Bighorn Basin Precipitation Reconstruction --------------------------------------------------------------------- NOAA Paleoclimatology Program and World Data Center for Paleoclimatology, Boulder --------------------------------------------------------------------- NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!! NAME OF DATA SET: Bighorn Basin Precipitation Reconstruction LAST UPDATE: 6/2005 (Original Receipt by WDC Paleo) CONTRIBUTORS: Stephen Gray, U.S. Geological Survey; Christopher Fastie, Middlebury College; Steve Jackson, University of Wyoming; Julio Betancourt, U.S. Geological Survey. IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2005-044 SUGGESTED DATA CITATION: Gray, S., et al., 2005. Bighorn Basin Precipitation Reconstruction. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series #2005-044. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Gray, S.T., C. Fastie, S.T. Jackson, and J.L. Betancourt. 2004. Tree-ring based reconstructions of precipitation in the Bighorn Basin, Wyoming since A.D. 1260. Journal of Climate, 17:3855-3865. ABSTRACT: Cores and cross-sections from 79 Douglas-fir (Pseudotsuga menziesii) and limber pine (Pinus flexilis) trees at four sites in the Bighorn Basin of north-central Wyoming and south-central Montana were used to develop a proxy for annual (June-June) precipitation spanning AD 1260-1998. The reconstruction exhibits considerable nonstationarity, and the instrumental era (post-1900), in particular, fails to capture the full range of precipitation variability experienced in the past ~750 years. Both single-year and decadal-scale dry events were more severe before 1900. Dry spells in the late 13th and 16th Centuries surpass both the magnitude and duration of any droughts in the Bighorn Basin after 1900. Precipitation variability appears to shift to a higher-frequency mode after 1750, with 15-20 year droughts becoming rare. GEOGRAPHIC REGION: Bighorn Basin, Wyoming and Montana, Central Rocky Mountains, USA PERIOD OF RECORD: 1260-1998 AD DESCRIPTION: Total annual (previous June-current June) precipitation reconstructed from tree rings in and around the Bighorn Basin. FUNDING SOURCES: National Science Foundation, U.S. Geological Survey, and Wyoming Water Development Commission. DATA: Reconstructed precipitation for the Bighorn Basin Region (millimeters) Reconstructed ("RECON") and instrumental ("OBS") values are shown. Year RECON OBS 1260 329.77 1261 307.64 1262 208.11 1263 184.94 1264 251.23 1265 293.81 1266 274.99 1267 250.36 1268 255.58 1269 261.34 1270 207.01 1271 266.92 1272 232.73 1273 254.55 1274 164.07 1275 264.59 1276 253.99 1277 264.96 1278 181.50 1279 231.37 1280 160.79 1281 256.35 1282 256.22 1283 272.40 1284 273.86 1285 234.41 1286 263.94 1287 307.66 1288 225.21 1289 295.30 1290 275.76 1291 231.83 1292 236.86 1293 284.04 1294 254.50 1295 322.35 1296 274.53 1297 255.41 1298 268.18 1299 291.03 1300 283.72 1301 257.92 1302 246.97 1303 236.80 1304 186.20 1305 275.19 