# northamerica_usa_mn005 - Saganaga Lake Summed - 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: northamerica_usa_mn005 - Saganaga Lake Summed - 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: Saganaga Lake Summed # Location: # Country: United States # Northernmost_Latitude: 48.22 # Southernmost_Latitude: 48.22 # Easternmost_Longitude: -90.9 # Westernmost_Longitude: -90.9 # Elevation: 445 m #-------------------- # Data_Collection # Collection_Name: northamerica_usa_mn005B # Earliest_Year: 1677 # Most_Recent_Year: 1972 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"moisture"}{"T1":"3.3305945585"}{"T2":"13.034531777"}{"M1":"0.0221784700941"}{"M2":"0.596748026589"} #-------------------- # Species # Species_Name: red pine # Species_Code: PIRE #-------------------- # 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 1677 0.521 1678 0.694 1679 1.062 1680 0.831 1681 0.909 1682 0.741 1683 1.1 1684 0.948 1685 1.069 1686 0.983 1687 1.157 1688 0.817 1689 0.856 1690 0.782 1691 0.755 1692 0.909 1693 1.01 1694 1.264 1695 1.284 1696 1.042 1697 0.933 1698 1.15 1699 0.909 1700 1.159 1701 1.019 1702 1.074 1703 1.315 1704 1.216 1705 1.276 1706 1.047 1707 1.116 1708 1.089 1709 1.004 1710 1.044 1711 1.215 1712 0.953 1713 1.152 1714 1.034 1715 1.155 1716 1.084 1717 0.802 1718 0.884 1719 0.902 1720 1.14 1721 0.813 1722 0.941 1723 1.183 1724 0.835 1725 0.906 1726 0.906 1727 0.847 1728 0.967 1729 1.055 1730 1.106 1731 1.031 1732 1.117 1733 1.025 1734 1.139 1735 0.934 1736 0.413 1737 0.907 1738 0.936 1739 0.388 1740 0.89 1741 0.662 1742 0.44 1743 0.546 1744 0.748 1745 0.854 1746 1.13 1747 1.222 1748 1.284 1749 1.281 1750 1.226 1751 0.971 1752 1.125 1753 1.004 1754 0.99 1755 0.76 1756 1.072 1757 0.808 1758 0.808 1759 0.908 1760 0.587 1761 0.681 1762 1.102 1763 0.937 1764 0.782 1765 1.107 1766 0.845 1767 1.247 1768 0.966 1769 0.992 1770 0.971 1771 0.902 1772 0.995 1773 0.838 1774 0.959 1775 0.961 1776 0.538 1777 1.016 1778 1.318 1779 1.271 1780 0.811 1781 1.188 1782 1.06 1783 1.171 1784 1.128 1785 0.908 1786 0.793 1787 1.304 1788 1.105 1789 1.107 1790 0.96 1791 0.875 1792 0.921 1793 1.09 1794 0.79 1795 0.845 1796 0.909 1797 0.769 1798 0.799 1799 0.94 1800 0.849 1801 1.08 1802 1.408 1803 1.213 1804 0.331 1805 1.046 1806 0.751 1807 0.66 1808 0.666 1809 0.703 1810 0.831 1811 0.962 1812 0.919 1813 1.132 1814 1.362 1815 1.397 1816 1.245 1817 1.291 1818 0.973 1819 1.519 1820 1.457 1821 0.884 1822 1.514 1823 1.148 1824 1.085 1825 1.295 1826 1.292 1827 1.41 1828 1.686 1829 1.048 1830 1.311 1831 1.158 1832 1.4 1833 1.361 1834 1.777 1835 1.116 1836 1.289 1837 0.999 1838 1.136 1839 0.89 1840 0.719 1841 1.039 1842 1.239 1843 1.141 1844 1.205 1845 1.087 1846 0.799 1847 1.214 1848 1.326 1849 1.224 1850 1.185 1851 1.14 1852 0.938 1853 0.579 1854 1.186 1855 0.738 1856 1.131 1857 1.042 1858 1.159 1859 1.24 1860 0.879 1861 1.119 1862 0.635 1863 0.6 1864 0.413 1865 0.748 1866 0.473 1867 0.795 1868 0.764 1869 0.726 1870 0.821 1871 0.564 1872 0.969 1873 1.025 1874 0.678 1875 0.573 1876 0.876 1877 1.086 1878 0.891 1879 0.714 1880 0.897 1881 0.948 1882 0.555 1883 0.693 1884 0.716 1885 0.956 1886 0.629 1887 0.867 1888 0.888 1889 0.796 1890 0.739 1891 0.745 1892 0.875 1893 0.683 1894 0.722 1895 1.22 1896 1.209 1897 1.062 1898 1.278 1899 1.365 1900 0.941 1901 1.353 1902 1.069 1903 0.845 1904 1.123 1905 1.364 1906 0.962 1907 0.951 1908 1.304 1909 0.743 1910 0.268 1911 0.684 1912 0.823 1913 0.745 1914 0.728 1915 1.05 1916 1.001 1917 1.048 1918 1.011 1919 0.811 1920 1.038 1921 0.601 1922 0.784 1923 0.698 1924 0.464 1925 0.974 1926 1.03 1927 0.965 1928 1.079 1929 0.852 1930 1.106 1931 0.713 1932 0.787 1933 0.952 1934 0.698 1935 0.944 1936 0.732 1937 0.66 1938 0.927 1939 0.905 1940 0.78 1941 0.749 1942 0.936 1943 0.801 1944 1.034 1945 1.025 1946 0.953 1947 1.104 1948 0.656 1949 0.941 1950 1.006 1951 1.021 1952 1.038 1953 1.188 1954 0.928 1955 0.858 1956 1.028 1957 0.956 1958 0.682 1959 0.649 1960 0.814 1961 0.711 1962 1.133 1963 1.046 1964 1.18 1965 1.505 1966 1.096 1967 1.28 1968 1.44 1969 1.195 1970 0.934 1971 1.005 1972 1.09