Evidence for higher-than-average air temperatures after the 8.2 ka event provided by a Central European δ 18 O record
The so-called 8.2 ka event represents one of the most prominent cold climate anomalies during the Holocene warm period. Accordingly, several studies have addressed its trigger mechanisms, absolute dating and regional characteristics so far. However, knowledge about subsequent climate recovery is sti...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_2501888 2023-05-15T17:34:09+02:00 Evidence for higher-than-average air temperatures after the 8.2 ka event provided by a Central European δ 18 O record Andersen, N. Lauterbach, S. Erlenkeuser, H. Danielopol, D. Namiotko, T. Hüls, M. Belmecheri, S. Dulski, P. Nantke, C. Meyer, H. Chapligin, B. von Grafenstein, U. Brauer, A. 2017 https://gfzpublic.gfz-potsdam.de/pubman/item/item_2501888 unknown info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2017.08.001 info:eu-repo/semantics/altIdentifier/urn/http://doi.crossref.org/servlet/query?format=unixref&pid=bib@gfz-potsdam.de&id=10.1016/j.quascirev.2017.08.001 https://gfzpublic.gfz-potsdam.de/pubman/item/item_2501888 Quaternary Science Reviews info:eu-repo/semantics/article 2017 ftgfzpotsdam https://doi.org/10.1016/j.quascirev.2017.08.001 2022-09-14T05:55:40Z The so-called 8.2 ka event represents one of the most prominent cold climate anomalies during the Holocene warm period. Accordingly, several studies have addressed its trigger mechanisms, absolute dating and regional characteristics so far. However, knowledge about subsequent climate recovery is still limited although this might be essential for the understanding of rapid climatic changes. Here we present a new sub-decadally resolved and precisely dated oxygen isotope (δ18O) record for the interval between 7.7 and 8.7 ka BP (103 calendar years before AD 1950), derived from the calcareous valves of benthic ostracods preserved in the varved lake sediments of pre-Alpine Mondsee (Austria). Besides a clear reflection of the 8.2 ka event, showing a good agreement in timing, duration and magnitude with other regional stable isotope records, the high-resolution Mondsee lake sediment record provides evidence for a 75-year-long interval of higher-than-average δ18O values directly after the 8.2 ka event, possibly reflecting increased air temperatures in Central Europe. This observation is consistent with evidence from other proxy records in the North Atlantic realm, thus most probably reflecting a hemispheric-scale climate signal rather than a local phenomenon. As a possible trigger we suggest an enhanced resumption of the Atlantic meridional overturning circulation (AMOC), supporting assumptions from climate model simulations. Article in Journal/Newspaper North Atlantic GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Quaternary Science Reviews 172 96 108 |
institution |
Open Polar |
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GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
unknown |
description |
The so-called 8.2 ka event represents one of the most prominent cold climate anomalies during the Holocene warm period. Accordingly, several studies have addressed its trigger mechanisms, absolute dating and regional characteristics so far. However, knowledge about subsequent climate recovery is still limited although this might be essential for the understanding of rapid climatic changes. Here we present a new sub-decadally resolved and precisely dated oxygen isotope (δ18O) record for the interval between 7.7 and 8.7 ka BP (103 calendar years before AD 1950), derived from the calcareous valves of benthic ostracods preserved in the varved lake sediments of pre-Alpine Mondsee (Austria). Besides a clear reflection of the 8.2 ka event, showing a good agreement in timing, duration and magnitude with other regional stable isotope records, the high-resolution Mondsee lake sediment record provides evidence for a 75-year-long interval of higher-than-average δ18O values directly after the 8.2 ka event, possibly reflecting increased air temperatures in Central Europe. This observation is consistent with evidence from other proxy records in the North Atlantic realm, thus most probably reflecting a hemispheric-scale climate signal rather than a local phenomenon. As a possible trigger we suggest an enhanced resumption of the Atlantic meridional overturning circulation (AMOC), supporting assumptions from climate model simulations. |
format |
Article in Journal/Newspaper |
author |
Andersen, N. Lauterbach, S. Erlenkeuser, H. Danielopol, D. Namiotko, T. Hüls, M. Belmecheri, S. Dulski, P. Nantke, C. Meyer, H. Chapligin, B. von Grafenstein, U. Brauer, A. |
spellingShingle |
Andersen, N. Lauterbach, S. Erlenkeuser, H. Danielopol, D. Namiotko, T. Hüls, M. Belmecheri, S. Dulski, P. Nantke, C. Meyer, H. Chapligin, B. von Grafenstein, U. Brauer, A. Evidence for higher-than-average air temperatures after the 8.2 ka event provided by a Central European δ 18 O record |
author_facet |
Andersen, N. Lauterbach, S. Erlenkeuser, H. Danielopol, D. Namiotko, T. Hüls, M. Belmecheri, S. Dulski, P. Nantke, C. Meyer, H. Chapligin, B. von Grafenstein, U. Brauer, A. |
author_sort |
Andersen, N. |
title |
Evidence for higher-than-average air temperatures after the 8.2 ka event provided by a Central European δ 18 O record |
title_short |
Evidence for higher-than-average air temperatures after the 8.2 ka event provided by a Central European δ 18 O record |
title_full |
Evidence for higher-than-average air temperatures after the 8.2 ka event provided by a Central European δ 18 O record |
title_fullStr |
Evidence for higher-than-average air temperatures after the 8.2 ka event provided by a Central European δ 18 O record |
title_full_unstemmed |
Evidence for higher-than-average air temperatures after the 8.2 ka event provided by a Central European δ 18 O record |
title_sort |
evidence for higher-than-average air temperatures after the 8.2 ka event provided by a central european δ 18 o record |
publishDate |
2017 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_2501888 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Quaternary Science Reviews |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2017.08.001 info:eu-repo/semantics/altIdentifier/urn/http://doi.crossref.org/servlet/query?format=unixref&pid=bib@gfz-potsdam.de&id=10.1016/j.quascirev.2017.08.001 https://gfzpublic.gfz-potsdam.de/pubman/item/item_2501888 |
op_doi |
https://doi.org/10.1016/j.quascirev.2017.08.001 |
container_title |
Quaternary Science Reviews |
container_volume |
172 |
container_start_page |
96 |
op_container_end_page |
108 |
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1766132897543094272 |