# Touchan - Tobji - PIHA - ITRDB ALGE003 #----------------------------------------------------------------------- # 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/9920 # Description: NOAA Landing Page of study # Online_Resource: https://www1.ncdc.noaa.gov//pub/data/paleo/treering/chronologies/africa/alge003a-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/alge003a.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 - Tobji - PIHA - ITRDB ALGE003 #------------------- # 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: Tobji # Location: Algeria # Northernmost_Latitude: 34.6 # Southernmost_Latitude: 34.6 # Easternmost_Longitude: 3.1167 # Westernmost_Longitude: 3.1167 # Elevation: 1380 #------------------- # Data_Collection # Collection_Name: ALGE003 # Earliest_Year: 1854 # Most_Recent_Year: 2006 # 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 1854 244 1 1855 943 1 1856 1225 2 1857 1159 4 1858 1424 5 1859 1348 7 1860 1178 9 1861 1172 13 1862 1217 17 1863 1347 17 1864 733 18 1865 1251 21 1866 1013 23 1867 536 24 1868 1182 25 1869 877 25 1870 749 25 1871 1123 27 1872 937 27 1873 982 29 1874 910 29 1875 1221 29 1876 1120 30 1877 620 32 1878 644 32 1879 495 32 1880 240 33 1881 365 33 1882 1353 33 1883 1020 33 1884 1325 34 1885 1656 34 1886 1455 34 1887 1269 36 1888 1167 36 1889 1258 36 1890 1325 36 1891 1172 36 1892 762 36 1893 609 36 1894 533 36 1895 661 36 1896 572 36 1897 600 36 1898 612 36 1899 754 36 1900 1165 36 1901 1236 36 1902 1685 36 1903 1166 36 1904 1444 36 1905 915 36 1906 1383 36 1907 1124 36 1908 1381 36 1909 1100 36 1910 866 36 1911 965 36 1912 1473 36 1913 817 36 1914 534 36 1915 753 36 1916 610 36 1917 771 36 1918 913 36 1919 1502 36 1920 629 36 1921 780 37 1922 287 37 1923 1058 38 1924 804 38 1925 687 38 1926 628 38 1927 427 38 1928 799 38 1929 1323 38 1930 1113 38 1931 1122 38 1932 1177 38 1933 1197 38 1934 1476 38 1935 1033 38 1936 1131 38 1937 628 38 1938 435 38 1939 1067 38 1940 1316 38 1941 906 38 1942 689 38 1943 996 38 1944 829 38 1945 345 38 1946 930 38 1947 491 38 1948 845 38 1949 1037 38 1950 870 38 1951 1002 38 1952 1368 38 1953 560 38 1954 929 38 1955 1287 38 1956 866 38 1957 576 38 1958 1094 38 1959 1390 38 1960 1998 38 1961 1359 38 1962 1015 38 1963 1653 38 1964 1590 38 1965 1152 38 1966 1249 38 1967 613 38 1968 880 38 1969 556 38 1970 1657 38 1971 909 38 1972 1758 38 1973 1605 38 1974 1260 38 1975 1006 38 1976 1262 38 1977 1536 38 1978 723 38 1979 621 38 1980 1015 38 1981 1651 37 1982 1041 37 1983 873 37 1984 205 37 1985 564 37 1986 572 37 1987 921 37 1988 680 37 1989 764 37 1990 1224 37 1991 912 37 1992 1681 37 1993 480 37 1994 338 37 1995 860 37 1996 1833 37 1997 1564 37 1998 1194 37 1999 749 37 2000 216 37 2001 132 37 2002 66 37 2003 405 37 2004 1315 37 2005 817 37 2006 1921 37