# 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/morc016-noaa.crn # Description: Chronology - NOAA Template File # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/treering/chronologies/africa/morc016.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,standard,N, ## numsamp number of samples,,,count,,tree ring,,,N, # #-------------------- # Data: # Missing_Values: -999 age_CE trsgi numsamp 1490 1046 1 1491 999 1 1492 844 1 1493 1025 1 1494 783 1 1495 1080 1 1496 850 1 1497 1286 1 1498 1306 1 1499 1573 1 1500 1562 1 1501 935 1 1502 167 1 1503 388 1 1504 716 1 1505 1112 1 1506 1323 1 1507 946 1 1508 859 1 1509 845 1 1510 937 1 1511 1213 1 1512 1188 1 1513 1068 1 1514 915 1 1515 558 1 1516 819 1 1517 1128 1 1518 1197 1 1519 1375 1 1520 900 1 1521 191 1 1522 560 1 1523 738 1 1524 619 1 1525 511 1 1526 371 1 1527 473 1 1528 518 1 1529 388 1 1530 505 1 1531 573 1 1532 593 1 1533 543 1 1534 502 1 1535 469 1 1536 443 1 1537 662 1 1538 470 1 1539 573 1 1540 420 1 1541 672 1 1542 476 1 1543 407 1 1544 1387 1 1545 2836 1 1546 1961 1 1547 1232 1 1548 770 1 1549 1101 1 1550 962 2 1551 793 2 1552 860 2 1553 1549 2 1554 1849 2 1555 1946 2 1556 1621 2 1557 1397 2 1558 1050 2 1559 1228 2 1560 912 2 1561 622 2 1562 905 2 1563 925 2 1564 777 2 1565 912 2 1566 755 2 1567 1206 2 1568 1101 2 1569 768 2 1570 1066 2 1571 1346 2 1572 1317 2 1573 1317 2 1574 1066 2 1575 675 2 1576 1118 2 1577 1587 2 1578 1417 2 1579 1551 2 1580 1281 2 1581 987 2 1582 856 2 1583 820 2 1584 1106 2 1585 796 2 1586 620 2 1587 965 2 1588 825 3 1589 1122 3 1590 1214 3 1591 1429 3 1592 1222 3 1593 997 3 1594 1516 3 1595 1476 3 1596 1412 3 1597 1428 3 1598 1156 3 1599 996 3 1600 769 3 1601 1187 3 1602 1300 3 1603 1277 3 1604 1553 3 1605 736 3 1606 796 3 1607 1055 3 1608 1208 4 1609 1149 4 1610 757 4 1611 777 4 1612 1226 4 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