# 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/tuni002-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/tuni002.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,standard,N, ## numsamp number of samples,,,count,,tree ring,,,N, # #-------------------- # Data: # Missing_Values: -999 age_CE trsgi numsamp 1890 765 1 1891 610 1 1892 876 1 1893 992 2 1894 1085 2 1895 1205 3 1896 714 5 1897 947 6 1898 1393 7 1899 1281 8 1900 839 9 1901 917 9 1902 818 9 1903 1139 9 1904 808 9 1905 968 10 1906 1187 13 1907 988 13 1908 905 13 1909 1212 13 1910 1168 15 1911 835 15 1912 770 15 1913 1001 15 1914 849 15 1915 1065 15 1916 882 16 1917 887 16 1918 1027 16 1919 1283 16 1920 922 16 1921 1234 16 1922 952 16 1923 975 16 1924 602 16 1925 924 16 1926 1197 16 1927 691 16 1928 1282 16 1929 1562 16 1930 988 16 1931 887 16 1932 1293 16 1933 957 16 1934 727 16 1935 993 16 1936 860 16 1937 945 16 1938 788 16 1939 1410 16 1940 1081 16 1941 867 16 1942 972 16 1943 984 16 1944 719 16 1945 269 17 1946 555 17 1947 579 18 1948 917 18 1949 938 18 1950 960 18 1951 567 19 1952 1193 19 1953 1384 19 1954 1211 19 1955 1184 19 1956 900 19 1957 980 19 1958 1055 19 1959 1575 19 1960 894 19 1961 335 19 1962 787 19 1963 1203 19 1964 968 19 1965 755 19 1966 995 19 1967 491 19 1968 575 19 1969 681 19 1970 1116 19 1971 774 19 1972 973 19 1973 1167 19 1974 944 19 1975 1123 19 1976 1552 19 1977 1065 19 1978 812 19 1979 1222 19 1980 1391 19 1981 1007 19 1982 884 19 1983 1003 19 1984 1258 19 1985 1088 19 1986 786 19 1987 1047 19 1988 580 18 1989 528 18 1990 655 18 1991 1456 18 1992 2463 18 1993 706 18 1994 608 18 1995 824 18 1996 1356 18 1997 656 18 1998 908 18 1999 923 17 2000 1066 17 2001 789 17 2002 245 13 2003 1105 1