The Role of Oscillating Southern Hemisphere Westerly Winds: Global Ocean Circulation
In the framework of a sea ice-ocean general circulation model coupled to an energy balance atmospheric model, an intensity oscillation of Southern Hemisphere (SH) westerly winds affects the global ocean circulation via not only the buoyancy-driven teleconnection (BDT) mode but also the Ekman-driven...
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AMER METEOROLOGICAL SOC
2020
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ftponangunivst:oai:oasis.postech.ac.kr:2014.oak/107927 2023-05-15T13:55:14+02:00 The Role of Oscillating Southern Hemisphere Westerly Winds: Global Ocean Circulation Cheon, Woo Geun Kug, Jong-Seong Kug, Jong-Seong 2020-03 https://oasis.postech.ac.kr/handle/2014.oak/107927 https://doi.org/10.1175/JCLI-D-19-0364.1 English eng AMER METEOROLOGICAL SOC JOURNAL OF CLIMATE Meteorology & Atmospheric Sciences 0894-8755 https://oasis.postech.ac.kr/handle/2014.oak/107927 doi:10.1175/JCLI-D-19-0364.1 40499 JOURNAL OF CLIMATE, v.33, no.6, pp.2111 - 2130 000513954900002 2-s2.0-85079877211 ANTARCTIC BOTTOM WATER MERIDIONAL OVERTURNING CIRCULATION ATLANTIC DEEP-WATER CIRCUMPOLAR CURRENT WEDDELL POLYNYA DRAKE PASSAGE CONVECTION TRANSPORT MODEL VARIABILITY Ocean Abyssal circulation Ocean circulation Atmosphere-ocean interaction Boundary currents Article ART 2020 ftponangunivst https://doi.org/10.1175/JCLI-D-19-0364.1 2022-10-20T21:03:13Z In the framework of a sea ice-ocean general circulation model coupled to an energy balance atmospheric model, an intensity oscillation of Southern Hemisphere (SH) westerly winds affects the global ocean circulation via not only the buoyancy-driven teleconnection (BDT) mode but also the Ekman-driven teleconnection (EDT) mode. The BDT mode is activated by the SH air-sea ice-ocean interactions such as polynyas and oceanic convection. The ensuing variation in the Antarctic meridional overturning circulation (MOC) that is indicative of the Antarctic Bottom Water (AABW) formation exerts a significant influence on the abyssal circulation of the globe, particularly the Pacific. This controls the bipolar seesaw balance between deep and bottom waters at the equator. The EDT mode controlled by northward Ekman transport under the oscillating SH westerly winds generates a signal that propagates northward along the upper ocean and passes through the equator. The variation in the western boundary current (WBC) is much stronger in the North Atlantic than in the North Pacific, which appears to be associated with the relatively strong and persistent Mindanao Current (i.e., the southward flowing WBC of the North Pacific tropical gyre). The North Atlantic Deep Water (NADW) formation is controlled by salt advected northward by the North Atlantic WBC. 1 1 N scie scopus Article in Journal/Newspaper Antarc* Antarctic Drake Passage NADW North Atlantic Deep Water North Atlantic Sea ice Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) Antarctic Drake Passage Pacific The Antarctic Weddell Journal of Climate 33 6 2111 2130 |
institution |
Open Polar |
collection |
Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) |
op_collection_id |
ftponangunivst |
language |
English |
topic |
ANTARCTIC BOTTOM WATER MERIDIONAL OVERTURNING CIRCULATION ATLANTIC DEEP-WATER CIRCUMPOLAR CURRENT WEDDELL POLYNYA DRAKE PASSAGE CONVECTION TRANSPORT MODEL VARIABILITY Ocean Abyssal circulation Ocean circulation Atmosphere-ocean interaction Boundary currents |
spellingShingle |
