# 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/morc017-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/morc017.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,standard,N, ## numsamp number of samples,,,count,,tree ring,,,N, # #-------------------- # Data: # Missing_Values: -999 age_CE trsgi numsamp 1696 801 1 1697 1160 2 1698 1122 2 1699 1016 2 1700 1198 2 1701 696 2 1702 1002 2 1703 895 2 1704 1179 2 1705 1178 2 1706 1218 2 1707 1225 2 1708 1168 2 1709 927 2 1710 1078 2 1711 943 2 1712 1049 2 1713 819 2 1714 801 3 1715 1154 3 1716 1067 4 1717 1112 4 1718 1162 4 1719 968 4 1720 944 4 1721 967 4 1722 894 4 1723 1038 4 1724 1169 4 1725 925 4 1726 958 5 1727 1086 7 1728 925 8 1729 943 8 1730 1146 8 1731 1327 8 1732 998 8 1733 843 8 1734 366 8 1735 887 8 1736 929 8 1737 902 8 1738 519 8 1739 755 8 1740 1092 8 1741 980 8 1742 1009 8 1743 1149 8 1744 946 8 1745 1035 8 1746 1078 9 1747 981 9 1748 907 10 1749 824 10 1750 865 10 1751 1208 11 1752 1173 11 1753 815 11 1754 910 11 1755 920 11 1756 993 11 1757 1164 11 1758 1208 12 1759 936 12 1760 1102 12 1761 1117 12 1762 1365 12 1763 1407 14 1764 1333 15 1765 795 15 1766 1022 15 1767 1013 15 1768 1052 15 1769 1243 15 1770 1191 15 1771 1217 15 1772 1287 16 1773 1158 17 1774 1181 19 1775 992 20 1776 1160 20 1777 1085 20 1778 1135 20 1779 526 20 1780 674 21 1781 684 21 1782 995 21 1783 1064 21 1784 1236 22 1785 1272 23 1786 1415 23 1787 1270 23 1788 1311 24 1789 1030 24 1790 910 24 1791 778 24 1792 932 25 1793 929 25 1794 773 25 1795 775 25 1796 761 25 1797 863 25 1798 676 26 1799 861 27 1800 583 28 1801 517 28 1802 610 28 1803 892 28 1804 1025 28 1805 1021 28 1806 849 28 1807 875 28 1808 1160 28 1809 1131 29 1810 1198 29 1811 1155 29 1812 1023 29 1813 1004 29 1814 1408 30 1815 1521 30 1816 1213 30 1817 634 30 1818 814 30 1819 884 30 1820 639 30 1821 686 30 1822 617 30 1823 836 30 1824 369 30 1825 195 30 1826 855 30 1827 1233 30 1828 667 30 1829 1071 31 1830 1008 31 1831 868 31 1832 1143 31 1833 1271 31 1834 615 32 1835 1257 32 1836 1003 33 1837 1549 33 1838 1199 33 1839 780 33 1840 1087 33 1841 887 34 1842 1021 34 1843 884 34 1844 934 34 1845 1145 34 1846 1222 34 1847 1122 34 1848 1278 34 1849 1092 34 1850 616 34 1851 1300 34 1852 1099 34 1853 1382 34 1854 1210 34 1855 1456 34 1856 1386 34 1857 1156 34 1858 924 34 1859 675 34 1860 1063 34 1861 723 34 1862 893 34 1863 1018 36 1864 1119 36 1865 1172 36 1866 1066 36 1867 517 36 1868 614 36 1869 776 36 1870 1071 36 1871 1259 36 1872 1324 36 1873 1347 36 1874 135 36 1875 1107 36 1876 1120 36 1877 735 35 1878 121 35 1879 509 34 1880 683 35 1881 390 35 1882 52 35 1883 348 35 1884 438 35 1885 752 35 1886 854 35 1887 515 35 1888 1153 35 1889 1398 35 1890 1333 35 1891 1268 35 1892 782 35 1893 957 35 1894 1035 35 1895 1189 35 1896 1055 35 1897 707 35 1898 906 35 1899 1136 35 1900 1312 35 1901 1620 35 1902 1564 35 1903 1281 35 1904 1206 35 1905 384 35 1906 1279 35 1907 1098 35 1908 1155 35 1909 1056 35 1910 992 35 1911 941 34 1912 1306 34 1913 1174 34 1914 1291 35 1915 1194 35 1916 1076 35 1917 1171 35 1918 1259 35 1919 1098 35 1920 950 35 1921 1212 35 1922 1353 36 1923 1184 36 1924 1258 36 1925 991 36 1926 724 36 1927 984 36 1928 1069 36 1929 1148 36 1930 1326 36 1931 721 36 1932 903 36 1933 792 36 1934 920 36 1935 830 36 1936 1100 36 1937 447 36 1938 812 36 1939 1073 36 1940 1137 36 1941 1290 36 1942 1266 36 1943 1177 36 1944 1119 36 1945 50 36 1946 790 36 1947 881 36 1948 750 36 1949 848 35 1950 639 35 1951 928 35 1952 563 35 1953 800 35 1954 1051 35 1955 1160 35 1956 1210 35 1957 816 35 1958 1220 35 1959 1069 35 1960 1486 35 1961 1379 35 1962 1399 35 1963 1633 35 1964 1471 35 1965 1198 35 1966 283 35 1967 985 35 1968 872 35 1969 1285 35 1970 1109 35 1971 1146 35 1972 1262 35 1973 1383 35 1974 1290 35 1975 1313 35 1976 1242 35 1977 902 35 1978 1413 34 1979 1142 34 1980 1037 34 1981 546 29 1982 548 28 1983 205 27 1984 404 26 1985 425 26 1986 427 26 1987 360 26 1988 633 26 1989 619 26 1990 482 26 1991 743 26 1992 1059 26 1993 864 26 1994 901 25 1995 231 24 1996 1616 24 1997 1531 24 1998 587 24 1999 884 24 2000 314 23 2001 1042 23 2002 1118 23 2003 1176 21 2004 1393 21