# Northern Hemisphere Extratropical Temperature Reconstruction # http://www.ncdc.noaa.gov/paleo/pubs/darrigo2006/darrigo2006.html # ftp://ftp.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/n_hem_temp/esper2002_nhem_temp.txt # Index Value from Regional Curve Standardization Chronology # # # Unitless Index Value # Annual # # 831 AD # 1992 AD # Esper, J., E.R. Cook, and F.H. Schweingruber # Esper, J., E.R. Cook, and F.H. Schweingruber. 2002. Low-Frequency Signals in Long Tree-Ring Chronologies for Reconstructing Past Temperature Variability. Science 295:2250-2253. # 80.000 N # 30.000 N # 180.000 E # 180.000 W # # Regional Curve Standardization (RCS) Chronology from tree-rings. The series is not scaled to any observational record (index values only). # # # March 2009, v 1.0.0 # # YearAD Index Value 1992 1.263 1991 1.215 1990 1.317 1989 1.237 1988 1.215 1987 1.167 1986 1.265 1985 1.271 1984 1.332 1983 1.264 1982 1.265 1981 1.216 1980 1.217 1979 1.195 1978 1.212 1977 1.268 1976 1.209 1975 1.169 1974 1.136 1973 1.152 1972 1.082 1971 1.021 1970 1.178 1969 1.315 1968 1.175 1967 1.33 1966 1.154 1965 1.199 1964 1.232 1963 1.212 1962 1.207 1961 1.198 1960 1.248 1959 1.327 1958 1.338 1957 1.292 1956 1.294 1955 1.303 1954 1.229 1953 1.299 1952 1.231 1951 1.196 1950 1.333 1949 1.112 1948 1.324 1947 1.146 1946 1.259 1945 1.253 1944 1.202 1943 1.187 1942 1.224 1941 1.162 1940 1.184 1939 1.147 1938 1.323 1937 1.301 1936 1.255 1935 1.271 1934 1.164 1933 1.157 1932 1.2 1931 1.126 1930 1.178 1929 1.087 1928 1.187 1927 1.199 1926 1.102 1925 1.118 1924 1.144 1923 1.196 1922 1.214 1921 1.122 1920 1.093 1919 1.13 1918 1.094 1917 1.055 1916 1.035 1915 1.132 1914 1.035 1913 0.952 1912 1.021 1911 1.131 1910 1.131 1909 1.194 1908 1.156 1907 1.052 1906 1.13 1905 1.037 1904 1.099 1903 1.022 1902 1.119 1901 1.155 1900 1.071 1899 1.01 1898 1.091 1897 1.183 1896 1.15 1895 1.08 1894 1.055 1893 0.978 1892 1.067 1891 1.092 1890 0.983 1889 0.974 1888 0.963 1887 0.986 1886 1.05 1885 0.936 1884 1.013 1883 1.083 1882 1.091 1881 1.044 1880 1.094 1879 1.039 1878 1.012 1877 1.038 1876 1.009 1875 0.95 1874 0.956 1873 0.942 1872 1.001 1871 1.033 1870 1.04 1869 0.93 1868 1.073 1867 1.038 1866 1.094 1865 1.027 1864 1.027 1863 1.035 1862 1.07 1861 1.178 1860 1.087 1859 1.024 1858 1.043 1857 0.975 1856 1.048 1855 1.026 1854 1.062 1853 1.047 1852 1.097 1851 0.988 1850 0.994 1849 0.984 1848 1.081 1847 0.96 1846 1.065 1845 0.95 1844 0.948 1843 0.888 1842 0.983 1841 0.882 1840 0.942 1839 0.938 1838 0.841 1837 0.854 1836 0.937 1835 0.99 1834 1.03 1833 0.942 1832 1.028 1831 1 1830 0.948 1829 1.02 1828 0.988 1827 1.022 1826 1.041 1825 0.909 1824 0.872 1823 