# 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/morc017a-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/morc017a.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,ARSTAN,N, ## numsamp number of samples,,,count,,tree ring,,,N, # #-------------------- # Data: # Missing_Values: -999 age_CE trsgi numsamp 1696 801 1 1697 1160 2 1698 1044 1 1699 981 2 1700 1168 2 1701 701 2 1702 959 2 1703 921 2 1704 1179 2 1705 1208 2 1706 1216 2 1707 1217 2 1708 1147 2 1709 896 2 1710 1030 2 1711 932 2 1712 1019 2 1713 823 2 1714 769 2 1715 1038 2 1716 941 3 1717 908 3 1718 1048 4 1719 923 4 1720 888 4 1721 928 4 1722 872 4 1723 1011 4 1724 1131 4 1725 916 4 1726 880 4 1727 1117 4 1728 1008 5 1729 945 7 1730 1163 8 1731 1342 8 1732 988 8 1733 799 8 1734 396 8 1735 887 8 1736 993 8 1737 961 8 1738 521 8 1739 790 8 1740 1115 8 1741 1011 8 1742 1028 8 1743 1167 8 1744 954 8 1745 1025 8 1746 1121 8 1747 1038 8 1748 910 9 1749 874 9 1750 902 10 1751 1188 10 1752 1237 10 1753 795 11 1754 897 11 1755 941 11 1756 1001 11 1757 1199 11 1758 1205 11 1759 902 11 1760 1038 12 1761 1073 12 1762 1342 12 1763 1419 12 1764 1304 12 1765 753 14 1766 960 15 1767 1014 15 1768 1018 15 1769 1241 15 1770 1170 15 1771 1165 15 1772 1252 15 1773 1104 16 1774 1128 16 1775 979 18 1776 1135 20 1777 1056 20 1778 1137 20 1779 484 20 1780 669 20 1781 712 20 1782 1031 21 1783 1092 21 1784 1236 21 1785 1240 21 1786 1393 22 1787 1227 23 1788 1240 23 1789 964 24 1790 873 24 1791 773 24 1792 945 24 1793 950 25 1794 779 25 1795 788 25 1796 783 25 1797 888 25 1798 718 25 1799 872 25 1800 607 27 1801 529 28 1802 648 28 1803 962 28 1804 1049 28 1805 1042 28 1806 873 28 1807 899 28 1808 1189 28 1809 1114 28 1810 1207 29 1811 1136 29 1812 994 29 1813 989 29 1814 1385 29 1815 1486 30 1816 1174 30 1817 620 30 1818 829 30 1819 896 30 1820 671 30 1821 719 30 1822 653 30 1823 866 30 1824 407 30 1825 252 30 1826 918 30 1827 1286 30 1828 679 30 1829 1141 30 1830 1031 30 1831 892 31 1832 1189 31 1833 1295 31 1834 626 31 1835 1286 32 1836 1008 32 1837 1551 32 1838 1193 33 1839 763 33 1840 1080 33 1841 866 33 1842 1026 33 1843 879 34 1844 938 34 1845 1154 34 1846 1208 34 1847 1112 34 1848 1263 34 1849 1070 34 1850 597 34 1851 1297 34 1852 1086 34 1853 1347 34 1854 1171 34 1855 1397 34 1856 1350 34 1857 1110 34 1858 882 34 1859 652 34 1860 1074 34 1861 726 34 1862 893 34 1863 1022 34 1864 1102 34 1865 1166 35 1866 1046 35 1867 476 36 1868 611 36 1869 795 36 1870 1102 36 1871 1263 36 1872 1308 36 1873 1307 36 1874 138 36 1875 1114 36 1876 1128 36 1877 741 35 1878 146 35 1879 570 34 1880 752 34 1881 471 35 1882 137 35 1883 454 35 1884 546 35 1885 854 35 1886 940 35 1887 540 35 1888 1155 35 1889 1389 35 1890 1303 35 1891 1259 35 1892 763 35 1893 986 35 1894 1046 35 1895 1201 35 1896 1065 35 1897 713 35 1898 925 35 1899 1148 35 1900 1299 35 1901 1585 35 1902 1522 35 1903 1224 35 1904 1177 35 1905 347 35 1906 1287 35 1907 1101 35 1908 1141 35 1909 1043 35 1910 977 35 1911 955 34 1912 1281 34 1913 1134 34 1914 1277 34 1915 1140 35 1916 1023 35 1917 1139 35 1918 1254 35 1919 1040 35 1920 899 35 1921 1165 35 1922 1322 35 1923 1140 36 1924 1216 36 1925 966 36 1926 703 36 1927 977 36 1928 1059 36 1929 1125 36 1930 1321 36 1931 725 36 1932 901 36 1933 817 36 1934 945 36 1935 861 36 1936 1133 36 1937 481 36 1938 851 36 1939 1113 36 1940 1160 36 1941 1301 36 1942 1310 36 1943 1175 36 1944 1144 36 1945 70 36 1946 832 36 1947 915 36 1948 777 36 1949 894 35 1950 647 35 1951 950 35 1952 572 35 1953 829 35 1954 1079 35 1955 1173 35 1956 1201 35 1957 801 35 1958 1235 35 1959 1059 35 1960 1469 35 1961 1331 35 1962 1324 35 1963 1569 35 1964 1339 35 1965 1087 35 1966 225 35 1967 978 35 1968 864 35 1969 1269 35 1970 1066 35 1971 1103 35 1972 1243 35 1973 1331 35 1974 1244 35 1975 1272 35 1976 1188 35 1977 864 35 1978 1366 34 1979 1166 34 1980 1000 34 1981 495 29 1982 546 28 1983 233 27 1984 479 26 1985 509 26 1986 536 26 1987 477 26 1988 741 26 1989 715 26 1990 570 26 1991 848 26 1992 1113 26 1993 909 26 1994 952 25 1995 254 24 1996 1666 24 1997 1562 24 1998 573 24 1999 886 24 2000 352 23 2001 1102 23 2002 1147 23 2003 1221 21 2004 1555 21