-
Météorologie
Historical CO2 concentrations
CO2 concentrations from long-distant past are determined using data from air bubbles trapped in the Antarctic or Greenland ice sheets. Carbon dioxide is believed to have been present in Earth's first atmosphere, shortly after Earth's formation. The most widely accepted of such studies come from a variety of Antarctic cores and indicate that atmospheric CO2 concentrations were about 260–280 ppmv immediately before industrial emissions began and did not vary much from this level during the preceding 10,000 years. The longest ice core record comes from East Antarctica, where ice has been sampled to an age of 800,000 years. During this time, the atmospheric carbon dioxide concentration has varied between 180–210 ppm during ice ages, increasing to 280–300 ppm during warmer interglacials.
The below estimates come from two sites in Antarctica - Vostok and Epica.
|
profondeur m 
|
âge de la glace années passées
|
âge de l\'air années passées
|
CO2 concentration ppmv
|
|---|---|---|---|
| 149 | 5679 | 2342 | 285 |
| 173 | 6828 | 3634 | 273 |
| 177 | 7043 | 3833 | 268 |
| 229 | 9523 | 6220 | 262 |
| 250 | 10579 | 7327 | 255 |
| 266 | 11334 | 8113 | 260 |
| 303 | 13449 | 10123 | 262 |
| 321 | 14538 | 11013 | 264 |
| 332 | 15208 | 11326 | 245 |
| 342 | 15922 | 11719 | 238 |
| 366 | 17747 | 13405 | 236 |
| 376 | 18580 | 13989 | 225 |
| 444 | 24315 | 17695 | 182 |
| 471 | 26578 | 19988 | 189 |
| 506 | 29630 | 22977 | 192 |
| 545 | 32844 | 26303 | 189 |
| 554 | 33645 | 27062 | 192 |
| 602 | 37421 | 31447 | 205 |
| 626 | 39310 | 33884 | 209 |
| 700 | 45242 | 39880 | 209 |
| 765 | 50610 | 44766 | 189 |
| 788 | 52446 | 47024 | 188 |
| 800 | 53436 | 48229 | 210 |
| 812 | 54474 | 49414 | 216 |
| 835 | 56300 | 51174 | 190 |
| 902 | 61783 | 57068 | 222 |
| 912 | 62689 | 57799 | 210 |
| 986 | 69618 | 63687 | 195 |
| 1011 | 71767 | 65701 | 191 |
| 1024 | 72797 | 66883 | 195 |
| 1087 | 78042 | 72849 | 227 |
| 1113 | 80057 | 75360 | 229 |
| 1162 | 83615 | 78995 | 217 |
| 1175 | 84515 | 80059 | 222 |
| 1210 | 86840 | 82858 | 231 |
| 1237 | 88808 | 84929 | 241 |
| 1252 | 89864 | 85727 | 236 |
| 1261 | 90609 | 86323 | 228 |
| 1274 | 91560 | 87180 | 214 |
| 1289 | 92632 | 88051 | 217 |
| 1309 | 94039 | 89363 | 208 |
| 1338 | 96047 | 91691 | 224 |
| 1349 | 96791 | 92460 | 228 |
| 1387 | 99498 | 95349 | 232 |
| 1452 | 103733 | 99842 | 226 |
| 1463 | 104566 | 100833 | 231 |
| 1476 | 105492 | 101829 | 237 |
| 1505 | 107599 | 103372 | 228 |
| 1526 | 109404 | 105213 | 237 |
| 1542 | 110674 | 106203 | 231 |
| 1575 | 113363 | 108308 | 238 |
| 1583 | 113952 | 108994 | 246 |
| 1598 | 115077 | 110253 | 251 |