0.944 1822 0.833 1821 0.773 1820 0.815 1819 0.817 1818 0.8 1817 0.884 1816 0.761 1815 0.83 1814 0.854 1813 0.879 1812 0.811 1811 0.953 1810 0.888 1809 1.012 1808 1.04 1807 1.003 1806 1.013 1805 1.045 1804 1.074 1803 1.006 1802 1.057 1801 1.125 1800 0.945 1799 1.07 1798 1.075 1797 1.02 1796 1.029 1795 1.018 1794 1.052 1793 0.971 1792 0.964 1791 1.004 1790 0.982 1789 1.008 1788 0.944 1787 1.049 1786 1.085 1785 1.061 1784 1.092 1783 0.931 1782 0.997 1781 1.067 1780 1.016 1779 1.022 1778 1.079 1777 1.073 1776 0.992 1775 1.104 1774 1.047 1773 1.013 1772 1.036 1771 0.994 1770 0.933 1769 1.006 1768 0.984 1767 1.072 1766 1.077 1765 1.018 1764 0.95 1763 1.08 1762 1.057 1761 1.057 1760 0.997 1759 1 1758 1.02 1757 1.092 1756 1.01 1755 0.949 1754 1.01 1753 0.959 1752 0.993 1751 0.97 1750 0.96 1749 0.923 1748 0.977 1747 1.01 1746 0.94 1745 0.94 1744 0.946 1743 0.937 1742 0.919 1741 0.907 1740 0.905 1739 0.964 1738 0.997 1737 0.965 1736 0.945 1735 0.953 1734 1.034 1733 0.947 1732 1.023 1731 0.985 1730 1.041 1729 1.053 1728 0.994 1727 1.129 1726 0.99 1725 1.093 1724 1.061 1723 0.91 1722 1.027 1721 0.949 1720 0.951 1719 0.971 1718 0.969 1717 0.992 1716 0.974 1715 1.002 1714 0.922 1713 1.002 1712 0.944 1711 0.898 1710 0.882 1709 0.96 1708 0.985 1707 1.02 1706 0.872 1705 0.841 1704 0.924 1703 0.889 1702 0.926 1701 0.842 1700 0.858 1699 0.794 1698 0.953 1697 1.01 1696 0.963 1695 1.066 1694 1.087 1693 1.106 1692 1.023 1691 1.051 1690 0.988 1689 1.029 1688 0.997 1687 0.999 1686 0.982 1685 0.935 1684 0.952 1683 1.043 1682 0.921 1681 0.822 1680 0.916 1679 0.892 1678 0.918 1677 0.85 1676 0.875 1675 0.889 1674 0.915 1673 1.003 1672 1.031 1671 0.972 1670 0.9 1669 0.98 1668 1.005 1667 0.934 1666 1.027 1665 1.025 1664 1.079 1663 0.924 1662 0.995 1661 1.036 1660 1.03 1659 0.973 1658 0.975 1657 0.917 1656 0.972 1655 0.914 1654 0.832 1653 0.835 1652 0.877 1651 0.928 1650 0.904 1649 0.853 1648 0.877 1647 0.766 1646 0.836 1645 0.813 1644 0.692 1643 0.774 1642 0.723 1641 0.797 1640 0.995 1639 0.884 1638 0.863 1637 0.921 1636 0.854 1635 0.838 1634 0.828 1633 0.813 1632 0.828 1631 0.8 1630 0.848 1629 0.887 1628 0.795 1627 0.862 1626 0.863 1625 0.89 1624 0.806 1623 0.82 1622 0.735 1621 0.845 1620 0.8 1619 0.794 1618 0.744 1617 0.872 1616 0.887 1615 0.815 1614 0.84 1613 0.784 1612 0.809 1611 0.84 1610 0.772 1609 0.766 1608 0.782 1607 0.828 1606 0.798 1605 0.82 1604 0.922 1603 0.857 1602 0.745 1601 0.745 1600 0.939 1599 0.989 1598 0.948 1597 0.905 1596 0.867 1595 0.907 1594 0.981 1593 0.873 1592 0.9 1591 0.835 1590 0.897 1589 0.866 1588 0.943 1587 0.957 1586 1.005 1585 0.895 1584 0.947 1583 1.021 1582 0.931 1581 0.897 1580 0.889 1579 0.851 1578 0.938 