# northamerica_usa_co533 - Eldorado Canyon - Breitenmoser Tree Ring Chronology Data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # # Online_Resource: # # Original_Source_URL: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Tree Rings #-------------------- # Contribution_Date # Date: 2016-01-07 #-------------------- # Title # Study_Name: northamerica_usa_co533 - Eldorado Canyon - Breitenmoser Tree Ring Chronology Data #-------------------- # Investigators # Investigators: Breitenmoser, P.; Bronnimann, S.; Frank, D. #-------------------- # Description_and_Notes # Description: Data from Breitenmoser 2014 Journal of past Climate supplementary, see publication for ARSTAN standardization details #-------------------- # Publication # Authors: Breitenmoser, P.; Bronnimann, S.; Frank, D. # Published_Date_or_Year: 2014-03-11 # Published_Title: Forward modelling of tree-ring width and comparison with a global network of tree-ring chronologies # Journal_Name: Climate of the Past # Volume: 10 # Edition: # Issue: # Pages: 437-449 # DOI: 10.5194/cp-10-437-2014 # Online_Resource: www.clim-past.net/10/437/2014/ # Full_Citation: # Abstract: We investigate relationships between climate and tree-ring data on a global scale using the process-based Vaganov–Shashkin Lite (VSL) forward model of tree-ring width formation. The VSL model requires as inputs only latitude, monthly mean temperature, and monthly accumulated precipitation. Hence, this simple, process-based model enables ring-width simulation at any location where monthly climate records exist. In this study, we analyse the growth response of simulated tree rings to monthly climate conditions obtained from the CRU TS3.1 data set back to 1901. Our key aims are (a) to assess the VSL model performance by examining the relations between simulated and observed growth at 2287 globally distributed sites, (b) indentify optimal growth parameters found during the model calibration, and (c) to evaluate the potential of the VSL model as an observation operator for data-assimilation-based reconstructions of climate from tree-ring width. The assessment of the growth-onset threshold temperature of approximately 4–6 C for most sites and species using a Bayesian estimation approach complements other studies on the lower temperature limits where plant growth may be sustained. Our results suggest that the VSL model skilfully simulates site level treering series in response to climate forcing for a wide range of environmental conditions and species. Spatial aggregation of the tree-ring chronologies to reduce non-climatic noise at the site level yielded notable improvements in the coherence between modelled and actual growth. The resulting distinct and coherent patterns of significant relationships between the aggregated and simulated series further demonstrate the VSL model’s ability to skilfully capture the climatic signal contained in tree-ring series. Finally, we propose that the VSL model can be used as an observation operator in data assimilation approaches to reconstruct past climate. #-------------------- # Funding_Agency # Funding_Agency_Name: Swiss National Science Foundation # Grant: #-------------------- # Site_Information # Site_Name: Eldorado Canyon # Location: # Country: United States # Northernmost_Latitude: 39.93 # Southernmost_Latitude: 39.93 # Easternmost_Longitude: -105.27 # Westernmost_Longitude: -105.27 # Elevation: 1889 m #-------------------- # Data_Collection # Collection_Name: northamerica_usa_co533B # Earliest_Year: 1675 # Most_Recent_Year: 1987 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"moisture"}{"T1":"2.36346976507"}{"T2":"14.5599917145"}{"M1":"0.0234588560572"}{"M2":"0.530655443622"} #-------------------- # Species # Species_Name: Douglas fir # Species_Code: PSME #-------------------- # Chronology: # # # #-------------------- # Variables # # Data variables follow that are preceded by ## in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ##age age, , ,years AD, , , , ,N ##trsgi tree ring standardized growth index, tree ring, ,percent relative to mean growth, , Tree Rings, , ,N # #-------------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: nan # age trsgi 1675 0.805 1676 1.261 1677 1.328 1678 1.558 1679 0.162 1680 0.853 1681 0.425 1682 0.602 1683 1.139 1684 1.018 1685 0.202 1686 0.69 1687 0.608 1688 0.839 1689 0.937 1690 1.021 1691 1.053 1692 1.15 1693 1.102 1694 1.191 1695 1.42 1696 1.397 1697 1.051 1698 2.069 1699 0.942 1700 1.094 1701 0.817 1702 1.152 1703 1.036 1704 0.961 1705 1.183 1706 1.512 1707 1.372 1708 1.424 1709 0.373 1710 1.261 1711 0.436 1712 1.051 1713 1.172 1714 1.128 1715 0.918 1716 0.757 1717 0.88 1718 0.79 1719 1.343 1720 1.155 1721 1.479 1722 1.126 1723 0.857 1724 0.829 1725 0.749 1726 1.127 1727 1.02 1728 0.989 1729 0.423 1730 0.57 1731 1.089 1732 0.806 1733 0.991 1734 0.911 1735 0.88 1736 0.91 1737 0.602 1738 0.964 1739 0.374 1740 0.431 1741 0.361 1742 0.219 1743 0.455 1744 0.346 1745 0.324 1746 0.55 1747 0.594 1748 0.593 1749 0.65 1750 0.701 1751 1.209 1752 1.061 1753 1.396 1754 0.954 1755 1.4 1756 1.158 1757 0.935 1758 0.49 1759 0.984 1760 0.61 1761 1.153 1762 1.115 1763 0.858 1764 0.973 1765 0.791 1766 1.011 1767 0.88 1768 1.391 1769 1.011 1770 0.609 1771 1.082 1772 0.631 1773 0.649 1774 0.751 1775 0.775 1776 0.816 1777 0.75 1778 0.928 1779 1.1 1780 0.755 1781 1.055 1782 0.947 1783 1.143 1784 1.022 1785 1.005 1786 0.849 1787 0.936 1788 0.811 1789 0.371 1790 0.709 1791 0.751 1792 1.182 1793 1.095 1794 1.181 1795 1.015 1796 0.817 1797 0.481 1798 0.337 1799 0.364 1800 0.551 1801 0.543 1802 0.621 1803 0.836 1804 0.891 1805 0.71 1806 1.066 1807 1.104 1808 1.173 1809 1.21 1810 1.132 1811 1.152 1812 0.963 1813 1.265 1814 1.258 1815 1.134 1816 1.129 1817 1.135 1818 1.138 1819 0.826 1820 0.878 1821 0.814 1822 0.954 1823 0.815 1824 0.665 1825 0.956 1826 0.984 1827 1.137 1828 1.343 1829 1.288 1830 0.891 1831 0.972 1832 1.038 1833 0.95 1834 1.112 1835 1.004 1836 1.081 1837 0.961 1838 1.23 1839 1.337 1840 1.154 1841 1.002 1842 0.322 1843 0.972 1844 1.216 1845 0.531 1846 0.814 1847 0.668 1848 0.759 1849 0.637 1850 0.877 1851 0.471 1852 0.311 1853 0.73 1854 0.698 1855 0.598 1856 0.481 1857 0.595 1858 0.838 1859 0.793 1860 1.21 1861 0.819 1862 0.844 1863 0.544 1864 0.824 1865 0.779 1866 1.278 1867 1.156 1868 0.83 1869 1.281 1870 1.09 1871 0.827 1872 0.762 1873 1.168 1874 0.622 1875 0.295 1876 0.664 1877 0.632 1878 1.134 1879 1.12 1880 0.448 1881 0.827 1882 1.212 1883 1.253 1884 0.708 1885 0.503 1886 0.376 1887 0.312 1888 0.607 1889 1.042 1890 1.159 1891 1.036 1892 1.24 1893 0.928 1894 1.803 1895 1.583 1896 1.236 1897 1.479 1898 1.846 1899 1.241 1900 1.252 1901 1.122 1902 1.202 1903 1.439 1904 1.479 1905 1.593 1906 0.902 1907 1.54 1908 1.552 1909 1.298 1910 1.159 1911 1.172 1912 1.557 1913 1.242 1914 1.362 1915 1.372 1916 1.732 1917 1.309 1918 1.463 1919 1.502 1920 1.44 1921 1.477 1922 0.911 1923 1.323 1924 1.363 1925 0.362 1926 1.251 1927 1.27 1928 1.396 1929 1.237 1930 1.168 1931 1.393 1932 0.735 1933 1.448 1934 1.251 1935 1.257 1936 1.3 1937 0.986 1938 1.196 1939 1.092 1940 0.567 1941 0.932 1942 1.258 1943 1.361 1944 0.827 1945 0.904 1946 0.943 1947 1.28 1948 1.224 1949 1.164 1950 1.101 1951 1.21 1952 0.695 1953 0.772 1954 0.379 1955 0.388 1956 0.504 1957 0.63 1958 0.897 1959 1.002 1960 0.972 1961 0.905 1962 0.981 1963 0.736 1964 0.522 1965 0.736 1966 0.749 1967 1.042 1968 1.279 1969 1.189 1970 1.315 1971 0.784 1972 0.623 1973 0.834 1974 0.597 1975 0.807 1976 0.733 1977 0.881 1978 0.949 1979 0.921 1980 0.818 1981 0.701 1982 0.667 1983 1.03 1984 0.963 1985 0.95 1986 0.921 1987 1.016