| 1615 | 116228 | 111456 | 257 |
| 1628 | 117072 | 112577 | 266 |
| 1638 | 117671 | 113472 | 261 |
| 1644 | 118074 | 114082 | 275 |
| 1651 | 118499 | 114738 | 273 |
| 1669 | 119601 | 116175 | 263 |
| 1687 | 120680 | 117519 | 268 |
| 1701 | 121485 | 118396 | 274 |
| 1716 | 122345 | 119273 | 272 |
| 1727 | 122965 | 120002 | 265 |
| 1737 | 123535 | 120652 | 278 |
| 1758 | 124721 | 121961 | 272 |
| 1770 | 125380 | 122606 | 277 |
| 1789 | 126447 | 123815 | 269 |
| 1790 | 126491 | 123858 | 267 |
| 1799 | 126955 | 124306 | 266 |
| 1804 | 127210 | 124571 | 280 |
| 1807 | 127360 | 124723 | 273 |
| 1810 | 127510 | 124876 | 277 |
| 1826 | 128293 | 125746 | 274 |
| 1830 | 128501 | 126023 | 267 |
| 1836 | 128804 | 126475 | 263 |
| 1842 | 129097 | 126809 | 263 |
| 1852 | 129674 | 127445 | 275 |
| 1859 | 130026 | 127808 | 276 |
| 1869 | 130599 | 128300 | 274 |
| 1870 | 130653 | 128399 | 287 |
| 1876 | 130998 | 128652 | 287 |
| 1883 | 131406 | 129007 | 283 |
| 1890 | 131908 | 129411 | 264 |
| 1895 | 132264 | 129755 | 263 |
| 1902 | 132763 | 130106 | 258 |
| 1904 | 132873 | 130167 | 259 |
| 1919 | 134091 | 130992 | 265 |
| 1930 | 135107 | 131661 | 245 |
| 1932 | 135308 | 131789 | 240 |
| 1936 | 135702 | 132067 | 229 |
| 1947 | 136819 | 132818 | 224 |
| 1955 | 137601 | 133334 | 224 |
| 1955 | 137651 | 133366 | 220 |
| 1960 | 138193 | 133636 | 211 |
| 1970 | 139285 | 134205 | 209 |
| 1972 | 139530 | 134362 | 204 |
| 1980 | 140452 | 135003 | 205 |
| 1982 | 140655 | 135172 | 200 |
| 1983 | 140766 | 135271 | 198 |
| 1987 | 141257 | 135683 | 198 |
| 1991 | 141615 | 135976 | 202 |
| 1992 | 141773 | 136099 | 201 |
| 1995 | 142064 | 136359 | 203 |
| 1998 | 142440 | 136659 | 196 |
| 1999 | 142551 | 136743 | 201 |
| 2006 | 143315 | 137383 | 194 |
| 2010 | 143732 | 137694 | 193 |
| 2013 | 144126 | 137986 | 194 |
| 2015 | 144346 | 138226 | 190 |
| 2026 | 145527 | 139445 | 192 |
| 2029 | 145905 | 139851 | 197 |
| 2041 | 147236 | 141256 | 196 |
| 2042 | 147292 | 141312 | 197 |
| 2050 | 148287 | 142357 | 190 |
| 2078 | 151234 | 145435 | 197 |
| 2107 | 154557 | 149157 | 203 |
| 2116 | 155625 | 150303 | 192 |
| 2117 | 155743 | 150423 | 189 |
| 2131 | 157456 | 151854 | 201 |
| 2157 | 160293 | 154471 | 189 |
| 2164 | 161077 | 155299 | 186 |
| 2167 | 161451 | 155707 | 188 |
| 2203 | 165646 | 160494 | 204 |
| 2207 | 166193 | 161037 | 197 |
| 2225 | 168391 | 162996 | 192 |
| 2231 | 169094 | 163522 | 190 |
| 2240 | 170119 | 164341 | 187 |
| 2247 | 170922 | 165278 | 184 |
| 2254 | 171766 | 166299 | 197 |
| 2280 | 174920 | 169870 | 198 |
| 2302 | 177644 | 172596 | 198 |
| 2316 | 179474 | 174617 | 196 |
| 2325 | 180546 | 175440 | 190 |
| 2331 | 181265 | 176030 | 189 |