1306 229.28 1307 225.89 1308 270.47 1309 293.13 1310 276.13 1311 288.04 1312 309.08 1313 286.85 1314 310.72 1315 229.76 1316 270.95 1317 210.99 1318 258.56 1319 273.03 1320 236.40 1321 282.68 1322 313.25 1323 266.74 1324 221.97 1325 295.24 1326 241.91 1327 236.73 1328 236.85 1329 260.19 1330 203.14 1331 273.72 1332 322.19 1333 280.27 1334 256.92 1335 250.91 1336 219.44 1337 280.92 1338 265.15 1339 287.22 1340 246.47 1341 256.95 1342 249.31 1343 311.13 1344 249.99 1345 305.90 1346 267.58 1347 245.36 1348 250.28 1349 289.03 1350 305.94 1351 279.54 1352 252.16 1353 285.90 1354 239.89 1355 246.46 1356 272.98 1357 240.25 1358 234.81 1359 276.99 1360 193.55 1361 223.09 1362 257.40 1363 246.96 1364 295.95 1365 264.94 1366 243.31 1367 229.91 1368 287.82 1369 224.51 1370 294.16 1371 260.00 1372 307.39 1373 252.60 1374 285.32 1375 231.61 1376 277.33 1377 222.52 1378 279.50 1379 251.29 1380 200.63 1381 206.30 1382 230.09 1383 241.73 1384 259.77 1385 241.43 1386 264.55 1387 269.98 1388 178.57 1389 265.97 1390 235.55 1391 319.32 1392 259.33 1393 230.30 1394 288.34 1395 245.69 1396 269.29 1397 250.16 1398 168.22 1399 223.38 1400 229.88 1401 206.41 1402 311.02 1403 303.03 1404 286.09 1405 232.63 1406 298.10 1407 244.93 1408 249.98 1409 320.33 1410 240.70 1411 278.29 1412 248.82 1413 210.31 1414 268.13 1415 240.29 1416 218.83 1417 204.50 1418 276.28 1419 297.66 1420 315.43 1421 301.70 1422 256.37 1423 169.51 1424 302.24 1425 327.01 1426 274.07 1427 258.16 1428 295.36 1429 213.72 1430 267.18 1431 263.45 1432 258.59 1433 277.18 1434 216.57 1435 239.44 1436 211.32 1437 222.15 1438 212.01 1439 285.26 1440 261.25 1441 273.88 1442 300.34 1443 285.13 1444 223.62 1445 278.31 1446 251.33 1447 258.35 1448 210.58 1449 243.56 1450 256.42 1451 305.32 1452 314.74 1453 321.36 1454 332.15 1455 289.51 1456 292.84 1457 339.75 1458 246.48 1459 286.86 1460 140.22 1461 289.81 1462 223.10 1463 261.70 1464 256.26 1465 293.86 1466 234.79 1467 274.40 1468 211.95 1469 278.14 1470 224.84 1471 226.54 1472 269.62 1473 300.64 1474 186.12 1475 211.49 1476 249.04 1477 244.76 1478 270.45 1479 249.96 1480 315.02 1481 268.35 1482 261.43 1483 262.26 1484 332.48 1485 262.84 1486 252.58 1487 227.27 1488 224.97 1489 203.24 1490 259.71 1491 266.06 1492 263.67 1493 266.80 1494 295.63 1495 213.85 1496 265.59 1497 287.33 1498 229.15 1499 179.85 1500 285.65 1501 248.89 1502 198.76 1503 220.52 1504 284.10 1505 228.26 1506 277.18 1507 283.47 1508 307.64 1509 215.64 1510 348.20 1511 286.10 1512 153.04 1513 194.50 1514 266.66 1515 257.69 1516 271.51 1517 239.90 1518 261.72 1519 244.58 1520 267.58 1521 317.71 1522 241.39 1523 316.16 1524 305.91 1525 334.73 1526 280.70 1527 281.75 1528 194.55 1529 306.91 1530 287.54 1531 211.42 1532 177.18 1533 200.14 1534 190.33 1535 246.69 1536 256.48 1537 282.13 1538 271.51 1539 327.61 1540 287.29 1541 255.73 1542 230.42 1543 242.06 1544 246.39 1545 253.35 1546 260.60 1547 198.25 1548 246.26 1549 285.24 1550 283.46 1551 276.13 1552 280.29 1553 297.34 1554 