# northamerica_usa_mo006 - Lower Rock 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: # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/24611 # # Original_Source_URL:https://www.ncdc.noaa.gov/paleo/study/3170 # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Tree Rings #-------------------- # Contribution_Date # Date: 2016-01-07 #-------------------- # Title # Study_Name: northamerica_usa_mo006 - Lower Rock 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. #-------------------- # Authors: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G.J., Noone, D., Perkins, W.A., and E. Steig # Published_Date_or_Year: 2018 # Published_Title: Additions to the last millennium reanalysis multi-proxy database # Journal_Name: Data Science Journal # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G., J., Noone, D., Perkins, W.A., and E. Steig, submitted. Additions to the last millennium reanalysis multi-proxy database. Data Science Journal. # Abstract: Progress in paleoclimatology increasingly occurs via data syntheses. We describe additions to a collection prepared for use in paleoclimate state estimation, specifically the Last Millennium Reanalysis (LMR). The 2290 additional series include 2152 tree ring chronologies and 138 other series. They supplement the collection used previously and together form a database titled LMRdb 1.0.0. The additional data draws from lake core, ice core, coral, speleothem, and tree ring archives, using published data primarily from the NOAA Paleoclimatology archive and a set of tree ring width chronologies standardized from raw International Tree Ring Data Bank ring width series. In contrast to many previous paleo compilations, the data were not selected (screened) on the basis of their environmental correlation, multi-century length, or other attributes. The inclusion of proxies sensitive to moisture and other environmental variables expands their use in data assimilation. A preliminary calibration using linear regression with mean annual temperature reveals characteristics of the proxy series and their relationship to temperature, as well as the noise and error characteristics of the records. The additional records are structured as individual files in the NOAA Paleoclimatology format and archived at NOAA Paleoclimatology (Anderson et al. 2018) and will continue to be improved and expanded as part of the LMR Project. The additions represent a four-fold increase in the number of records available for assimilation, provide expanded geographic coverage, and add additional proxy variables. Applications include data assimilation, proxy system model development, and paleoclimate reconstruction using climate field reconstruction and other methods. #------------------ # Funding_Agency # Funding_Agency_Name: Swiss National Science Foundation # Grant: #-------------------- # Funding_Agency_Name: National Science Foundation # Grant:AGS-1304263 # Funding_Agency_Name: National Oceanic and Atmospheric Administration # Grant:NA14OAR4310176 #------------------ # Site_Information # Site_Name: Lower Rock Creek # Location: # Country: United States # Northernmost_Latitude: 37.5 # Southernmost_Latitude: 37.5 # Easternmost_Longitude: -90.5 # Westernmost_Longitude: -90.5 # Elevation: 300 m #-------------------- # Data_Collection # Collection_Name: northamerica_usa_mo006B # Earliest_Year: 1816 # Most_Recent_Year: 1981 # Time_Unit: y_ad # Core_Length: # Notes: {"database":{"database1":"LMR","database2":"Breits"}} {"climateInterpretation":{"basis":"", "climateVariable":"M", "climateVariableDetail":"air", "interpDirection":"positive", "seasonality":"[6, 7, 8]"}}{"VSLite_parameters":{"T1":"3.81528649761","T2":"15.9949222219","M1":"0.0227210510353","M2":"0.548538926916"}} #-------------------- # Species # Species_Name: shortleaf pine # Species_Code: PIEC #-------------------- # 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 1816 1.144 1817 0.954 1818 0.731 1819 0.917 1820 0.285 1821 0.467 1822 0.62 1823 0.507 1824 0.748 1825 0.658 1826 0.58 1827 0.782 1828 0.682 1829 0.478 1830 0.738 1831 0.483 1832 0.412 1833 0.566 1834 0.615 1835 0.574 1836 0.729 1837 0.851 1838 0.377 1839 0.534 1840 0.821 1841 0.801 1842 0.704 1843 0.819 1844 1.397 1845 1.047 1846 0.873 1847 0.764 1848 0.758 1849 0.963 1850 1.248 1851 1.177 1852 1.218 1853 1.51 1854 1.517 1855 1.364 1856 0.454 1857 0.807 1858 1.292 1859 1.913 1860 1.216 1861 1.929 1862 1.567 1863 1.651 1864 0.859 1865 1.266 1866 0.868 1867 0.918 1868 1.098 1869 1.188 1870 0.922 1871 1.134 1872 1.049 1873 1.011 1874 0.843 1875 0.953 1876 1.32 1877 1.319 1878 1.443 1879 1.321 1880 1.488 1881 0.594 1882 1.119 1883 1.248 1884 1.022 1885 0.7 1886 0.659 1887 0.735 1888 0.8 1889 0.857 1890 0.686 1891 1.252 1892 1.349 1893 0.937 1894 0.699 1895 0.961 1896 0.825 1897 1.397 1898 1.363 1899 0.535 1900 0.754 1901 0.681 1902 0.952 1903 0.893 1904 1.458 1905 1.345 1906 1.062 1907 1.085 1908 1.275 1909 1.093 1910 1.258 1911 0.837 1912 0.636 1913 0.663 1914 0.553 1915 0.887 1916 0.98 1917 1.413 1918 1.127 1919 0.97 1920 1.313 1921 1.117 1922 1.465 1923 1.523 1924 1.649 1925 1.139 1926 1.196 1927 1.46 1928 1.461 1929 1.376 1930 0.596 1931 0.739 1932 0.942 1933 0.892 1934 0.794 1935 0.854 1936 0.573 1937 0.718 1938 1.028 1939 1.568 1940 0.945 1941 0.864 1942 1.163 1943 1.066 1944 1.185 1945 1.228 1946 1.31 1947 1.203 1948 1.081 1949 1.151 1950 1.133 1951 1.131 1952 0.825 1953 0.686 1954 0.686 1955 0.776 1956 0.99 1957 1.069 1958 1.064 1959 1.179 1960 0.704 1961 0.85 1962 0.686 1963 0.752 1964 0.541 1965 0.732 1966 0.947 1967 0.743 1968 0.809 1969 0.723 1970 1.081 1971 0.831 1972 0.927 1973 0.898 1974 0.957 1975 1.144 1976 0.989 1977 0.587 1978 0.304 1979 0.338 1980 0.434 1981 0.973