# 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/morc016a-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/morc016a.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,ARSTAN,N, ## numsamp number of samples,,,count,,tree ring,,,N, # #-------------------- # Data: # Missing_Values: -999 age_CE trsgi numsamp 1486 1046 1 1487 999 1 1488 844 1 1489 1025 1 1490 783 1 1491 848 1 1492 750 1 1493 981 1 1494 733 1 1495 1051 1 1496 790 1 1497 1251 1 1498 1223 1 1499 1464 1 1500 1422 1 1501 801 1 1502 177 1 1503 602 1 1504 982 1 1505 1280 1 1506 1303 1 1507 801 1 1508 782 1 1509 863 1 1510 1011 1 1511 1264 1 1512 1151 1 1513 1003 1 1514 881 1 1515 589 1 1516 943 1 1517 1230 1 1518 1211 1 1519 1317 1 1520 796 1 1521 186 1 1522 737 1 1523 928 1 1524 736 1 1525 545 1 1526 382 1 1527 537 1 1528 582 1 1529 410 1 1530 503 1 1531 540 1 1532 541 1 1533 471 1 1534 423 1 1535 401 1 1536 386 1 1537 606 1 1538 369 1 1539 476 1 1540 312 1 1541 590 1 1542 367 1 1543 303 1 1544 1299 1 1545 2603 1 1546 1440 1 1547 739 1 1548 524 1 1549 1177 1 1550 1251 1 1551 954 2 1552 938 2 1553 1608 2 1554 1840 2 1555 1845 2 1556 1463 2 1557 1323 2 1558 1116 2 1559 1418 2 1560 1106 2 1561 818 2 1562 1123 2 1563 1105 2 1564 925 2 1565 1032 2 1566 839 2 1567 1305 2 1568 1130 2 1569 767 2 1570 1106 2 1571 1373 2 1572 1305 2 1573 1270 2 1574 1011 2 1575 692 2 1576 1243 2 1577 1690 2 1578 1411 2 1579 1497 2 1580 1214 2 1581 1015 2 1582 989 2 1583 1000 2 1584 1292 2 1585 904 2 1586 718 2 1587 1088 2 1588 1338 2 1589 1073 3 1590 986 3 1591 1279 3 1592 1068 3 1593 919 3 1594 1438 3 1595 1397 3 1596 1339 3 1597 1164 3 1598 1045 3 1599 1098 3 1600 904 3 1601 1337 3 1602 1598 3 1603 1424 3 1604 1631 3 1605 622 3 1606 874 3 1607 1227 3 1608 1300 3 1609 1186 3 1610 946 3 1611 903 4 1612 1293 4 1613 744 4 1614 713 4 1615 816 4 1616 745 4 1617 955 4 1618 933 5 1619 1179 5 1620 1029 5 1621 1171 5 1622 850 6 1623 997 6 1624 1078 6 1625 988 6 1626 879 6 1627 845 6 1628 752 6 1629 1000 6 1630 852 6 1631 816 6 1632 805 6 1633 888 7 1634 1021 8 1635 1144 8 1636 1171 8 1637 1282 8 1638 1062 8 1639 954 8 1640 1193 8 1641 1414 9 1642 1177 10 1643 1100 10 1644 1140 10 1645 929 10 1646 1175 10 1647 806 10 1648 670 10 1649 931 11 1650 1153 11 1651 1086 11 1652 1205 11 1653 1464 11 1654 1202 11 1655 966 11 1656 931 12 1657 1297 12 1658 1043 12 1659 1102 12 1660 943 12 1661 1089 12 1662 969 12 1663 941 13 1664 755 13 1665 716 13 1666 922 13 1667 872 14 1668 755 15 1669 645 15 1670 636 15 1671 716 15 1672 639 15 1673 634 15 1674 651 15 1675 425 15 1676 503 15 1677 930 15 1678 716 15 1679 879 15 1680 789 15 1681 1114 15 1682 849 15 1683 297 15 1684 603 15 1685 887 15 1686 1040 15 1687 813 15 1688 732 15 1689 1108 15 1690 1084 15 1691 1177 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