# northamerica_usa_co609 - McGee Gulch - 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_co609 - McGee Gulch - 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: McGee Gulch # Location: # Country: United States # Northernmost_Latitude: 38.85 # Southernmost_Latitude: 38.85 # Easternmost_Longitude: -106.02 # Westernmost_Longitude: -106.02 # Elevation: 2743 m #-------------------- # Data_Collection # Collection_Name: northamerica_usa_co609B # Earliest_Year: 1601 # Most_Recent_Year: 1997 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"moisture"}{"T1":"2.92161323998"}{"T2":"12.741643604"}{"M1":"0.0234722500505"}{"M2":"0.587337548412"} #-------------------- # Species # Species_Name: Douglas fir # Species_Code: PSME #-------------------- # 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 1601 0.649 1602 1.483 1603 1.613 1604 1.591 1605 1.35 1606 1.198 1607 1.005 1608 0.771 1609 0.36 1610 1.138 1611 0.697 1612 0.828 1613 0.855 1614 0.808 1615 1.382 1616 0.815 1617 1.213 1618 1.711 1619 1.538 1620 1.104 1621 1.429 1622 0.705 1623 0.425 1624 0.643 1625 0.686 1626 0.987 1627 0.385 1628 0.601 1629 0.714 1630 1.332 1631 0.596 1632 0.735 1633 1.249 1634 1.548 1635 1.356 1636 1.542 1637 1.554 1638 1.019 1639 1.5 1640 1.624 1641 0.499 1642 0.884 1643 0.886 1644 1.179 1645 0.231 1646 0.421 1647 0.918 1648 0.774 1649 0.759 1650 0.644 1651 0.779 1652 0.897 1653 0.824 1654 0.167 1655 0.972 1656 1.138 1657 1.22 1658 0.485 1659 0.503 1660 1.164 1661 1.47 1662 1.591 1663 1.13 1664 0.456 1665 0.863 1666 0.268 1667 1.102 1668 0.387 1669 0.833 1670 0.841 1671 1.152 1672 1.39 1673 1.065 1674 1.514 1675 0.365 1676 1.169 1677 1.348 1678 1.606 1679 1.138 1680 1.388 1681 0.725 1682 0.96 1683 1.448 1684 0.594 1685 0.677 1686 0.961 1687 0.846 1688 0.686 1689 1.524 1690 0.959 1691 0.708 1692 1.775 1693 1.523 1694 0.423 1695 1.112 1696 0.614 1697 0.92 1698 1.03 1699 1.156 1700 0.73 1701 1.618 1702 1.051 1703 0.747 1704 0.637 1705 0.401 1706 1.239 1707 0.521 1708 0.802 1709 0.303 1710 1.175 1711 1.323 1712 1.352 1713 1.264 1714 0.514 1715 1.014 1716 0.936 1717 0.893 1718 1.571 1719 1.284 1720 1.853 1721 1.892 1722 1.954 1723 1.656 1724 1.614 1725 1.581 1726 1.732 1727 1.212 1728 1.062 1729 -0.02 1730 0.549 1731 0.679 1732 0.79 1733 0.712 1734 1.405 1735 0.469 1736 0.744 1737 0.228 1738 1.091 1739 0.968 1740 1.038 1741 0.853 1742 0.694 1743 1.166 1744 1.218 1745 1.241 1746 1.87 1747 1.548 1748 0.32 1749 1.142 1750 0.83 1751 1.036 1752 0.329 1753 1.013 1754 1.181 1755 1.478 1756 0.617 1757 0.945 1758 1.143 1759 1.123 1760 1.23 1761 2.148 1762 