NASA-U core 1 depth age scale & annual accumulation, based on Calcium Reference: M. Anklin, R. C. Bales, E. Mosley-Thompson & K. Steffen. Annual accumulation at two sites in northwest Greenland during recent centuries, Journal of Geophysical Research, 103(D22):28,775-28,783 (1998). Primary data are 1st 2 columns. Fourth column gives accumulation values reported in above reference. depth depth accum year m m_water m_water ---- ---- ---- ---- 1995 0.21751 0.07281 0.0728112 1994 1.19316 0.39248 0.319746 1993 1.9898 0.69793 0.305577 1992 2.58951 0.93290 0.235095 1991 3.52041 1.31016 0.377552 1990 4.56767 1.75631 0.446615 1989 4.99561 1.93434 0.178226 1988 5.8012 2.29636 0.362516 1987 6.49937 2.61403 0.318152 1986 7.2065 2.93811 0.324645 1985 7.88677 3.27144 0.333976 1984 8.57599 3.61236 0.341638 1983 9.12925 3.8875 0.275774 1982 9.72001 4.1882 0.301435 1981 10.266 4.46596 0.278491 1980 11.1432 4.91301 0.448349 1979 11.7698 5.24825 0.336272 1978 12.4322 5.60405 0.356989 1977 12.9284 5.87151 0.268375 1976 13.8414 6.36978 0.50015 1975 14.638 6.80613 0.438102 1974 15.3451 7.19859 0.394122 1973 15.9061 7.51499 0.31781 1972 16.4521 7.82254 0.308974 1971 16.8997 8.07454 0.253202 1970 17.4099 8.36662 0.293513 1969 18.0633 8.74368 0.379008 1968 18.7078 9.11942 0.377765 1967 19.4865 9.58494 0.468155 1966 20.0141 9.90571 0.322659 1965 20.6228 10.2679 0.364413 1964 21.321 10.6901 0.424827 1963 21.9654 11.0876 0.40016 1962 22.5025 11.4175 0.332036 1961 23.1291 11.803 0.38819 1960 23.5766 12.0799 0.279004 1959 24.1663 12.4452 0.367905 1958 24.7571 12.8115 0.369076 1957 25.2673 13.1302 0.321201 1956 26.0281 13.6088 0.482522 1955 26.5831 13.9607 0.354767 1954 27.1917 14.3477 0.390315 1953 27.6303 14.6284 0.28314 1952 28.2283 15.0114 0.386345 1951 28.7296 15.3327 0.324248 1950 29.2308 15.6536 0.323801 1949 29.7321 15.9739 0.323364 1948 30.1796 16.2615 0.290488 1947 30.7257 16.6165 0.358484 1946 31.2985 16.9898 0.377018 1945 32.0593 17.4871 0.502437 1944 32.5768 17.8276 0.344119 1943 32.9617 18.0811 0.256303 1942 33.3466 18.3417 0.263417 1941 33.9194 18.7295 0.392101 1940 34.5013 19.1183 0.393252 1939 35.0831 19.5082 0.394319 1938 35.6291 19.8772 0.373416 1937 35.9603 20.1012 0.226689 1936 36.5404 20.4974 0.401083 1935 37.0237 20.8285 0.33506 1934 37.4802 21.1447 0.32032 1933 38.0531 21.5422 0.402472 1932 38.5364 21.879 0.341255 1931 39.1809 22.3307 0.457705 1930 39.6284 22.648 0.321571 1929 39.9865 22.9019 0.257368 1928 40.7283 23.4027 0.507796 1927 41.2564 23.7641 0.366611 1926 41.5339 23.9571 0.195621 1925 42.062 24.3245 0.372788 1924 42.3664 24.5388 0.217422 1923 42.8229 24.8601 0.326124 1922 43.2167 25.1389 0.282904 1921 43.709 25.4889 0.355382 1920 44.0133 25.7053 0.21973 1919 44.4072 