# Touchan - Tizi u Treten - CDAT - ITRDB MORC016 #----------------------------------------------------------------------- # 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/9720 # Description: NOAA Landing Page of study # Online_Resource: https://www1.ncdc.noaa.gov//pub/data/paleo/treering/chronologies/africa/morc016r-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/morc016r.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 - Tizi u Treten - CDAT - ITRDB MORC016 #------------------- # 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: Tizi u Treten # Location: Morocco # Northernmost_Latitude: 32.4667 # Southernmost_Latitude: 32.4667 # Easternmost_Longitude: -5.0167 # Westernmost_Longitude: -5.0167 # Elevation: 1900 #------------------- # Data_Collection # Collection_Name: MORC016 # Earliest_Year: 1490 # Most_Recent_Year: 2003 # 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 1491 973 1 1492 851 1 1493 1144 1 1494 772 1 1495 1242 1 1496 800 1 1497 1400 1 1498 1108 1 1499 1360 1 1500 1159 1 1501 539 1 1502 221 1 1503 991 1 1504 1161 1 1505 1323 1 1506 1249 1 1507 721 1 1508 905 1 1509 953 1 1510 1055 1 1511 1265 1 1512 1043 1 1513 940 1 1514 873 1 1515 626 1 1516 1143 1 1517 1265 1 1518 1113 1 1519 1240 1 1520 639 1 1521 269 1 1522 1147 1 1523 1059 1 1524 814 1 1525 790 1 1526 728 1 1527 930 1 1528 902 1 1529 740 1 1530 949 1 1531 934 1 1532 906 1 1533 842 1 1534 836 1 1535 832 1 1536 831 1 1537 1067 1 1538 718 1 1539 960 1 1540 733 1 1541 1094 1 1542 718 1 1543 789 1 1544 1818 1 1545 2566 1 1546 654 1 1547 551 1 1548 611 1 1549 1272 1 1550 1018 1 1551 822 2 1552 1009 2 1553 1652 2 1554 1470 2 1555 1350 2 1556 952 2 1557 961 2 1558 770 2 1559 1191 2 1560 753 2 1561 683 2 1562 1169 2 1563 991 2 1564 832 2 1565 1073 2 1566 821 2 1567 1380 2 1568 959 2 1569 699 2 1570 1230 2 1571 1299 2 1572 1072 2 1573 1096 2 1574 845 2 1575 627 2 1576 1349 2 1577 1514 2 1578 1014 2 1579 1265 2 1580 897 2 1581 790 2 1582 867 2 1583 923 2 1584 1237 2 1585 724 2 1586 766 2 1587 1235 2 1588 1274 2 1589 882 3 1590 964 3 1591 1283 3 1592 874 3 1593 845 3 1594 1465 3 1595 1128 3 1596 1086 3 1597 947 3 1598 896 3 1599 987 3 1600 783 3 1601 1348 3 1602 1391 3 1603 1076 3 1604 1367 3 1605 210 3 1606 977 3 1607 1195 3 1608 1109 3 1609 1005 3 1610 863 3 1611 905 4 1612 1298 4 1613 546 4 1614 846 4 1615 980 4 1616 849 4 1617 1114 4 1618 1016 5 1619 1266 5 1620 968 5 1621 1177 5 1622 754 6 1623 1066 6 1624 1059 6 1625 936 6 1626 884 6 1627 921 6 1628 835 6 1629 1143 6 1630 876 6 1631 933 6 1632 943 6 1633 1026 7 1634 1109 8 1635 1170 8 1636 1125 8 1637 1207 8 1638 900 8 1639 892 8 1640 1178 8 1641 1268 9 1642 917 10 1643 983 10 1644 1048 10 1645 791 10 1646 1162 10 1647 681 10 1648 759 10 1649 1107 11 1650 1199 11 1651 1021 11 1652 1199 11 1653 1371 11 1654 927 11 1655 815 11 1656 901 12 1657 1272 12 1658 828 12 1659 1063 12 1660 879 12 1661 1097 12 1662 890 12 1663 947 13 1664 781 13 1665 853 13 1666 1085 13 1667 940 14 1668 866 15 1669 830 15 1670 874 15 1671 955 15 1672 852 15 1673 907 15 1674 933 15 1675 696 15 1676 901 15 1677 1294 15 1678 849 15 1679 1137 15 1680 950 15 1681 1291 15 1682 824 15 1683 421 15 1684 1020 15 1685 1137 15 1686 1149 15 1687 882 15 1688 926 15 1689 1299 15 1690 1043 15 1691 1153 15 1692 1156 15 1693 678 15 1694 690 15 1695 619 15 1696 744 15 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