Southern Greenland winter temperature index 1245 AD - 1970 AD. Please use the following reference: Vinther B. M., S. J. Johnsen, K. K. Andersen, H. B. Clausen and A. W. Hansen, NAO signal recorded in the stable isotopes of Greenland ice cores, Geophysical Research Letters, vol. 30, no. 1387, doi:10.1029/2002GL016193, 2003. The following time series is referred to as the PC1 time series in the paper. It is based on winter delta-O18 data from 7 Greenland ice cores (Crete, Dye3 71, Dye3 79, GRIP 89-1, GRIP 93, Milcent, Renland). All winters are dated according to the month of January. The time series has zero mean and standard deviation one. 1245 0.572 1246 0.450 1247 -0.284 1248 -0.380 1249 0.025 1250 2.373 1251 -0.485 1252 0.179 1253 0.031 1254 1.712 1255 0.910 1256 0.523 1257 0.389 1258 0.454 1259 -0.501 1260 -1.039 1261 -0.621 1262 -0.995 1263 -1.112 1264 -1.092 1265 -1.219 1266 -0.119 1267 -0.504 1268 -0.978 1269 0.910 1270 0.249 1271 -0.817 1272 0.647 1273 0.364 1274 0.343 1275 0.647 1276 1.250 1277 -1.880 1278 -0.279 1279 -0.965 1280 2.258 1281 0.854 1282 -0.094 1283 0.777 1284 -1.165 1285 -0.178 1286 1.259 1287 0.210 1288 -1.067 1289 -0.852 1290 0.872 1291 -0.577 1292 -0.105 1293 -1.204 1294 -0.261 1295 0.770 1296 0.153 1297 -0.085 1298 -1.085 1299 -0.604 1300 0.329 1301 0.257 1302 -0.716 1303 0.688 1304 -0.023 1305 0.510 1306 1.013 1307 0.471 1308 2.186 1309 0.250 1310 -1.118 1311 0.025 1312 0.018 1313 -1.300 1314 -1.643 1315 0.326 1316 0.524 1317 -0.689 1318 -0.142 1319 -1.205 1320 -0.130 1321 0.019 1322 -1.993 1323 -0.991 1324 0.191 1325 0.737 1326 1.720 1327 0.266 1328 -0.768 1329 0.512 1330 0.218 1331 -0.407 1332 -1.077 1333 1.343 1334 -0.402 1335 0.704 1336 -0.101 1337 -1.920 1338 -0.301 1339 1.491 1340 -0.343 1341 0.203 1342 -0.205 1343 0.032 1344 -0.091 1345 -0.110 1346 -0.276 1347 0.636 1348 1.190 1349 -0.245 1350 0.759 1351 -0.870 1352 -1.796 1353 -0.898 1354 0.660 1355 1.686 1356 -0.471 1357 -1.182 1358 0.838 1359 0.438 1360 0.207 1361 0.388 1362 0.085 1363 0.654 1364 -1.274 1365 -0.283 1366 0.016 1367 -1.285 1368 -0.493 1369 1.146 1370 -0.067 1371 0.174 1372 -0.077 1373 -1.016 1374 -1.393 1375 -1.344 1376 -0.936 1377 -0.474 1378 -0.102 1379 -0.265 1380 -1.884 1381 0.044 1382 1.179 1383 0.192 1384 0.561 1385 0.323 1386 0.236 1387 -0.345 1388 0.870 1389 1.453 1390 0.631 1391 1.008 1392 -0.411 1393 -0.219 1394 0.486 1395 2.046 1396 1.004 1397 1.040 1398 0.074 1399 0.898 1400 0.238 1401 -0.482 1402 0.122 1403 -0.350 1404 -0.606 1405 -0.503 1406 0.489 1407 0.178 1408 -0.998 1409 0.723 1410 0.953 1411 0.917 1412 0.464 1413 -0.363 1414 0.993 1415 -0.101 1416 0.332 1417 0.866 1418 0.742 1419 0.772 1420 0.069 1421 -0.382 1422 0.385 1423 -0.209 1424 0.307 1425 -0.639 1426 0.499 1427 -0.447 1428 0.258 1429 -1.280 1430 -0.215 1431 -0.614 1432 0.767 1433 -0.141 1434 -0.305 1435 -0.511 1436 0.017 1437 0.536 1438 -0.514 1439 -0.932 1440 -0.939 1441 0.097 1442 -0.610 1443 -0.585 1444 0.165 1445 0.725 1446 1.469 1447 0.144 1448 0.269 1449 0.855 