282.06 1555 328.30 1556 203.84 1557 273.54 1558 298.42 1559 190.55 1560 311.99 1561 269.14 1562 278.73 1563 212.23 1564 339.99 1565 275.26 1566 299.75 1567 253.87 1568 241.97 1569 186.44 1570 309.24 1571 261.77 1572 248.29 1573 268.49 1574 277.96 1575 273.42 1576 243.00 1577 303.92 1578 299.12 1579 282.40 1580 141.53 1581 247.58 1582 248.71 1583 269.28 1584 240.03 1585 238.31 1586 246.71 1587 213.78 1588 275.92 1589 243.55 1590 256.46 1591 224.44 1592 227.97 1593 188.92 1594 248.57 1595 240.03 1596 259.61 1597 240.46 1598 198.31 1599 293.63 1600 261.84 1601 256.98 1602 266.04 1603 268.13 1604 266.15 1605 200.36 1606 251.63 1607 260.24 1608 232.35 1609 280.00 1610 233.39 1611 372.01 1612 230.93 1613 293.47 1614 214.96 1615 299.90 1616 251.74 1617 325.99 1618 205.75 1619 394.68 1620 292.45 1621 274.69 1622 266.37 1623 278.45 1624 264.53 1625 273.43 1626 237.64 1627 211.89 1628 333.10 1629 291.61 1630 204.66 1631 220.24 1632 196.73 1633 298.28 1634 279.60 1635 272.06 1636 320.62 1637 150.46 1638 288.39 1639 244.23 1640 298.26 1641 281.76 1642 277.52 1643 282.88 1644 236.35 1645 229.41 1646 307.00 1647 282.97 1648 170.57 1649 251.16 1650 219.89 1651 257.49 1652 245.87 1653 250.70 1654 233.69 1655 281.47 1656 271.43 1657 251.90 1658 244.85 1659 195.67 1660 273.47 1661 297.23 1662 271.21 1663 226.46 1664 288.56 1665 177.64 1666 292.87 1667 251.96 1668 227.16 1669 257.58 1670 223.98 1671 224.74 1672 262.88 1673 283.59 1674 268.60 1675 288.69 1676 293.51 1677 203.90 1678 326.99 1679 273.53 1680 331.46 1681 244.72 1682 293.11 1683 310.58 1684 327.17 1685 284.28 1686 221.97 1687 293.58 1688 252.06 1689 271.55 1690 206.80 1691 278.68 1692 280.01 1693 232.61 1694 290.58 1695 301.44 1696 195.48 1697 233.08 1698 212.63 1699 231.60 1700 263.50 1701 279.84 1702 264.90 1703 208.69 1704 231.29 1705 233.24 1706 243.02 1707 276.95 1708 210.95 1709 276.43 1710 272.02 1711 236.03 1712 279.83 1713 270.28 1714 284.11 1715 286.95 1716 282.37 1717 126.37 1718 174.51 1719 299.76 1720 295.77 1721 224.91 1722 227.98 1723 255.63 1724 287.38 1725 282.93 1726 276.48 1727 280.30 1728 288.04 1729 291.89 1730 264.16 1731 270.80 1732 299.44 1733 315.01 1734 248.85 1735 200.97 1736 256.10 1737 308.33 1738 176.37 1739 247.10 1740 222.17 1741 237.79 1742 253.57 1743 238.09 1744 152.41 1745 222.32 1746 251.28 1747 234.36 1748 275.47 1749 264.35 1750 284.02 1751 286.72 1752 264.36 1753 205.40 1754 240.18 1755 266.43 1756 228.05 1757 260.41 1758 241.06 1759 225.49 1760 247.72 1761 289.96 1762 282.59 1763 264.86 1764 271.58 1765 295.66 1766 278.43 1767 284.72 1768 297.94 1769 235.93 1770 253.44 1771 272.19 1772 292.98 1773 275.89 1774 273.88 1775 281.64 1776 273.85 1777 281.12 1778 274.23 1779 235.05 1780 329.97 1781 245.05 1782 252.10 1783 256.15 1784 253.59 1785 251.41 1786 302.01 1787 290.88 1788 263.14 1789 219.91 1790 254.18 1791 271.29 1792 309.72 1793 265.72 1794 257.34 1795 248.69 1796 298.14 1797 269.96 1798 189.77 1799 277.88 1800 230.33 1801 272.76 1802 266.52 