| 2333 | 181502 | 176271 | 190 |
| 2348 | 183525 | 178550 | 208 |
| 2363 | 185640 | 180779 | 213 |
| 2372 | 186927 | 181617 | 218 |
| 2379 | 187934 | 182447 | 198 |
| 2386 | 188892 | 183355 | 200 |
| 2399 | 190587 | 185063 | 204 |
| 2414 | 192382 | 187199 | 211 |
| 2425 | 193816 | 189335 | 231 |
| 2437 | 195298 | 191057 | 232 |
| 2442 | 195947 | 191592 | 220 |
| 2451 | 197086 | 192632 | 218 |
| 2470 | 199372 | 195123 | 227 |
| 2475 | 199904 | 195625 | 220 |
| 2488 | 201324 | 197567 | 226 |
| 2494 | 201968 | 198442 | 241 |
| 2499 | 202496 | 199025 | 243 |
| 2525 | 205458 | 202212 | 251 |
| 2533 | 206496 | 203191 | 239 |
| 2543 | 207803 | 204283 | 248 |
| 2552 | 208947 | 205148 | 244 |
| 2555 | 209307 | 205435 | 232 |
| 2558 | 209648 | 205715 | 232 |
| 2561 | 210053 | 206119 | 229 |
| 2565 | 210525 | 206672 | 226 |
| 2568 | 210837 | 207029 | 229 |
| 2570 | 211175 | 207412 | 231 |
| 2574 | 211628 | 207991 | 238 |
| 2576 | 211781 | 208177 | 237 |
| 2580 | 212295 | 208794 | 230 |
| 2582 | 212528 | 209073 | 241 |
| 2585 | 212846 | 209414 | 242 |
| 2589 | 213315 | 210022 | 245 |
| 2590 | 213500 | 210232 | 244 |
| 2595 | 214036 | 210830 | 247 |
| 2597 | 214219 | 211005 | 252 |
| 2600 | 214639 | 211476 | 247 |
| 2604 | 215012 | 211929 | 240 |
| 2607 | 215343 | 212281 | 257 |
| 2613 | 216014 | 213005 | 243 |
| 2622 | 217099 | 214153 | 251 |
| 2629 | 217989 | 215041 | 241 |
| 2634 | 218602 | 215593 | 240 |
| 2637 | 218908 | 215879 | 243 |
| 2640 | 219393 | 216459 | 248 |
| 2644 | 219935 | 217009 | 252 |
| 2647 | 220255 | 217271 | 251 |
| 2649 | 220680 | 217574 | 245 |
| 2650 | 220822 | 217676 | 245 |
| 2656 | 221718 | 218342 | 241 |
| 2667 | 223548 | 219679 | 214 |
| 2667 | 223548 | 219680 | 212 |
| 2669 | 224102 | 220042 | 216 |
| 2670 | 224240 | 220182 | 216 |
| 2675 | 224993 | 220758 | 204 |
| 2675 | 224993 | 220760 | 207 |
| 2677 | 225469 | 221054 | 209 |
| 2683 | 226339 | 221612 | 206 |
| 2691 | 227885 | 222958 | 203 |
| 2694 | 228349 | 223446 | 216 |
| 2698 | 229167 | 224630 | 237 |
| 2701 | 229802 | 225299 | 235 |
| 2703 | 230039 | 225509 | 233 |
| 2706 | 230547 | 225888 | 225 |
| 2712 | 231601 | 226710 | 232 |
| 2715 | 232206 | 227384 | 234 |
| 2718 | 232571 | 227840 | 242 |
| 2733 | 234795 | 230703 | 245 |
| 2736 | 235232 | 231382 | 252 |
| 2739 | 235652 | 231990 | 241 |
| 2742 | 236077 | 232570 | 247 |
| 2745 | 236467 | 233102 | 243 |
| 2748 | 236866 | 233646 | 239 |
| 2751 | 237301 | 234126 | 246 |
| 2754 | 237602 | 234470 | 246 |
| 2756 | 237889 | 234781 | 247 |
| 2759 | 238206 | 235213 | 253 |
| 2765 | 238908 | 236236 | 260 |
| 2768 | 239273 | 236851 | 263 |
| 2774 | 240006 | 237831 | 279 |
