# northamerica_usa_mn022 - Cass Lake 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: northamerica_usa_mn022 - Cass Lake 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: Cass Lake B # Location: # Country: United States # Northernmost_Latitude: 47.27 # Southernmost_Latitude: 47.27 # Easternmost_Longitude: -94.38 # Westernmost_Longitude: -94.38 # Elevation: 130 m #-------------------- # Data_Collection # Collection_Name: northamerica_usa_mn022B # Earliest_Year: 1823 # Most_Recent_Year: 1988 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"moisture"}{"T1":"5.10996661504"}{"T2":"15.9703684754"}{"M1":"0.023165880264"}{"M2":"0.540571058042"} #-------------------- # Species # Species_Name: white oak # Species_Code: QUAL #-------------------- # 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 1823 1.263 1824 1.23 1825 0.933 1826 1.207 1827 1.402 1828 1.409 1829 1.337 1830 1.055 1831 0.967 1832 1.19 1833 1.07 1834 1.233 1835 0.995 1836 1.025 1837 0.939 1838 0.717 1839 0.725 1840 0.802 1841 1.035 1842 0.652 1843 0.795 1844 0.552 1845 0.39 1846 0.605 1847 0.518 1848 0.451 1849 0.557 1850 0.796 1851 0.952 1852 0.996 1853 0.94 1854 0.894 1855 0.546 1856 0.826 1857 0.688 1858 0.612 1859 0.657 1860 0.708 1861 0.66 1862 0.585 1863 0.485 1864 0.477 1865 1.11 1866 1.181 1867 1.099 1868 1.057 1869 1.138 1870 1.35 1871 0.889 1872 1.157 1873 1.033 1874 0.992 1875 0.996 1876 1.078 1877 1.27 1878 1.081 1879 1.291 1880 1.365 1881 1.412 1882 1.134 1883 0.931 1884 0.913 1885 0.618 1886 0.782 1887 0.59 1888 0.692 1889 0.382 1890 0.639 1891 0.583 1892 0.933 1893 0.793 1894 0.996 1895 1.014 1896 1.323 1897 0.737 1898 1.1 1899 1.296 1900 0.986 1901 1.611 1902 1.574 1903 1.116 1904 1.072 1905 1.14 1906 0.746 1907 1.091 1908 1.168 1909 1.111 1910 0.855 1911 0.948 1912 1.029 1913 1.094 1914 1.309 1915 0.592 1916 0.894 1917 0.769 1918 0.996 1919 0.926 1920 0.995 1921 0.861 1922 1.12 1923 1.176 1924 1.035 1925 0.839 1926 0.797 1927 0.814 1928 0.849 1929 0.824 1930 0.401 1931 0.482 1932 1.004 1933 1.12 1934 0.764 1935 1.095 1936 0.977 1937 0.434 1938 0.608 1939 0.835 1940 1.118 1941 0.571 1942 1.17 1943 1.263 1944 1.645 1945 1.489 1946 1.034 1947 1.503 1948 1.129 1949 0.989 1950 1.474 1951 1.217 1952 0.765 1953 1.143 1954 1.305 1955 1.403 1956 0.681 1957 1.182 1958 0.621 1959 1.069 1960 1.026 1961 0.947 1962 1.238 1963 1.235 1964 0.609 1965 0.917 1966 0.969 1967 0.998 1968 1.071 1969 1.214 1970 0.965 1971 0.984 1972 1.046 1973 1.316 1974 0.971 1975 0.942 1976 0.958 1977 1.16 1978 1.023 1979 0.977 1980 0.776 1981 1.014 1982 0.976 1983 0.647 1984 0.847 1985 1.04 1986 1.057 1987 1.256 1988 1.143