# northamerica_usa_co529 - Ophir Creek - 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_co529 - Ophir Creek - 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: Ophir Creek # Location: # Country: United States # Northernmost_Latitude: 38.07 # Southernmost_Latitude: 38.07 # Easternmost_Longitude: -105.13 # Westernmost_Longitude: -105.13 # Elevation: 2438 m #-------------------- # Data_Collection # Collection_Name: northamerica_usa_co529B # Earliest_Year: 1807 # Most_Recent_Year: 1984 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"moisture"}{"T1":"4.16647763272"}{"T2":"15.9570718041"}{"M1":"0.0235886896845"}{"M2":"0.476514695037"} #-------------------- # Species # Species_Name: ponderosa pine # Species_Code: PIPO #-------------------- # 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 1807 0.933 1808 0.942 1809 0.709 1810 1.093 1811 1.108 1812 0.838 1813 0.908 1814 0.81 1815 0.74 1816 0.716 1817 0.651 1818 0.49 1819 0.538 1820 0.942 1821 0.319 1822 0.763 1823 0.932 1824 0.678 1825 1.077 1826 1.366 1827 1.487 1828 1.428 1829 1.386 1830 1.097 1831 1.196 1832 1.17 1833 1.297 1834 1.274 1835 1.346 1836 1.133 1837 1.057 1838 1.055 1839 1.021 1840 1.138 1841 0.532 1842 0.178 1843 0.569 1844 1.07 1845 1.055 1846 0.794 1847 0.809 1848 0.838 1849 1.11 1850 1.042 1851 0.317 1852 0.916 1853 1.285 1854 1.236 1855 1.232 1856 0.802 1857 1.227 1858 1.511 1859 1.032 1860 0.939 1861 0.838 1862 0.727 1863 0.927 1864 0.78 1865 0.809 1866 1.203 1867 1.062 1868 0.989 1869 1.122 1870 1.217 1871 1.018 1872 1.279 1873 0.959 1874 0.79 1875 0.922 1876 1.289 1877 0.938 1878 1.342 1879 0.838 1880 0.192 1881 0.726 1882 1.078 1883 1.001 1884 0.853 1885 0.846 1886 0.777 1887 0.796 1888 0.734 1889 1.126 1890 0.845 1891 1.107 1892 1.401 1893 0.671 1894 1.419 1895 1.594 1896 1.002 1897 1.117 1898 1.079 1899 0.494 1900 0.869 1901 0.781 1902 0.568 1903 1.066 1904 1.295 1905 0.899 1906 1.015 1907 1.516 1908 1.018 1909 0.98 1910 1.229 1911 1.04 1912 1.29 1913 1.075 1914 1.264 1915 1.169 1916 1.139 1917 0.922 1918 1.2 1919 1.197 1920 1.098 1921 1.527 1922 1.144 1923 1.129 1924 0.72 1925 0.236 1926 0.612 1927 0.354 1928 0.517 1929 0.597 1930 0.451 1931 0.755 1932 0.383 1933 0.774 1934 0.711 1935 0.822 1936 0.843 1937 0.978 1938 1.375 1939 0.898 1940 0.944 1941 1.211 1942 1.257 1943 1.005 1944 1.091 1945 1.354 1946 1.098 1947 1.331 1948 1.13 1949 1.249 1950 0.732 1951 0.491 1952 0.655 1953 0.883 1954 0.524 1955 0.606 1956 0.71 1957 1.216 1958 0.951 1959 0.735 1960 0.816 1961 1.162 1962 0.853 1963 0.072 1964 1.003 1965 1.087 1966 0.772 1967 1.467 1968 1.431 1969 1.932 1970 1.339 1971 1.182 1972 0.913 1973 0.803 1974 0.932 1975 1.612 1976 1.123 1977 1.533 1978 0.873 1979 0.952 1980 0.86 1981 1.361 1982 1.425 1983 1.629 1984 1.307