Large-scale atmospheric response to warm SST anomalies in the North Pacific in the 2021-22 winter ...
<!--!introduction!--> Sea surface temperatures (SST) in the North Pacific were extremely warm in the 2021-22 winter associated with the negative phase of the Pacific Decadal Oscillation (PDO). We investigate the large-scale atmospheric responses to the warm SST anomalies through ensemble time-...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
GFZ German Research Centre for Geosciences
2023
|
Subjects: | |
Online Access: | https://dx.doi.org/10.57757/iugg23-0277 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016188 |
id |
ftdatacite:10.57757/iugg23-0277 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.57757/iugg23-0277 2023-06-11T04:09:31+02:00 Large-scale atmospheric response to warm SST anomalies in the North Pacific in the 2021-22 winter ... Nishii, Kazuaki Taguchi, Bunmei Nakamura, Hisashi 2023 https://dx.doi.org/10.57757/iugg23-0277 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016188 unknown GFZ German Research Centre for Geosciences Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Oral ConferencePaper Article 2023 ftdatacite https://doi.org/10.57757/iugg23-0277 2023-05-02T10:28:31Z <!--!introduction!--> Sea surface temperatures (SST) in the North Pacific were extremely warm in the 2021-22 winter associated with the negative phase of the Pacific Decadal Oscillation (PDO). We investigate the large-scale atmospheric responses to the warm SST anomalies through ensemble time-slice experiments of an atmospheric general circulation model (AGCM) with two different horizontal resolution settings: 100 km and 50 km. In both the 100-km and 50-km experiments, anticyclonic responses in the winter-mean 500-hPa geopotential height fields are found over the North Pacific. The anticyclonic response is stronger in the 50-km AGCM, and its center is located slightly to the west of that obtained in the 100-km AGCM. Blocking frequency over the North Pacific in the 50-km AGCM is significantly increased under the influence of the warm SST anomalies, which may cool the lower stratosphere in the Arctic through suppressing upward planetary-wave propagation from the troposphere. Such increased blocking and ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... Article in Journal/Newspaper Arctic DataCite Metadata Store (German National Library of Science and Technology) Arctic Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
description |
<!--!introduction!--> Sea surface temperatures (SST) in the North Pacific were extremely warm in the 2021-22 winter associated with the negative phase of the Pacific Decadal Oscillation (PDO). We investigate the large-scale atmospheric responses to the warm SST anomalies through ensemble time-slice experiments of an atmospheric general circulation model (AGCM) with two different horizontal resolution settings: 100 km and 50 km. In both the 100-km and 50-km experiments, anticyclonic responses in the winter-mean 500-hPa geopotential height fields are found over the North Pacific. The anticyclonic response is stronger in the 50-km AGCM, and its center is located slightly to the west of that obtained in the 100-km AGCM. Blocking frequency over the North Pacific in the 50-km AGCM is significantly increased under the influence of the warm SST anomalies, which may cool the lower stratosphere in the Arctic through suppressing upward planetary-wave propagation from the troposphere. Such increased blocking and ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
format |
Article in Journal/Newspaper |
author |
Nishii, Kazuaki Taguchi, Bunmei Nakamura, Hisashi |
spellingShingle |
Nishii, Kazuaki Taguchi, Bunmei Nakamura, Hisashi Large-scale atmospheric response to warm SST anomalies in the North Pacific in the 2021-22 winter ... |
author_facet |
Nishii, Kazuaki Taguchi, Bunmei Nakamura, Hisashi |
author_sort |
Nishii, Kazuaki |
title |
Large-scale atmospheric response to warm SST anomalies in the North Pacific in the 2021-22 winter ... |
title_short |
Large-scale atmospheric response to warm SST anomalies in the North Pacific in the 2021-22 winter ... |
title_full |
Large-scale atmospheric response to warm SST anomalies in the North Pacific in the 2021-22 winter ... |
title_fullStr |
Large-scale atmospheric response to warm SST anomalies in the North Pacific in the 2021-22 winter ... |
title_full_unstemmed |
Large-scale atmospheric response to warm SST anomalies in the North Pacific in the 2021-22 winter ... |
title_sort |
large-scale atmospheric response to warm sst anomalies in the north pacific in the 2021-22 winter ... |
publisher |
GFZ German Research Centre for Geosciences |
publishDate |
2023 |
url |
https://dx.doi.org/10.57757/iugg23-0277 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016188 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic |
genre_facet |
Arctic |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.57757/iugg23-0277 |
_version_ |
1768383443311263744 |