# Touchan - Dahllia - PIHA - ITRDB TUNI002 #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite original publication, online resource and date accessed when using these data, # If there is no publication information, please cite investigator, title, online resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/9922 # Description: NOAA Landing Page of study # Online_Resource: https://www1.ncdc.noaa.gov//pub/data/paleo/treering/chronologies/africa/tuni002a-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/tuni002a.crn # Description: Chronology - Tucson Decadal File # # Archive: Tree Ring # # Dataset_DOI: # # Parameter_Keywords: ring width #------------------- # Contribution_Date # Date: 2010-10-20 #------------------- # File_Last_Modified_Date # Date: 2018-12-12 #------------------- # Title # Study_Name: Touchan - Dahllia - PIHA - ITRDB TUNI002 #------------------- # Investigators: Touchan, R. #------------------- # Description_Notes_and_Keywords # Description: NOAA Template Chronology file added 2018-12-12. #------------------- # Publication # Authors: Ramzi Touchan, Kevin J. Anchukaitis, David M. Meko, Said Attalah, Christopher Baisan, Ali Aloui # Journal_Name: Climate Dynamics # Published_Title: Spatiotemporal drought variability in northwestern Africa over the last nine centuries # Published_Date_or_Year: 2011 # Volume: 37 # Pages: 237-252 # Report_Number: # DOI: 10.1007/s00382-010-0804-4 # Full_Citation: # Abstract: Changes in precipitation patterns and the frequency and duration of drought are likely to be the feature of anthropogenic climate change that will have the most direct and most immediate consequences for human populations. The latest generation of state-of-the-art climate models project future widespread drying in the subtropics. Here, we reconstruct spatially-complete gridded Palmer drought severity index values back to A.D. 1179 over Morocco, Algeria, and Tunisia. The reconstructions provide long-term context for northwest African hydroclimatology, revealing large-scale regional droughts prior to the sixteenth century, as well as more heterogeneous patterns in sixteenth, eighteenth, and twentieth century. Over the most recent decades a shift toward dry conditions over the region is observed, which is consistent with general circulation model projections of greenhouse gas forced enhanced regional subtropical drought. #------------------- # Site_Information # Site_Name: Dahllia # Location: Tunisia # Northernmost_Latitude: 36.2333 # Southernmost_Latitude: 36.2333 # Easternmost_Longitude: 8.4333 # Westernmost_Longitude: 8.4333 # Elevation: 950 #------------------- # Data_Collection # Collection_Name: TUNI002 # Earliest_Year: 1890 # Most_Recent_Year: 2003 # Time_Unit: AD # Notes: #------------------- # Species # Species_Name: Pinus halepensis Mill. # Common_Name: Aleppo pine # Tree_Species_Code: PIHA #------------------- # Chronology_Information # Chronology: #--------------------- # Variables # variables format: shortname var components: what,material,error,units,season,archive,detail,method, C or N for Char or Numeric data,additional information ## age_CE age,,,year Common Era,,tree ring,,,N, ## trsgi tree ring standardized growth index,,,,,tree ring,composited,ARSTAN,N, ## numsamp number of samples,,,count,,tree ring,,,N, # #-------------------- # Data: # Missing_Values: -999 age_CE trsgi numsamp 1891 876 1 1892 992 2 1893 887 1 1894 1086 2 1895 1177 2 1896 730 2 1897 829 4 1898 1219 5 1899 1269 6 1900 802 8 1901 860 9 1902 789 9 1903 1199 9 1904 830 9 1905 972 9 1906 1132 9 1907 951 11 1908 909 12 1909 1203 13 1910 1153 13 1911 823 14 1912 750 15 1913 993 15 1914 881 15 1915 1111 15 1916 878 15 1917 909 15 1918 1052 16 1919 1266 16 1920 962 16 1921 1188 16 1922 931 16 1923 968 16 1924 605 16 1925 945 16 1926 1218 16 1927 758 16 1928 1280 16 1929 1538 16 1930 1012 16 1931 874 16 1932 1228 16 1933 1003 16 1934 771 16 1935 952 16 1936 867 16 1937 951 16 1938 796 16 1939 1412 16 1940 1083 16 1941 865 16 1942 945 16 1943 986 16 1944 744 16 1945 300 16 1946 584 17 1947 647 17 1948 1010 18 1949 1033 18 1950 1016 18 1951 621 18 1952 1243 18 1953 1401 19 1954 1226 19 1955 1186 19 1956 858 19 1957 964 19 1958 1063 19 1959 1628 19 1960 955 19 1961 320 19 1962 714 19 1963 1228 19 1964 1056 19 1965 811 19 1966 949 19 1967 507 19 1968 576 19 1969 671 19 1970 1156 19 1971 818 19 1972 954 19 1973 1101 19 1974 911 19 1975 1135 19 1976 1530 19 1977 1010 19 1978 792 19 1979 1121 19 1980 1396 19 1981 1116 19 1982 891 19 1983 995 19 1984 1249 19 1985 1167 19 1986 844 19 1987 1041 19 1988 551 18 1989 542 18 1990 659 18 1991 1501 18 1992 2476 18 1993 799 18 1994 611 18 1995 689 18 1996 1398 18 1997 740 18 1998 921 18 1999 854 17 2000 1084 17 2001 823 17 2002 359 13 2003 1063 1