TY - JOUR
T1 - Radionuclide wiggle matching reveals a nonsynchronous early Holocene climate oscillation in Greenland and western Europe around a grand solar minimum
AU - Mekhaldi, Florian
AU - Czymzik, Markus
AU - Adolphi, Florian
AU - Sjolte, Jesper
AU - Björck, Svante
AU - Aldahan, Ala
AU - Brauer, Achim
AU - Martin-Puertas, Celia
AU - Possnert, Göran
AU - Muscheler, Raimund
N1 - Funding Information:
Financial support. This research has been supported by the Royal Physiographic Society of Lund (application no. 36278 to Florian Mekhaldi) and the Swedish Research Council (grant no. DNR2013-8421 to Raimund Muscheler). Markus Czymzik was funded by a grant from the German Research Foundation (DFG) (grant no. CZ 227/4-1) and the BaltRap network of the Leibniz Association (SAW-2017-IOW2). Florian Adolphi was supported by the Swedish Research Council (grant no. DNR2016-00218). Ala Aldahan thanks the UAEU for the support through the UPAR funding.
Publisher Copyright:
© Author(s) 2020.
PY - 2020/7/3
Y1 - 2020/7/3
N2 - 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.
AB - 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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U2 - 10.5194/cp-16-1145-2020
DO - 10.5194/cp-16-1145-2020
M3 - Article
AN - SCOPUS:85088408674
SN - 1814-9324
VL - 16
SP - 1145
EP - 1157
JO - Climate of the Past
JF - Climate of the Past
IS - 4
ER -