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Raimund Muscheler

Raimund Muscheler

Professor

Raimund Muscheler

A shift towards wetter and windier conditions in southern Sweden around the prominent solar minimum 2750 cal a BP

Författare

  • Anette Mellström
  • Nathalie Van der Putten
  • Raimund Muscheler
  • Rixt De Jong
  • Svante Björck

Summary, in English

A variety of palaeoclimatic records show a shift towards cooler, wetter and windier conditions in Europe around 2800 cal a BP. The shift broadly coincides with an increase of the atmospheric C-14 concentration, suggesting a connection between solar activity variations and climate change. Here we investigate a peat record from Undarsmosse in southern Sweden. In a previous study, based on a low-resolution chronology, this record showed increased aeolian sand influx and Sphagnum spore content around 2800 cal a BP, indicating high storm activity and wetter conditions. We applied the C-14 wiggle-match dating technique on the same record to construct a robust chronology to evaluate the temporal relationship to solar forcing. In addition, we performed plant macrofossil analysis to determine local vegetation changes. Based on the new chronology, a shift to a Sphagnum-dominated bog, representing wetter conditions, and the onset of a period with increased storminess occurred around 2700 cal a BP. These changes are, within age model uncertainties, synchronous with climatic changes inferred from other sites in Europe, suggesting a shift in the larger scale atmospheric circulation, possibly triggered by decreased solar activity.

Avdelning/ar

  • Kvartärgeologi
  • MERGE: ModElling the Regional and Global Earth system

Publiceringsår

2015

Språk

Engelska

Sidor

235-244

Publikation/Tidskrift/Serie

Journal of Quaternary Science

Volym

30

Issue

3

Dokumenttyp

Artikel i tidskrift

Förlag

John Wiley and Sons

Ämne

  • Geology

Nyckelord

  • C-14 wiggle-match dating
  • 2800 cal a BP
  • climate change
  • solar activity
  • southern Sweden

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1099-1417