# Luckman and Wilson 2005 Canadian Rockies Summer Temperature Reconstruction #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 4.0 # Encoding: UTF-8 # NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), # and date accessed when using these downloaded data. If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/6395 # Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata. # # Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-recon-6395.json # Study_Level_JSON_Description: JSON metadata of this file's parent study, which includes all study metadata. # # Data_Type: Climate Reconstructions # # Dataset_DOI: # # Science_Keywords: Air Temperature Reconstruction #------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/treering/reconstructions/canada/icefields-summer-maxt-noaa.txt # Data_Download_Description: NOAA Template File; Maximum Temperature Data # # Original_Source_URL: # Original_Source_Description: # #------------------- # Contribution_Date # Date: 2006-02-01 #------------------- # File_Last_Modified_Date # Date: 2022-03-30 #------------------- # Title # Study_Name: Luckman and Wilson 2005 Canadian Rockies Summer Temperature Reconstruction #------------------- # Investigators # Investigators: Luckman, B.H.; Wilson, R.J.S. #------------------- # Description_Notes_and_Keywords # Description: Canadian Rockies Summer (May-August) Maximum Temperature Reconstruction. The location of the reconstruction is the Canadian Rockies, Alberta. Latitude = 52.15N longitude = 117.15W period of record = 950AD - 1994 Reconstruction variable = May-August maximum temperatures Chronologies These are the maximum density and ring-width chronologies used for the reconstruction. N = TR series replication RCS = chronology developed using the regional curve standardisation method STD = chronology developed using standard methods - e.g. negative exponential and negative/zero slope regression functions. #------------------- # Publication # Authors: Luckman, B.H. and R.J.S. Wilson # Journal_Name: Climate Dynamics # Published_Title: Summer temperatures in the Canadian Rockies during the last millennium: a revised record. # Published_Date_or_Year: 2005-01-21 # Volume: 24 # Issue: # Pages: 131-144 # Report_Number: # DOI: 10.1007/s00382-004-0511-0 # Full_Citation: # Abstract: We present a significant update to a millennial summer temperature reconstruction (1073–1983) that was originally published in 1997. Utilising new tree-ring data (predominantly Picea engelmannii), the reconstruction is not only better replicated, but has been extended (950–1994) and is now more regionally representative. Calibration and verification statistics were improved, with the new model explaining 53% of May–August maximum temperature variation compared to the original (39% of April–August mean temperatures). The maximum latewood density data, which are weighted more strongly in the regression model than ringwidth, were processed using regional curve standardisation to capture potential centennial to millennial scale variability. The