| 2777 | 240467 | 238199 | 280 |
| 2783 | 241535 | 238935 | 264 |
| 2786 | 242092 | 239250 | 252 |
| 2789 | 242675 | 239545 | 250 |
| 2792 | 243237 | 239866 | 237 |
| 2795 | 243813 | 240201 | 230 |
| 2798 | 244446 | 240577 | 219 |
| 2807 | 246379 | 242068 | 215 |
| 2816 | 248364 | 243653 | 200 |
| 2819 | 249046 | 244215 | 214 |
| 2822 | 249670 | 244863 | 195 |
| 2825 | 250309 | 245483 | 197 |
| 2828 | 250920 | 246090 | 195 |
| 2834 | 252279 | 247447 | 199 |
| 2837 | 252879 | 248087 | 202 |
| 2840 | 253559 | 248980 | 204 |
| 2846 | 254873 | 250461 | 204 |
| 2852 | 256182 | 251521 | 210 |
| 2854 | 256858 | 252174 | 206 |
| 2858 | 257604 | 252959 | 209 |
| 2861 | 258351 | 253880 | 215 |
| 2867 | 259882 | 255233 | 228 |
| 2871 | 260936 | 256053 | 200 |
| 2873 | 261526 | 256501 | 212 |
| 2876 | 262455 | 257247 | 189 |
| 2879 | 263067 | 257792 | 187 |
| 2881 | 263844 | 258477 | 194 |
| 2885 | 264666 | 259228 | 199 |
| 2888 | 265457 | 259958 | 185 |
| 2891 | 266255 | 260754 | 190 |
| 2894 | 267039 | 261595 | 194 |
| 2897 | 267825 | 262411 | 194 |
| 2900 | 268558 | 263207 | 198 |
| 2903 | 269307 | 264046 | 193 |
| 2906 | 270052 | 264834 | 202 |
| 2909 | 270770 | 265703 | 205 |
| 2911 | 271454 | 266492 | 211 |
| 2915 | 272171 | 267434 | 215 |
| 2919 | 273256 | 268679 | 224 |
| 2927 | 274802 | 270680 | 231 |
| 2933 | 276091 | 272275 | 228 |
| 2936 | 276731 | 273012 | 226 |
| 2939 | 277526 | 273910 | 231 |
| 2942 | 278017 | 274445 | 230 |
| 2945 | 278711 | 275218 | 231 |
| 2954 | 280944 | 277298 | 235 |
| 2957 | 281740 | 277925 | 220 |
| 2960 | 282539 | 278602 | 217 |
| 2965 | 283810 | 279543 | 208 |
| 2968 | 284656 | 280361 | 206 |
| 2971 | 285549 | 281200 | 207 |
| 2974 | 286475 | 282301 | 213 |
| 2980 | 288013 | 283492 | 213 |
| 2986 | 289826 | 285301 | 217 |
| 2989 | 290554 | 286217 | 224 |
| 2992 | 291328 | 287102 | 231 |
| 2995 | 292121 | 287846 | 236 |
| 2998 | 292855 | 288492 | 239 |
| 3000 | 293610 | 289433 | 236 |
| 3004 | 294495 | 290571 | 240 |
| 3007 | 295477 | 291769 | 241 |
| 3010 | 296158 | 292474 | 250 |
| 3013 | 296982 | 293002 | 249 |
| 3016 | 297810 | 293676 | 245 |
| 3019 | 298623 | 294615 | 226 |
| 3023 | 299716 | 295849 | 228 |
| 3025 | 300267 | 296380 | 226 |
| 3028 | 300928 | 297131 | 233 |
| 3030 | 301665 | 298051 | 238 |
| 3034 | 302452 | 299020 | 239 |
| 3037 | 303201 | 299877 | 242 |
| 3040 | 303939 | 300646 | 252 |
| 3043 | 304745 | 301496 | 257 |
| 3046 | 305612 | 302456 | 257 |
| 3049 | 306561 | 303334 | 247 |
| 3052 | 307464 | 303953 | 273 |
| 3055 | 308358 | 304590 | 252 |
| 3058 | 309281 | 305304 | 245 |
| 3058 | 309281 | 305306 | 245 |
| 3064 | 310905 | 307131 | 256 |
| 3067 | 311704 | 308101 | 249 |
