# Touchan - Ain Dhalia - QUCA - ITRDB TUNI001 #----------------------------------------------------------------------- # 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/9921 # Description: NOAA Landing Page of study # Online_Resource: https://www1.ncdc.noaa.gov//pub/data/paleo/treering/chronologies/africa/tuni001-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/tuni001.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 - Ain Dhalia - QUCA - ITRDB TUNI001 #------------------- # 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: Ain Dhalia # Location: Tunisia # Northernmost_Latitude: 36.4833 # Southernmost_Latitude: 36.4833 # Easternmost_Longitude: 8.3 # Westernmost_Longitude: 8.3 # Elevation: 700 #------------------- # Data_Collection # Collection_Name: TUNI001 # Earliest_Year: 1684 # Most_Recent_Year: 2003 # Time_Unit: AD # Notes: #------------------- # Species # Species_Name: Quercus canariensis Willd. # Common_Name: Mirbeck's oak # Tree_Species_Code: QUCA #------------------- # 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 1684 947 2 1685 728 2 1686 930 2 1687 1025 2 1688 997 2 1689 992 2 1690 1177 2 1691 951 2 1692 1306 2 1693 948 2 1694 683 2 1695 704 2 1696 755 2 1697 917 2 1698 1942 2 1699 1065 2 1700 1233 2 1701 1734 2 1702 1093 2 1703 1189 2 1704 917 2 1705 664 2 1706 897 2 1707 1384 2 1708 1647 2 1709 1269 2 1710 804 4 1711 1243 4 1712 1149 4 1713 767 4 1714 801 4 1715 783 4 1716 677 4 1717 779 4 1718 650 4 1719 594 4 1720 515 4 1721 913 4 1722 523 4 1723 752 4 1724 650 4 1725 620 4 1726 1216 4 1727 990 4 1728 1170 4 1729 1066 4 1730 1034 4 1731 1167 4 1732 1175 4 1733 760 4 1734 692 4 1735 817 4 1736 1246 4 1737 1573 4 1738 814 4 1739 692 4 1740 593 4 1741 411 4 1742 482 4 1743 696 4 1744 1002 4 1745 1312 4 1746 897 4 1747 806 4 1748 1079 4 1749 1335 4 1750 1192 4 1751 978 4 1752 736 4 1753 1480 4 1754 1365 4 1755 1444 4 1756 1171 4 1757 631 4 1758 1041 4 1759 823 4 1760 995 4 1761 894 4 1762 1357 4 1763 1267 4 1764 1057 4 1765 1210 4 1766 1178 4 1767 1137 4 1768 1065 4 1769 648 4 1770 528 4 1771 664 4 1772 833 4 1773 836 4 1774 1246 4 1775 1046 4 1776 1263 4 1777 776 4 1778 953 4 1779 1166 4 1780 999 4 1781 1210 4 1782 880 4 1783 1499 4 1784 902 4 1785 973 4 1786 904 4 1787 599 4 1788 682 4 1789 926 4 1790 1175 4 1791 1356 4 1792 1443 4 1793 1257 4 1794 1223 4 1795 1211 6 1796 1151 6 1797 1281 6 1798 1158 6 1799 1267 6 1800 1335 6 1801 1225 6 1802 1072 6 1803 686 6 1804 848 6 1805 955 6 1806 751 6 1807 865 8 1808 763 8 1809 601 8 1810 1212 10 1811 1004 10 1812 1026 10 1813 1136 10 1814 887 10 1815 1490 10 1816 1399 10 1817 990 10 1818 1040 10 1819 791 10 1820 782 10 1821 1128 12 1822 995 12 1823 847 12 1824 793 12 1825 481 12 1826 1070 12 1827 1603 12 1828 1120 12 1829 1061 12 1830 901 12 1831 879 12 1832 1076 12 1833 1478 12 1834 1252 12 1835 1091 12 1836 947 12 1837 917 12 1838 1469 12 1839 1060 12 1840 842 12 1841 886 12 1842 780 12 1843 899 12 1844 721 12 1845 761 12 1846 472 12 1847 351 12 1848 657 12 1849 734 12 1850 894 12 1851 952 14 1852 763 14 1853 723 14 1854 1187 14 1855 1352 14 1856 749 14 1857 1125 14 1858 629 16 1859 695 16 1860 897 16 1861 950 16 1862 746 16 1863 940 16 1864 1115 16 1865 772 16 1866 689 16 1867 457 16 1868 894 16 1869 815 16 1870 833 16 1871 776 16 1872 1085 16 1873 1180 16 1874 642 16 1875 897 16 1876 963 18 1877 852 18 1878 744 18 1879 990 18 1880 1157 18 1881 997 18 1882 849 20 1883 724 20 1884 1387 24 1885 1122 24 1886 1380 24 1887 939 24 1888 1247 24 1889 1135 24 1890 1205 24 1891 1376 24 1892 991 24 1893 830 24 1894 1260 24 1895 1241 24 1896 1112 24 1897 1207 24 1898 1113 28 1899 1166 28 1900 1339 28 1901 1055 28 1902 972 28 1903 927 28 1904 918 28 1905 1191 28 1906 1050 28 1907 915 30 1908 752 30 1909 1444 30 1910 1361 30 1911 1206 30 1912 833 30 1913 936 30 1914 876 30 1915 1157 30 1916 974 30 1917 987 30 1918 1276 30 1919 1326 30 1920 991 30 1921 1087 30 1922 874 30 1923 1057 30 1924 802 30 1925 848 30 1926 830 30 1927 928 30 1928 894 30 1929 974 30 1930 713 30 1931 741 30 1932 708 30 1933 583 30 1934 722 30 1935 670 30 1936 861 30 1937 891 30 1938 644 30 1939 831 30 1940 1130 30 1941 1225 30 1942 930 30 1943 952 30 1944 1161 30 1945 702 30 1946 483 30 1947 813 30 1948 767 30 1949 582 30 1950 815 30 1951 1026 30 1952 1655 30 1953 1365 30 1954 1245 30 1955 1006 30 1956 1188 30 1957 1303 30 1958 1063 30 1959 1494 30 1960 1297 30 1961 724 30 1962 989 30 1963 1477 30 1964 905 30 1965 818 30 1966 1132 30 1967 931 30 1968 927 30 1969 826 30 1970 749 30 1971 549 30 1972 679 30 1973 567 30 1974 521 30 1975 1037 30 1976 1081 30 1977 898 30 1978 714 30 1979 860 30 1980 1092 30 1981 1005 30 1982 681 30 1983 830 30 1984 973 30 1985 970 30 1986 721 30 1987 826 30 1988 760 30 1989 702 30 1990 512 30 1991 965 30 1992 1527 30 1993 1108 30 1994 1212 30 1995 1177 30 1996 899 30 1997 939 30 1998 1609 30 1999 1349 30 2000 1545 30 2001 1009 30 2002 599 30 2003 1356 30