1450 0.377 1451 -0.303 1452 0.252 1453 -0.208 1454 -0.059 1455 0.072 1456 -0.768 1457 0.227 1458 0.219 1459 0.722 1460 -0.651 1461 -1.488 1462 -1.488 1463 0.492 1464 -0.179 1465 -1.164 1466 -0.336 1467 -0.789 1468 -0.132 1469 1.728 1470 0.451 1471 -1.602 1472 -0.924 1473 0.872 1474 -1.074 1475 -0.067 1476 0.500 1477 -0.069 1478 -0.118 1479 1.706 1480 -0.265 1481 0.265 1482 -1.524 1483 -0.674 1484 0.867 1485 -1.087 1486 0.614 1487 0.495 1488 -0.105 1489 1.927 1490 0.635 1491 0.730 1492 0.160 1493 -0.101 1494 -0.117 1495 -1.686 1496 1.582 1497 -0.546 1498 -1.118 1499 0.383 1500 -1.291 1501 2.454 1502 0.743 1503 -0.478 1504 0.167 1505 -0.453 1506 -0.987 1507 1.079 1508 -0.222 1509 -0.387 1510 1.460 1511 -0.110 1512 -0.728 1513 -0.571 1514 1.997 1515 0.407 1516 1.177 1517 0.517 1518 -1.066 1519 -0.589 1520 0.569 1521 -0.974 1522 1.532 1523 0.247 1524 -0.217 1525 -1.184 1526 -0.829 1527 -0.117 1528 -0.578 1529 0.037 1530 0.682 1531 0.455 1532 -0.466 1533 0.301 1534 -1.139 1535 -0.764 1536 -1.819 1537 1.501 1538 -1.539 1539 -0.017 1540 -0.577 1541 -0.467 1542 -0.970 1543 -1.276 1544 -0.376 1545 0.603 1546 0.533 1547 -0.005 1548 -1.196 1549 0.917 1550 2.109 1551 -0.529 1552 1.732 1553 1.274 1554 -0.120 1555 0.519 1556 1.080 1557 0.039 1558 -1.380 1559 -0.570 1560 -0.837 1561 -0.950 1562 0.115 1563 0.313 1564 -1.092 1565 -0.373 1566 0.296 1567 1.543 1568 0.425 1569 1.455 1570 0.652 1571 -0.740 1572 -0.296 1573 1.073 1574 -0.286 1575 -0.177 1576 -0.640 1577 -1.180 1578 -0.009 1579 0.693 1580 0.568 1581 -0.079 1582 1.876 1583 1.070 1584 -0.735 1585 -1.074 1586 1.116 1587 1.377 1588 -0.104 1589 -0.605 1590 0.013 1591 0.116 1592 -0.698 1593 -0.473 1594 0.640 1595 0.592 1596 0.242 1597 0.927 1598 -1.426 1599 0.439 1600 -0.102 1601 0.950 1602 -0.738 1603 -0.297 1604 0.272 1605 -1.427 1606 0.762 1607 -1.289 1608 1.292 1609 -0.401 1610 0.016 1611 -0.042 1612 0.592 1613 0.259 1614 -0.087 1615 1.344 1616 0.010 1617 -0.174 1618 0.661 1619 0.298 1620 0.890 1621 1.504 1622 -0.703 1623 -0.007 1624 1.542 1625 -0.820 1626 -0.011 1627 -1.286 1628 0.409 1629 -0.607 1630 -0.538 1631 0.161 1632 -1.711 1633 -1.108 1634 -0.954 1635 0.051 1636 -1.377 1637 -1.049 1638 -0.712 1639 0.838 1640 0.271 1641 0.423 1642 -1.964 1643 -0.756 1644 -0.169 1645 -1.908 1646 -0.179 1647 1.317 1648 0.219 1649 1.936 1650 1.325 1651 0.048 1652 0.562 1653 -1.432 1654 -0.385 1655 0.681 1656 -1.463 1657 1.658 1658 0.723 1659 -1.385 1660 1.150 1661 -0.469 1662 -1.547 1663 1.250 1664 0.777 1665 1.069 1666 1.314 1667 0.803 1668 -0.326 1669 0.035 1670 1.441 1671 -2.025 1672 -1.185 1673 0.050 1674 -0.094 1675 0.091 1676 -0.288 1677 -0.636 1678 -0.086 1679 0.702 1680 -0.667 1681 -0.175 1682 -0.273 1683 -0.968 1684 1.399 1685 -0.227 1686 -0.070 1687 0.795 1688 -1.436 1689 -1.198 1690 0.560 1691 0.003 1692 1.718 1693 1.026 1694 -0.088 1695 1.183 1696 -0.643 1697 0.394 1698 0.403 1699 -2.332 1700 -2.417 1701 -1.406 1702 -0.270 1703 -1.609 1704 -0.995 1705 -1.657 1706 -1.104 1707 0.028 1708 -0.336 1709 