,256053,199.9 2872.7,261526,256501,211.7 2876.2,262455,257247,188.7 2878.5,263067,257792,187.2 2881.4,263844,258477,194.2 2884.5,264666,259228,198.9 2887.5,265457,259958,184.7 2890.5,266255,260754,190.4 2893.5,267039,261595,193.9 2896.5,267825,262411,194.2 2899.5,268558,263207,198.4 2902.5,269307,264046,193.2 2905.5,270052,264834,202.2 2908.5,270770,265703,204.5 2911.5,271454,266492,211.0 2914.5,272171,267434,215.4 2919.4,273256,268679,223.7 2926.5,274802,270680,231.4 2932.5,276091,272275,228.0 2935.5,276731,273012,226.4 2939.3,277526,273910,231.4 2941.5,278017,274445,230.4 2944.5,278711,275218,231.0 2953.5,280944,277298,234.9 2956.5,281740,277925,220.4 2959.5,282539,278602,217.2 2964.5,283810,279543,207.7 2967.5,284656,280361,206.0 2970.5,285549,281200,206.7 2973.8,286475,282301,212.7 2979.5,288013,283492,213.2 2986.0,289826,285301,217.1 2988.6,290554,286217,224.4 2991.5,291328,287102,231.0 2994.5,292121,287846,236.2 2997.5,292855,288492,239.0 3000.4,293610,289433,236.0 3003.5,294495,290571,240.2 3007.0,295477,291769,240.7 3009.5,296158,292474,250.2 3012.5,296982,293002,248.6 3015.5,297810,293676,244.9 3018.5,298623,294615,225.9 3022.7,299716,295849,227.9 3024.9,300267,296380,226.2 3027.5,300928,297131,233.2 3030.4,301665,298051,237.9 3033.5,302452,299020,239.0 3036.5,303201,299877,241.9 3039.5,303939,300646,251.7 3042.5,304745,301496,256.8 3045.5,305612,302456,257.2 3048.6,306561,303334,246.9 3051.5,307464,303953,272.7 3054.5,308358,304590,251.7 3057.7,309281,305304,245.2 3057.7,309281,305306,244.7 3063.5,310905,307131,255.9 3066.5,311704,308101,249.2 3072.5,313292,310035,257.2 3072.5,313292,310039,256.3 3075.4,314032,310930,260.4 3078.5,314822,311774,260.3 3081.6,315592,312669,260.6 3084.5,316304,313493,266.3 3087.8,317108,314374,264.0 3090.5,317775,315143,266.2 3093.5,318509,315940,270.2 3096.5,319231,316681,271.9 3099.5,319978,317445,275.2 3105.5,321448,318980,265.0 3109.0,322216,319754,271.8 3111.5,322746,320378,272.7 3114.8,323441,321386,273.2 3117.5,324021,322111,282.4 3119.5,324461,322582,289.2 3120.6,324711,322827,288.4 3123.5,325400,323485,298.7 3126.5,326200,324189,278.2 3129.9,327237,324991,285.8 3132.4,328058,325527,278.7 3135.5,329135,326239,270.5 3138.5,330278,327114,255.7 3141.5,331513,328097,241.9 3145.0,333111,329267,239.7 3147.5,334356,330208,234.2 3153.5,337304,332293,250.2 3156.5,338770,333627,200.7 3159.5,340242,335290,205.2 3162.8,341849,336972,204.9 3165.5,343123,338282,211.9 3169.0,344844,340165,220.4 3174.5,347589,342998,221.2 3177.8,349298,344735,216.2 3180.5,350773,346105,209.5 3183.4,352377,347610,209.2 3189.5,355795,350765,193.0 3192.5,357450,352412,186.2 3195.8,359223,354372,185.8 3200.0,361445,356838,201.2 3204.7,363962,359688,206.4 3210.5,367048,362766,201.9 3213.7,368693,364499,200.0 3216.5,370095,366221,214.7 3219.5,371843,368117,224.6 3222.5,373629,369563,229.7 3228.9,377177,373014,227.0 3231.5,378469,374561,240.0 3234.5,380153,376758,239.1 3237.5,381834,378194,246.9 3240.5,383395,379633,245.9 3246.4,386788,383504,258.1 3249.5,388757,384909,264.7 3252.5,390641,386579,259.3 3258.5,394634,390589,255.2 3261.5,396423,392451,250.2 3264.5,398091,394628,266.3 3267.5,399733,396713,274.7 3270.6,401423,398554,277.1 3273.8,403173,400390,278.0 3283.5,408236,405844,279.7 3289.5,411202,409022,281.2 3289.5,411202,409022,283.7 3292.9,413010,410831,276.3 3299.0,416332,414085,285.5 3301.4,417638,415434,286.9 3304.4,419328,417160,277.6