Distorted Pacific–North American teleconnection at the Last Glacial Maximum
The Pacific–North American (PNA) teleconnection is one of the most important climate modes in the present climate condition, and it enables climate variations in the tropical Pacific to exert a significant influence on North America. Here, we show climate simulations in which the PNA teleconnection...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00050356 2023-05-15T16:40:48+02:00 Distorted Pacific–North American teleconnection at the Last Glacial Maximum Hu, Yongyun Xia, Yan Liu, Zhengyu Wang, Yuchen Lu, Zhengyao Wang, Tao 2020-01 electronic https://doi.org/10.5194/cp-16-199-2020 https://noa.gwlb.de/receive/cop_mods_00050356 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049969/cp-16-199-2020.pdf https://cp.copernicus.org/articles/16/199/2020/cp-16-199-2020.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-16-199-2020 https://noa.gwlb.de/receive/cop_mods_00050356 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049969/cp-16-199-2020.pdf https://cp.copernicus.org/articles/16/199/2020/cp-16-199-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/cp-16-199-2020 2022-02-08T22:36:54Z The Pacific–North American (PNA) teleconnection is one of the most important climate modes in the present climate condition, and it enables climate variations in the tropical Pacific to exert a significant influence on North America. Here, we show climate simulations in which the PNA teleconnection was largely distorted or broken at the Last Glacial Maximum (LGM). The distorted PNA is caused by a split in the westerly jet stream, which is ultimately forced by the large, thick Laurentide ice sheet that was present at the LGM. Changes in the jet stream greatly alter the extratropical waveguide, distorting wave propagation from the North Pacific to North America. The distorted PNA suggests that climate variability in the tropical Pacific, notably El Niño–Southern Oscillation (ENSO), would have little direct impact on North American climate at the LGM. Article in Journal/Newspaper Ice Sheet Niedersächsisches Online-Archiv NOA Pacific Climate of the Past 16 1 199 209 |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Hu, Yongyun Xia, Yan Liu, Zhengyu Wang, Yuchen Lu, Zhengyao Wang, Tao Distorted Pacific–North American teleconnection at the Last Glacial Maximum |
topic_facet |
article Verlagsveröffentlichung |
description |
The Pacific–North American (PNA) teleconnection is one of the most important climate modes in the present climate condition, and it enables climate variations in the tropical Pacific to exert a significant influence on North America. Here, we show climate simulations in which the PNA teleconnection was largely distorted or broken at the Last Glacial Maximum (LGM). The distorted PNA is caused by a split in the westerly jet stream, which is ultimately forced by the large, thick Laurentide ice sheet that was present at the LGM. Changes in the jet stream greatly alter the extratropical waveguide, distorting wave propagation from the North Pacific to North America. The distorted PNA suggests that climate variability in the tropical Pacific, notably El Niño–Southern Oscillation (ENSO), would have little direct impact on North American climate at the LGM. |
format |
Article in Journal/Newspaper |
author |
Hu, Yongyun Xia, Yan Liu, Zhengyu Wang, Yuchen Lu, Zhengyao Wang, Tao |
author_facet |
Hu, Yongyun Xia, Yan Liu, Zhengyu Wang, Yuchen Lu, Zhengyao Wang, Tao |
author_sort |
Hu, Yongyun |
title |
Distorted Pacific–North American teleconnection at the Last Glacial Maximum |
title_short |
Distorted Pacific–North American teleconnection at the Last Glacial Maximum |
title_full |
Distorted Pacific–North American teleconnection at the Last Glacial Maximum |
title_fullStr |
Distorted Pacific–North American teleconnection at the Last Glacial Maximum |
title_full_unstemmed |
Distorted Pacific–North American teleconnection at the Last Glacial Maximum |
title_sort |
distorted pacific–north american teleconnection at the last glacial maximum |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/cp-16-199-2020 https://noa.gwlb.de/receive/cop_mods_00050356 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049969/cp-16-199-2020.pdf https://cp.copernicus.org/articles/16/199/2020/cp-16-199-2020.pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-16-199-2020 https://noa.gwlb.de/receive/cop_mods_00050356 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049969/cp-16-199-2020.pdf https://cp.copernicus.org/articles/16/199/2020/cp-16-199-2020.pdf |
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https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
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CC-BY |
op_doi |
https://doi.org/10.5194/cp-16-199-2020 |
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Climate of the Past |
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16 |
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1 |
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199 |
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209 |
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