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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Copernicus Publications
2020
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fttriple:oai:gotriple.eu:oai:doaj.org/article:0eac6a6de6b34b8f8d73feb0b5dbbc2c 2023-05-15T16:40:47+02:00 Distorted Pacific–North American teleconnection at the Last Glacial Maximum Y. Hu Y. Xia Z. Liu Y. Wang Z. Lu T. Wang 2020-01-01 https://doi.org/10.5194/cp-16-199-2020 https://www.clim-past.net/16/199/2020/cp-16-199-2020.pdf https://doaj.org/article/0eac6a6de6b34b8f8d73feb0b5dbbc2c en eng Copernicus Publications doi:10.5194/cp-16-199-2020 1814-9324 1814-9332 https://www.clim-past.net/16/199/2020/cp-16-199-2020.pdf https://doaj.org/article/0eac6a6de6b34b8f8d73feb0b5dbbc2c undefined Climate of the Past, Vol 16, Pp 199-209 (2020) anthro-bio envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.5194/cp-16-199-2020 2023-01-22T17:50:56Z 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 Unknown Pacific Climate of the Past 16 1 199 209 |
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English |
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anthro-bio envir |
spellingShingle |
anthro-bio envir Y. Hu Y. Xia Z. Liu Y. Wang Z. Lu T. Wang Distorted Pacific–North American teleconnection at the Last Glacial Maximum |
topic_facet |
anthro-bio envir |
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 |
Y. Hu Y. Xia Z. Liu Y. Wang Z. Lu T. Wang |
author_facet |
Y. Hu Y. Xia Z. Liu Y. Wang Z. Lu T. Wang |
author_sort |
Y. Hu |
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://www.clim-past.net/16/199/2020/cp-16-199-2020.pdf https://doaj.org/article/0eac6a6de6b34b8f8d73feb0b5dbbc2c |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Climate of the Past, Vol 16, Pp 199-209 (2020) |
op_relation |
doi:10.5194/cp-16-199-2020 1814-9324 1814-9332 https://www.clim-past.net/16/199/2020/cp-16-199-2020.pdf https://doaj.org/article/0eac6a6de6b34b8f8d73feb0b5dbbc2c |
op_rights |
undefined |
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 |
container_start_page |
199 |
op_container_end_page |
209 |
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1766031205329797120 |