# Touchan - Tadlounte Recollection - CDAT - ITRDB MORC017 #----------------------------------------------------------------------- # 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/9722 # Description: NOAA Landing Page of study # Online_Resource: https://www1.ncdc.noaa.gov//pub/data/paleo/treering/chronologies/africa/morc017r-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/morc017r.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 - Tadlounte Recollection - CDAT - ITRDB MORC017 #------------------- # Investigators: Touchan, R. #------------------- # Description_Notes_and_Keywords # Description: Recollection of 1984 Stockton et al. Ta'Adlount, ITRDB morc003 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: Ta'Adlount # Location: Morocco # Northernmost_Latitude: 32.38 # Southernmost_Latitude: 32.38 # Easternmost_Longitude: -5.6 # Westernmost_Longitude: -5.6 # Elevation: 2200 #------------------- # Data_Collection # Collection_Name: MORC017 # Earliest_Year: 1696 # Most_Recent_Year: 2004 # Time_Unit: AD # Notes: #------------------- # Species # Species_Name: Cedrus atlantica (Endl.) Manetti ex Carriere # Common_Name: Atlantic cedar # Tree_Species_Code: CDAT #------------------- # 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,residual,N, ## numsamp number of samples,,,count,,tree ring,,,N, # #-------------------- # Data: # Missing_Values: -999 age_CE trsgi numsamp 1698 1001 1 1699 944 2 1700 1171 2 1701 634 2 1702 1064 2 1703 972 2 1704 1217 2 1705 1143 2 1706 1110 2 1707 1104 2 1708 1033 2 1709 811 2 1710 1056 2 1711 932 2 1712 1044 2 1713 822 2 1714 840 2 1715 1154 2 1716 951 3 1717 928 3 1718 1092 4 1719 914 4 1720 914 4 1721 982 4 1722 915 4 1723 1072 4 1724 1141 4 1725 861 4 1726 900 4 1727 1176 4 1728 973 5 1729 929 7 1730 1184 8 1731 1281 8 1732 829 8 1733 765 8 1734 480 8 1735 1159 8 1736 1108 8 1737 976 8 1738 538 8 1739 992 8 1740 1256 8 1741 987 8 1742 1011 8 1743 1155 8 1744 882 8 1745 1025 8 1746 1116 8 1747 985 8 1748 881 9 1749 907 9 1750 964 10 1751 1243 10 1752 1171 10 1753 676 11 1754 955 11 1755 1006 11 1756 1038 11 1757 1205 11 1758 1123 11 1759 794 11 1760 1056 12 1761 1069 12 1762 1308 12 1763 1269 12 1764 1093 12 1765 581 14 1766 1028 15 1767 1058 15 1768 1017 15 1769 1232 15 1770 1068 15 1771 1068 15 1772 1164 15 1773 981 16 1774 1057 16 1775 914 18 1776 1129 20 1777 1003 20 1778 1099 20 1779 421 20 1780 867 20 1781 907 20 1782 1187 21 1783 1112 21 1784 1195 21 1785 1132 21 1786 1267 22 1787 1038 23 1788 1102 23 1789 839 24 1790 861 24 1791 829 24 1792 1054 24 1793 998 25 1794 806 25 1795 885 25 1796 895 25 1797 1002 25 1798 789 25 1799 1001 25 1800 692 27 1801 706 28 1802 887 28 1803 1160 28 1804 1105 28 1805 1026 28 1806 850 28 1807 946 28 1808 1245 28 1809 1047 28 1810 1138 29 1811 1037 29 1812 915 29 1813 976 29 1814 1390 29 1815 1328 30 1816 930 30 1817 493 30 1818 966 30 1819 1009 30 1820 733 30 1821 866 30 1822 807 30 1823 1041 30 1824 501 30 1825 512 30 1826 1294 30 1827 1404 30 1828 570 30 1829 1241 30 1830 1009 30 1831 864 31 1832 1230 31 1833 1229 31 1834 483 31 1835 1408 32 1836 932 32 1837 1515 32 1838 964 33 1839 621 33 1840 1156 33 1841 860 33 1842 1073 33 1843 884 34 1844 985 34 1845 1194 34 1846 1152 34 1847 1008 34 1848 1193 34 1849 949 34 1850 538 34 1851 1455 34 1852 1008 34 1853 1278 34 1854 1017 34 1855 1287 34 1856 1167 34 1857 920 34 1858 797 34 1859 689 34 1860 1231 34 1861 734 34 1862 998 34 1863 1097 34 1864 1105 34 1865 1121 35 1866 966 35 1867 439 36 1868 822 36 1869 1015 36 1870 1231 36 1871 1244 36 1872 1187 36 1873 1150 36 1874 -24 36 1875 1436 36 1876 1178 36 1877 675 35 1878 239 35 1879 952 34 1880 1026 34 1881 622 35 1882 383 35 1883 870 35 1884 869 35 1885 1103 35 1886 1051 35 1887 581 35 1888 1352 35 1889 1377 35 1890 1125 35 1891 1090 35 1892 622 35 1893 1054 35 1894 1078 35 1895 1184 35 1896 976 35 1897 664 35 1898 1036 35 1899 1211 35 1900 1246 35 1901 1445 35 1902 1247 35 1903 943 35 1904 1026 35 1905 248 35 1906 1537 35 1907 1056 35 1908 1067 35 1909 973 35 1910 943 35 1911 960 34 1912 1302 34 1913 1023 34 1914 1190 34 1915 1010 35 1916 934 35 1917 1113 35 1918 1194 35 1919 919 35 1920 854 35 1921 1203 35 1922 1265 35 1923 988 36 1924 1122 36 1925 861 36 1926 693 36 1927 1103 36 1928 1102 36 1929 1103 36 1930 1263 36 1931 579 36 1932 979 36 1933 889 36 1934 1032 36 1935 904 36 1936 1196 36 1937 442 36 1938 1051 36 1939 1233 36 1940 1130 36 1941 1222 36 1942 1168 36 1943 1013 36 1944 1037 36 1945 -10 36 1946 1200 36 1947 1089 36 1948 831 36 1949 996 35 1950 716 35 1951 1108 35 1952 632 35 1953 1012 35 1954 1198 35 1955 1160 35 1956 1121 35 1957 699 35 1958 1294 35 1959 985 35 1960 1418 35 1961 1131 35 1962 1134 35 1963 1397 35 1964 1067 35 1965 883 35 1966 151 35 1967 1288 35 1968 961 35 1969 1327 35 1970 970 35 1971 1046 35 1972 1193 35 1973 1219 35 1974 1080 35 1975 1134 35 1976 1049 35 1977 756 35 1978 1401 34 1979 1030 34 1980 890 34 1981 476 29 1982 754 28 1983 477 27 1984 847 26 1985 811 26 1986 798 26 1987 724 26 1988 1010 26 1989 880 26 1990 717 26 1991 1058 26 1992 1224 26 1993 879 26 1994 977 25 1995 284 24 1996 1979 24 1997 1371 24 1998 266 24 1999 999 24 2000 447 23 2001 1383 23 2002 1177 23 2003 1149 21 2004 1447 21