Multidecadal Regime Shifts in North Pacific Subtropical Mode Water Formation in a Coupled Atmosphere‐Ocean‐Sea Ice Model
A regime shift in the formation mechanisms of the North Pacific subtropical mode water (NPSTMW) and its causes were investigated using a 2,000-year-long pre-industrial control simulation of a fully coupled atmosphere-ocean-sea ice model. The volume budget analysis revealed that the air-sea flux and...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Wiley
2022
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Online Access: | https://oceanrep.geomar.de/id/eprint/57105/ https://oceanrep.geomar.de/id/eprint/57105/1/Geophysical%20Research%20Letters%20-%202022%20-%20Kim%20-%20Multidecadal%20Regime%20Shifts%20in%20North%20Pacific%20Subtropical%20Mode%20Water%20Formation%20in.pdf https://oceanrep.geomar.de/id/eprint/57105/2/2022gl099406-sup-0001-supporting%20information%20si-s01.docx https://doi.org/10.1029/2022GL099406 |
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ftoceanrep:oai:oceanrep.geomar.de:57105 2024-02-11T09:55:01+01:00 Multidecadal Regime Shifts in North Pacific Subtropical Mode Water Formation in a Coupled Atmosphere‐Ocean‐Sea Ice Model Kim, Sang‐Yeob Kwon, Young‐Oh Park, Wonsun Lee, Ho Jin 2022-10-01 text https://oceanrep.geomar.de/id/eprint/57105/ https://oceanrep.geomar.de/id/eprint/57105/1/Geophysical%20Research%20Letters%20-%202022%20-%20Kim%20-%20Multidecadal%20Regime%20Shifts%20in%20North%20Pacific%20Subtropical%20Mode%20Water%20Formation%20in.pdf https://oceanrep.geomar.de/id/eprint/57105/2/2022gl099406-sup-0001-supporting%20information%20si-s01.docx https://doi.org/10.1029/2022GL099406 en eng Wiley AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/57105/1/Geophysical%20Research%20Letters%20-%202022%20-%20Kim%20-%20Multidecadal%20Regime%20Shifts%20in%20North%20Pacific%20Subtropical%20Mode%20Water%20Formation%20in.pdf https://oceanrep.geomar.de/id/eprint/57105/2/2022gl099406-sup-0001-supporting%20information%20si-s01.docx Kim, S., Kwon, Y., Park, W. and Lee, H. J. (2022) Multidecadal Regime Shifts in North Pacific Subtropical Mode Water Formation in a Coupled Atmosphere‐Ocean‐Sea Ice Model. Geophysical Research Letters, 49 (19). Art.Nr. e2022GL099406. DOI 10.1029/2022GL099406 <https://doi.org/10.1029/2022GL099406>. doi:10.1029/2022GL099406 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2022 ftoceanrep https://doi.org/10.1029/2022GL099406 2024-01-15T00:25:56Z A regime shift in the formation mechanisms of the North Pacific subtropical mode water (NPSTMW) and its causes were investigated using a 2,000-year-long pre-industrial control simulation of a fully coupled atmosphere-ocean-sea ice model. The volume budget analysis revealed that the air-sea flux and ocean dynamics (OD) were the two primary driving mechanisms for NPSTMW formation, but their relative importance has periodically alternated in multidecadal timescales of approximately 50–70 years. The regime shift of the NPSTMW formation was closely related to the meridional (50 years) and zonal (70 years) movements of the Aleutian Low (AL). When AL shifted to the south or east, it induces the sea surface height anomalies propagating westward from the central North Pacific and preconditions the NPSTMW formation, thus the OD become relatively more important. Key Points: - Driving mechanisms for the North Pacific subtropical mode water formation exhibit a regime shift with a periodicity of about 50–70 years - Multidecadal regime shifts are associated with meridional and zonal shifts in the Aleutian Low (AL) - Position shift of the AL affects the variability of the local air-sea flux and remotely driven oceanic dynamics Article in Journal/Newspaper aleutian low Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Pacific Geophysical Research Letters 49 19 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
