Ice sheet influence on atmospheric circulation explains the patterns of Pleistocene alpine glacier records in North America
We explore the hypothesis that the relative size of Pleistocene ice sheets in North America modulated regional climate and alpine glaciation. We compare Pleistocene alpine glacier chronologies across North America with a comprehensive general circulation model using reconstructed ice sheet extents a...
Published in: | Earth and Planetary Science Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | http://hdl.handle.net/10477/81387 https://doi.org/10.1016/j.epsl.2020.116115 |
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ftunivbuffalo:oai:ubir.buffalo.edu:10477/81387 2023-05-15T16:39:58+02:00 Ice sheet influence on atmospheric circulation explains the patterns of Pleistocene alpine glacier records in North America Tulenko, Joseph P. Lofverstrom, Marcus Briner, Jason P. 2020-01-27 application/pdf http://hdl.handle.net/10477/81387 https://doi.org/10.1016/j.epsl.2020.116115 en eng Elsevier doi:10.1016/j.epsl.2020.116115 Tulenko, J.P., Lofverstrom, M., & Briner, J.P. (2020). Ice sheet influence on atmospheric circulation explains the patterns of Pleistocene alpine glacier records in North America. Earth and Planetary Science Letters (534)15, 116115. https://doi.org/10.1016/j.epsl.2020.116115 http://hdl.handle.net/10477/81387 © 2020 Elsevier B.V. All rights reserved. Elsevier alpine glaciers Laurentide Ice Sheet Marine Isotope Stage 4 Marine Isotope Stage 2 Beringia Western US Text Article Preprint Postprint 2020 ftunivbuffalo https://doi.org/10.1016/j.epsl.2020.116115 2022-02-20T06:33:23Z We explore the hypothesis that the relative size of Pleistocene ice sheets in North America modulated regional climate and alpine glaciation. We compare Pleistocene alpine glacier chronologies across North America with a comprehensive general circulation model using reconstructed ice sheet extents at peak glacial conditions during Marine Isotope Stage (MIS) 2 and MIS 4. The effect of continent-wide ice sheets on atmospheric circulation during MIS 2 led to warming in Beringia and cooling in the western US; less expansive ice sheets during MIS 4 resulted in weaker ice sheet modulation of atmospheric circulation. This led to preservation of MIS 4 moraines in Beringia due to limited MIS 2 glaciation (resulting in a MIS 2/4 moraine sequence) and overriding of MIS 4 moraines – for sites with existing chronologies – in the western United States during MIS 2 (resulting in a MIS 2/6 moraine sequence). Our results highlight how influential ice sheets are for regional climate conditions. Article in Journal/Newspaper Ice Sheet Beringia UBIR Repository (University at Buffalo Institutional Repository) Earth and Planetary Science Letters 534 116115 |
institution |
Open Polar |
collection |
UBIR Repository (University at Buffalo Institutional Repository) |
op_collection_id |
ftunivbuffalo |
language |
English |
topic |
alpine glaciers Laurentide Ice Sheet Marine Isotope Stage 4 Marine Isotope Stage 2 Beringia Western US |
spellingShingle |
alpine glaciers Laurentide Ice Sheet Marine Isotope Stage 4 Marine Isotope Stage 2 Beringia Western US Tulenko, Joseph P. Lofverstrom, Marcus Briner, Jason P. Ice sheet influence on atmospheric circulation explains the patterns of Pleistocene alpine glacier records in North America |
topic_facet |
alpine glaciers Laurentide Ice Sheet Marine Isotope Stage 4 Marine Isotope Stage 2 Beringia Western US |
description |
We explore the hypothesis that the relative size of Pleistocene ice sheets in North America modulated regional climate and alpine glaciation. We compare Pleistocene alpine glacier chronologies across North America with a comprehensive general circulation model using reconstructed ice sheet extents at peak glacial conditions during Marine Isotope Stage (MIS) 2 and MIS 4. The effect of continent-wide ice sheets on atmospheric circulation during MIS 2 led to warming in Beringia and cooling in the western US; less expansive ice sheets during MIS 4 resulted in weaker ice sheet modulation of atmospheric circulation. This led to preservation of MIS 4 moraines in Beringia due to limited MIS 2 glaciation (resulting in a MIS 2/4 moraine sequence) and overriding of MIS 4 moraines – for sites with existing chronologies – in the western United States during MIS 2 (resulting in a MIS 2/6 moraine sequence). Our results highlight how influential ice sheets are for regional climate conditions. |
format |
Article in Journal/Newspaper |
author |
Tulenko, Joseph P. Lofverstrom, Marcus Briner, Jason P. |
author_facet |
Tulenko, Joseph P. Lofverstrom, Marcus Briner, Jason P. |
author_sort |
Tulenko, Joseph P. |
title |
Ice sheet influence on atmospheric circulation explains the patterns of Pleistocene alpine glacier records in North America |
title_short |
Ice sheet influence on atmospheric circulation explains the patterns of Pleistocene alpine glacier records in North America |
title_full |
Ice sheet influence on atmospheric circulation explains the patterns of Pleistocene alpine glacier records in North America |
title_fullStr |
Ice sheet influence on atmospheric circulation explains the patterns of Pleistocene alpine glacier records in North America |
title_full_unstemmed |
Ice sheet influence on atmospheric circulation explains the patterns of Pleistocene alpine glacier records in North America |
title_sort |
ice sheet influence on atmospheric circulation explains the patterns of pleistocene alpine glacier records in north america |
publisher |
Elsevier |
publishDate |
2020 |
url |
http://hdl.handle.net/10477/81387 https://doi.org/10.1016/j.epsl.2020.116115 |
genre |
Ice Sheet Beringia |
genre_facet |
Ice Sheet Beringia |
op_relation |
doi:10.1016/j.epsl.2020.116115 Tulenko, J.P., Lofverstrom, M., & Briner, J.P. (2020). Ice sheet influence on atmospheric circulation explains the patterns of Pleistocene alpine glacier records in North America. Earth and Planetary Science Letters (534)15, 116115. https://doi.org/10.1016/j.epsl.2020.116115 http://hdl.handle.net/10477/81387 |
op_rights |
© 2020 Elsevier B.V. All rights reserved. Elsevier |
op_doi |
https://doi.org/10.1016/j.epsl.2020.116115 |
container_title |
Earth and Planetary Science Letters |
container_volume |
534 |
container_start_page |
116115 |
_version_ |
1766030312552267776 |