1577 1.049 1576 0.947 1575 1.118 1574 1.001 1573 1.016 1572 1.016 1571 0.98 1570 1.086 1569 1.112 1568 1.102 1567 1.169 1566 1.159 1565 1.197 1564 1.184 1563 1.13 1562 1.127 1561 1.08 1560 1.114 1559 1.101 1558 1.048 1557 1.096 1556 1.039 1555 0.997 1554 0.997 1553 1.096 1552 1.052 1551 1.038 1550 1.026 1549 1.036 1548 1.082 1547 1.068 1546 1.028 1545 1.064 1544 1.018 1543 0.977 1542 1.099 1541 1.02 1540 1.111 1539 1.157 1538 1.099 1537 1.185 1536 1.106 1535 1.114 1534 1.003 1533 0.971 1532 0.964 1531 0.976 1530 1.009 1529 0.931 1528 1.055 1527 1.134 1526 1.085 1525 1.072 1524 1.067 1523 0.958 1522 1.083 1521 1.07 1520 1.046 1519 1.055 1518 0.922 1517 1.019 1516 0.994 1515 1.004 1514 1.044 1513 1.078 1512 1.14 1511 1.064 1510 1.177 1509 1.046 1508 1.056 1507 1.106 1506 1.046 1505 1.081 1504 1.086 1503 1.011 1502 1.027 1501 1.059 1500 1.02 1499 0.988 1498 0.922 1497 1 1496 1 1495 0.942 1494 0.919 1493 0.976 1492 0.997 1491 0.992 1490 1.088 1489 1.097 1488 0.979 1487 0.977 1486 0.984 1485 0.971 1484 0.906 1483 0.936 1482 0.947 1481 0.898 1480 0.958 1479 0.894 1478 0.979 1477 0.956 1476 1.056 1475 0.981 1474 0.969 1473 0.887 1472 0.894 1471 0.892 1470 0.894 1469 0.887 1468 0.795 1467 0.833 1466 0.799 1465 0.875 1464 0.895 1463 0.859 1462 0.765 1461 0.838 1460 0.792 1459 0.765 1458 0.763 1457 0.842 1456 0.795 1455 0.837 1454 0.867 1453 0.877 1452 0.915 1451 0.939 1450 1.02 1449 0.967 1448 0.928 1447 1.048 1446 0.947 1445 1.082 1444 1.016 1443 1.031 1442 1.042 1441 1.039 1440 1.084 1439 1.086 1438 1.071 1437 1.105 1436 1.065 1435 1.107 1434 1.135 1433 1.063 1432 1.025 1431 1.051 1430 1.04 1429 1.049 1428 1.042 1427 1.009 1426 0.951 1425 1.041 1424 1.025 1423 0.909 1422 0.945 1421 0.925 1420 0.936 1419 0.946 1418 0.929 1417 0.946 1416 0.927 1415 0.968 1414 0.894 1413 0.957 1412 0.94 1411 1.051 1410 1.002 1409 1.058 1408 0.991 1407 1.02 1406 1.055 1405 0.951 1404 0.924 1403 0.948 1402 0.884 1401 0.894 1400 0.873 1399 0.929 1398 0.955 1397 0.925 1396 0.928 1395 0.994 1394 0.931 1393 0.894 1392 0.859 1391 0.89 1390 0.965 1389 1.011 1388 1.039 1387 0.964 1386 0.918 1385 0.985 1384 0.983 1383 0.942 1382 0.969 1381 0.956 1380 0.89 1379 0.878 1378 1.031 1377 0.95 1376 1.039 1375 0.916 1374 0.954 1373 0.942 1372 0.935 1371 0.979 1370 0.926 1369 0.975 1368 0.967 1367 0.98 1366 0.907 1365 0.891 1364 0.896 1363 0.912 1362 0.955 1361 0.869 1360 0.821 1359 0.914 1358 0.882 1357 0.897 1356 0.934 1355 0.874 1354 0.769 1353 0.757 1352 0.777 1351 0.744 1350 0.7 1349 0.751 1348 0.713 1347 0.717 1346 0.785 1345 0.847 1344 0.893 1343 0.942 1342 0.864 1341 0.879 1340 0.821 1339 0.867 1338 0.806 1337 0.858 1336 0.765 1335 0.876 1334 0.914 