noaa-recon-8712 Esper et al. 2007 Morocco PDSI Reconstruction Esper, J.; Frank, D.C.; Büntgen, U.; Verstege, A.; Luterbacher, J.; Xoplaki, E. Esper et al. 2007 Morocco PDSI Reconstruction 2007-12-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/8712 Investigator J. Esper Investigator D.C. Frank Investigator U. Büntgen Investigator A. Verstege Investigator J. Luterbacher Investigator E. Xoplaki earth science paleoclimate climate reconstructions|tree ring age,null,null,year Common Era,null,climate reconstructions|tree ring,null,null,N,null earth science paleoclimate climate reconstructions|tree ring Palmer Drought Severity Index,ring width,null,dimensionless,null,climate reconstructions|tree ring,null,null,N,null earth science paleoclimate climate reconstructions|tree ring Palmer Drought Severity Index,ring width,null,dimensionless,null,climate reconstructions|tree ring,null,null,N,self-calibrating PDSI earth science paleoclimate reconstructions geoscientificInformation Palmer Drought Index Reconstruction hydrology 1049 AD 2001 AD 901 cal yr BP -51 cal yr BP Complete 33.4 33.4 -5.1667 -5.1667 1830 1830 Continent Africa Northern Africa Morocco Atlas Mountains IS>LATITUDE 33.4>LONGITUDE -5.1667 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Jan Esper, David Frank, Ulf Büntgen, Anne Verstege, Jürg Luterbacher, and Elena Xoplaki 2007 Geophysical Research Letters 34 L17702 10.1029/2007GL030844 http://onlinelibrary.wiley.com/doi/10.1029/2007GL030844/abstract

Cedrus atlantica ring width data are used to reconstruct long-term changes in the Palmer Drought Severity Index (PDSI) over the past 953 years in Morocco, NW Africa. The reconstruction captures the dry conditions since the 1980s well and places this extreme period within a millennium-long context. PDSI values were above average for most of the 1450-1980 period, which let recent drought appear exceptional. However, our results also indicate that this pluvial episode of the past millennium was preceded by generally drier conditions back to 1049. Comparison of PDSI estimates with large-scale pressure field reconstructions revealed steady synoptic patterns for drought conditions over the past 350 years. The long-term changes from initially dry to pluvial to recent dry conditions are similar to PDSI trends reported from N America, and we suggest that they are related to long-term temperature changes, potentially teleconnected with ENSO variability and forced by solar irradiance changes.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/africa/morocco-pdsi2007.xls GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/africa/wassenburg2013pdsi.txt Data File; Updated scPDSI, Wassenburg et al. 2013 GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/africa/morocco-pdsi2007.txt USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11