25.9893 0.288397 1918 44.8799 26.3301 0.346162 1917 45.399 26.706 0.381829 1916 46.0883 27.2055 0.507629 1915 46.5985 27.5738 0.374457 1914 47.046 27.8968 0.328313 1913 47.4757 28.2044 0.312846 1912 48.0396 28.6084 0.410844 1911 48.4334 28.8954 0.29202 1910 48.7825 29.15 0.258911 1909 49.0666 29.3575 0.211182 1908 49.4783 29.6626 0.31051 1907 50.0602 30.0937 0.438958 1906 50.3108 30.2787 0.188278 1905 50.8747 30.6948 0.42377 1904 51.0985 30.8601 0.16834 1903 51.6355 31.2585 0.405912 1902 52.1368 31.6305 0.379012 1901 52.6022 31.9758 0.351942 1900 53.1124 32.3552 0.386664 1899 53.7648 32.8568 0.511636 1898 54.0602 33.0841 0.231695 1897 54.3824 33.3285 0.249368 1896 54.7941 33.6406 0.318336 1895 55.2148 33.9613 0.327208 1894 55.6266 34.2797 0.324897 1893 56.1457 34.6808 0.409617 1892 56.6112 35.0402 0.366918 1891 57.184 35.4827 0.451815 1890 57.5941 35.8009 0.325067 1889 57.9969 36.1134 0.319341 1888 58.4534 36.464 0.358265 1887 59.1515 36.9974 0.545216 1886 59.7065 37.437 0.449473 1885 60.1898 37.8197 0.391454 1884 60.6642 38.1944 0.383372 1883 60.9596 38.4278 0.238753 1882 61.2908 38.6891 0.267406 1881 61.8434 39.1241 0.445131 1880 62.3447 39.5196 0.404954 1879 63.2129 40.209 0.706109 1878 63.6605 40.5649 0.364514 1877 64.117 40.9277 0.371855 1876 64.5019 41.234 0.313886 1875 64.9763 41.6116 0.387097 1874 65.2359 41.8184 0.211965 1873 65.7013 42.1935 0.384635 1872 66.131 42.5398 0.355205 1871 66.4151 42.7706 0.236741 1870 66.9074 43.1724 0.412199 1869 67.2833 43.4792 0.314939 1868 67.6861 43.8099 0.339424 1867 68.1784 44.2141 0.414943 1866 68.5722 44.5359 0.330559 1865 69.0914 44.9597 0.435188 1864 69.3689 45.1868 0.233331 1863 69.9417 45.6582 0.48438 1862 70.264 45.9234 0.272592 1861 70.7092 46.2877 0.37446 1860 71.1478 46.6464 0.368909 1859 71.479 46.9207 0.282042 1858 71.9981 47.3526 0.444238 1857 72.2487 47.561 0.214452 1856 72.8664 48.0694 0.523184 1855 73.2692 48.401 0.341218 1854 73.6003 48.6722 0.27916 1853 74.2001 49.1634 0.505859 1852 74.6387 49.5259 0.373408 1851 75.0129 49.8357 0.319193 1850 75.3888 50.1477 0.321443 1849 76.0691 50.7157 0.585454 1848 76.4271 51.0147 0.308294 1847 76.8389 51.3591 0.354995 1846 77.2954 51.7407 0.393623 1845 77.5639 51.9668 0.233207 1844 77.9846 52.321 0.36548 1843 78.3158 52.5999 0.287778 1842 78.6201 52.857 0.265364 1841 78.9603 53.1445 0.296722 1840 79.4168 53.5307 0.398771 1839 79.9688 53.9994 0.484057 1838 80.2731 54.2578 0.266886 1837 80.7117 54.6301 0.384693 1836 80.9086 54.7973 0.172717 1835 81.5173 55.3095 0.529479 1834 81.9559 55.6735 0.376385 1833 82.1438 55.8295 0.161262 1832 82.5108 56.1369 0.317842 1831 82.8957 56.4613 0.335595 1830 83.3164 56.8161 0.367031 1829 83.6834 57.1263 0.320898 1828 84.131 57.5044 0.391462 