| 3073 | 313292 | 310035 | 257 |
| 3073 | 313292 | 310039 | 256 |
| 3075 | 314032 | 310930 | 260 |
| 3079 | 314822 | 311774 | 260 |
| 3082 | 315592 | 312669 | 261 |
| 3085 | 316304 | 313493 | 266 |
| 3088 | 317108 | 314374 | 264 |
| 3091 | 317775 | 315143 | 266 |
| 3094 | 318509 | 315940 | 270 |
| 3096 | 319231 | 316681 | 272 |
| 3100 | 319978 | 317445 | 275 |
| 3106 | 321448 | 318980 | 265 |
| 3109 | 322216 | 319754 | 272 |
| 3112 | 322746 | 320378 | 273 |
| 3115 | 323441 | 321386 | 273 |
| 3118 | 324021 | 322111 | 282 |
| 3120 | 324461 | 322582 | 289 |
| 3121 | 324711 | 322827 | 288 |
| 3124 | 325400 | 323485 | 299 |
| 3127 | 326200 | 324189 | 278 |
| 3130 | 327237 | 324991 | 286 |
| 3132 | 328058 | 325527 | 279 |
| 3136 | 329135 | 326239 | 271 |
| 3139 | 330278 | 327114 | 256 |
| 3142 | 331513 | 328097 | 242 |
| 3145 | 333111 | 329267 | 240 |
| 3148 | 334356 | 330208 | 234 |
| 3154 | 337304 | 332293 | 250 |
| 3157 | 338770 | 333627 | 201 |
| 3160 | 340242 | 335290 | 205 |
| 3163 | 341849 | 336972 | 205 |
| 3166 | 343123 | 338282 | 212 |
| 3169 | 344844 | 340165 | 220 |
| 3175 | 347589 | 342998 | 221 |
| 3178 | 349298 | 344735 | 216 |
| 3181 | 350773 | 346105 | 210 |
| 3183 | 352377 | 347610 | 209 |
| 3190 | 355795 | 350765 | 193 |
| 3193 | 357450 | 352412 | 186 |
| 3196 | 359223 | 354372 | 186 |
| 3200 | 361445 | 356838 | 201 |
| 3205 | 363962 | 359688 | 206 |
| 3211 | 367048 | 362766 | 202 |
| 3214 | 368693 | 364499 | 200 |
| 3216 | 370095 | 366221 | 215 |
| 3220 | 371843 | 368117 | 225 |
| 3223 | 373629 | 369563 | 230 |
| 3229 | 377177 | 373014 | 227 |
| 3232 | 378469 | 374561 | 240 |
| 3235 | 380153 | 376758 | 239 |
| 3238 | 381834 | 378194 | 247 |
| 3241 | 383395 | 379633 | 246 |
| 3246 | 386788 | 383504 | 258 |
| 3250 | 388757 | 384909 | 265 |
| 3252 | 390641 | 386579 | 259 |
| 3259 | 394634 | 390589 | 255 |
| 3262 | 396423 | 392451 | 250 |
| 3265 | 398091 | 394628 | 266 |
| 3268 | 399733 | 396713 | 275 |
| 3271 | 401423 | 398554 | 277 |
| 3274 | 403173 | 400390 | 278 |
| 3284 | 408236 | 405844 | 280 |
| 3289 | 411202 | 409022 | 281 |
| 3289 | 411202 | 409022 | 284 |
| 3293 | 413010 | 410831 | 276 |
| 3299 | 416332 | 414085 | 286 |
| 3301 | 417638 | 415434 | 287 |
| 3304 | 419328 | 417160 | 278 |
Data: J.R.Petit, Laboratoire de Glaciologie et Geophysique de l'Environnement, Grenoble, France
|
profondeur m
|
âge de l\'air années passées
|
CO2 concentration ppmv
|
|---|---|---|
| 2701 | 391217 | 260 |
| 2703 | 392312 | 274 |
| 2705 | 393318 | 261 |
| 2714 | 396432 | 276 |
| 2718 | 398515 | 277 |
| 2721 | 399315 | 283 |
| 2725 | 400878 | 283 |
| 2727 | 401622 | 276 |
| 2732 | 402740 | 277 |
