# 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/tuni002r-crn-noaa.txt # Data_Download_Description: Raw Measurements - NOAA Template File; tuni002r-crn-noaa.txt # # Related_Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/treering/chronologies/africa/tuni002r.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 1893 0.855 1 1894 1.115 2 1895 1.121 2 1896 0.704 2 1897 0.955 4 1898 1.191 5 1899 1.16 6 1900 0.788 8 1901 0.992 9 1902 0.773 9 1903 1.219 9 1904 0.715 9 1905 1.075 9 1906 1.092 9 1907 0.906 11 1908 0.96 12 1909 1.214 13 1910 1.07 13 1911 0.837 14 1912 0.843 15 1913 1.013 15 1914 0.812 15 1915 1.143 15 1916 0.814 15 1917 0.974 15 1918 1.043 16 1919 1.226 16 1920 0.902 16 1921 1.273 16 1922 0.867 16 1923 1.041 16 1924 0.595 16 1925 1.047 16 1926 1.123 16 1927 0.681 16 1928 1.409 16 1929 1.391 16 1930 0.939 16 1931 1.022 16 1932 1.267 16 1933 0.904 16 1934 0.834 16 1935 1.018 16 1936 0.816 16 1937 0.975 16 1938 0.773 16 1939 1.455 16 1940 0.91 16 1941 0.958 16 1942 1.007 16 1943 0.963 16 1944 0.733 16 1945 0.368 16 1946 0.71 17 1947 0.567 17 1948 0.993 18 1949 0.931 18 1950 1.009 18 1951 0.626 18 1952 1.355 18 1953 1.225 19 1954 1.181 19 1955 1.236 19 1956 0.869 19 1957 1.057 19 1958 1.033 19 1959 1.601 19 1960 0.796 19 1961 0.509 19 1962 0.893 19 1963 1.117 19 1964 0.911 19 1965 0.86 19 1966 1.017 19 1967 0.468 19 1968 0.7 19 1969 0.651 19 1970 1.13 19 1971 0.681 19 1972 1.05 19 1973 1.062 19 1974 0.87 19 1975 1.188 19 1976 1.467 19 1977 0.899 19 1978 0.938 19 1979 1.182 19 1980 1.304 19 1981 1.038 19 1982 0.97 19 1983 1.059 19 1984 1.219 19 1985 1.095 19 1986 0.867 19 1987 1.132 19 1988 0.496 18 1989 0.68 18 1990 0.662 18 1991 1.468 18 1992 2.239 18 1993 0.524 18 1994 1.083 18 1995 0.742 18 1996 1.376 18 1997 0.541 18 1998 1.106 18 1999 0.804 17 2000 1.103 17 2001 0.759 17 2002 0.433 13 2003 1.194 1