reconstruction shows warm intervals, comparable to twentieth century values, for the first half of the eleventh century, the late 1300s and early 1400s. The bulk of the record, however, is below the 1901–1980 normals, with prolonged cool periods from 1200 to 1350 and from 1450 to the late 19th century. The most extreme cool period is observed to be in the 1690s. These reconstructed cool periods compare well with known regional records of glacier advances between 1150 and the 1300s, possibly in the early 1500s, early 1700s and 1800s. Evidence is also presented of the influence of solar activity and volcanic events on summer temperature in the Canadian Rockies over the last 1,000 years. Although this reconstruction is regional in scope, it compares well at multi-decadal to centennial scales with Northern Hemisphere temperature proxies and at millennial scales with reconstructions that were also processed to capture longer timescale variability. This coherence suggests that this series is globally important for the assessment of natural temperature variability over the last 1,000 years. #------------------- # Funding_Agency # Funding_Agency_Name: Canadian Foundation for Climate and Atmospheric Sciences, Parks Canada # Grant_Number: #------------------- # Funding_Agency # Funding_Agency_Name: Inter-American Institute for Global Change Research # Grant_Number: #------------------- # Site_Information # Site_Name: Columbia Icefield - Alberta # Location: Alberta # Northernmost_Latitude: 53.09 # Southernmost_Latitude: 51.42 # Easternmost_Longitude: -116.3 # Westernmost_Longitude: -119.07 # Elevation_m: #------------------- # Data_Collection # Collection_Name: temp_luckman2005 # First_Year: 950 # Last_Year: 1994 # Time_Unit: CE # Core_Length_m: # Parameter_Keywords: reconstructions # Notes: #------------------- # Chronology_Information # Chronology: #------------------- # Variables # # PaST_Thesaurus_Download_Resource: https://www.ncdc.noaa.gov/paleo/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Variables format: shortname what,material,error,units,seasonality,data_type,detail,method, C(har) or N(umeric) data,additional information ## age age,,,year Common Era,,climate reconstructions;tree ring,,,N, ## maxtr maximum temperature,,,degree Celsius,May-Aug,climate reconstructions;tree ring,,,N, ## maxti temperature,,,degree Celsius,May-Aug,instrumental,,,N,maximum temperature #------------------------------- # Data: # Missing_Values: NA age maxtr maxti 950 -0.7 NA 951 -1.11 NA 952 -1.26 NA 953 -0.57 NA 954 -0.58 NA 955 -1.33 NA 956 -0.32 NA 957 -0.71 NA 958 0.09 NA 959 -1.13 NA 960 -0.42 NA 961 -0.33 NA 962 -0.54 NA 963 0.04 NA 964 -0.32 NA 965 -0.51 NA 966 -0.59 NA 967 -0.67 NA 968 -0.13 NA 969 0.09 NA 970 0.04 NA 971 0.31 NA 972 -0.04 NA 973 -0.34 NA 974 -0.17 NA 975 -0.4 NA 976 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1781 -0.92 NA 1782 -1.48 NA 1783 -1.02 NA 1784 -1.55 NA 1785 -1.91 NA 1786 -0.91 NA 1787 -1.71 NA 1788 -0.91 NA 1789 -0.85 NA 1790 -0.32 NA 1791 -0.39 NA 1792 0.41 NA 