1827 84.4956 57.8147 0.321227 1826 84.8268 58.0976 0.292861 1825 85.2117 58.4264 0.340413 1824 85.5339 58.7009 0.284404 1823 85.9278 59.0366 0.347649 1822 86.3306 59.38 0.355897 1821 86.6886 59.6868 0.317973 1820 87.0645 60.0089 0.333937 1819 87.4763 60.3623 0.366324 1818 87.7001 60.5546 0.199333 1817 88.076 60.8774 0.334871 1816 88.3893 61.1448 0.277375 1815 88.7015 61.4083 0.273367 1814 89.1132 61.7558 0.360567 1813 89.5787 62.1517 0.410881 1812 89.883 62.4116 0.269769 1811 90.2769 62.7482 0.349538 1810 90.9034 63.2882 0.5609 1809 91.1272 63.4812 0.200389 1808 91.3957 63.7115 0.239331 1807 91.8343 64.0861 0.38926 1806 92.076 64.2925 0.214538 1805 92.5146 64.6667 0.388881 1804 92.9598 65.0459 0.394369 1803 93.4432 65.4579 0.428476 1802 93.846 65.8014 0.35741 1801 94.1682 66.0763 0.285941 1800 94.6068 66.4539 0.392971 1799 95.2065 66.9726 0.539986 1798 95.4034 67.1432 0.177562 1797 95.8152 67.5006 0.372227 1796 96.2359 67.8659 0.380357 1795 96.5491 68.1397 0.285316 1794 97.0235 68.5558 0.433541 1793 97.3613 68.852 0.308752 1792 97.6836 69.1324 0.292262 1791 98.1669 69.5529 0.438369 1790 98.4534 69.8017 0.259476 1789 98.7756 70.0807 0.291006 1788 99.1068 70.3676 0.299188 1787 99.3843 70.6079 0.250792 1786 99.805 70.9735 0.381523 1785 100.253 71.3629 0.40638 1784 100.628 71.6866 0.337974 1783 100.924 71.9414 0.266106 1782 101.371 72.3263 0.401951 1781 101.728 72.6365 0.324039 1780 102.095 72.9554 0.333217 1779 102.399 73.2196 0.276021 1778 102.65 73.4372 0.227441 1777 103.044 73.7788 0.357093 1776 103.419 74.104 0.339941 1775 103.885 74.508 0.422538 1774 104.431 74.9813 0.49522 1773 104.673 75.1912 0.219522 1772 105.165 75.6177 0.446418 1771 105.478 75.8886 0.283562 1770 105.872 76.2271 0.354323 1769 106.388 76.6704 0.464164 1768 106.63 76.8819 0.221588 1767 106.854 77.0786 0.205994 1766 107.203 77.385 0.321007 1765 107.48 77.6285 0.255075 1764 108.089 78.1668 0.564302 1763 108.447 78.4833 0.331789 1762 108.724 78.7276 0.256174 1761 109.065 79.0283 0.315399 1760 109.503 79.4144 0.405019 1759 109.933 79.7916 0.3957 1758 110.228 80.0503 0.271513 1757 110.515 80.3021 0.264189 1756 110.808 80.559 0.269736 1755 111.076 80.794 0.246756 1754 111.416 81.0922 0.313108 1753 111.891 81.5084 0.437101 1752 112.356 81.9157 0.427946 1751 112.669 82.1923 0.290635 1750 112.965 82.4548 0.275921 1749 113.359 82.8043 0.367353 1748 113.681 83.0874 0.29761 1747 114.093 83.4491 0.38038 1746 114.531 83.8339 0.404745 1745 114.997 84.244 0.431464 1744 115.326 84.5336 0.304672 1743 115.666 84.8351 0.317357 1742 115.952 85.0891 0.26734 1741 116.435 85.5178 0.451416 1740 116.811 85.8501 0.350032 1739 117.223 86.2143 0.383632 1738 117.59 86.5397 0.342809 1737 118.011 86.9139 0.394421 1736 118.324 