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

Mekhaldi, Florian LU ; Czymzik, Markus LU ; Adolphi, Florian LU ; Sjolte, Jesper LU orcid ; Björck, Svante LU ; Aldahan, Ala ; Brauer, Achim ; Martin-Puertas, Celia ; Possnert, Göran and Muscheler, Raimund LU orcid (2020) In Climate of the Past 16(4). p.1145-1157
Abstract

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... (More)

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.

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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Climate of the Past
volume
16
issue
4
pages
13 pages
publisher
Copernicus GmbH
external identifiers
  • scopus:85088408674
ISSN
1814-9324
DOI
10.5194/cp-16-1145-2020
language
English
LU publication?
yes
id
3facf0e6-9d19-4750-a6c2-9329bad47f3f
date added to LUP
2020-08-04 11:33:08
date last changed
2022-04-19 00:02:36
@article{3facf0e6-9d19-4750-a6c2-9329bad47f3f,
  abstract     = {{<p>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.</p>}},
  author       = {{Mekhaldi, Florian and Czymzik, Markus and Adolphi, Florian and Sjolte, Jesper and Björck, Svante and Aldahan, Ala and Brauer, Achim and Martin-Puertas, Celia and Possnert, Göran and Muscheler, Raimund}},
  issn         = {{1814-9324}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{1145--1157}},
  publisher    = {{Copernicus GmbH}},
  series       = {{Climate of the Past}},
  title        = {{Radionuclide wiggle matching reveals a nonsynchronous early Holocene climate oscillation in Greenland and western Europe around a grand solar minimum}},
  url          = {{http://dx.doi.org/10.5194/cp-16-1145-2020}},
  doi          = {{10.5194/cp-16-1145-2020}},
  volume       = {{16}},
  year         = {{2020}},
}