1793 -0.68 NA 1794 -0.04 NA 1795 -1.53 NA 1796 0.59 NA 1797 -1.5 NA 1798 0.48 NA 1799 -1.14 NA 1800 -0.2 NA 1801 -2.03 NA 1802 -0.6 NA 1803 0.1 NA 1804 -0.81 NA 1805 0.61 NA 1806 -1.88 NA 1807 -0.64 NA 1808 0.43 NA 1809 -0.68 NA 1810 -1.65 NA 1811 -1.69 NA 1812 -0.31 NA 1813 -2.36 NA 1814 -0.79 NA 1815 -1.37 NA 1816 -0.61 NA 1817 0.22 NA 1818 -2.24 NA 1819 -1.45 NA 1820 -0.47 NA 1821 -1.32 NA 1822 -0.93 NA 1823 -0.46 NA 1824 -1.68 NA 1825 -0.91 NA 1826 -1.17 NA 1827 -1.92 NA 1828 -0.17 NA 1829 -0.42 NA 1830 -0.79 NA 1831 -0.49 NA 1832 -1.43 NA 1833 -2.35 NA 1834 -0.43 NA 1835 -1.11 NA 1836 -1.22 NA 1837 -1.74 NA 1838 -2.39 NA 1839 0.71 NA 1840 -0.47 NA 1841 -0.44 NA 1842 -0.01 NA 1843 0.34 NA 1844 -1.81 NA 1845 0.21 NA 1846 -0.35 NA 1847 -0.1 NA 1848 -1.34 NA 1849 -1.65 NA 1850 0.01 NA 1851 -0.56 NA 1852 0.68 NA 1853 -0.49 NA 1854 -0.78 NA 1855 -0.94 NA 1856 -1.25 NA 1857 -0.01 NA 1858 -0.59 NA 1859 0.33 NA 1860 -0.82 NA 1861 -1.23 NA 1862 -0.43 NA 1863 -0.36 NA 1864 0.09 NA 1865 -0.26 NA 1866 0.16 NA 1867 -0.57 NA 1868 -0.12 NA 1869 -0.02 NA 1870 -0.97 NA 1871 -0.86 NA 1872 -1.32 NA 1873 -0.69 NA 1874 -0.61 NA 1875 -0.42 NA 1876 -2.26 NA 1877 -0.88 NA 1878 -0.1 NA 1879 -0.49 NA 1880 -1.43 NA 1881 -1.47 NA 1882 -0.04 NA 1883 -0.33 NA 1884 -0.39 NA 1885 -0.7 NA 1886 0.63 NA 1887 -1.03 NA 1888 0.28 NA 1889 -0.35 NA 1890 0.06 NA 1891 0.4 NA 1892 -0.72 NA 1893 -0.54 NA 1894 0.65 NA 1895 -1.16 -0.84 1896 -0.13 -0.42 1897 -0.18 0.39 1898 0.71 1.10 1899 -2.35 -2.47 1900 -0.42 -0.92 1901 0.3 -0.39 1902 -0.86 -1.83 1903 -0.29 -0.90 1904 0.4 -0.14 1905 -0.09 -0.43 1906 0.48 0.20 1907 -1.6 -2.31 1908 0.27 -0.36 1909 -0.42 -0.68 1910 -0.44 -0.54 1911 -1.02 -1.43 1912 -0.32 -0.55 1913 -0.47 -0.73 1914 0.25 0.32 1915 -0.54 -0.23 1916 -0.31 -1.46 1917 -0.2 0.13 1918 -0.2 -0.12 1919 0.17 0.49 1920 0.01 0.31 1921 -0.45 -0.18 1922 0.08 0.94 1923 -0.08 -0.19 1924 -0.41 0.23 1925 1.15 0.92 1926 -0.09 0.19 1927 -0.09 -0.50 1928 0.22 0.59 1929 -0.27 0.14 1930 0.13 -0.06 1931 -0.11 0.21 1932 0.1 -0.39 1933 0.34 -0.15 1934 -0.31 0.70 1935 -0.44 -1.26 1936 1.37 1.79 1937 -0.96 0.03 1938 0.23 1.12 1939 0.01 0.67 1940 0.34 1.36 1941 0.53 0.88 1942 -0.06 -0.40 1943 -0.48 -0.39 1944 -0.42 0.88 1945 0.65 0.06 1946 0.08 0.98 1947 -0.27 -0.38 1948 0.65 0.30 1949 -0.03 0.36 1950 0.95 0.42 1951 -0.38 -0.60 1952 0.23 -0.28 1953 -0.3 -1.25 1954 -0.86 -1.72 1955 0.65 -0.28 1956 0.88 1.32 1957 -0.85 -0.27 1958 0.93 2.69 1959 -1.35 -1.20 1960 0.35 -0.16 1961 0.34 2.49 1962 -1.3 -1.15 1963 -0.05 0.11 1964 -0.87 -0.90 1965 0.56 0.22 1966 -1.26 -0.94 1967 1.38 1.33 1968 -1.1 -1.00 1969 0.24 0.47 1970 1.09 1.79 1971 0.1 1.05 1972 -0.01 0.32 1973 0.16 0.35 1974 -0.55 -0.91 1975 -0.35 -0.97 1976 -1.38 -1.19 1977 0.2 -0.84 1978 0.15 -0.33 1979 0.4 0.48 1980 -0.79 -0.60 1981 -0.38 -0.39 1982 0.07 -0.91 1983 0.7 0.37 1984 0.78 -0.29 1985 0.35 0.83 1986 0.34 0.02 1987 0.48 0.29 1988 0.71 0.51 1989 0.44 -0.19 1990 0.51 -0.02 1991 -0.36 -0.52 1992 -0.38 -0.01 1993 -1.17 -0.50 1994 0.52 0.74 1995 NA -0.29 1996 NA -0.58 1997 NA 0.12 1998 NA 2.59