# europe_swed004 - Muddas National Park A - 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_swed004 - Muddas National Park A - 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: Muddas National Park A # Location: # Country: Sweden # Northernmost_Latitude: 66.85 # Southernmost_Latitude: 66.85 # Easternmost_Longitude: 20.37 # Westernmost_Longitude: 20.37 # Elevation: 450 m #-------------------- # Data_Collection # Collection_Name: europe_swed004B # Earliest_Year: 1710 # Most_Recent_Year: 1971 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"temperature"}{"T1":"6.51668483165"}{"T2":"19.6372481537"}{"M1":"0.0225145931792"}{"M2":"0.270914981227"} #-------------------- # 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 1710 0.662 1711 0.68 1712 0.743 1713 0.676 1714 0.779 1715 0.791 1716 0.653 1717 0.753 1718 0.88 1719 0.756 1720 0.846 1721 0.884 1722 0.938 1723 0.962 1724 1.006 1725 1.129 1726 1.033 1727 1.413 1728 1.075 1729 1.186 1730 1.747 1731 1.462 1732 1.357 1733 1.087 1734 0.678 1735 1.013 1736 1.212 1737 0.818 1738 1.258 1739 1.151 1740 0.775 1741 0.581 1742 0.814 1743 0.857 1744 0.986 1745 0.836 1746 0.941 1747 0.75 1748 1.021 1749 0.84 1750 1.023 1751 0.874 1752 0.915 1753 0.896 1754 1.058 1755 1.368 1756 1.498 1757 1.298 1758 1.016 1759 1.375 1760 1.435 1761 1.482 1762 1.494 1763 1.359 1764 1.192 1765 1.024 1766 1.213 1767 0.937 1768 0.819 1769 0.584 1770 0.593 1771 0.709 1772 0.934 1773 0.733 1774 0.91 1775 0.872 1776 0.805 1777 0.886 1778 1.0 1779 0.975 1780 1.145 1781 0.895 1782 1.04 1783 0.792 1784 0.976 1785 1.168 1786 0.745 1787 0.825 1788 1.029 1789 1.173 1790 0.806 1791 0.751 1792 0.863 1793 0.746 1794 0.921 1795 1.069 1796 0.935 1797 0.915 1798 1.088 1799 1.355 1800 0.815 1801 0.862 1802 0.984 1803 0.716 1804 1.105 1805 1.074 1806 0.492 1807 0.843 1808 0.89 1809 0.914 1810 0.766 1811 0.922 1812 0.695 1813 0.748 1814 0.89 1815 0.839 1816 1.078 1817 0.973 1818 1.088 1819 1.274 1820 1.013 1821 0.57 1822 0.634 1823 1.097 1824 0.927 1825 1.118 1826 1.709 1827 1.598 1828 1.378 1829 1.317 1830 1.126 1831 1.354 1832 1.102 1833 1.061 1834 1.234 1835 0.838 1836 1.04 1837 0.379 1838 0.951 1839 0.809 1840 0.823 1841 0.758 1842 0.885 1843 1.068 1844 0.783 1845 1.196 1846 1.079 1847 1.024 1848 0.871 1849 0.857 1850 0.604 1851 0.943 1852 0.964 1853 0.971 1854 1.377 1855 1.218 1856 0.998 1857 0.662 1858 1.01 1859 0.978 1860 0.889 1861 0.988 1862 0.788 1863 0.91 1864 0.974 1865 0.725 1866 0.867 1867 0.806 1868 0.904 1869 0.848 1870 0.781 1871 0.788 1872 0.858 1873 1.128 1874 0.867 1875 0.797 1876 0.926 1877 0.781 1878 0.767 1879 1.009 1880 0.682 1881 0.53 1882 0.751 1883 0.825 1884 0.906 1885 0.874 1886 0.79 1887 0.674 1888 0.555 1889 0.755 1890 0.982 1891 0.926 1892 0.643 1893 0.489 1894 0.816 1895 0.889 1896 1.112 1897 0.844 1898 1.101 1899 1.093 1900 0.538 1901 0.862 1902 0.722 1903 0.521 1904 0.589 1905 0.717 1906 0.755 1907 0.716 1908 0.871 1909 0.712 1910 0.72 1911 0.871 1912 1.098 1913 1.073 1914 1.42 1915 1.428 1916 1.224 1917 0.96 1918 0.964 1919 1.009 1920 1.092 1921 1.113 1922 1.112 1923 1.247 1924 1.115 1925 1.168 1926 1.142 1927 1.222 1928 0.694 1929 0.822 1930 1.261 1931 0.934 1932 0.886 1933 0.987 1934 1.267 1935 1.076 1936 0.853 1937 1.234 1938 1.198 1939 1.055 1940 0.806 1941 1.148 1942 0.957 1943 0.938 1944 1.145 1945 1.25 1946 1.117 1947 1.327 1948 1.262 1949 1.131 1950 1.101 1951 0.973 1952 0.976 1953 1.203 1954 1.46 1955 1.458 1956 0.906 1957 1.066 1958 0.996 1959 1.202 1960 1.243 1961 0.845 1962 1.122 1963 0.826 1964 1.185 1965 0.843 1966 1.018 1967 1.225 1968 1.197 1969 1.099 1970 1.175 1971 1.058