A short-term climate oscillation during the Holsteinian interglacial (MIS 11c): An analogy to the 8.2 ka climatic event?
To gain insights into the mechanisms of abrupt climate change within interglacials, we have examined the characteristics and spatial extent of a prominent, climatically induced vegetation setback during the Holsteinian interglacial (Marine Isotope Stage 11c). Based on analyses of pollen and varves o...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_245141 2023-05-15T17:25:28+02:00 A short-term climate oscillation during the Holsteinian interglacial (MIS 11c): An analogy to the 8.2 ka climatic event? Koutsodendris, A. Pross, J. Müller, U. Brauer, A. Fletcher, W. Kühl, N. Kirilova, E. Verhagen, F. Lücke, A. Lotter, A. 2012 https://gfzpublic.gfz-potsdam.de/pubman/item/item_245141 unknown info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gloplacha.2012.05.011 https://gfzpublic.gfz-potsdam.de/pubman/item/item_245141 Global and Planetary Change 550 - Earth sciences info:eu-repo/semantics/article 2012 ftgfzpotsdam https://doi.org/10.1016/j.gloplacha.2012.05.011 2022-09-14T05:53:55Z To gain insights into the mechanisms of abrupt climate change within interglacials, we have examined the characteristics and spatial extent of a prominent, climatically induced vegetation setback during the Holsteinian interglacial (Marine Isotope Stage 11c). Based on analyses of pollen and varves of lake sediments from Dethlingen (northern Germany), this climatic oscillation, here termed the “Older Holsteinian Oscillation” (OHO), lasted 220 years. It can be subdivided into a 90-year-long decline of temperate tree taxa associated with an expansion of Pinus and herbs, and a 130-year-long recovery phase marked by the expansion of Betula and Alnus, and the subsequent recovery of temperate trees. The climate-induced nature of the OHO is corroborated by changes in diatom assemblages and δ18O measured on biogenic silica indicating an impact on the aquatic ecosystem of the Dethlingen palaeolake. The OHO is widely documented in pollen records from Europe north of 50° latitude and is characterized by boreal climate conditions with cold winters from the British Isles to Poland, with a gradient of decreasing temperature and moisture availability, and increased continentality towards eastern Europe. This pattern points to a weakened influence of the westerlies and/or a stronger influence of the Siberian High. A comparison of the OHO with the 8.2 ka event of the Holocene reveals close similarities regarding the imprint on terrestrial ecosystems and the interglacial boundary conditions. Hence, in analogy to the 8.2 ka event, a transient, meltwater-induced slowdown of the North Atlantic Deep Water formation appears as a plausible trigger mechanism for the OHO. If correct, meltwater release into the North Atlantic may be a more common agent of abrupt climate change during interglacials than previously thought. We conclude that meltwater-induced climate setbacks during interglacials preferentially occurred when low rates of summer insolation increase during the preceding terminations facilitated the persistence of large-scale ... Article in Journal/Newspaper North Atlantic Deep Water North Atlantic GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Global and Planetary Change 92-93 224 235 |
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GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
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ftgfzpotsdam |
language |
unknown |
topic |
550 - Earth sciences |
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550 - Earth sciences Koutsodendris, A. Pross, J. Müller, U. Brauer, A. Fletcher, W. Kühl, N. Kirilova, E. Verhagen, F. Lücke, A. Lotter, A. A short-term climate oscillation during the Holsteinian interglacial (MIS 11c): An analogy to the 8.2 ka climatic event? |
topic_facet |
550 - Earth sciences |
description |
To gain insights into the mechanisms of abrupt climate change within interglacials, we have examined the characteristics and spatial extent of a prominent, climatically induced vegetation setback during the Holsteinian interglacial (Marine Isotope Stage 11c). Based on analyses of pollen and varves of lake sediments from Dethlingen (northern Germany), this climatic oscillation, here termed the “Older Holsteinian Oscillation” (OHO), lasted 220 years. It can be subdivided into a 90-year-long decline of temperate tree taxa associated with an expansion of Pinus and herbs, and a 130-year-long recovery phase marked by the expansion of Betula and Alnus, and the subsequent recovery of temperate trees. The climate-induced nature of the OHO is corroborated by changes in diatom assemblages and δ18O measured on biogenic silica indicating an impact on the aquatic ecosystem of the Dethlingen palaeolake. The OHO is widely documented in pollen records from Europe north of 50° latitude and is characterized by boreal climate conditions with cold winters from the British Isles to Poland, with a gradient of decreasing temperature and moisture availability, and increased continentality towards eastern Europe. This pattern points to a weakened influence of the westerlies and/or a stronger influence of the Siberian High. A comparison of the OHO with the 8.2 ka event of the Holocene reveals close similarities regarding the imprint on terrestrial ecosystems and the interglacial boundary conditions. Hence, in analogy to the 8.2 ka event, a transient, meltwater-induced slowdown of the North Atlantic Deep Water formation appears as a plausible trigger mechanism for the OHO. If correct, meltwater release into the North Atlantic may be a more common agent of abrupt climate change during interglacials than previously thought. We conclude that meltwater-induced climate setbacks during interglacials preferentially occurred when low rates of summer insolation increase during the preceding terminations facilitated the persistence of large-scale ... |
format |
Article in Journal/Newspaper |
author |
Koutsodendris, A. Pross, J. Müller, U. Brauer, A. Fletcher, W. Kühl, N. Kirilova, E. Verhagen, F. Lücke, A. Lotter, A. |
author_facet |
Koutsodendris, A. Pross, J. Müller, U. Brauer, A. Fletcher, W. Kühl, N. Kirilova, E. Verhagen, F. Lücke, A. Lotter, A. |
author_sort |
Koutsodendris, A. |
title |
A short-term climate oscillation during the Holsteinian interglacial (MIS 11c): An analogy to the 8.2 ka climatic event? |
title_short |
A short-term climate oscillation during the Holsteinian interglacial (MIS 11c): An analogy to the 8.2 ka climatic event? |
title_full |
A short-term climate oscillation during the Holsteinian interglacial (MIS 11c): An analogy to the 8.2 ka climatic event? |
title_fullStr |
A short-term climate oscillation during the Holsteinian interglacial (MIS 11c): An analogy to the 8.2 ka climatic event? |
title_full_unstemmed |
A short-term climate oscillation during the Holsteinian interglacial (MIS 11c): An analogy to the 8.2 ka climatic event? |
title_sort |
short-term climate oscillation during the holsteinian interglacial (mis 11c): an analogy to the 8.2 ka climatic event? |
publishDate |
2012 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_245141 |
genre |
North Atlantic Deep Water North Atlantic |
genre_facet |
North Atlantic Deep Water North Atlantic |
op_source |
Global and Planetary Change |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gloplacha.2012.05.011 https://gfzpublic.gfz-potsdam.de/pubman/item/item_245141 |
op_doi |
https://doi.org/10.1016/j.gloplacha.2012.05.011 |
container_title |
Global and Planetary Change |
container_volume |
92-93 |
container_start_page |
224 |
op_container_end_page |
235 |
_version_ |
1766116902265946112 |