Variations of Mid-Pacific Trough and Their Relations to the Asian-Pacific-North American Climate: Roles of Tropical Sea Surface Temperature and Arctic Sea Ice
The mid-Pacific trough (MPT), occurring in the upper troposphere during boreal summer, acts as an atmospheric bridge connecting the climate variations over Asia, the Pacific, and North America. The first (second) mode of empirical orthogonal function analysis of the MPT, which accounts for 20.3 (13....
Main Authors: | , , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
Columbia University
2017
|
Subjects: | |
Online Access: | https://dx.doi.org/10.7916/d8698fzz https://academiccommons.columbia.edu/doi/10.7916/D8698FZZ |
id |
ftdatacite:10.7916/d8698fzz |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.7916/d8698fzz 2023-05-15T14:59:57+02:00 Variations of Mid-Pacific Trough and Their Relations to the Asian-Pacific-North American Climate: Roles of Tropical Sea Surface Temperature and Arctic Sea Ice Deng, Kaiqiang Yang, S. Ting, Mingfang Hu, Chundi Lu, Mengmeng 2017 https://dx.doi.org/10.7916/d8698fzz https://academiccommons.columbia.edu/doi/10.7916/D8698FZZ unknown Columbia University https://dx.doi.org/10.1175/jcli-d-17-0064.1 Climatic changes Ocean temperature Ocean-atmosphere interaction Text Articles article-journal ScholarlyArticle 2017 ftdatacite https://doi.org/10.7916/d8698fzz https://doi.org/10.1175/jcli-d-17-0064.1 2021-11-05T12:55:41Z The mid-Pacific trough (MPT), occurring in the upper troposphere during boreal summer, acts as an atmospheric bridge connecting the climate variations over Asia, the Pacific, and North America. The first (second) mode of empirical orthogonal function analysis of the MPT, which accounts for 20.3 (13.4) percent of the total variance, reflects a change in its intensity on the southwestern (northeastern) portion of the trough. Both modes are significantly correlated with the variability of tropical Pacific sea surface temperature (SST). Moreover, the first mode is affected by Atlantic SST via planetary waves that originate from the North Atlantic and propagate eastward across the Eurasian continent, and the second mode is influenced by the Arctic sea ice near the Bering Strait by triggering an equatorward wave train over the Northeast Pacific. A stronger MPT shown in the first mode is significantly linked to drier and warmer conditions in the Yangtze Basin, southern Japan, and northern U.S. and a wetter condition in South Asia and northern China, while a stronger MPT shown in the second mode is associated with drier and warmer southwestern U.S. In addition, an intensified MPT (no matter in the southwestern or the northeastern portion) corresponds to more tropical cyclones (TCs) over the western North Pacific (WNP) and less TCs over the eastern Pacific (EP) in summer, which is associated with MPT-induced ascending and descending motions over the WNP and the EP, respectively. Text Arctic Bering Strait North Atlantic Sea ice DataCite Metadata Store (German National Library of Science and Technology) Arctic Bering Strait Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Climatic changes Ocean temperature Ocean-atmosphere interaction |
spellingShingle |
Climatic changes Ocean temperature Ocean-atmosphere interaction Deng, Kaiqiang Yang, S. Ting, Mingfang Hu, Chundi Lu, Mengmeng Variations of Mid-Pacific Trough and Their Relations to the Asian-Pacific-North American Climate: Roles of Tropical Sea Surface Temperature and Arctic Sea Ice |
topic_facet |
Climatic changes Ocean temperature Ocean-atmosphere interaction |
description |
The mid-Pacific trough (MPT), occurring in the upper troposphere during boreal summer, acts as an atmospheric bridge connecting the climate variations over Asia, the Pacific, and North America. The first (second) mode of empirical orthogonal function analysis of the MPT, which accounts for 20.3 (13.4) percent of the total variance, reflects a change in its intensity on the southwestern (northeastern) portion of the trough. Both modes are significantly correlated with the variability of tropical Pacific sea surface temperature (SST). Moreover, the first mode is affected by Atlantic SST via planetary waves that originate from the North Atlantic and propagate eastward across the Eurasian continent, and the second mode is influenced by the Arctic sea ice near the Bering Strait by triggering an equatorward wave train over the Northeast Pacific. A stronger MPT shown in the first mode is significantly linked to drier and warmer conditions in the Yangtze Basin, southern Japan, and northern U.S. and a wetter condition in South Asia and northern China, while a stronger MPT shown in the second mode is associated with drier and warmer southwestern U.S. In addition, an intensified MPT (no matter in the southwestern or the northeastern portion) corresponds to more tropical cyclones (TCs) over the western North Pacific (WNP) and less TCs over the eastern Pacific (EP) in summer, which is associated with MPT-induced ascending and descending motions over the WNP and the EP, respectively. |
format |
Text |
author |
Deng, Kaiqiang Yang, S. Ting, Mingfang Hu, Chundi Lu, Mengmeng |
author_facet |
Deng, Kaiqiang Yang, S. Ting, Mingfang Hu, Chundi Lu, Mengmeng |
author_sort |
Deng, Kaiqiang |
title |
Variations of Mid-Pacific Trough and Their Relations to the Asian-Pacific-North American Climate: Roles of Tropical Sea Surface Temperature and Arctic Sea Ice |
title_short |
Variations of Mid-Pacific Trough and Their Relations to the Asian-Pacific-North American Climate: Roles of Tropical Sea Surface Temperature and Arctic Sea Ice |
title_full |
Variations of Mid-Pacific Trough and Their Relations to the Asian-Pacific-North American Climate: Roles of Tropical Sea Surface Temperature and Arctic Sea Ice |
title_fullStr |
Variations of Mid-Pacific Trough and Their Relations to the Asian-Pacific-North American Climate: Roles of Tropical Sea Surface Temperature and Arctic Sea Ice |
title_full_unstemmed |
Variations of Mid-Pacific Trough and Their Relations to the Asian-Pacific-North American Climate: Roles of Tropical Sea Surface Temperature and Arctic Sea Ice |
title_sort |
variations of mid-pacific trough and their relations to the asian-pacific-north american climate: roles of tropical sea surface temperature and arctic sea ice |
publisher |
Columbia University |
publishDate |
2017 |
url |
https://dx.doi.org/10.7916/d8698fzz https://academiccommons.columbia.edu/doi/10.7916/D8698FZZ |
geographic |
Arctic Bering Strait Pacific |
geographic_facet |
Arctic Bering Strait Pacific |
genre |
Arctic Bering Strait North Atlantic Sea ice |
genre_facet |
Arctic Bering Strait North Atlantic Sea ice |
op_relation |
https://dx.doi.org/10.1175/jcli-d-17-0064.1 |
op_doi |
https://doi.org/10.7916/d8698fzz https://doi.org/10.1175/jcli-d-17-0064.1 |
_version_ |
1766332061259399168 |