# asia_russ159w - Under Vangapur River B - 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: asia_russ159w - Under Vangapur River B - 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: Under Vangapur River B # Location: # Country: Russia # Northernmost_Latitude: 63.07 # Southernmost_Latitude: 63.07 # Easternmost_Longitude: 76.32 # Westernmost_Longitude: 76.32 # Elevation: 170 m #-------------------- # Data_Collection # Collection_Name: asia_russ159wB # Earliest_Year: 1822 # Most_Recent_Year: 1994 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"temperature"}{"T1":"7.0428628352"}{"T2":"20.5101328667"}{"M1":"0.0224176059152"}{"M2":"0.26451154342"} #-------------------- # Species # Species_Name: Siberian larch # Species_Code: LASI #-------------------- # 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 1822 1.013 1823 1.183 1824 1.156 1825 1.013 1826 0.975 1827 0.926 1828 0.367 1829 0.369 1830 0.513 1831 0.918 1832 0.978 1833 0.953 1834 0.9 1835 1.044 1836 1.03 1837 1.12 1838 1.345 1839 1.164 1840 1.311 1841 1.05 1842 1.266 1843 1.158 1844 1.473 1845 1.418 1846 1.395 1847 1.184 1848 1.151 1849 1.35 1850 1.334 1851 1.224 1852 1.2 1853 1.059 1854 0.944 1855 0.772 1856 0.883 1857 0.895 1858 0.789 1859 0.688 1860 1.02 1861 0.969 1862 0.81 1863 0.931 1864 0.922 1865 1.119 1866 1.094 1867 0.781 1868 1.227 1869 0.845 1870 1.108 1871 0.915 1872 1.141 1873 1.014 1874 1.097 1875 1.422 1876 1.172 1877 1.236 1878 1.29 1879 1.294 1880 1.103 1881 0.559 1882 0.434 1883 0.53 1884 0.397 1885 0.415 1886 0.517 1887 0.576 1888 0.634 1889 0.672 1890 0.917 1891 0.769 1892 1.1 1893 0.667 1894 1.077 1895 0.81 1896 0.828 1897 0.953 1898 1.147 1899 1.077 1900 1.284 1901 1.179 1902 1.256 1903 0.964 1904 1.212 1905 0.726 1906 0.974 1907 0.382 1908 0.804 1909 1.23 1910 0.958 1911 1.086 1912 0.828 1913 1.103 1914 0.986 1915 1.481 1916 1.337 1917 1.415 1918 1.458 1919 1.229 1920 1.568 1921 1.511 1922 1.818 1923 1.799 1924 0.801 1925 1.421 1926 1.39 1927 0.935 1928 0.859 1929 0.779 1930 0.885 1931 0.864 1932 0.978 1933 0.899 1934 0.816 1935 0.743 1936 0.77 1937 0.878 1938 0.484 1939 1.001 1940 0.989 1941 1.252 1942 1.283 1943 0.425 1944 0.963 1945 1.127 1946 0.833 1947 0.605 1948 0.632 1949 0.316 1950 0.696 1951 0.293 1952 0.72 1953 0.532 1954 0.778 1955 0.937 1956 0.938 1957 0.969 1958 1.008 1959 1.025 1960 0.931 1961 0.679 1962 0.9 1963 1.154 1964 1.175 1965 1.072 1966 1.076 1967 1.417 1968 1.316 1969 1.223 1970 0.861 1971 1.008 1972 0.887 1973 0.858 1974 0.757 1975 0.824 1976 0.805 1977 1.004 1978 1.222 1979 1.449 1980 1.261 1981 1.108 1982 1.059 1983 1.225 1984 1.408 1985 1.2 1986 1.247 1987 0.537 1988 0.923 1989 0.983 1990 0.968 1991 1.08 1992 0.995 1993 1.143 1994 1.116