1333 0.962 1332 0.92 1331 1.028 1330 0.974 1329 1.005 1328 1.072 1327 1.199 1326 1.114 1325 1.07 1324 1.027 1323 1.047 1322 0.999 1321 1.055 1320 0.953 1319 0.963 1318 0.95 1317 1.018 1316 0.934 1315 1.003 1314 1.012 1313 1.034 1312 0.867 1311 0.94 1310 0.95 1309 0.84 1308 0.899 1307 0.874 1306 0.893 1305 0.836 1304 0.912 1303 0.955 1302 0.856 1301 0.945 1300 0.731 1299 0.781 1298 0.78 1297 0.668 1296 0.725 1295 0.751 1294 0.74 1293 0.707 1292 0.855 1291 0.836 1290 0.84 1289 0.844 1288 0.85 1287 0.837 1286 0.878 1285 0.843 1284 0.871 1283 0.957 1282 0.867 1281 0.917 1280 0.84 1279 0.932 1278 0.883 1277 0.899 1276 0.88 1275 0.957 1274 0.877 1273 0.822 1272 0.891 1271 0.851 1270 0.806 1269 0.894 1268 0.876 1267 0.811 1266 0.82 1265 0.803 1264 0.781 1263 0.719 1262 0.898 1261 0.832 1260 0.856 1259 0.763 1258 0.802 1257 0.948 1256 0.908 1255 0.881 1254 0.799 1253 0.992 1252 0.867 1251 0.841 1250 0.882 1249 0.893 1248 0.905 1247 0.802 1246 0.849 1245 0.884 1244 0.811 1243 0.84 1242 0.873 1241 0.899 1240 0.88 1239 0.807 1238 0.738 1237 0.704 1236 0.681 1235 0.711 1234 0.795 1233 0.848 1232 0.858 1231 0.922 1230 0.809 1229 0.998 1228 0.932 1227 0.915 1226 0.954 1225 1.041 1224 1.023 1223 1.025 1222 1.001 1221 0.958 1220 0.885 1219 0.844 1218 0.827 1217 0.773 1216 0.867 1215 0.926 1214 0.896 1213 0.833 1212 0.901 1211 0.872 1210 0.742 1209 0.876 1208 0.856 1207 0.692 1206 0.698 1205 0.789 1204 0.841 1203 0.899 1202 0.923 1201 0.802 1200 0.806 1199 0.978 1198 0.908 1197 0.925 1196 0.845 1195 1.003 1194 0.883 1193 1.005 1192 0.971 1191 0.902 1190 1.036 1189 0.98 1188 1.003 1187 0.943 1186 0.861 1185 0.909 1184 0.979 1183 0.967 1182 0.876 1181 0.959 1180 0.836 1179 0.863 1178 0.905 1177 0.894 1176 0.997 1175 0.99 1174 0.973 1173 0.944 1172 1.001 1171 0.973 1170 0.981 1169 1.087 1168 1.169 1167 1.006 1166 1.047 1165 1.141 1164 1.098 1163 1.099 1162 1.034 1161 0.974 1160 1.085 1159 1.172 1158 0.964 1157 1.04 1156 1.007 1155 1.035 1154 0.896 1153 0.962 1152 0.967 1151 0.811 1150 0.936 1149 0.973 1148 0.966 1147 0.932 1146 0.907 1145 0.847 1144 1.022 1143 1.042 1142 1.074 1141 0.899 1140 0.784 1139 0.932 1138 0.873 1137 0.867 1136 0.793 1135 0.894 1134 0.906 1133 0.926 1132 0.884 1131 0.989 1130 1.017 1129 0.963 1128 1.003 1127 0.977 1126 0.835 1125 0.819 1124 0.828 1123 0.931 1122 0.819 1121 0.807 1120 0.954 1119 0.921 1118 0.885 1117 0.933 1116 1.017 1115 0.911 1114 0.928 1113 1.079 1112 1.063 1111 1.051 1110 0.937 1109 0.991 1108 1.126 1107 1.182 1106 1.087 1105 1.005 1104 1.045 1103 0.922 1102 1.073 1101 1.004 1100 1.031 1099 0.969 1098 0.905 1097 1.114 1096 0.934 1095 1.246 1094 1.318 1093 1.144 1092 1.141 1091 1.239 