Millennial to orbital-scale variations of drought intensity in the Eastern Mediterranean
Type | Article | ||||||||||||||||||||||||
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Date | 2016-02 | ||||||||||||||||||||||||
Language | English | ||||||||||||||||||||||||
Author(s) | Stockhecke Mona1, 2, 3, Timmermann Axel4, 5, Kipfer Rolf6, 7, 8, Haug Gerald H.2, Kwiecien Ola6, 9, Friedrich Tobias4, 5, Menviel Laurie10, 11, Litt Thomas12, Pickarski Nadine12, Anselmetti Flavio S.3, 13, 14 | ||||||||||||||||||||||||
Affiliation(s) | 1 : Univ Minnesota, Large Lakes Observ, 10 Univ Dr 206 RLB, Duluth, MN 55812 USA. 2 : Swiss Fed Inst Technol, Inst Geol, Sonneggstr 5, CH-8092 Zurich, Switzerland. 3 : Eawag, Swiss Fed Inst Aquat Sci & Technol, Dept Surface Waters Res & Management, Uberlandstr 133, CH-8600 Dubendorf, Switzerland. 4 : Univ Hawaii, IPRC, 1680 East West Rd, Honolulu, HI 96822 USA. 5 : Univ Hawaii, SOEST, Dept Oceanog, 1680 East West Rd, Honolulu, HI 96822 USA. 6 : Eawag, Swiss Fed Inst Aquat Sci & Technol, Dept Water Resources & Drinking Water, Uberlandstr 133, CH-8600 Dubendorf, Switzerland. 7 : Swiss Fed Inst Technol, Inst Biogeochem & Pollutant Dynam, Univ Str 16, CH-8092 Zurich, Switzerland. 8 : Swiss Fed Inst Technol, Inst Geochem & Petrol, Clausiusstr 25, CH-8092 Zurich, Switzerland. 9 : Ruhr Univ Bochum, Univ Str 150, D-44801 Bochum, Germany. 10 : Univ New S Wales, CCRC, Matthews Bldg Level 4, Sydney, NSW 2052, Australia. 11 : ARC Ctr Excellence Climate Syst Sci, Canberra, ACT, Australia. 12 : Univ Bonn, Steinmann Inst Geol Mineral & Paleontol, Nussallee 8, D-53115 Bonn, Germany. 13 : Univ Bern, Inst Geol Sci, Baltzerstr 1 3, CH-3012 Bern, Switzerland. 14 : Univ Bern, Oeschger Ctr Climate Change Res OCCR, CH-3012 Bern, Switzerland. |
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Source | Quaternary Science Reviews (0277-3791) (Pergamon-elsevier Science Ltd), 2016-02 , Vol. 133 , P. 77-95 | ||||||||||||||||||||||||
DOI | 10.1016/j.quascirev.2015.12.016 | ||||||||||||||||||||||||
WOS© Times Cited | 77 | ||||||||||||||||||||||||
Keyword(s) | Dansgaard-Oeschger variability, Mediterranean droughts, Milankovitch cycles, Lake Van, ICDP PALEOVAN | ||||||||||||||||||||||||
Abstract | Millennial to orbital-scale rainfall changes in the Mediterranean region and corresponding variations in vegetation patterns were the result of large-scale atmospheric reorganizations. In spite of recent efforts to reconstruct this variability using a range of proxy archives, the underlying physical mechanisms have remained elusive. Through the analysis of a new high-resolution sedimentary section from Lake Van (Turkey) along with climate modeling experiments, we identify massive droughts in the Eastern Mediterranean for the past four glacial cycles, which have a pervasive link with known intervals of enhanced North Atlantic glacial iceberg calving, weaker Atlantic Meridional Overturning Circulation and Dansgaard-Oeschger cold conditions. On orbital timescales, the topographic effect of large Northern Hemisphere ice sheets and periods with minimum insolation seasonality further exacerbated drought intensities by suppressing both summer and winter precipitation. |
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