# Touchan - Dahllia - PIHA - ITRDB TUNI002 #---------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #---------------------------------------------------- # 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 downloaded data. If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/9922 # 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-tree-9922.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Tree Ring # # Dataset_DOI: # # Science_Keywords: drought #-------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/treering/measurements/africa/tuni002a-crn-noaa.txt # Data_Download_Description: Raw Measurements - NOAA Template File; tuni002a-crn-noaa.txt # # Related_Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/treering/chronologies/africa/tuni002a.crn # Related_Online_Description: CRN File; Chronology - Tucson Decadal File # #-------------------- # Contribution_Date # Date: 2010-10-20 #-------------------- # File_Last_Modified_Date # Date: 2010-10-20 #-------------------- # Title # Study_Name: Touchan - Dahllia - PIHA - ITRDB TUNI002 #-------------------- # Investigators # Investigators: Touchan, R. #-------------------- # Description_Notes_and_Keywords # Description: NOAA Template Chronology file added 2018-12-13. NOAA Template Raw Measurements file added 2019-05-01. #-------------------- # 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 # Issue: 1 # Report_Number: # DOI: 10.1007/s00382-010-0804-4 # Full_Citation: None # 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. #-------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: ESH0317288 #-------------------- # Site_Information # Site_Name: Dahllia # Location: Tunisia # Northernmost_Latitude: 36.2333 # Southernmost_Latitude: 36.2333 # Easternmost_Longitude: 8.4333 # Westernmost_Longitude: 8.4333 # Elevation_m: 950 #-------------------- # Data_Collection # Collection_Name: TUNI002 # First_Year: 1890 # Last_Year: 2003 # Time_Unit: CE # Core_Length_m: # Parameter_Keywords: ring width # Notes: #-------------------- # Species # Species_Name: Pinus halepensis Mill. # Common_Name: Aleppo pine # Tree_Species_Code: PIHA #-------------------- # Variables # # PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Data variables follow that are preceded by '##' in columns one and two. # Variables format: shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data) # ## age_CE age,,,year Common Era,,tree ring,,,N, ## trsgi tree ring standardized growth index,,,,,tree ring,composited,standard chronology method,N, ## numsamp number of samples,,,count,,tree ring,,,N, #--------------------- # Data: # Missing_Values: NA age_CE trsgi numsamp 1891 0.876 1 1892 0.992 2 1893 0.887 1 1894 1.086 2 1895 1.177 2 1896 0.73 2 1897 0.829 4 1898 1.219 5 1899 1.269 6 1900 0.802 8 1901 0.86 9 1902 0.789 9 1903 1.199 9 1904 0.83 9 1905 0.972 9 1906 1.132 9 1907 0.951 11 1908 0.909 12 1909 1.203 13 1910 1.153 13 1911 0.823 14 1912 0.75 15 1913 0.993 15 1914 0.881 15 1915 1.111 15 1916 0.878 15 1917 0.909 15 1918 1.052 16 1919 1.266 16 1920 0.962 16 1921 1.188 16 1922 0.931 16 1923 0.968 16 1924 0.605 16 1925 0.945 16 1926 1.218 16 1927 0.758 16 1928 1.28 16 1929 1.538 16 1930 1.012 16 1931 0.874 16 1932 1.228 16 1933 1.003 16 1934 0.771 16 1935 0.952 16 1936 0.867 16 1937 0.951 16 1938 0.796 16 1939 1.412 16 1940 1.083 16 1941 0.865 16 1942 0.945 16 1943 0.986 16 1944 0.744 16 1945 0.3 16 1946 0.584 17 1947 0.647 17 1948 1.01 18 1949 1.033 18 1950 1.016 18 1951 0.621 18 1952 1.243 18 1953 1.401 19 1954 1.226 19 1955 1.186 19 1956 0.858 19 1957 0.964 19 1958 1.063 19 1959 1.628 19 1960 0.955 19 1961 0.32 19 1962 0.714 19 1963 1.228 19 1964 1.056 19 1965 0.811 19 1966 0.949 19 1967 0.507 19 1968 0.576 19 1969 0.671 19 1970 1.156 19 1971 0.818 19 1972 0.954 19 1973 1.101 19 1974 0.911 19 1975 1.135 19 1976 1.53 19 1977 1.01 19 1978 0.792 19 1979 1.121 19 1980 1.396 19 1981 1.116 19 1982 0.891 19 1983 0.995 19 1984 1.249 19 1985 1.167 19 1986 0.844 19 1987 1.041 19 1988 0.551 18 1989 0.542 18 1990 0.659 18 1991 1.501 18 1992 2.476 18 1993 0.799 18 1994 0.611 18 1995 0.689 18 1996 1.398 18 1997 0.74 18 1998 0.921 18 1999 0.854 17 2000 1.084 17 2001 0.823 17 2002 0.359 13 2003 1.063 1