87.1922 0.29329 1735 118.521 87.3666 0.183913 1734 118.807 87.6189 0.265969 1733 119.174 87.9427 0.341365 1732 119.701 88.4086 0.491471 1731 120.068 88.7337 0.343049 1730 120.471 89.091 0.377088 1729 120.802 89.3867 0.311987 1728 121.304 89.835 0.473297 1727 121.599 90.0964 0.275981 1726 122.082 90.5214 0.448903 1725 122.449 90.8442 0.341071 1724 122.781 91.1354 0.307654 1723 123.04 91.3625 0.240041 1722 123.434 91.7083 0.365334 1721 123.808 92.0384 0.349378 1720 124.085 92.2832 0.258803 1719 124.452 92.6078 0.342755 1718 124.846 92.9535 0.365748 1717 125.356 93.401 0.473563 1716 125.66 93.6688 0.283259 1715 125.947 93.921 0.267695 1714 126.278 94.2135 0.308792 1713 126.484 94.3941 0.19184 1712 126.887 94.7472 0.37382 1711 127.128 94.9581 0.223579 1710 127.603 95.3753 0.441904 1709 127.988 95.7146 0.359281 1708 128.361 96.0429 0.348155 1707 128.612 96.2639 0.234313 1706 128.782 96.4134 0.158713 1705 129.158 96.7453 0.351107 1704 129.597 97.1314 0.410241 1703 130.053 97.534 0.426444 1702 130.429 97.8659 0.351972 1701 130.921 98.3061 0.467335 1700 131.226 98.5784 0.289759 1699 131.485 98.8104 0.246093 1698 131.807 99.0984 0.306009 1697 132.237 99.4835 0.408744 1696 132.40 99.6293 0.154956 1695 132.577 99.787 0.167009 1694 132.923 100.093 0.325551 1693 133.353 100.474 0.404683 1692 133.792 100.865 0.416293 1691 134.266 101.289 0.450794 1690 134.651 101.632 0.364822 1689 135.027 101.966 0.354553 1688 135.322 102.227 0.278218 1687 135.716 102.577 0.372417 1686 136.074 102.896 0.338887 1685 136.468 103.246 0.373048 1684 136.79 103.524 0.295317 1683 137.256 103.925 0.427405 1682 137.683 104.295 0.394928 1681 138.005 104.577 0.299975 1680 138.48 104.992 0.44278 1679 138.811 105.285 0.311906 1678 139.473 105.87 0.624095 1677 139.76 106.125 0.272551 1676 140.055 106.389 0.280194 1675 140.395 106.691 0.322997 1674 140.664 106.93 0.254776 1673 141.174 107.382 0.482629 1672 141.523 107.69 0.328345 1671 141.917 108.031 0.364581 1670 142.12 108.207 0.187863 1669 142.549 108.581 0.400037 1668 142.979 108.964 0.408722 1667 143.283 109.235 0.289005 1666 143.606 109.519 0.304733 1665 143.928 109.802 0.301723 1664 144.223 110.06 0.276468 1663 144.653 110.439 0.404855 1662 145.047 110.787 0.372942 1661 145.279 110.993 0.219629 1660 145.673 111.345 0.376474 1659 145.897 111.547 0.215626 1658 146.479 112.069 0.559592 1657 146.727 112.286 0.231707 1656 147.103 112.613 0.35137 1655 147.658 113.099 0.520001 1654 147.891 113.304 0.218837 1653 148.159 113.538 0.251746 1652 148.508 113.843 0.326593 1651 148.84 114.131 0.308601 1650 149.171 114.418 0.307726 1649 149.421 114.636 0.234492 1648 149.833 115.006 0.395899 1647 150.334 115.455 0.481575 1646 150.719 115.8 0.370242 1645 151.077 116.121 0.344346