# northamerica_usa_wa012 - Kamiak Butte - 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_wa012 - Kamiak Butte - 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: Kamiak Butte # Location: # Country: United States # Northernmost_Latitude: 46.85 # Southernmost_Latitude: 46.85 # Easternmost_Longitude: -117.17 # Westernmost_Longitude: -117.17 # Elevation: 765 m #-------------------- # Data_Collection # Collection_Name: northamerica_usa_wa012B # Earliest_Year: 1844 # Most_Recent_Year: 1975 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"moisture"}{"T1":"4.54687183948"}{"T2":"15.1354883219"}{"M1":"0.022418662538"}{"M2":"0.511798753467"} #-------------------- # 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 1844 0.878 1845 1.0 1846 1.06 1847 0.721 1848 0.897 1849 0.831 1850 0.787 1851 0.902 1852 0.922 1853 0.997 1854 0.943 1855 1.113 1856 1.116 1857 1.183 1858 0.995 1859 0.905 1860 1.193 1861 1.4 1862 0.884 1863 1.054 1864 1.143 1865 0.981 1866 1.458 1867 0.964 1868 0.665 1869 0.602 1870 0.861 1871 1.092 1872 0.793 1873 1.115 1874 0.964 1875 0.659 1876 0.963 1877 1.318 1878 1.246 1879 1.219 1880 1.111 1881 1.323 1882 1.016 1883 0.688 1884 0.657 1885 1.074 1886 0.813 1887 0.952 1888 1.076 1889 0.821 1890 0.561 1891 0.851 1892 0.966 1893 0.674 1894 1.106 1895 1.24 1896 1.178 1897 1.196 1898 0.967 1899 0.659 1900 1.391 1901 1.082 1902 0.954 1903 1.231 1904 1.266 1905 0.912 1906 0.995 1907 1.086 1908 0.836 1909 1.077 1910 0.973 1911 0.826 1912 0.957 1913 1.522 1914 1.299 1915 1.561 1916 1.288 1917 0.637 1918 0.89 1919 1.06 1920 0.845 1921 1.361 1922 0.569 1923 0.723 1924 0.824 1925 0.718 1926 0.687 1927 1.145 1928 1.133 1929 0.556 1930 0.539 1931 0.788 1932 0.693 1933 0.527 1934 0.991 1935 0.665 1936 0.308 1937 0.696 1938 0.895 1939 0.782 1940 0.882 1941 1.393 1942 1.304 1943 1.276 1944 1.207 1945 0.82 1946 1.233 1947 1.011 1948 0.655 1949 0.828 1950 0.883 1951 1.028 1952 1.131 1953 0.961 1954 1.152 1955 1.215 1956 1.225 1957 1.205 1958 0.773 1959 1.159 1960 1.486 1961 1.207 1962 1.348 1963 1.547 1964 0.728 1965 0.964 1966 1.141 1967 0.827 1968 0.797 1969 0.978 1970 0.72 1971 0.988 1972 1.489 1973 1.034 1974 0.95 1975 0.83