# northamerica_usa_tx018 - Brazos 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: northamerica_usa_tx018 - Brazos 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: Brazos River # Location: # Country: United States # Northernmost_Latitude: 30.93 # Southernmost_Latitude: 30.93 # Easternmost_Longitude: -96.8 # Westernmost_Longitude: -96.8 # Elevation: 105 m #-------------------- # Data_Collection # Collection_Name: northamerica_usa_tx018B # Earliest_Year: 1694 # Most_Recent_Year: 1995 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"moisture"}{"T1":"5.10031864541"}{"T2":"17.7920452594"}{"M1":"0.0225266663744"}{"M2":"0.491203653539"} #-------------------- # Species # Species_Name: post oak # Species_Code: QUST #-------------------- # 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 1694 1.548 1695 1.73 1696 1.009 1697 0.8 1698 0.842 1699 0.495 1700 0.538 1701 0.938 1702 1.377 1703 0.955 1704 0.659 1705 1.186 1706 1.777 1707 1.407 1708 1.15 1709 1.371 1710 1.012 1711 0.564 1712 0.782 1713 0.967 1714 0.487 1715 0.446 1716 0.513 1717 0.517 1718 1.429 1719 2.019 1720 1.781 1721 2.014 1722 1.208 1723 1.397 1724 1.072 1725 1.061 1726 1.252 1727 1.05 1728 0.893 1729 0.79 1730 0.429 1731 0.565 1732 0.956 1733 0.79 1734 0.473 1735 1.155 1736 0.516 1737 0.787 1738 0.617 1739 1.022 1740 1.416 1741 0.665 1742 0.663 1743 0.702 1744 0.832 1745 0.836 1746 1.092 1747 1.013 1748 0.734 1749 0.938 1750 0.621 1751 0.693 1752 0.564 1753 0.917 1754 0.901 1755 0.507 1756 0.912 1757 1.084 1758 1.382 1759 1.121 1760 1.418 1761 0.893 1762 1.033 1763 0.842 1764 0.519 1765 0.964 1766 0.732 1767 0.996 1768 0.84 1769 0.875 1770 0.879 1771 0.992 1772 0.615 1773 0.943 1774 0.656 1775 0.713 1776 0.816 1777 0.693 1778 0.79 1779 0.72 1780 0.811 1781 0.696 1782 0.985 1783 0.954 1784 0.944 1785 0.677 1786 0.86 1787 0.797 1788 0.933 1789 0.607 1790 0.455 1791 0.782 1792 1.132 1793 1.382 1794 1.526 1795 1.321 1796 1.16 1797 1.196 1798 0.873 1799 1.173 1800 0.741 1801 0.766 1802 1.011 1803 0.952 1804 0.824 1805 0.662 1806 0.685 1807 0.818 1808 0.801 1809 1.119 1810 1.441 1811 1.288 1812 1.328 1813 1.156 1814 0.999 1815 1.01 1816 0.991 1817 1.047 1818 1.312 1819 1.068 1820 0.745 1821 0.801 1822 0.627 1823 1.09 1824 0.71 1825 0.809 1826 0.894 1827 0.849 1828 1.093 1829 0.746 1830 0.912 1831 0.868 1832 0.998 1833 1.578 1834 1.52 1835 0.83 1836 1.036 1837 0.717 1838 0.97 1839 0.97 1840 0.883 1841 0.827 1842 0.548 1843 0.989 1844 1.075 1845 0.96 1846 1.104 1847 0.842 1848 0.676 1849 0.955 1850 1.302 1851 1.201 1852 0.898 1853 0.83 1854 0.968 1855 0.631 1856 0.828 1857 0.493 1858 0.993 1859 0.596 1860 0.803 1861 0.948 1862 1.001 1863 1.052 1864 0.864 1865 1.201 1866 1.368 1867 1.793 1868 1.633 1869 2.121 1870 1.532 1871 1.642 1872 1.329 1873 1.053 1874 1.039 1875 1.222 1876 0.906 1877 1.325 1878 1.105 1879 0.898 1880 1.312 1881 1.149 1882 1.431 1883 1.24 1884 1.564 1885 1.305 1886 0.96 1887 0.629 1888 1.23 1889 0.765 1890 1.761 1891 1.435 1892 1.215 1893 0.954 1894 0.95 1895 0.841 1896 0.889 1897 1.094 1898 1.002 1899 0.73 1900 1.31 1901 0.952 1902 0.577 1903 1.122 1904 0.706 1905 1.188 1906 0.893 1907 0.711 1908 1.101 1909 0.803 1910 0.761 1911 1.006 1912 0.966 1913 0.78 1914 1.044 1915 0.929 1916 0.846 1917 0.396 1918 0.862 1919 1.088 1920 1.083 1921 1.5 1922 1.298 1923 0.993 1924 1.425 1925 0.248 1926 1.1 1927 1.159 1928 0.807 1929 1.099 1930 1.058 1931 0.898 1932 1.097 1933 1.001 1934 0.788 1935 1.183 1936 1.083 1937 0.847 1938 1.145 1939 0.686 1940 0.989 1941 1.047 1942 0.974 1943 0.923 1944 1.386 1945 1.168 1946 1.445 1947 1.425 1948 1.107 1949 1.103 1950 1.224 1951 0.759 1952 0.737 1953 0.672 1954 0.88 1955 0.6 1956 0.555 1957 0.826 1958 0.83 1959 0.863 1960 0.987 1961 1.002 1962 1.086 1963 0.729 1964 0.804 1965 1.143 1966 1.098 1967 0.637 1968 1.161 1969 0.783 1970 1.196 1971 0.538 1972 0.721 1973 1.215 1974 0.795 1975 1.151 1976 1.412 1977 1.183 1978 0.682 1979 0.879 1980 1.033 1981 0.814 1982 0.954 1983 1.014 1984 0.684 1985 1.249 1986 0.995 1987 0.996 1988 0.746 1989 0.876 1990 0.942 1991 1.156 1992 1.005 1993 1.143 1994 0.78 1995 1.017