Environmental response to Lateglacial climate change. Reconstructions of temperature and vegetation changes in northwest Europe
The Weichselian Lateglacial (~14.7-11.7 ka BP) is marked by major climatic and environmental changes in the North Atlantic region. The long-term warming trend arising during the Lateglacial was interrupted by a number of rapid climate oscillations, including the cold Younger Dryas Stadial (~12.8-11....
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Utrecht University
2012
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ftunivutrecht:oai:dspace.library.uu.nl:1874/240419 2023-07-23T04:19:37+02:00 Environmental response to Lateglacial climate change. Reconstructions of temperature and vegetation changes in northwest Europe van Asch, N. Coastal dynamics, Fluvial systems and Global change FG Kusten, Rivieren, Global Change Middelkoop, Hans Hoek, Wim Heiri, Oliver 2012-05-25 text/plain https://dspace.library.uu.nl/handle/1874/240419 en eng Utrecht University https://dspace.library.uu.nl/handle/1874/240419 info:eu-repo/semantics/OpenAccess Dissertation 2012 ftunivutrecht 2023-07-02T00:14:04Z The Weichselian Lateglacial (~14.7-11.7 ka BP) is marked by major climatic and environmental changes in the North Atlantic region. The long-term warming trend arising during the Lateglacial was interrupted by a number of rapid climate oscillations, including the cold Younger Dryas Stadial (~12.8-11.7 ka BP) and at least two centennial-scale cold oscillations (Greenland Interstadial events 1b and 1d) during the relatively warm Interstadial (~14.7-12.8 ka BP). These cold phases are thought to originate from meltwater pulses into the Atlantic Ocean, leading to a decreased North Atlantic thermohaline circulation. Thus, the most pronounced cooling during these cold phases is expected in regions close to the Atlantic Ocean. Understanding how these changes propagated inland will provide insights into the influence of the Atlantic Ocean on climatic and environmental changes in northwest Europe. The main research objective of this study was to establish how and to what extent Lateglacial climatic changes, and more specifically changes in summer temperature, were associated with vegetation changes in northwest Europe. To achieve the objective, calcareous lake sediment records from western Ireland, the Netherlands and northeast Germany were analysed for multiple proxies to reconstruct temperature and vegetation changes along a west-east transect through northwest Europe. Mean July air temperatures were inferred from the fossil chironomid assemblages, while pollen analyses on the same records enabled a direct comparison with Lateglacial vegetation development. Further, results from these records were integrated with additional Lateglacial northwest European records. Reconstructed average Interstadial mean July chironomid-inferred temperatures (C-IT) varied from ~11.5°C in the British Isles to ~16.5°C in continental northwest Europe, while the minimum mean July C-IT for the Younger Dryas varied from ~7.5°C in the British Isles to ~11.0°C in continental northwest Europe. Comparison with northwest European vegetation ... Doctoral or Postdoctoral Thesis Greenland North Atlantic North atlantic Thermohaline circulation Utrecht University Repository Greenland |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
description |
The Weichselian Lateglacial (~14.7-11.7 ka BP) is marked by major climatic and environmental changes in the North Atlantic region. The long-term warming trend arising during the Lateglacial was interrupted by a number of rapid climate oscillations, including the cold Younger Dryas Stadial (~12.8-11.7 ka BP) and at least two centennial-scale cold oscillations (Greenland Interstadial events 1b and 1d) during the relatively warm Interstadial (~14.7-12.8 ka BP). These cold phases are thought to originate from meltwater pulses into the Atlantic Ocean, leading to a decreased North Atlantic thermohaline circulation. Thus, the most pronounced cooling during these cold phases is expected in regions close to the Atlantic Ocean. Understanding how these changes propagated inland will provide insights into the influence of the Atlantic Ocean on climatic and environmental changes in northwest Europe. The main research objective of this study was to establish how and to what extent Lateglacial climatic changes, and more specifically changes in summer temperature, were associated with vegetation changes in northwest Europe. To achieve the objective, calcareous lake sediment records from western Ireland, the Netherlands and northeast Germany were analysed for multiple proxies to reconstruct temperature and vegetation changes along a west-east transect through northwest Europe. Mean July air temperatures were inferred from the fossil chironomid assemblages, while pollen analyses on the same records enabled a direct comparison with Lateglacial vegetation development. Further, results from these records were integrated with additional Lateglacial northwest European records. Reconstructed average Interstadial mean July chironomid-inferred temperatures (C-IT) varied from ~11.5°C in the British Isles to ~16.5°C in continental northwest Europe, while the minimum mean July C-IT for the Younger Dryas varied from ~7.5°C in the British Isles to ~11.0°C in continental northwest Europe. Comparison with northwest European vegetation ... |
author2 |
Coastal dynamics, Fluvial systems and Global change FG Kusten, Rivieren, Global Change Middelkoop, Hans Hoek, Wim Heiri, Oliver |
format |
Doctoral or Postdoctoral Thesis |
author |
van Asch, N. |
spellingShingle |
van Asch, N. Environmental response to Lateglacial climate change. Reconstructions of temperature and vegetation changes in northwest Europe |
author_facet |
van Asch, N. |
author_sort |
van Asch, N. |
title |
Environmental response to Lateglacial climate change. Reconstructions of temperature and vegetation changes in northwest Europe |
title_short |
Environmental response to Lateglacial climate change. Reconstructions of temperature and vegetation changes in northwest Europe |
title_full |
Environmental response to Lateglacial climate change. Reconstructions of temperature and vegetation changes in northwest Europe |
title_fullStr |
Environmental response to Lateglacial climate change. Reconstructions of temperature and vegetation changes in northwest Europe |
title_full_unstemmed |
Environmental response to Lateglacial climate change. Reconstructions of temperature and vegetation changes in northwest Europe |
title_sort |
environmental response to lateglacial climate change. reconstructions of temperature and vegetation changes in northwest europe |
publisher |
Utrecht University |
publishDate |
2012 |
url |
https://dspace.library.uu.nl/handle/1874/240419 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland North Atlantic North atlantic Thermohaline circulation |
genre_facet |
Greenland North Atlantic North atlantic Thermohaline circulation |
op_relation |
https://dspace.library.uu.nl/handle/1874/240419 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1772182868792967168 |