# southamerica_arge027 - Castano Overo Maduro - 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: southamerica_arge027 - Castano Overo Maduro - 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: Castano Overo Maduro # Location: # Country: Argentina # Northernmost_Latitude: -41.25 # Southernmost_Latitude: -41.25 # Easternmost_Longitude: -71.75 # Westernmost_Longitude: -71.75 # Elevation: 1100 m #-------------------- # Data_Collection # Collection_Name: southamerica_arge027B # Earliest_Year: 1763 # Most_Recent_Year: 1982 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"temperature"}{"T1":"2.36043436103"}{"T2":"12.0880655746"}{"M1":"0.0225963759617"}{"M2":"0.578361429663"} #-------------------- # Species # Species_Name: lenga nothofagus # Species_Code: NOPU #-------------------- # 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 1763 1.233 1764 1.285 1765 1.029 1766 0.884 1767 0.98 1768 0.925 1769 0.85 1770 1.039 1771 1.055 1772 0.964 1773 0.916 1774 0.871 1775 0.477 1776 0.766 1777 0.552 1778 0.616 1779 0.596 1780 0.824 1781 1.01 1782 0.998 1783 1.069 1784 1.027 1785 1.052 1786 0.932 1787 0.808 1788 0.947 1789 1.04 1790 0.706 1791 1.112 1792 1.113 1793 1.116 1794 1.217 1795 1.062 1796 1.093 1797 1.533 1798 1.464 1799 1.246 1800 1.079 1801 1.12 1802 0.662 1803 0.83 1804 0.997 1805 0.805 1806 1.258 1807 1.063 1808 1.218 1809 1.361 1810 0.931 1811 0.726 1812 1.082 1813 0.965 1814 1.299 1815 1.266 1816 1.027 1817 1.118 1818 0.955 1819 1.344 1820 0.582 1821 0.875 1822 1.436 1823 1.431 1824 0.81 1825 0.923 1826 0.815 1827 1.057 1828 1.233 1829 1.033 1830 0.5 1831 0.78 1832 0.924 1833 0.725 1834 0.876 1835 1.238 1836 1.296 1837 1.216 1838 1.302 1839 1.326 1840 1.067 1841 1.138 1842 1.099 1843 1.064 1844 1.082 1845 1.209 1846 1.047 1847 0.934 1848 1.043 1849 0.823 1850 0.713 1851 0.629 1852 0.843 1853 0.841 1854 0.349 1855 0.843 1856 0.735 1857 0.923 1858 0.856 1859 0.841 1860 0.929 1861 0.901 1862 1.12 1863 1.247 1864 1.007 1865 1.104 1866 1.261 1867 0.903 1868 1.365 1869 1.203 1870 1.117 1871 1.059 1872 1.223 1873 1.32 1874 0.979 1875 1.075 1876 0.73 1877 0.948 1878 0.19 1879 0.672 1880 1.081 1881 0.838 1882 0.961 1883 0.911 1884 1.314 1885 0.97 1886 0.99 1887 0.84 1888 0.724 1889 0.74 1890 0.861 1891 0.927 1892 1.38 1893 1.186 1894 1.174 1895 1.126 1896 0.892 1897 1.171 1898 1.33 1899 1.122 1900 1.171 1901 1.233 1902 0.99 1903 1.204 1904 1.116 1905 1.196 1906 0.931 1907 0.894 1908 0.412 1909 0.533 1910 0.607 1911 0.566 1912 0.346 1913 0.752 1914 0.679 1915 0.768 1916 0.947 1917 0.865 1918 1.043 1919 0.942 1920 0.797 1921 0.966 1922 0.957 1923 0.74 1924 1.201 1925 0.915 1926 0.766 1927 0.893 1928 0.99 1929 0.888 1930 0.988 1931 1.087 1932 1.012 1933 1.029 1934 1.506 1935 1.121 1936 0.918 1937 1.134 1938 1.102 1939 1.277 1940 1.14 1941 0.914 1942 1.141 1943 0.888 1944 0.61 1945 0.4 1946 0.657 1947 0.985 1948 0.839 1949 0.881 1950 0.972 1951 1.429 1952 0.972 1953 1.398 1954 1.159 1955 0.756 1956 0.934 1957 0.754 1958 0.609 1959 0.614 1960 0.662 1961 0.778 1962 0.768 1963 1.169 1964 1.597 1965 1.131 1966 0.973 1967 1.082 1968 1.11 1969 1.202 1970 0.822 1971 1.05 1972 0.839 1973 0.676 1974 1.028 1975 0.601 1976 0.761 1977 0.787 1978 0.511 1979 0.644 1980 0.825 1981 0.729 1982 0.389