1090 1.203 1089 1.232 1088 1.09 1087 1.213 1086 1.079 1085 1.19 1084 1.209 1083 1.203 1082 1.195 1081 1.354 1080 1.297 1079 1.224 1078 1.207 1077 1.101 1076 1.168 1075 1.21 1074 1.081 1073 1.022 1072 0.95 1071 0.871 1070 0.892 1069 0.858 1068 0.861 1067 1.048 1066 1.184 1065 1.116 1064 1.119 1063 0.956 1062 1.061 1061 1.089 1060 0.726 1059 0.861 1058 0.943 1057 1.068 1056 0.996 1055 0.949 1054 0.895 1053 0.988 1052 1.119 1051 0.935 1050 1.138 1049 1.085 1048 1.149 1047 0.959 1046 1.075 1045 1.027 1044 1.141 1043 1.143 1042 1.034 1041 1.084 1040 1.128 1039 1.072 1038 1.132 1037 1.149 1036 1.078 1035 1.143 1034 1.162 1033 1.223 1032 1.062 1031 1.206 1030 1.316 1029 1.199 1028 1.313 1027 1.447 1026 1.208 1025 1.015 1024 1.226 1023 1.152 1022 1.237 1021 1.256 1020 1.429 1019 1.249 1018 1.183 1017 1.224 1016 1.211 1015 1.127 1014 1.14 1013 1.077 1012 1.052 1011 1.042 1010 1.067 1009 0.961 1008 1.142 1007 1.254 1006 1.157 1005 1.211 1004 1.118 1003 1.024 1002 1.025 1001 1.22 1000 1.209 999 1.271 998 1.201 997 1.107 996 1.29 995 1.529 994 1.407 993 1.352 992 1.225 991 1.191 990 1.469 989 1.506 988 1.301 987 1.253 986 1.294 985 1.176 984 1.356 983 1.223 982 1.256 981 1.098 980 1.203 979 1.08 978 1.252 977 1.188 976 0.985 975 1.01 974 1.171 973 1.129 972 1.208 971 1.142 970 1.243 969 1.136 968 1.288 967 1.102 966 1.34 965 1.242 964 1.022 963 1.228 962 0.99 961 0.99 960 1.165 959 1.022 958 0.806 957 1.05 956 0.906 955 0.981 954 1.055 953 1.09 952 0.962 951 1.056 950 0.926 949 1.021 948 0.928 947 0.874 946 0.997 945 0.989 944 0.959 943 1.088 942 1 941 1.098 940 0.933 939 1.162 938 1.139 937 1.14 936 1.24 935 1.011 934 1.103 933 1.098 932 1.05 931 1.108 930 0.985 929 1.09 928 1.019 927 1.086 926 1.002 925 0.913 924 1.01 923 0.963 922 0.966 921 0.999 920 0.862 919 0.937 918 0.953 917 0.945 916 0.911 915 1.208 914 0.948 913 0.816 912 0.914 911 0.943 910 0.929 909 0.835 908 0.811 907 0.741 906 0.749 905 0.886 904 0.977 903 0.722 902 0.988 901 1.033 900 1.027 899 1.165 898 1.302 897 1.352 896 1.112 895 1.405 894 1.314 893 1.211 892 1.301 891 1.166 890 1.195 889 1.157 888 1.047 887 1.218 886 0.946 885 1.165 884 0.891 883 1.04 882 1.189 881 1.035 880 1.135 879 1.213 878 1.187 877 1.019 876 1.174 875 1.123 874 1.05 873 1.016 872 1.041 871 0.936 870 0.884 869 0.815 868 0.773 867 0.801 866 0.788 865 0.753 864 0.765 863 0.833 862 0.897 861 0.744 860 0.766 859 0.825 858 0.783 857 0.851 856 0.961 855 0.825 854 0.809 853 1.142 852 0.934 851 1.132 850 1.174 849 1.13 848 0.986 847 0.9 846 0.996 845 1.02 844 1.134 843 1.216 842 1.249 841 1.222 840 1.166 839 1.013 838 1.015 837 0.981 836 0.935 835 0.888 834 0.893 833 0.856 832 0.8 831 0.696