1803 265.11 1804 287.36 1805 223.04 1806 162.79 1807 214.94 1808 235.88 1809 225.61 1810 270.55 1811 282.67 1812 253.00 1813 296.56 1814 269.17 1815 239.44 1816 263.87 1817 295.93 1818 217.61 1819 256.79 1820 294.46 1821 263.59 1822 164.17 1823 242.27 1824 264.13 1825 259.27 1826 268.92 1827 306.60 1828 279.04 1829 250.92 1830 290.58 1831 243.04 1832 253.52 1833 296.49 1834 245.17 1835 308.36 1836 239.83 1837 290.34 1838 256.53 1839 322.38 1840 191.64 1841 308.11 1842 192.00 1843 332.84 1844 281.70 1845 254.56 1846 264.41 1847 263.32 1848 193.72 1849 307.11 1850 229.76 1851 271.28 1852 251.90 1853 304.70 1854 320.70 1855 190.66 1856 248.00 1857 264.49 1858 251.02 1859 271.63 1860 233.50 1861 198.32 1862 240.03 1863 180.86 1864 245.73 1865 172.04 1866 314.42 1867 270.13 1868 262.27 1869 247.90 1870 263.99 1871 254.56 1872 235.77 1873 262.96 1874 265.43 1875 257.94 1876 240.08 1877 310.76 1878 274.96 1879 301.11 1880 267.70 1881 247.64 1882 253.95 1883 219.37 1884 275.66 1885 306.98 1886 285.95 1887 274.02 1888 290.82 1889 235.28 1890 183.52 1891 283.45 1892 256.02 1893 235.60 1894 242.03 1895 256.37 1896 225.53 1897 260.10 1898 272.30 1899 248.97 1900 277.49 1901 275.54 1902 194.20 1903 223.40 1904 271.48 1905 273.69 1906 256.85 1907 295.02 243.84 1908 312.16 294.89 1909 273.73 257.30 1910 262.16 195.58 1911 227.87 186.44 1912 281.39 180.09 1913 273.85 283.46 1914 287.68 283.72 1915 240.48 252.22 1916 290.76 306.83 1917 254.50 230.63 1918 269.38 242.82 1919 216.42 205.49 1920 238.89 162.81 1921 242.30 163.07 1922 220.32 186.94 1923 257.67 232.16 1924 266.75 286.26 1925 247.23 243.84 1926 275.49 241.55 1927 296.52 318.26 1928 304.98 276.86 1929 260.60 326.64 1930 204.21 211.84 1931 280.26 279.40 1932 294.70 333.76 1933 205.71 285.24 1934 193.95 169.93 1935 269.86 216.15 1936 239.87 178.05 1937 294.40 271.78 1938 272.35 298.45 1939 265.10 279.65 1940 241.20 253.24 1941 266.86 309.63 1942 292.66 315.72 1943 262.77 262.38 1944 284.64 342.14 1945 294.43 338.84 1946 281.01 309.88 1947 297.28 301.75 1948 257.58 299.97 1949 300.50 265.43 1950 255.17 227.84 1951 247.19 225.04 1952 248.00 264.16 1953 261.51 186.94 1954 234.10 185.93 1955 228.34 193.04 1956 197.24 205.99 1957 293.60 255.52 1958 229.86 268.48 1959 246.72 261.11 1960 193.95 168.66 1961 251.37 195.83 1962 245.96 293.37 1963 298.01 308.10 1964 264.85 349.76 1965 272.63 300.48 1966 197.22 211.33 1967 294.36 263.91 1968 281.93 315.21 1969 296.00 349.50 1970 266.41 288.04 1971 193.54 245.62 1972 242.54 261.37 1973 270.41 257.30 1974 251.79 268.99 1975 263.85 334.52 1976 292.86 301.50 1977 252.35 232.92 1978 258.54 309.12 1979 243.37 239.52 1980 271.24 228.85 1981 288.79 299.21 1982 286.69 215.39 1983 271.68 313.94 1984 278.41 252.73 1985 200.48 167.89 1986 264.19 265.43 1987 284.31 273.81 1988 266.50 274.07 1989 232.70 194.31 1990 227.80 251.46 1991 281.00 278.13 1992 248.47 352.55 1993 277.15 327.41 1994 251.05 241.81 1995 264.12 287.78 1996 233.16 273.56 1997 254.69 1998 245.19