# europe_gree012 - Zagradeniye Forest - 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: europe_gree012 - Zagradeniye Forest - 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: Zagradeniye Forest # Location: # Country: Greece # Northernmost_Latitude: 41.67 # Southernmost_Latitude: 41.67 # Easternmost_Longitude: 24.88 # Westernmost_Longitude: 24.88 # Elevation: 1320 m #-------------------- # Data_Collection # Collection_Name: europe_gree012B # Earliest_Year: 1717 # Most_Recent_Year: 1976 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"temperature"}{"T1":"4.55728267166"}{"T2":"17.4188338474"}{"M1":"0.0224082134411"}{"M2":"0.364020652962"} #-------------------- # Species # Species_Name: Norway spruce # Species_Code: PCAB #-------------------- # 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 1717 0.89 1718 0.908 1719 0.939 1720 1.189 1721 1.174 1722 1.152 1723 1.011 1724 1.089 1725 0.874 1726 0.879 1727 1.061 1728 1.272 1729 1.146 1730 1.207 1731 1.136 1732 1.081 1733 1.152 1734 0.968 1735 1.055 1736 1.083 1737 1.063 1738 1.096 1739 1.14 1740 0.857 1741 0.92 1742 1.021 1743 0.991 1744 1.06 1745 1.09 1746 1.139 1747 1.233 1748 1.067 1749 1.093 1750 1.026 1751 0.909 1752 0.948 1753 0.929 1754 1.137 1755 1.103 1756 1.091 1757 1.117 1758 1.178 1759 1.113 1760 1.107 1761 1.119 1762 1.131 1763 0.967 1764 0.864 1765 0.969 1766 0.946 1767 1.037 1768 0.874 1769 0.885 1770 0.929 1771 0.978 1772 1.018 1773 0.89 1774 1.062 1775 1.176 1776 1.095 1777 0.98 1778 1.034 1779 1.015 1780 1.146 1781 1.038 1782 0.925 1783 0.775 1784 0.987 1785 1.086 1786 1.111 1787 1.07 1788 0.899 1789 0.874 1790 0.913 1791 0.946 1792 1.056 1793 1.001 1794 1.102 1795 1.039 1796 0.926 1797 0.922 1798 0.896 1799 1.007 1800 0.997 1801 1.071 1802 1.114 1803 1.043 1804 1.002 1805 0.86 1806 0.926 1807 0.996 1808 0.83 1809 0.871 1810 1.03 1811 1.004 1812 0.867 1813 0.793 1814 1.135 1815 1.032 1816 1.004 1817 1.024 1818 1.047 1819 1.166 1820 1.245 1821 1.145 1822 1.378 1823 1.284 1824 1.386 1825 1.024 1826 1.215 1827 1.083 1828 1.151 1829 0.883 1830 1.007 1831 0.944 1832 0.868 1833 0.834 1834 0.737 1835 0.707 1836 0.749 1837 0.704 1838 0.774 1839 0.837 1840 0.897 1841 0.947 1842 0.968 1843 0.967 1844 0.981 1845 0.856 1846 0.91 1847 0.939 1848 0.988 1849 0.875 1850 1.065 1851 1.031 1852 1.091 1853 1.069 1854 1.036 1855 1.139 1856 1.2 1857 0.896 1858 0.893 1859 0.844 1860 1.141 1861 1.019 1862 1.279 1863 1.137 1864 1.049 1865 1.025 1866 1.135 1867 0.99 1868 0.844 1869 1.078 1870 0.961 1871 1.106 1872 1.078 1873 1.235 1874 1.128 1875 1.059 1876 1.222 1877 1.439 1878 1.275 1879 1.267 1880 1.07 1881 1.263 1882 1.107 1883 1.107 1884 0.988 1885 1.265 1886 1.15 1887 1.051 1888 0.947 1889 0.87 1890 0.835 1891 0.875 1892 0.964 1893 0.882 1894 0.869 1895 0.948 1896 0.92 1897 0.861 1898 0.891 1899 1.097 1900 1.138 1901 1.239 1902 1.409 1903 1.235 1904 1.42 1905 1.149 1906 1.157 1907 1.176 1908 1.131 1909 1.09 1910 1.102 1911 0.923 1912 0.997 1913 1.036 1914 1.16 1915 1.112 1916 1.002 1917 0.924 1918 0.821 1919 0.866 1920 0.959 1921 0.831 1922 0.996 1923 0.898 1924 1.029 1925 1.071 1926 1.11 1927 1.269 1928 0.879 1929 0.64 1930 0.819 1931 0.882 1932 0.685 1933 0.646 1934 0.751 1935 0.88 1936 0.783 1937 0.909 1938 0.889 1939 0.953 1940 0.689 1941 1.082 1942 1.022 1943 0.685 1944 0.915 1945 1.044 1946 0.989 1947 0.726 1948 0.95 1949 0.73 1950 1.023 1951 0.724 1952 0.898 1953 0.849 1954 0.942 1955 0.785 1956 0.959 1957 0.781 1958 0.847 1959 0.75 1960 0.902 1961 0.869 1962 1.082 1963 0.897 1964 0.859 1965 0.915 1966 0.683 1967 0.719 1968 0.819 1969 0.927 1970 0.934 1971 0.763 1972 0.803 1973 0.809 1974 0.934 1975 0.859 1976 0.764