# europe_spai048 - Urbion Duruelo - 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_spai048 - Urbion Duruelo - 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: Urbion Duruelo # Location: # Country: Spain # Northernmost_Latitude: 42.02 # Southernmost_Latitude: 42.02 # Easternmost_Longitude: -2.9 # Westernmost_Longitude: -2.9 # Elevation: 1840 m #-------------------- # Data_Collection # Collection_Name: europe_spai048B # Earliest_Year: 1770 # Most_Recent_Year: 1983 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"temperature"}{"T1":"6.14263011545"}{"T2":"18.6855998937"}{"M1":"0.022629233214"}{"M2":"0.25570555211"} #-------------------- # Species # Species_Name: Scots pine # Species_Code: PISY #-------------------- # 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 1770 1.228 1771 0.947 1772 0.853 1773 0.938 1774 0.976 1775 0.915 1776 1.244 1777 1.35 1778 1.319 1779 1.156 1780 1.29 1781 1.395 1782 1.033 1783 1.118 1784 1.204 1785 1.238 1786 1.163 1787 1.21 1788 1.265 1789 1.179 1790 0.997 1791 1.103 1792 1.115 1793 1.086 1794 1.143 1795 1.189 1796 0.993 1797 0.949 1798 1.251 1799 1.172 1800 0.778 1801 0.774 1802 0.703 1803 0.475 1804 0.399 1805 0.555 1806 0.263 1807 0.86 1808 0.908 1809 0.733 1810 0.989 1811 1.066 1812 1.006 1813 0.873 1814 1.11 1815 1.182 1816 1.064 1817 1.045 1818 1.082 1819 1.11 1820 0.99 1821 0.905 1822 1.001 1823 1.211 1824 0.765 1825 1.051 1826 0.919 1827 1.002 1828 0.996 1829 1.042 1830 1.121 1831 0.889 1832 0.784 1833 0.98 1834 1.34 1835 1.05 1836 0.947 1837 1.447 1838 1.3 1839 0.917 1840 0.807 1841 0.933 1842 0.906 1843 0.843 1844 0.912 1845 0.929 1846 0.991 1847 1.024 1848 0.992 1849 1.035 1850 1.071 1851 1.101 1852 0.916 1853 0.965 1854 1.206 1855 0.913 1856 0.871 1857 0.89 1858 0.826 1859 0.909 1860 0.874 1861 1.056 1862 0.934 1863 1.095 1864 1.515 1865 1.16 1866 0.883 1867 0.997 1868 0.957 1869 1.115 1870 1.046 1871 1.363 1872 1.031 1873 0.989 1874 1.046 1875 1.196 1876 1.109 1877 1.156 1878 1.119 1879 0.8 1880 1.035 1881 0.918 1882 0.879 1883 0.88 1884 1.078 1885 1.18 1886 1.057 1887 1.138 1888 1.204 1889 1.137 1890 1.02 1891 1.055 1892 1.062 1893 1.392 1894 1.032 1895 1.063 1896 0.772 1897 0.969 1898 0.871 1899 0.904 1900 0.809 1901 0.897 1902 0.971 1903 0.986 1904 1.165 1905 1.071 1906 0.961 1907 0.918 1908 0.678 1909 0.708 1910 0.796 1911 1.105 1912 0.868 1913 0.993 1914 1.211 1915 1.068 1916 1.036 1917 1.051 1918 1.043 1919 1.098 1920 1.149 1921 1.027 1922 0.681 1923 1.183 1924 1.025 1925 0.939 1926 0.814 1927 0.915 1928 0.879 1929 1.012 1930 1.059 1931 0.955 1932 0.906 1933 1.231 1934 0.832 1935 0.797 1936 0.904 1937 0.781 1938 0.833 1939 0.865 1940 1.101 1941 0.804 1942 0.772 1943 0.857 1944 1.144 1945 1.065 1946 0.68 1947 1.005 1948 1.203 1949 0.816 1950 0.856 1951 0.814 1952 0.024 1953 0.735 1954 0.902 1955 1.091 1956 1.056 1957 0.985 1958 1.298 1959 1.201 1960 0.974 1961 1.072 1962 0.719 1963 0.722 1964 1.025 1965 0.991 1966 0.909 1967 0.852 1968 0.925 1969 1.009 1970 1.366 1971 1.408 1972 1.209 1973 1.55 1974 1.05 1975 0.994 1976 1.168 1977 1.095 1978 0.993 1979 0.896 1980 1.02 1981 1.002 1982 0.926 1983 1.078