# asia_russ165w - Kotuykan River - 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: asia_russ165w - Kotuykan River - 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: Kotuykan River # Location: # Country: Russia # Northernmost_Latitude: 70.6 # Southernmost_Latitude: 70.6 # Easternmost_Longitude: 104.25 # Westernmost_Longitude: 104.25 # Elevation: 130 m #-------------------- # Data_Collection # Collection_Name: asia_russ165wB # Earliest_Year: 1872 # Most_Recent_Year: 1990 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"temperature"}{"T1":"3.93353681619"}{"T2":"18.8187129561"}{"M1":"0.0211643550179"}{"M2":"0.208873808632"} #-------------------- # Species # Species_Name: Dahurian larch # Species_Code: LAGM #-------------------- # 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 1872 0.766 1873 0.71 1874 0.634 1875 0.681 1876 0.686 1877 0.92 1878 1.022 1879 1.14 1880 1.112 1881 1.41 1882 1.284 1883 1.423 1884 1.471 1885 0.782 1886 1.0 1887 1.099 1888 1.236 1889 1.127 1890 0.984 1891 0.925 1892 1.177 1893 1.09 1894 0.959 1895 1.0 1896 0.994 1897 1.276 1898 1.271 1899 0.644 1900 0.223 1901 0.716 1902 0.773 1903 0.47 1904 0.273 1905 0.47 1906 0.644 1907 0.495 1908 0.774 1909 0.988 1910 0.637 1911 0.587 1912 0.256 1913 0.641 1914 1.019 1915 1.215 1916 0.818 1917 0.727 1918 1.059 1919 1.142 1920 0.868 1921 0.59 1922 1.09 1923 1.185 1924 1.128 1925 0.718 1926 1.059 1927 0.688 1928 0.819 1929 0.86 1930 1.008 1931 0.653 1932 1.166 1933 1.499 1934 1.528 1935 1.743 1936 1.288 1937 1.483 1938 1.504 1939 1.841 1940 1.692 1941 1.644 1942 1.302 1943 1.069 1944 0.72 1945 1.349 1946 1.449 1947 0.912 1948 1.275 1949 0.422 1950 1.147 1951 0.751 1952 1.06 1953 1.297 1954 1.154 1955 1.039 1956 0.886 1957 0.633 1958 0.9 1959 1.021 1960 0.862 1961 0.746 1962 1.033 1963 0.781 1964 0.966 1965 0.679 1966 0.561 1967 0.997 1968 0.851 1969 0.852 1970 1.201 1971 0.756 1972 1.124 1973 0.528 1974 0.442 1975 0.99 1976 1.249 1977 1.021 1978 0.657 1979 1.38 1980 0.386 1981 0.732 1982 1.004 1983 1.056 1984 1.16 1985 1.184 1986 0.991 1987 1.004 1988 1.394 1989 0.5 1990 0.946