TY - JOUR
T1 - Synchronizing 10Be in two varved lake sediment records to IntCal13 14C during three grand solar minima
AU - Czymzik, Markus
AU - Muscheler, Raimund
AU - Adolphi, Florian
AU - Mekhaldi, Florian
AU - Dräger, Nadine
AU - Ott, Florian
AU - Slowinski, Michal
AU - Blaszkiewicz, Miroslaw
AU - Aldahan, Ala
AU - Possnert, Goran
AU - Brauer, Achim
N1 - Funding Information:
Markus Czymzik was financed by a German Science Foundation Research Fellowship (DFG grants CZ 227/1-1 and CZ 227/1-2). Further financial support was provided through an Endowment of the Royal Physiographic Society in Lund, a Linnaeus grant to Lund University (LUCCI) and the Swedish Research Council (Dnr: 2013-8421). Florian Adolphi is supported by the Swedish Research Council (VR grant: 4.1-2016-00218).
Funding Information:
Acknowledgements. Markus Czymzik was financed by a German Science Foundation Research Fellowship (DFG grants CZ 227/1-1 and CZ 227/1-2). Further financial support was provided through an Endowment of the Royal Physiographic Society in Lund, a Linnaeus grant to Lund University (LUCCI) and the Swedish Research Council (Dnr: 2013-8421). Florian Adolphi is supported by the Swedish Research Council (VR grant: 4.1-2016-00218). Ala Aldahan thanks the UAEU for support through UPAR funding. This study is a contribution to the Virtual Institute of Integrated Climate and Landscape Evolution Analyses (ICLEA) grant number VH-VI-415, the “BaltRap” network of the Leibniz association (The Baltic Sea and its southern lowlands: Proxy-environment interactions in times of rapid changes) and the climate initiative REKLIM Topic 8 “Abrupt climate change derived from proxy data” of the Helmholtz Association. We thank Inger Påhlsson for the extraction of 10Be from sediment samples. 10Be data from TSK and JC are available at the PANGAEA data library (www.pangaea.de). Quentin Simon and an anonymous reviewer are acknowledged for their constructive comments which helped to improve the manuscript.
Publisher Copyright:
© 2018 Author(s).
PY - 2018/5/31
Y1 - 2018/5/31
N2 - Timescale uncertainties between paleoclimate reconstructions often inhibit studying the exact timing, spatial expression and driving mechanisms of climate variations. Detecting and aligning the globally common cosmogenic radionuclide production signal via a curve fitting method provides a tool for the quasi-continuous synchronization of paleoclimate archives. In this study, we apply this approach to synchronize 10Be records from varved sediments of Tiefer See and Lake Czechowskie covering the Maunder, Homeric and 5500 aBP grand solar minima with 14C production rates inferred from the IntCal13 calibration curve. Our analyses indicate best fits with 14C production rates when the 10Be records from Tiefer See were shifted for 8 (-12/ + 4) (Maunder Minimum), 31 (-16/ + 12) (Homeric Minimum) and 86 (-22/ + 18) years (5500 aBP grand solar minimum) towards the past. The best fit between the Lake Czechowskie 10Be record for the 5500 aBP grand solar minimum and 14C production was obtained when the 10Be time series was shifted 29 (-8/ + 7) years towards present. No significant fits were detected between the Lake Czechowskie 10Be records for the Maunder and Homeric minima and 14C production, likely due to intensified in-lake sediment resuspension since about 2800 aBP, transporting old 10Be to the coring location. Our results provide a proof of concept for facilitating 10Be in varved lake sediments as a novel synchronization tool required for investigating leads and lags of proxy responses to climate variability. However, they also point to some limitations of 10Be in these archives, mainly connected to in-lake sediment resuspension processes.
AB - Timescale uncertainties between paleoclimate reconstructions often inhibit studying the exact timing, spatial expression and driving mechanisms of climate variations. Detecting and aligning the globally common cosmogenic radionuclide production signal via a curve fitting method provides a tool for the quasi-continuous synchronization of paleoclimate archives. In this study, we apply this approach to synchronize 10Be records from varved sediments of Tiefer See and Lake Czechowskie covering the Maunder, Homeric and 5500 aBP grand solar minima with 14C production rates inferred from the IntCal13 calibration curve. Our analyses indicate best fits with 14C production rates when the 10Be records from Tiefer See were shifted for 8 (-12/ + 4) (Maunder Minimum), 31 (-16/ + 12) (Homeric Minimum) and 86 (-22/ + 18) years (5500 aBP grand solar minimum) towards the past. The best fit between the Lake Czechowskie 10Be record for the 5500 aBP grand solar minimum and 14C production was obtained when the 10Be time series was shifted 29 (-8/ + 7) years towards present. No significant fits were detected between the Lake Czechowskie 10Be records for the Maunder and Homeric minima and 14C production, likely due to intensified in-lake sediment resuspension since about 2800 aBP, transporting old 10Be to the coring location. Our results provide a proof of concept for facilitating 10Be in varved lake sediments as a novel synchronization tool required for investigating leads and lags of proxy responses to climate variability. However, they also point to some limitations of 10Be in these archives, mainly connected to in-lake sediment resuspension processes.
UR - http://www.scopus.com/inward/record.url?scp=85048025871&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85048025871&partnerID=8YFLogxK
U2 - 10.5194/cp-14-687-2018
DO - 10.5194/cp-14-687-2018
M3 - Article
AN - SCOPUS:85048025871
SN - 1814-9324
VL - 14
SP - 687
EP - 696
JO - Climate of the Past
JF - Climate of the Past
IS - 5
ER -