A regime shift in the formation mechanisms of the North Pacific subtropical mode water (NPSTMW) and its causes were investigated using a 2,000-year-long pre-industrial control simulation of a fully coupled atmosphere-ocean-sea ice model. The volume budget analysis revealed that the air-sea flux and ocean dynamics (OD) were the two primary driving mechanisms for NPSTMW formation, but their relative importance has periodically alternated in multidecadal timescales of approximately 50–70 years. The regime shift of the NPSTMW formation was closely related to the meridional (50 years) and zonal (70 years) movements of the Aleutian Low (AL). When AL shifted to the south or east, it induces the sea surface height anomalies propagating westward from the central North Pacific and preconditions the NPSTMW formation, thus the OD become relatively more important. Key Points: - Driving mechanisms for the North Pacific subtropical mode water formation exhibit a regime shift with a periodicity of about 50–70 years - Multidecadal regime shifts are associated with meridional and zonal shifts in the Aleutian Low (AL) - Position shift of the AL affects the variability of the local air-sea flux and remotely driven oceanic dynamics |
format |
Article in Journal/Newspaper |
author |
Kim, Sang‐Yeob Kwon, Young‐Oh Park, Wonsun Lee, Ho Jin |
spellingShingle |
Kim, Sang‐Yeob Kwon, Young‐Oh Park, Wonsun Lee, Ho Jin Multidecadal Regime Shifts in North Pacific Subtropical Mode Water Formation in a Coupled Atmosphere‐Ocean‐Sea Ice Model |
author_facet |
Kim, Sang‐Yeob Kwon, Young‐Oh Park, Wonsun Lee, Ho Jin |
author_sort |
Kim, Sang‐Yeob |
title |
Multidecadal Regime Shifts in North Pacific Subtropical Mode Water Formation in a Coupled Atmosphere‐Ocean‐Sea Ice Model |
title_short |
Multidecadal Regime Shifts in North Pacific Subtropical Mode Water Formation in a Coupled Atmosphere‐Ocean‐Sea Ice Model |
title_full |
Multidecadal Regime Shifts in North Pacific Subtropical Mode Water Formation in a Coupled Atmosphere‐Ocean‐Sea Ice Model |
title_fullStr |
Multidecadal Regime Shifts in North Pacific Subtropical Mode Water Formation in a Coupled Atmosphere‐Ocean‐Sea Ice Model |
title_full_unstemmed |
Multidecadal Regime Shifts in North Pacific Subtropical Mode Water Formation in a Coupled Atmosphere‐Ocean‐Sea Ice Model |
title_sort |
multidecadal regime shifts in north pacific subtropical mode water formation in a coupled atmosphere‐ocean‐sea ice model |
publisher |
Wiley |
publishDate |
2022 |
url |
https://oceanrep.geomar.de/id/eprint/57105/ https://oceanrep.geomar.de/id/eprint/57105/1/Geophysical%20Research%20Letters%20-%202022%20-%20Kim%20-%20Multidecadal%20Regime%20Shifts%20in%20North%20Pacific%20Subtropical%20Mode%20Water%20Formation%20in.pdf https://oceanrep.geomar.de/id/eprint/57105/2/2022gl099406-sup-0001-supporting%20information%20si-s01.docx https://doi.org/10.1029/2022GL099406 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
aleutian low Sea ice |
genre_facet |
aleutian low Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/57105/1/Geophysical%20Research%20Letters%20-%202022%20-%20Kim%20-%20Multidecadal%20Regime%20Shifts%20in%20North%20Pacific%20Subtropical%20Mode%20Water%20Formation%20in.pdf https://oceanrep.geomar.de/id/eprint/57105/2/2022gl099406-sup-0001-supporting%20information%20si-s01.docx Kim, S., Kwon, Y., Park, W. and Lee, H. J. (2022) Multidecadal Regime Shifts in North Pacific Subtropical Mode Water Formation in a Coupled Atmosphere‐Ocean‐Sea Ice Model. Geophysical Research Letters, 49 (19). Art.Nr. e2022GL099406. DOI 10.1029/2022GL099406 <https://doi.org/10.1029/2022GL099406>. doi:10.1029/2022GL099406 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2022GL099406 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
19 |
_version_ |
1790593484590153728 |