# northamerica_usa_wa101 - Mount Rainier Low - 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_wa101 - Mount Rainier Low - 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: Mount Rainier Low # Location: # Country: United States # Northernmost_Latitude: 46.83 # Southernmost_Latitude: 46.83 # Easternmost_Longitude: -121.75 # Westernmost_Longitude: -121.75 # Elevation: 1425 m #-------------------- # Data_Collection # Collection_Name: northamerica_usa_wa101B # Earliest_Year: 1715 # Most_Recent_Year: 1992 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"temperature"}{"T1":"4.6940920158"}{"T2":"18.9513633035"}{"M1":"0.0219031035831"}{"M2":"0.361723492555"} #-------------------- # Species # Species_Name: mountain hemlock # Species_Code: TSME #-------------------- # 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 1715 0.635 1716 1.2 1717 1.309 1718 1.064 1719 1.134 1720 1.02 1721 1.275 1722 1.17 1723 1.264 1724 1.032 1725 1.186 1726 1.505 1727 1.521 1728 1.622 1729 1.697 1730 1.117 1731 1.401 1732 1.521 1733 1.526 1734 1.244 1735 1.319 1736 1.507 1737 1.239 1738 1.107 1739 1.305 1740 1.6 1741 1.859 1742 1.01 1743 1.782 1744 1.231 1745 1.212 1746 1.572 1747 1.581 1748 1.023 1749 0.675 1750 0.644 1751 0.759 1752 0.487 1753 0.526 1754 0.535 1755 0.61 1756 1.139 1757 0.708 1758 0.508 1759 0.483 1760 0.407 1761 0.347 1762 0.485 1763 0.488 1764 0.488 1765 0.586 1766 0.525 1767 0.559 1768 0.574 1769 0.587 1770 0.733 1771 0.65 1772 0.704 1773 0.778 1774 0.907 1775 0.64 1776 0.851 1777 0.998 1778 1.032 1779 0.988 1780 1.13 1781 0.8 1782 1.163 1783 1.061 1784 1.036 1785 0.951 1786 1.01 1787 0.867 1788 1.056 1789 0.959 1790 1.037 1791 1.202 1792 1.333 1793 1.128 1794 1.416 1795 1.225 1796 1.162 1797 0.907 1798 1.411 1799 1.305 1800 1.194 1801 0.835 1802 1.154 1803 1.13 1804 1.162 1805 1.263 1806 0.87 1807 1.041 1808 0.754 1809 1.065 1810 0.309 1811 0.911 1812 0.855 1813 0.803 1814 0.897 1815 0.705 1816 0.97 1817 1.034 1818 0.884 1819 0.674 1820 0.511 1821 0.8 1822 1.112 1823 0.747 1824 0.641 1825 0.615 1826 0.65 1827 0.724 1828 0.788 1829 0.864 1830 0.8 1831 0.735 1832 0.857 1833 0.952 1834 0.976 1835 0.798 1836 0.902 1837 0.974 1838 0.869 1839 1.087 1840 0.736 1841 0.876 1842 0.971 1843 1.125 1844 1.08 1845 0.973 1846 1.067 1847 0.983 1848 1.229 1849 0.8 1850 0.958 1851 1.149 1852 0.854 1853 0.884 1854 1.023 1855 1.037 1856 0.845 1857 0.957 1858 1.028 1859 0.887 1860 1.065 1861 0.913 1862 0.909 1863 1.09 1864 0.927 1865 0.852 1866 0.619 1867 0.665 1868 0.849 1869 0.661 1870 0.575 1871 0.587 1872 0.699 1873 0.608 1874 0.805 1875 0.815 1876 0.71 1877 0.793 1878 0.868 1879 0.828 1880 0.535 1881 0.702 1882 0.825 1883 1.004 1884 0.939 1885 0.916 1886 0.945 1887 0.958 1888 1.201 1889 1.101 1890 0.925 1891 1.111 1892 1.326 1893 1.279 1894 1.306 1895 1.587 1896 1.087 1897 1.349 1898 1.312 1899 0.902 1900 1.158 1901 1.221 1902 1.124 1903 1.193 1904 1.504 1905 1.487 1906 1.027 1907 0.934 1908 0.946 1909 0.954 1910 1.257 1911 1.044 1912 1.061 1913 1.128 1914 1.287 1915 1.048 1916 0.771 1917 1.23 1918 1.259 1919 1.282 1920 1.2 1921 1.059 1922 1.138 1923 1.021 1924 1.111 1925 1.013 1926 0.935 1927 0.812 1928 1.059 1929 1.057 1930 1.148 1931 1.185 1932 1.129 1933 1.285 1934 1.542 1935 1.236 1936 1.079 1937 0.983 1938 1.089 1939 1.113 1940 1.063 1941 1.128 1942 0.87 1943 0.961 1944 1.042 1945 0.923 1946 0.895 1947 1.08 1948 1.122 1949 1.165 1950 1.421 1951 1.588 1952 1.215 1953 0.831 1954 0.772 1955 0.868 1956 0.785 1957 1.111 1958 1.112 1959 1.136 1960 1.262 1961 1.083 1962 0.991 1963 1.018 1964 0.784 1965 1.027 1966 1.184 1967 0.99 1968 1.039 1969 0.923 1970 0.827 1971 0.631 1972 0.852 1973 1.07 1974 0.461 1975 0.785 1976 0.63 1977 0.743 1978 0.749 1979 0.773 1980 0.955 1981 0.825 1982 0.651 1983 0.832 1984 0.833 1985 0.868 1986 0.775 1987 0.94 1988 0.906 1989 0.734 1990 0.919 1991 0.562 1992 0.533