# O'Donnell - Juna Downs Gully - CACO - ITRDB AUSL037 #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite original publication, online resource and date accessed when using these data, # If there is no publication information, please cite investigator, title, online resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/18957 # Description: NOAA Landing Page of study # Online_Resource: https://www1.ncdc.noaa.gov//pub/data/paleo/treering/chronologies/australia/ausl037-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/australia/ausl037.crn # Description: Chronology - Tucson Decadal File # # Archive: Tree Ring # # Dataset_DOI: # # Parameter_Keywords: ring width #------------------- # Contribution_Date # Date: 2015-04-20 #------------------- # File_Last_Modified_Date # Date: 2018-12-14 #------------------- # Title # Study_Name: O'Donnell - Juna Downs Gully - CACO - ITRDB AUSL037 #------------------- # Investigators: O'Donnell , A.J.; Cook, E.R.; Palmer, J.G.; Turney, C.S.M.; Page, G.F.M.; Grierson, P.F. #------------------- # Description_Notes_and_Keywords # Description: Purpose of Collection: # Climatology - precipitation analyses # # Cores are stored at: # Ecosystems Research Group # School of Plant Biology # University of Western Australia # # Notes: # We used a signal free method and age dependent spline to detrend our ring-width data. NOAA Template Chronology file added 2018-12-14. #------------------- # Publication # Authors: Alison J. O'Donnell, Edward R. Cook, Jonathan G. Palmer, Chris S. M. Turney, Gerald F. M. Page, Pauline F. Grierson # Journal_Name: PLoS ONE # Published_Title: Tree Rings Show Recent High Summer-Autumn Precipitation in Northwest Australia Is Unprecedented within the Last Two Centuries # Published_Date_or_Year: 2015 # Volume: # Pages: # Report_Number: # DOI: 10.1371/journal.pone.0128533 # Full_Citation: # Abstract: An understanding of past hydroclimatic variability is critical to resolving the significance of recent recorded trends in Australian precipitation and informing climate models. Our aim was to reconstruct past hydroclimatic variability in semi-arid northwest Australia to provide a longer context within which to examine a recent period of unusually high summer-autumn precipitation. We developed a 210-year ring-width chronology from Callitris columellaris, which was highly correlated with summer-autumn (Dec-May) precipitation (r = 0.81; 1910-2011; p < 0.0001) and autumn (Mar-May) self-calibrating Palmer drought severity index (scPDSI, r = 0.73; 1910-2011; p < 0.0001) across semi-arid northwest Australia. A linear regression model was used to reconstruct precipitation and explained 66% of the variance in observed summer-autumn precipitation. Our reconstruction reveals inter-annual to multi-decadal scale variation in hydroclimate of the region during the last 210 years, typically showing periods of below average precipitation extending from one to three decades and periods of above average precipitation, which were often less than a decade. Our results demonstrate that the last two decades (1995-2012) have been unusually wet (average summer-autumn precipitation of 310 mm) compared to the previous two centuries (average summer-autumn precipitation of 229 mm), coinciding with both an anomalously high frequency and intensity of tropical cyclones in northwest Australia and the dominance of the positive phase of the Southern Annular Mode. #------------------- # Site_Information # Site_Name: Juna Downs Gully # Location: Western Australia # Northernmost_Latitude: -22.8333 # Southernmost_Latitude: -22.8333 # Easternmost_Longitude: 118.6167 # Westernmost_Longitude: 118.6167 # Elevation: 800 #------------------- # Data_Collection # Collection_Name: AUSL037 # Earliest_Year: 1762 # Most_Recent_Year: 2012 # Time_Unit: AD # Notes: #------------------- # Species # Species_Name: Callitris columellaria F. Muell. # Common_Name: cypress pine # Tree_Species_Code: CACO #------------------- # Chronology_Information # Chronology: #--------------------- # Variables # variables format: shortname var components: what,material,error,units,season,archive,detail,method, C or N for Char or Numeric data,additional information ## age_CE age,,,year Common Era,,tree ring,,,N, ## trsgi tree ring standardized growth index,,,,,tree ring,composited,standard,N, ## numsamp number of samples,,,count,,tree ring,,,N, # #-------------------- # Data: # Missing_Values: -999 age_CE trsgi numsamp 1761 672 1 1762 1235 1 1763 391 1 1764 940 1 1765 442 1 1766 999 1 1767 431 1 1768 472 1 1769 555 1 1770 1441 1 1771 1823 1 1772 1511 1 1773 1028 1 1774 1229 1 1775 1059 1 1776 1657 1 1777 1238 1 1778 1438 1 1779 1079 3 1780 1947 3 1781 808 3 1782 1330 3 1783 850 3 1784 577 3 1785 860 3 1786 1296 3 1787 1339 3 1788 1115 3 1789 476 3 1790 758 3 1791 373 3 1792 936 3 1793 1285 3 1794 1225 3 1795 648 3 1796 1336 3 1797 703 3 1798 177 3 1799 539 4 1800 446 4 1801 933 5 1802 481 5 1803 1192 5 1804 88 5 1805 480 5 1806 271 5 1807 658 5 1808 1873 6 1809 2054 6 1810 642 7 1811 642 7 1812 1444 7 1813 1596 7 1814 954 7 1815 1322 7 1816 1544 7 1817 481 8 1818 1312 8 1819 1723 9 1820 396 9 1821 813 9 1822 824 9 1823 835 9 1824 761 9 1825 408 9 1826 1146 9 1827 580 9 1828 414 9 1829 1814 9 1830 639 9 1831 716 9 1832 472 9 1833 1030 9 1834 581 9 1835 810 9 1836 291 9 1837 413 9 1838 1074 9 1839 2188 9 1840 512 9 1841 1460 9 1842 463 9 1843 2179 9 1844 2047 9 1845 1627 9 1846 222 9 1847 309 9 1848 658 9 1849 532 9 1850 1463 9 1851 1875 9 1852 1005 9 1853 1035 9 1854 1826 9 1855 427 9 1856 1230 9 1857 157 9 1858 392 9 1859 942 10 1860 2170 11 1861 454 11 1862 1174 11 1863 282 11 1864 1772 11 1865 1025 12 1866 1067 12 1867 1157 12 1868 458 12 1869 782 12 1870 734 13 1871 3969 13 1872 2408 13 1873 955 13 1874 1825 14 1875 398 13 1876 1038 13 1877 987 13 1878 934 15 1879 1164 15 1880 848 14 1881 1534 14 1882 714 14 1883 400 14 1884 1241 14 1885 400 14 1886 1015 14 1887 521 15 1888 774 15 1889 651 18 1890 1202 20 1891 1559 21 1892 698 21 1893 971 21 1894 582 21 1895 1594 21 1896 1774 22 1897 1678 23 1898 1212 23 1899 1451 23 1900 264 22 1901 888 22 1902 123 22 1903 1339 22 1904 2198 24 1905 216 24 1906 1612 24 1907 229 27 1908 764 28 1909 1672 28 1910 0 28 1911 535 29 1912 325 29 1913 572 29 1914 1551 30 1915 799 30 1916 2616 30 1917 419 30 1918 370 30 1919 378 31 1920 342 31 1921 701 31 1922 817 31 1923 232 31 1924 1596 32 1925 283 33 1926 381 34 1927 338 34 1928 558 34 1929 432 34 1930 2871 34 1931 483 35 1932 1012 35 1933 2369 35 1934 220 37 1935 699 37 1936 1296 37 1937 1026 38 1938 803 38 1939 600 38 1940 120 38 1941 3298 38 1942 1257 37 1943 103 37 1944 1390 37 1945 1654 37 1946 549 37 1947 1764 37 1948 348 37 1949 433 37 1950 4 35 1951 483 35 1952 448 35 1953 713 35 1954 1473 35 1955 98 35 1956 76 35 1957 373 35 1958 130 35 1959 1288 35 1960 1800 35 1961 840 35 1962 567 35 1963 424 35 1964 405 35 1965 999 35 1966 214 35 1967 694 35 1968 284 35 1969 726 35 1970 1616 35 1971 77 35 1972 2240 35 1973 534 35 1974 273 35 1975 2060 35 1976 323 35 1977 547 35 1978 355 35 1979 2147 35 1980 500 35 1981 1612 35 1982 159 35 1983 2069 35 1984 898 34 1985 313 34 1986 435 34 1987 512 34 1988 401 34 1989 197 34 1990 404 34 1991 1407 34 1992 585 34 1993 749 34 1994 3029 34 1995 283 34 1996 3033 34 1997 1110 34 1998 2824 34 1999 3902 34 2000 571 33 2001 566 33 2002 1340 32 2003 1940 28 2004 343 28 2005 3054 28 2006 1033 24 2007 680 24 2008 1309 24 2009 122 23 2010 1484 23 2011 2357 22