Seasonality and Dynamics of Atmospheric Teleconnection from the Tropical Indian Ocean and the Western Pacific to West Antarctica
The global impact of the tropical Indian Ocean and the Western Pacific (IOWP) is expected to increase in the future because this area has been continuously warming due to global warming; however, the impact of the IOWP forcing on West Antarctica has not been clearly revealed. Recently, ice loss in W...
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ftmdpi:oai:mdpi.com:/2073-4433/12/7/849/ 2023-08-20T04:02:14+02:00 Seasonality and Dynamics of Atmospheric Teleconnection from the Tropical Indian Ocean and the Western Pacific to West Antarctica Hyun-Ju Lee Emilia-Kyung Jin agris 2021-06-30 application/pdf https://doi.org/10.3390/atmos12070849 EN eng Multidisciplinary Digital Publishing Institute Climatology https://dx.doi.org/10.3390/atmos12070849 https://creativecommons.org/licenses/by/4.0/ Atmosphere; Volume 12; Issue 7; Pages: 849 tropical-Antarctic teleconnection barotropic Rossby wave theory Indian Ocean and Western Pacific forcing climate of West Antarctica Text 2021 ftmdpi https://doi.org/10.3390/atmos12070849 2023-08-01T02:04:56Z The global impact of the tropical Indian Ocean and the Western Pacific (IOWP) is expected to increase in the future because this area has been continuously warming due to global warming; however, the impact of the IOWP forcing on West Antarctica has not been clearly revealed. Recently, ice loss in West Antarctica has been accelerated due to the basal melting of ice shelves. This study examines the characteristics and formation mechanisms of the teleconnection between the IOWP and West Antarctica for each season using the Rossby wave theory. To explicitly understand the role of the background flow in the teleconnection process, we conduct linear baroclinic model (LBM) simulations in which the background flow is initialized differently depending on the season. During JJA/SON, the barotropic Rossby wave generated by the IOWP forcing propagates into the Southern Hemisphere through the climatological northerly wind and arrives in West Antarctica; meanwhile, during DJF/MAM, the wave can hardly penetrate the tropical region. This indicates that during the Austral winter and spring, the IOWP forcing and IOWP-region variabilities such as the Indian Ocean Dipole (IOD) and Indian Ocean Basin (IOB) modes should paid more attention to in order to investigate the ice change in West Antarctica. Text Antarc* Antarctic Antarctica Ice Shelves West Antarctica MDPI Open Access Publishing Antarctic Austral West Antarctica Pacific Indian Atmosphere 12 7 849 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
tropical-Antarctic teleconnection barotropic Rossby wave theory Indian Ocean and Western Pacific forcing climate of West Antarctica |
spellingShingle |
tropical-Antarctic teleconnection barotropic Rossby wave theory Indian Ocean and Western Pacific forcing climate of West Antarctica Hyun-Ju Lee Emilia-Kyung Jin Seasonality and Dynamics of Atmospheric Teleconnection from the Tropical Indian Ocean and the Western Pacific to West Antarctica |
topic_facet |
tropical-Antarctic teleconnection barotropic Rossby wave theory Indian Ocean and Western Pacific forcing climate of West Antarctica |
description |
The global impact of the tropical Indian Ocean and the Western Pacific (IOWP) is expected to increase in the future because this area has been continuously warming due to global warming; however, the impact of the IOWP forcing on West Antarctica has not been clearly revealed. Recently, ice loss in West Antarctica has been accelerated due to the basal melting of ice shelves. This study examines the characteristics and formation mechanisms of the teleconnection between the IOWP and West Antarctica for each season using the Rossby wave theory. To explicitly understand the role of the background flow in the teleconnection process, we conduct linear baroclinic model (LBM) simulations in which the background flow is initialized differently depending on the season. During JJA/SON, the barotropic Rossby wave generated by the IOWP forcing propagates into the Southern Hemisphere through the climatological northerly wind and arrives in West Antarctica; meanwhile, during DJF/MAM, the wave can hardly penetrate the tropical region. This indicates that during the Austral winter and spring, the IOWP forcing and IOWP-region variabilities such as the Indian Ocean Dipole (IOD) and Indian Ocean Basin (IOB) modes should paid more attention to in order to investigate the ice change in West Antarctica. |
format |
Text |
author |
Hyun-Ju Lee Emilia-Kyung Jin |
author_facet |
Hyun-Ju Lee Emilia-Kyung Jin |
author_sort |
Hyun-Ju Lee |
title |
Seasonality and Dynamics of Atmospheric Teleconnection from the Tropical Indian Ocean and the Western Pacific to West Antarctica |
title_short |
Seasonality and Dynamics of Atmospheric Teleconnection from the Tropical Indian Ocean and the Western Pacific to West Antarctica |
title_full |
Seasonality and Dynamics of Atmospheric Teleconnection from the Tropical Indian Ocean and the Western Pacific to West Antarctica |
title_fullStr |
Seasonality and Dynamics of Atmospheric Teleconnection from the Tropical Indian Ocean and the Western Pacific to West Antarctica |
title_full_unstemmed |
Seasonality and Dynamics of Atmospheric Teleconnection from the Tropical Indian Ocean and the Western Pacific to West Antarctica |
title_sort |
seasonality and dynamics of atmospheric teleconnection from the tropical indian ocean and the western pacific to west antarctica |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/atmos12070849 |
op_coverage |
agris |
geographic |
Antarctic Austral West Antarctica Pacific Indian |
geographic_facet |
Antarctic Austral West Antarctica Pacific Indian |
genre |
Antarc* Antarctic Antarctica Ice Shelves West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Ice Shelves West Antarctica |
op_source |
Atmosphere; Volume 12; Issue 7; Pages: 849 |
op_relation |
Climatology https://dx.doi.org/10.3390/atmos12070849 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/atmos12070849 |
container_title |
Atmosphere |
container_volume |
12 |
container_issue |
7 |
container_start_page |
849 |
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1774712610638266368 |