Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Raimund Muscheler

Raimund Muscheler

Professor

Raimund Muscheler

Radionuclide wiggle matching reveals a nonsynchronous early Holocene climate oscillation in Greenland and western Europe around a grand solar minimum

Författare

  • Florian Mekhaldi
  • Markus Czymzik
  • Florian Adolphi
  • Jesper Sjolte
  • Svante Björck
  • Ala Aldahan
  • Achim Brauer
  • Celia Martin-Puertas
  • Göran Possnert
  • Raimund Muscheler

Summary, in English

Several climate oscillations have been reported from the early Holocene superepoch, the best known of which is the Preboreal oscillation (PBO). It is still unclear how the PBO and the number of climate oscillations observed in Greenland ice cores and European terrestrial records are related to one another. This is mainly due to uncertainties in the chronologies of the records. Here, we present new, high-resolution 10Be concentration data from the varved Meerfelder Maar sediment record in Germany, spanning the period 11 310-11 000 years BP. These new data allow us to synchronize this well-studied record, as well as Greenland ice core records, with the IntCal13 timescale via radionuclide wiggle matching. In doing so, we show that the climate oscillations identified in Greenland and Europe between 11 450 and 11 000 years BP were not synchronous but terminated and began, respectively, with the onset of a grand solar minimum. A similar spatial anomaly pattern is found in a number of modeling studies on solar forcing of climate in the North Atlantic region. We further postulate that freshwater delivery to the North Atlantic would have had the potential to amplify solar forcing through a slowdown of the Atlantic meridional overturning circulation (AMOC) reinforcing surface air temperature anomalies in the region.

Avdelning/ar

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

Publiceringsår

2020

Språk

Engelska

Sidor

1145-1157

Publikation/Tidskrift/Serie

Climate of the Past

Volym

16

Issue

4

Dokumenttyp

Artikel i tidskrift

Förlag

Copernicus Gesellschaft mbH

Ämne

  • Climate Research

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1814-9324