1.091 1710 1.145 1711 -0.056 1712 0.393 1713 0.423 1714 0.029 1715 0.547 1716 1.527 1717 1.028 1718 -0.300 1719 -0.329 1720 -1.089 1721 -1.193 1722 -1.452 1723 -2.141 1724 -0.652 1725 -0.257 1726 0.163 1727 1.323 1728 0.851 1729 0.943 1730 1.846 1731 1.791 1732 2.102 1733 0.085 1734 -0.670 1735 -2.363 1736 0.133 1737 -2.613 1738 -2.227 1739 0.490 1740 1.245 1741 0.916 1742 0.839 1743 -0.668 1744 0.309 1745 0.723 1746 -0.769 1747 0.245 1748 0.656 1749 0.442 1750 -0.475 1751 0.210 1752 0.247 1753 0.635 1754 -1.132 1755 0.912 1756 -2.277 1757 -1.108 1758 0.318 1759 -0.960 1760 1.208 1761 -2.921 1762 0.561 1763 0.285 1764 -0.178 1765 0.858 1766 0.491 1767 0.220 1768 -0.060 1769 0.438 1770 -0.008 1771 -0.098 1772 1.440 1773 0.829 1774 0.083 1775 1.893 1776 1.287 1777 -0.351 1778 -0.797 1779 -0.336 1780 1.132 1781 -0.816 1782 -0.358 1783 -0.373 1784 1.252 1785 1.973 1786 0.975 1787 2.021 1788 0.260 1789 1.981 1790 -0.268 1791 -1.142 1792 0.737 1793 -0.568 1794 -2.443 1795 1.646 1796 0.272 1797 1.610 1798 -0.454 1799 0.708 1800 1.379 1801 1.492 1802 -0.246 1803 0.179 1804 0.806 1805 0.394 1806 1.240 1807 1.778 1808 2.246 1809 1.845 1810 -0.105 1811 -0.254 1812 0.930 1813 -1.086 1814 -1.690 1815 -0.342 1816 1.210 1817 -2.406 1818 -2.626 1819 -1.347 1820 0.206 1821 0.412 1822 -1.309 1823 -0.246 1824 1.952 1825 -1.524 1826 -1.928 1827 -0.389 1828 0.360 1829 2.188 1830 1.067 1831 1.345 1832 0.500 1833 -1.207 1834 -1.425 1835 -2.195 1836 -1.080 1837 0.187 1838 0.660 1839 -1.529 1840 1.096 1841 0.766 1842 -0.672 1843 1.534 1844 -1.042 1845 -0.324 1846 0.196 1847 2.065 1848 -0.578 1849 -0.201 1850 1.650 1851 1.168 1852 2.035 1853 0.967 1854 0.353 1855 -0.290 1856 1.468 1857 -1.815 1858 -1.010 1859 -0.524 1860 0.225 1861 0.398 1862 0.220 1863 -2.450 1864 -1.577 1865 -1.045 1866 -1.161 1867 0.180 1868 -0.312 1869 -0.588 1870 -0.666 1871 0.364 1872 0.103 1873 0.451 1874 -1.168 1875 1.221 1876 1.670 1877 -0.491 1878 -0.137 1879 1.387 1880 0.523 1881 1.045 1882 -1.360 1883 -0.350 1884 -0.826 1885 -1.838 1886 -1.594 1887 0.342 1888 2.813 1889 -0.642 1890 -1.466 1891 -0.993 1892 0.014 1893 1.969 1894 -1.489 1895 1.275 1896 -0.109 1897 0.253 1898 -1.860 1899 -0.531 1900 -1.719 1901 0.776 1902 -0.229 1903 -1.325 1904 0.934 1905 -1.985 1906 -2.205 1907 -2.037 1908 -0.506 1909 0.312 1910 -0.357 1911 -0.703 1912 0.771 1913 -1.112 1914 -1.013 1915 -1.339 1916 0.861 1917 2.781 1918 -1.649 1919 -2.461 1920 -0.518 1921 -2.140 1922 -0.624 1923 1.430 1924 -0.562 1925 -0.431 1926 1.147 1927 -1.765 1928 -0.519 1929 1.207 1930 -0.193 1931 -0.113 1932 0.516 1933 -0.468 1934 -0.207 1935 0.844 1936 0.251 1937 -0.798 1938 0.004 1939 0.163 1940 1.941 1941 0.130 1942 0.178 1943 -0.345 1944 -0.134 1945 0.217 1946 1.525 1947 2.457 1948 0.122 1949 -0.677 1950 -0.336 1951 0.432 1952 -0.472 1953 0.485 1954 0.651 1955 -0.157 1956 0.952 1957 -0.648 1958 0.943 1959 0.378 1960 0.960 1961 0.372 1962 0.035 1963 1.368 1964 1.139 1965 0.353 1966 0.278 1967 -1.098 1968 -1.759 1969 1.111 1970 1.569