1.617 1763 0.332 1764 0.355 1765 1.141 1766 1.044 1767 0.647 1768 0.958 1769 1.118 1770 1.096 1771 1.259 1772 1.358 1773 0.7 1774 0.837 1775 0.406 1776 0.763 1777 0.383 1778 0.342 1779 0.58 1780 0.296 1781 0.533 1782 0.618 1783 1.091 1784 1.183 1785 1.087 1786 0.865 1787 1.272 1788 1.262 1789 0.41 1790 1.77 1791 1.343 1792 1.145 1793 1.247 1794 1.308 1795 0.661 1796 1.188 1797 1.058 1798 0.469 1799 1.064 1800 1.362 1801 0.288 1802 0.586 1803 1.319 1804 0.764 1805 0.747 1806 0.876 1807 0.809 1808 1.15 1809 0.512 1810 0.689 1811 0.877 1812 1.01 1813 0.786 1814 0.984 1815 1.046 1816 1.542 1817 1.229 1818 0.333 1819 1.214 1820 1.05 1821 0.647 1822 0.757 1823 1.314 1824 0.593 1825 1.216 1826 1.418 1827 1.122 1828 1.46 1829 1.285 1830 1.043 1831 1.354 1832 1.134 1833 1.46 1834 0.467 1835 1.172 1836 1.023 1837 1.02 1838 1.515 1839 1.102 1840 0.811 1841 1.582 1842 0.529 1843 1.429 1844 1.377 1845 0.895 1846 0.95 1847 0.552 1848 0.947 1849 1.105 1850 0.936 1851 0.027 1852 0.904 1853 1.108 1854 1.047 1855 0.828 1856 0.865 1857 1.085 1858 1.231 1859 0.854 1860 0.801 1861 0.164 1862 0.99 1863 0.876 1864 1.324 1865 0.993 1866 1.352 1867 1.376 1868 1.099 1869 1.849 1870 0.885 1871 0.81 1872 1.258 1873 0.627 1874 0.939 1875 0.571 1876 1.069 1877 1.339 1878 1.592 1879 0.381 1880 0.005 1881 0.598 1882 1.072 1883 0.964 1884 0.727 1885 1.206 1886 0.798 1887 0.534 1888 0.728 1889 0.738 1890 0.49 1891 1.343 1892 0.707 1893 0.038 1894 0.984 1895 1.297 1896 0.332 1897 0.651 1898 0.942 1899 0.099 1900 0.764 1901 0.459 1902 0.084 1903 1.044 1904 0.951 1905 0.831 1906 0.674 1907 1.306 1908 0.565 1909 0.883 1910 1.194 1911 1.354 1912 1.276 1913 0.861 1914 1.636 1915 1.185 1916 1.272 1917 1.236 1918 1.222 1919 1.527 1920 1.169 1921 1.597 1922 0.387 1923 0.983 1924 1.089 1925 0.278 1926 1.513 1927 0.569 1928 1.206 1929 0.511 1930 1.362 1931 0.86 1932 0.838 1933 0.758 1934 0.616 1935 1.047 1936 0.925 1937 1.054 1938 0.978 1939 0.709 1940 0.339 1941 1.136 1942 1.181 1943 0.607 1944 0.726 1945 0.77 1946 0.941 1947 0.971 1948 1.102 1949 1.622 1950 1.001 1951 0.5 1952 1.224 1953 0.879 1954 0.701 1955 0.551 1956 0.964 1957 1.204 1958 0.881 1959 0.463 1960 1.284 1961 0.726 1962 1.218 1963 0.33 1964 1.011 1965 1.382 1966 1.171 1967 0.663 1968 0.994 1969 1.726 1970 1.568 1971 1.224 1972 0.775 1973 1.129 1974 0.278 1975 1.338 1976 0.851 1977 1.151 1978 0.244 1979 1.21 1980 0.831 1981 0.647 1982 1.092 1983 1.584 1984 1.162 1985 1.784 1986 1.341 1987 1.815 1988 1.453 1989 1.739 1990 1.371 1991 1.528 1992 1.161 1993 1.205 1994 1.275 1995 1.868 1996 0.791 1997 1.282