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Warm summers during the Younger Dryas cold reversal

Schenk, Frederik (author)
Stockholm University,KTH,Stockholms universitet,Institutionen för geologiska vetenskaper,KTH Royal Institute of Technology, Sweden,Linné Flow Center, FLOW,Stockholm Univ, Bolin Ctr Climate Res, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Geol Sci, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden
Väliranta, Minna (author)
Univ Helsinki, Ecosyst & Environm Res Programme, Fac Biol & Environm Sci, ECRU, POB 65, FIN-00014 Helsinki, Finland.;Univ Helsinki, Helsinki Inst Sustainabil Sci HELSUS, POB 65, FIN-00014 Helsinki, Finland.,University of Helsinki
Muschitiello, Francesco (author)
Stockholm University,Stockholms universitet,Institutionen för geologiska vetenskaper,University of Cambridge, UK; Columbia University, USA,Stockholm Univ, Bolin Ctr Climate Res, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Geol Sci, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden.;Univ Cambridge, Dept Geog, Cambridge CB2 3EN, England.;Columbia Univ, Lamont Doherty Earth Observ, 61 Route 9 W, New York, NY 10964 USA.,Lamont-Doherty Earth Observatory
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Tarasov, Lev (author)
Mem Univ Newfoundland, Dept Phys & Phys Oceanog, St John, NF A1B 3X7, Canada.,Memorial University of Newfoundland
Heikkilä, Maija (author)
Univ Helsinki, Ecosyst & Environm Res Programme, Fac Biol & Environm Sci, ECRU, POB 65, FIN-00014 Helsinki, Finland.;Univ Helsinki, Helsinki Inst Sustainabil Sci HELSUS, POB 65, FIN-00014 Helsinki, Finland.,University of Helsinki
Björck, Svante (author)
Stockholm University,Lunds universitet,Stockholms universitet,Institutionen för geologiska vetenskaper,Lund University, Sweden,Stockholm Univ, Bolin Ctr Climate Res, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Geol Sci, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden.;Lund Univ, Dept Geol, Quaternary Sci, Box 117, SE-22100 Lund, Sweden.,Kvartärgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Quaternary Sciences,Department of Geology,Faculty of Science
Brandefelt, Jenny (author)
Swedish Nucl Fuel & Waste Management Co SKB, Box 250, SE-10124 Stockholm, Sweden.,The Swedish Nuclear Fuel and Waste Management Company
Johansson, Arne V., 1953- (author)
KTH Royal Institute of Technology,KTH,Linné Flow Center, FLOW,Mekanik
Näslund, Jens-Ove (author)
Stockholm University,Stockholms universitet,Institutionen för naturgeografi och kvartärgeologi (INK),Swedish Nuclear Fuel and Waste Management Company (SKB), Sweden,Swedish Nucl Fuel & Waste Management Co SKB, Box 250, SE-10124 Stockholm, Sweden.;Stockholm Univ, Dept Phys Geog & Quaternary Geol, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden.,The Swedish Nuclear Fuel and Waste Management Company
Wohlfarth, Barbara (author)
Stockholm University,Stockholms universitet,Institutionen för geologiska vetenskaper,Stockholm Univ, Bolin Ctr Climate Res, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Geol Sci, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden.
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 (creator_code:org_t)
2018-04-24
2018
English.
In: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 9
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The Younger Dryas (YD) cold reversal interrupts the warming climate of the deglaciation with global climatic impacts. The sudden cooling is typically linked to an abrupt slowdown of the Atlantic Meridional Overturning Circulation (AMOC) in response to meltwater discharges from ice sheets. However, inconsistencies regarding the YD-response of European summer temperatures have cast doubt whether the concept provides a sufficient explanation. Here we present results from a high-resolution global climate simulation together with a new July temperature compilation based on plant indicator species and show that European summers remain warm during the YD. Our climate simulation provides robust physical evidence that atmospheric blocking of cold westerly winds over Fennoscandia is a key mechanism counteracting the cooling impact of an AMOC-slowdown during summer. Despite the persistence of short warm summers, the YD is dominated by a shift to a continental climate with extreme winter to spring cooling and short growing seasons.

Subject headings

NATURVETENSKAP  -- Geovetenskap och miljövetenskap (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences (hsv//eng)
NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)

Keyword

Palaeoceanography
Palaeoclimate

Publication and Content Type

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art (subject category)

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