# europe_spai044 - Hecho Puerto de Acher - 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_spai044 - Hecho Puerto de Acher - 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: Hecho Puerto de Acher # Location: # Country: Spain # Northernmost_Latitude: 42.8 # Southernmost_Latitude: 42.8 # Easternmost_Longitude: -0.7 # Westernmost_Longitude: -0.7 # Elevation: 1625 m #-------------------- # Data_Collection # Collection_Name: europe_spai044B # Earliest_Year: 1736 # Most_Recent_Year: 1985 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"temperature"}{"T1":"5.50158790664"}{"T2":"18.23100398"}{"M1":"0.0218666193599"}{"M2":"0.345770930298"} #-------------------- # Species # Species_Name: pine # Species_Code: PISP #-------------------- # 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 1736 1.14 1737 1.129 1738 1.068 1739 0.988 1740 0.686 1741 0.529 1742 0.855 1743 0.867 1744 0.581 1745 0.841 1746 0.75 1747 1.166 1748 0.844 1749 0.822 1750 1.026 1751 0.759 1752 0.992 1753 1.018 1754 1.128 1755 1.061 1756 0.991 1757 1.061 1758 1.087 1759 1.111 1760 0.796 1761 1.064 1762 1.125 1763 0.913 1764 1.06 1765 0.86 1766 0.681 1767 0.669 1768 0.741 1769 0.981 1770 0.894 1771 0.719 1772 0.763 1773 1.056 1774 0.958 1775 0.761 1776 0.614 1777 0.82 1778 0.725 1779 0.745 1780 0.859 1781 1.03 1782 0.701 1783 0.953 1784 1.114 1785 0.901 1786 1.034 1787 0.822 1788 1.202 1789 1.0 1790 0.958 1791 0.899 1792 0.781 1793 0.887 1794 1.197 1795 1.128 1796 1.225 1797 0.905 1798 1.223 1799 0.86 1800 1.258 1801 1.21 1802 1.071 1803 0.595 1804 0.637 1805 0.921 1806 1.078 1807 1.284 1808 0.679 1809 0.873 1810 1.05 1811 0.977 1812 0.944 1813 0.961 1814 1.092 1815 0.941 1816 0.643 1817 0.714 1818 0.889 1819 1.052 1820 0.923 1821 0.944 1822 0.87 1823 0.976 1824 1.061 1825 1.41 1826 1.107 1827 1.13 1828 1.124 1829 0.977 1830 1.192 1831 1.2 1832 0.872 1833 1.022 1834 1.593 1835 1.044 1836 0.849 1837 1.119 1838 1.137 1839 1.107 1840 1.0 1841 1.18 1842 1.231 1843 1.122 1844 0.843 1845 0.8 1846 1.215 1847 0.793 1848 0.918 1849 0.721 1850 0.774 1851 0.725 1852 0.998 1853 0.899 1854 0.981 1855 0.733 1856 0.865 1857 0.861 1858 0.744 1859 0.98 1860 0.942 1861 1.098 1862 0.943 1863 1.011 1864 1.271 1865 1.122 1866 0.959 1867 1.325 1868 0.845 1869 0.805 1870 0.908 1871 0.888 1872 1.092 1873 1.049 1874 1.088 1875 1.192 1876 0.916 1877 0.929 1878 1.318 1879 0.712 1880 0.791 1881 0.952 1882 1.081 1883 0.966 1884 0.922 1885 1.019 1886 1.05 1887 1.024 1888 0.924 1889 1.08 1890 0.813 1891 0.968 1892 1.023 1893 1.236 1894 0.994 1895 1.009 1896 0.765 1897 0.828 1898 0.938 1899 1.003 1900 0.917 1901 1.251 1902 1.297 1903 1.27 1904 1.425 1905 1.351 1906 0.952 1907 1.015 1908 1.014 1909 1.045 1910 1.075 1911 1.431 1912 0.89 1913 0.898 1914 1.107 1915 1.18 1916 1.067 1917 1.176 1918 1.014 1919 0.817 1920 0.993 1921 0.849 1922 0.558 1923 1.033 1924 1.139 1925 1.089 1926 1.075 1927 1.015 1928 0.837 1929 1.058 1930 1.01 1931 0.944 1932 1.03 1933 1.113 1934 0.797 1935 0.743 1936 1.083 1937 0.961 1938 0.863 1939 0.851 1940 0.948 1941 0.751 1942 0.618 1943 0.971 1944 0.923 1945 0.65 1946 0.87 1947 0.798 1948 1.036 1949 0.724 1950 0.516 1951 0.887 1952 1.4 1953 1.144 1954 0.92 1955 1.17 1956 1.233 1957 0.973 1958 1.273 1959 1.222 1960 0.976 1961 0.985 1962 0.667 1963 0.61 1964 1.131 1965 0.768 1966 0.895 1967 0.687 1968 0.994 1969 1.033 1970 1.32 1971 1.172 1972 0.897 1973 1.278 1974 1.071 1975 0.791 1976 1.092 1977 0.954 1978 1.115 1979 0.749 1980 0.846 1981 1.162 1982 1.037 1983 0.945 1984 0.719 1985 0.912