# europe_aust007 - Stubaital Milderaun Alm - 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_aust007 - Stubaital Milderaun Alm - 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: Stubaital Milderaun Alm # Location: # Country: Austria # Northernmost_Latitude: 47.13 # Southernmost_Latitude: 47.13 # Easternmost_Longitude: 11.28 # Westernmost_Longitude: 11.28 # Elevation: 1850 m #-------------------- # Data_Collection # Collection_Name: europe_aust007B # Earliest_Year: 1800 # Most_Recent_Year: 1975 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"temperature"}{"T1":"4.87482733125"}{"T2":"17.1718139153"}{"M1":"0.0224360068199"}{"M2":"0.391996621457"} #-------------------- # 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 1800 1.092 1801 1.145 1802 1.124 1803 1.187 1804 1.076 1805 1.022 1806 0.998 1807 1.271 1808 1.089 1809 1.098 1810 1.057 1811 1.047 1812 0.953 1813 0.794 1814 0.827 1815 0.735 1816 0.751 1817 0.917 1818 0.876 1819 0.86 1820 0.877 1821 0.66 1822 0.879 1823 1.025 1824 1.096 1825 1.068 1826 1.104 1827 1.118 1828 1.228 1829 1.138 1830 0.999 1831 0.913 1832 0.922 1833 1.076 1834 1.307 1835 1.208 1836 0.973 1837 0.808 1838 0.675 1839 1.098 1840 0.922 1841 1.036 1842 1.338 1843 0.887 1844 1.111 1845 1.09 1846 1.525 1847 1.258 1848 1.121 1849 1.065 1850 0.926 1851 0.857 1852 1.035 1853 1.043 1854 0.905 1855 1.14 1856 1.054 1857 1.016 1858 0.876 1859 0.895 1860 0.73 1861 0.935 1862 0.774 1863 1.081 1864 0.808 1865 0.887 1866 1.037 1867 1.217 1868 1.079 1869 0.936 1870 1.04 1871 0.923 1872 0.725 1873 1.013 1874 1.103 1875 1.097 1876 0.964 1877 0.975 1878 0.902 1879 0.846 1880 1.112 1881 1.461 1882 1.2 1883 1.182 1884 1.182 1885 1.296 1886 1.092 1887 1.156 1888 0.907 1889 1.188 1890 0.774 1891 0.845 1892 0.961 1893 1.006 1894 1.124 1895 1.139 1896 1.056 1897 1.172 1898 0.874 1899 0.954 1900 1.046 1901 1.09 1902 0.984 1903 0.85 1904 1.112 1905 0.929 1906 0.738 1907 0.688 1908 1.019 1909 0.663 1910 0.841 1911 0.942 1912 0.755 1913 0.658 1914 0.882 1915 0.993 1916 0.871 1917 1.261 1918 0.807 1919 1.173 1920 1.136 1921 1.593 1922 1.284 1923 1.182 1924 1.107 1925 0.964 1926 0.714 1927 1.101 1928 1.101 1929 0.951 1930 0.944 1931 1.056 1932 0.961 1933 0.65 1934 0.665 1935 0.836 1936 0.82 1937 1.019 1938 0.888 1939 0.876 1940 0.812 1941 1.02 1942 0.966 1943 0.913 1944 1.0 1945 1.044 1946 0.977 1947 1.094 1948 0.645 1949 0.89 1950 0.979 1951 0.911 1952 1.019 1953 0.889 1954 0.658 1955 0.974 1956 0.903 1957 1.01 1958 1.154 1959 1.112 1960 1.051 1961 1.03 1962 1.005 1963 0.982 1964 0.911 1965 0.706 1966 0.961 1967 1.041 1968 0.979 1969 1.03 1970 0.937 1971 0.872 1972 1.022 1973 1.287 1974 0.962 1975 1.087