# 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/alge003-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/alge003.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,standard,N, ## numsamp number of samples,,,count,,tree ring,,,N, # #-------------------- # Data: # Missing_Values: -999 age_CE trsgi numsamp 1854 244 1 1855 1234 2 1856 1130 4 1857 1274 6 1858 1564 9 1859 1433 11 1860 1290 15 1861 1214 17 1862 1278 17 1863 1400 18 1864 790 22 1865 1262 23 1866 1024 24 1867 544 25 1868 1149 25 1869 864 25 1870 741 27 1871 1077 27 1872 902 29 1873 975 29 1874 895 29 1875 1216 30 1876 1138 32 1877 640 32 1878 638 32 1879 465 33 1880 191 33 1881 298 33 1882 1278 33 1883 985 34 1884 1314 34 1885 1646 34 1886 1483 36 1887 1297 36 1888 1185 36 1889 1268 36 1890 1331 36 1891 1217 36 1892 795 36 1893 616 36 1894 498 36 1895 618 36 1896 520 36 1897 549 36 1898 558 36 1899 703 36 1900 1112 36 1901 1200 36 1902 1674 36 1903 1201 36 1904 1499 36 1905 954 36 1906 1408 36 1907 1148 36 1908 1398 36 1909 1128 36 1910 884 36 1911 958 36 1912 1480 36 1913 841 36 1914 570 36 1915 735 36 1916 583 36 1917 733 36 1918 864 36 1919 1475 36 1920 619 37 1921 781 38 1922 270 38 1923 1013 38 1924 770 38 1925 653 38 1926 582 38 1927 394 38 1928 744 38 1929 1314 38 1930 1108 38 1931 1103 38 1932 1127 38 1933 1197 38 1934 1488 38 1935 1044 38 1936 1127 38 1937 620 38 1938 418 38 1939 1021 38 1940 1279 38 1941 892 38 1942 679 38 1943 971 38 1944 798 38 1945 305 38 1946 844 38 1947 444 38 1948 800 38 1949 979 38 1950 848 38 1951 976 38 1952 1353 38 1953 555 38 1954 905 38 1955 1253 38 1956 843 38 1957 551 38 1958 1056 38 1959 1374 38 1960 1992 38 1961 1445 38 1962 1074 38 1963 1686 38 1964 1633 38 1965 1173 38 1966 1286 38 1967 638 38 1968 882 38 1969 535 38 1970 1639 38 1971 912 38 1972 1772 38 1973 1606 38 1974 1313 38 1975 1059 38 1976 1295 38 1977 1552 38 1978 716 38 1979 596 38 1980 975 38 1981 1634 37 1982 1061 37 1983 870 37 1984 183 37 1985 519 37 1986 522 37 1987 880 37 1988 638 37 1989 728 37 1990 1186 37 1991 896 37 1992 1671 37 1993 522 37 1994 316 37 1995 832 37 1996 1799 37 1997 1612 37 1998 1242 37 1999 805 37 2000 191 37 2001 0 37 2002 0 37 2003 336 37 2004 1267 37 2005 809 37 2006 1924 37