| 2734 | 403840 | 281 |
| 2738 | 405288 | 280 |
| 2740 | 406000 | 286 |
| 2745 | 407420 | 285 |
| 2747 | 407820 | 275 |
| 2747 | 407820 | 274 |
| 2749 | 408900 | 283 |
| 2751 | 409970 | 284 |
| 2756 | 411235 | 275 |
| 2758 | 412060 | 265 |
| 2760 | 412900 | 272 |
| 2762 | 413498 | 276 |
| 2763 | 413903 | 272 |
| 2765 | 414769 | 273 |
| 2766 | 415195 | 272 |
| 2767 | 415647 | 275 |
| 2769 | 416500 | 274 |
| 2771 | 416946 | 271 |
| 2772 | 417398 | 274 |
| 2774 | 418331 | 269 |
| 2775 | 418833 | 266 |
| 2776 | 419381 | 271 |
| 2778 | 420402 | 268 |
| 2779 | 420907 | 268 |
| 2780 | 421358 | 271 |
| 2781 | 421687 | 270 |
| 2782 | 421940 | 265 |
| 2783 | 422260 | 255 |
| 2784 | 422736 | 252 |
| 2785 | 423234 | 248 |
| 2785 | 423429 | 243 |
| 2787 | 424425 | 220 |
| 2788 | 424999 | 227 |
| 2789 | 425828 | 212 |
| 2790 | 426097 | 208 |
| 2791 | 426955 | 210 |
| 2792 | 427927 | 208 |
| 2793 | 428953 | 200 |
| 2794 | 429953 | 202 |
| 2795 | 430931 | 201 |
| 2796 | 431940 | 202 |
| 2797 | 432971 | 199 |
| 2799 | 434414 | 201 |
| 2800 | 435440 | 204 |
| 2801 | 436435 | 208 |
| 2802 | 437292 | 202 |
| 2803 | 438142 | 201 |
| 2804 | 439014 | 205 |
| 2806 | 439915 | 202 |
| 2807 | 440783 | 198 |
| 2808 | 441656 | 193 |
| 2809 | 442558 | 193 |
| 2809 | 443078 | 199 |
| 2810 | 443451 | 204 |
| 2811 | 443964 | 203 |
| 2811 | 444327 | 208 |
| 2812 | 445197 | 202 |
| 2813 | 446001 | 196 |
| 2814 | 446854 | 191 |
| 2815 | 447768 | 194 |
| 2817 | 448736 | 200 |
| 2817 | 449387 | 205 |
| 2818 | 449726 | 210 |
| 2819 | 450682 | 208 |
| 2820 | 451578 | 204 |
| 2821 | 452463 | 203 |
| 2822 | 453421 | 206 |
| 2823 | 454007 | 207 |
| 2823 | 454408 | 216 |
| 2824 | 454973 | 219 |
| 2824 | 455369 | 229 |
| 2825 | 455911 | 233 |
| 2825 | 456277 | 244 |
| 2826 | 456857 | 244 |
| 2826 | 457122 | 246 |
| 2828 | 457862 | 241 |
| 2829 | 458560 | 233 |
| 2830 | 459335 | 233 |
| 2831 | 460194 | 237 |
| 2832 | 460977 | 239 |
| 2833 | 461374 | 237 |
| 2833 | 461657 | 231 |
| 2834 | 462065 | 221 |
| 2834 | 462368 | 219 |
| 2835 | 463168 | 224 |
| 2836 | 463971 | 223 |
| 2837 | 464726 | 227 |
| 2839 | 465451 | 231 |
| 2840 | 466162 | 231 |
| 2841 | 466862 | 231 |
| 2842 | 467567 | 233 |
| 2843 | 468278 | 233 |
| 2844 | 468966 | 231 |
| 2845 | 469625 | 237 |
| 2846 | 470277 | 242 |
| 2847 | 470643 | 241 |
| 2847 | 470907 | 253 |
| 2848 | 471315 | 249 |
| 2848 | 471526 | 243 |
| 2850 | 472149 | 243 |
| 2851 | 472777 | 247 |
| 2852 | 473427 | 244 |
| 2853 | 474101 | 240 |
| 2854 | 474769 | 239 |
| 2855 | 475459 | 238 |
| 2856 | 476148 | 239 |
| 2857 | 476846 | 238 |
| 2858 | 477534 | 236 |
| 2859 | 478234 | 237 |
| 2861 | 478930 | 233 |
| 2862 | 479646 | 231 |
