# 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/tuni001a-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/tuni001a.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,ARSTAN,N, ## numsamp number of samples,,,count,,tree ring,,,N, # #-------------------- # Data: # Missing_Values: -999 age_CE trsgi numsamp 1685 947 2 1686 1098 1 1687 1129 2 1688 1054 2 1689 1017 2 1690 1198 2 1691 962 2 1692 1298 2 1693 934 2 1694 645 2 1695 695 2 1696 813 2 1697 1011 2 1698 2032 2 1699 1068 2 1700 1099 2 1701 1613 2 1702 969 2 1703 1040 2 1704 822 2 1705 607 2 1706 895 2 1707 1441 2 1708 1685 2 1709 1198 2 1710 749 2 1711 1100 3 1712 1074 4 1713 728 4 1714 804 4 1715 817 4 1716 717 4 1717 771 4 1718 694 4 1719 660 4 1720 607 4 1721 1091 4 1722 627 4 1723 864 4 1724 755 4 1725 724 4 1726 1329 4 1727 1097 4 1728 1214 4 1729 1037 4 1730 1002 4 1731 1168 4 1732 1151 4 1733 722 4 1734 668 4 1735 881 4 1736 1313 4 1737 1533 4 1738 685 4 1739 662 4 1740 629 4 1741 625 4 1742 658 4 1743 869 4 1744 1137 4 1745 1283 4 1746 932 4 1747 849 4 1748 1143 4 1749 1388 4 1750 1114 4 1751 977 4 1752 777 4 1753 1613 4 1754 1379 4 1755 1350 4 1756 1100 4 1757 597 4 1758 1082 4 1759 830 4 1760 1003 4 1761 752 4 1762 1327 4 1763 1166 4 1764 968 4 1765 1263 4 1766 1221 4 1767 1053 4 1768 1058 4 1769 552 4 1770 567 4 1771 746 4 1772 923 4 1773 837 4 1774 1242 4 1775 977 4 1776 1233 4 1777 719 4 1778 957 4 1779 1139 4 1780 962 4 1781 1175 4 1782 896 4 1783 1469 4 1784 843 4 1785 899 4 1786 957 4 1787 657 4 1788 791 4 1789 967 4 1790 1157 4 1791 1369 4 1792 1348 4 1793 1271 4 1794 1178 4 1795 1129 4 1796 1064 6 1797 1209 6 1798 1125 6 1799 1199 6 1800 1288 6 1801 1198 6 1802 1054 6 1803 766 6 1804 836 6 1805 946 6 1806 759 6 1807 931 6 1808 779 8 1809 611 8 1810 1269 8 1811 1001 10 1812 1042 10 1813 1095 10 1814 918 10 1815 1403 10 1816 1358 10 1817 986 10 1818 1010 10 1819 850 10 1820 791 10 1821 1165 10 1822 1155 10 1823 903 12 1824 842 12 1825 574 12 1826 1134 12 1827 1565 12 1828 1115 12 1829 1042 12 1830 856 12 1831 833 12 1832 1050 12 1833 1452 12 1834 1231 12 1835 1066 12 1836 833 12 1837 849 12 1838 1439 12 1839 1050 12 1840 814 12 1841 885 12 1842 772 12 1843 916 12 1844 716 12 1845 751 12 1846 481 12 1847 375 12 1848 703 12 1849 785 12 1850 982 12 1851 1036 12 1852 838 14 1853 743 14 1854 1202 14 1855 1355 14 1856 744 14 1857 1124 14 1858 579 14 1859 638 15 1860 881 16 1861 954 16 1862 802 16 1863 967 16 1864 1134 16 1865 816 16 1866 690 16 1867 480 16 1868 924 16 1869 814 16 1870 888 16 1871 865 16 1872 1145 16 1873 1235 16 1874 675 16 1875 850 16 1876 892 16 1877 838 18 1878 757 18 1879 1002 18 1880 1161 18 1881 960 18 1882 801 18 1883 716 20 1884 1432 20 1885 1118 21 1886 1378 22 1887 922 24 1888 1190 24 1889 1125 24 1890 1182 24 1891 1337 24 1892 980 24 1893 837 24 1894 1239 24 1895 1267 24 1896 1080 24 1897 1167 24 1898 1097 24 1899 1155 27 1900 1315 28 1901 1048 28 1902 960 28 1903 910 28 1904 897 28 1905 1181 28 1906 1047 28 1907 949 28 1908 767 28 1909 1470 29 1910 1348 30 1911 1174 30 1912 803 30 1913 920 30 1914 884 30 1915 1158 30 1916 960 30 1917 1001 30 1918 1274 30 1919 1326 30 1920 1012 30 1921 1111 30 1922 898 30 1923 1084 30 1924 800 30 1925 866 30 1926 850 30 1927 914 30 1928 893 30 1929 968 30 1930 725 30 1931 771 30 1932 708 30 1933 560 30 1934 709 30 1935 649 30 1936 849 30 1937 892 30 1938 683 30 1939 834 30 1940 1121 30 1941 1258 30 1942 960 30 1943 987 30 1944 1222 30 1945 725 30 1946 488 30 1947 808 30 1948 782 30 1949 594 30 1950 812 30 1951 981 30 1952 1623 30 1953 1366 30 1954 1319 30 1955 1010 30 1956 1167 30 1957 1298 30 1958 1065 30 1959 1479 30 1960 1285 30 1961 729 30 1962 994 30 1963 1466 30 1964 877 30 1965 821 30 1966 1131 30 1967 910 30 1968 946 30 1969 840 30 1970 774 30 1971 584 30 1972 702 30 1973 546 30 1974 530 30 1975 1050 30 1976 1091 30 1977 911 30 1978 732 30 1979 870 30 1980 1076 30 1981 1017 30 1982 692 30 1983 833 30 1984 980 30 1985 964 30 1986 724 30 1987 839 30 1988 772 30 1989 716 30 1990 529 30 1991 978 30 1992 1546 30 1993 1110 30 1994 1214 30 1995 1153 30 1996 858 30 1997 925 30 1998 1559 30 1999 1363 30 2000 1567 30 2001 975 30 2002 609 30 2003 1334 30