| 2863 | 480360 | 231 |
| 2864 | 481102 | 228 |
| 2865 | 481851 | 231 |
| 2866 | 482610 | 231 |
| 2867 | 483380 | 232 |
| 2868 | 484133 | 232 |
| 2869 | 484876 | 234 |
| 2870 | 485621 | 234 |
| 2872 | 486394 | 236 |
| 2873 | 487178 | 236 |
| 2874 | 487938 | 238 |
| 2875 | 488702 | 237 |
| 2876 | 489528 | 240 |
| 2877 | 490393 | 233 |
| 2878 | 491265 | 236 |
| 2879 | 492129 | 235 |
| 2880 | 492978 | 242 |
| 2881 | 493835 | 238 |
| 2883 | 494703 | 239 |
| 2884 | 495561 | 242 |
| 2885 | 496406 | 243 |
| 2886 | 497231 | 247 |
| 2887 | 498041 | 246 |
| 2888 | 498855 | 246 |
| 2889 | 499644 | 245 |
| 2890 | 500421 | 248 |
| 2891 | 501198 | 246 |
| 2892 | 501967 | 244 |
| 2896 | 504239 | 242 |
| 2897 | 504988 | 237 |
| 2898 | 505754 | 236 |
| 2899 | 506564 | 234 |
| 2900 | 507377 | 230 |
| 2901 | 508216 | 228 |
| 2902 | 509069 | 225 |
| 2903 | 509918 | 223 |
| 2905 | 510744 | 221 |
| 2906 | 511575 | 220 |
| 2907 | 512378 | 221 |
| 2907 | 512841 | 215 |
| 2908 | 513175 | 211 |
| 2908 | 513682 | 204 |
| 2909 | 514035 | 200 |
| 2910 | 514654 | 195 |
| 2910 | 514978 | 194 |
| 2911 | 515550 | 191 |
| 2911 | 515967 | 200 |
| 2912 | 517004 | 199 |
| 2913 | 518064 | 205 |
| 2914 | 519101 | 206 |
| 2916 | 520130 | 213 |
| 2917 | 521152 | 211 |
| 2918 | 522182 | 205 |
| 2919 | 523260 | 204 |
| 2920 | 524340 | 208 |
| 2921 | 525391 | 210 |
| 2922 | 526478 | 210 |
| 2923 | 527568 | 210 |
| 2924 | 528740 | 205 |
| 2925 | 529922 | 203 |
| 2926 | 530594 | 209 |
| 2927 | 531062 | 214 |
| 2928 | 532184 | 215 |
| 2929 | 533223 | 220 |
| 2930 | 534178 | 222 |
| 2930 | 534768 | 222 |
| 2931 | 535168 | 226 |
| 2932 | 535860 | 222 |
| 2932 | 536219 | 220 |
| 2933 | 537204 | 224 |
| 2934 | 538113 | 224 |
| 2935 | 538949 | 227 |
| 2936 | 539733 | 234 |
| 2938 | 540530 | 241 |
| 2938 | 541020 | 243 |
| 2939 | 541377 | 249 |
| 2939 | 541910 | 244 |
| 2940 | 542293 | 251 |
| 2940 | 542952 | 246 |
| 2941 | 543267 | 240 |
| 2942 | 544277 | 238 |
| 2943 | 545384 | 235 |
| 2944 | 546012 | 230 |
| 2944 | 546444 | 230 |
| 2945 | 547458 | 230 |
| 2946 | 548448 | 228 |
| 2947 | 549414 | 232 |
| 2949 | 550359 | 232 |
| 2950 | 551291 | 235 |
| 2951 | 552043 | 234 |
| 2952 | 553098 | 240 |
| 2953 | 553926 | 242 |
| 2954 | 554739 | 246 |
| 2955 | 555556 | 246 |
| 2956 | 556358 | 248 |
| 2957 | 557168 | 251 |
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| 3000 | 587116 | 225 |
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| 3060 | 649376 | 186 |
Donnée: European Project for Ice Coring in Antarctica (EPICA) members: D., M. Le Floch, B. Bereiter, T. Blunier, J.-M. Barnola, U. Siegenthaler, D. Raynaud, J. Jouzel, H. Fischer, K. Kawamura, and T.F. Stocker