ANTARCTIC BOTTOM WATER MERIDIONAL OVERTURNING CIRCULATION ATLANTIC DEEP-WATER CIRCUMPOLAR CURRENT WEDDELL POLYNYA DRAKE PASSAGE CONVECTION TRANSPORT MODEL VARIABILITY Ocean Abyssal circulation Ocean circulation Atmosphere-ocean interaction Boundary currents Cheon, Woo Geun Kug, Jong-Seong The Role of Oscillating Southern Hemisphere Westerly Winds: Global Ocean Circulation |
topic_facet |
ANTARCTIC BOTTOM WATER MERIDIONAL OVERTURNING CIRCULATION ATLANTIC DEEP-WATER CIRCUMPOLAR CURRENT WEDDELL POLYNYA DRAKE PASSAGE CONVECTION TRANSPORT MODEL VARIABILITY Ocean Abyssal circulation Ocean circulation Atmosphere-ocean interaction Boundary currents |
description |
In the framework of a sea ice-ocean general circulation model coupled to an energy balance atmospheric model, an intensity oscillation of Southern Hemisphere (SH) westerly winds affects the global ocean circulation via not only the buoyancy-driven teleconnection (BDT) mode but also the Ekman-driven teleconnection (EDT) mode. The BDT mode is activated by the SH air-sea ice-ocean interactions such as polynyas and oceanic convection. The ensuing variation in the Antarctic meridional overturning circulation (MOC) that is indicative of the Antarctic Bottom Water (AABW) formation exerts a significant influence on the abyssal circulation of the globe, particularly the Pacific. This controls the bipolar seesaw balance between deep and bottom waters at the equator. The EDT mode controlled by northward Ekman transport under the oscillating SH westerly winds generates a signal that propagates northward along the upper ocean and passes through the equator. The variation in the western boundary current (WBC) is much stronger in the North Atlantic than in the North Pacific, which appears to be associated with the relatively strong and persistent Mindanao Current (i.e., the southward flowing WBC of the North Pacific tropical gyre). The North Atlantic Deep Water (NADW) formation is controlled by salt advected northward by the North Atlantic WBC. 1 1 N scie scopus |
author2 |
Kug, Jong-Seong |
format |
Article in Journal/Newspaper |
author |
Cheon, Woo Geun Kug, Jong-Seong |
author_facet |
Cheon, Woo Geun Kug, Jong-Seong |
author_sort |
Cheon, Woo Geun |
title |
The Role of Oscillating Southern Hemisphere Westerly Winds: Global Ocean Circulation |
title_short |
The Role of Oscillating Southern Hemisphere Westerly Winds: Global Ocean Circulation |
title_full |
The Role of Oscillating Southern Hemisphere Westerly Winds: Global Ocean Circulation |
title_fullStr |
The Role of Oscillating Southern Hemisphere Westerly Winds: Global Ocean Circulation |
title_full_unstemmed |
The Role of Oscillating Southern Hemisphere Westerly Winds: Global Ocean Circulation |
title_sort |
role of oscillating southern hemisphere westerly winds: global ocean circulation |
publisher |
AMER METEOROLOGICAL SOC |
publishDate |
2020 |
url |
https://oasis.postech.ac.kr/handle/2014.oak/107927 https://doi.org/10.1175/JCLI-D-19-0364.1 |
geographic |
Antarctic Drake Passage Pacific The Antarctic Weddell |
geographic_facet |
Antarctic Drake Passage Pacific The Antarctic Weddell |
genre |
Antarc* Antarctic Drake Passage NADW North Atlantic Deep Water North Atlantic Sea ice |
genre_facet |
Antarc* Antarctic Drake Passage NADW North Atlantic Deep Water North Atlantic Sea ice |
op_relation |
JOURNAL OF CLIMATE Meteorology & Atmospheric Sciences 0894-8755 https://oasis.postech.ac.kr/handle/2014.oak/107927 doi:10.1175/JCLI-D-19-0364.1 40499 JOURNAL OF CLIMATE, v.33, no.6, pp.2111 - 2130 000513954900002 2-s2.0-85079877211 |
op_doi |
https://doi.org/10.1175/JCLI-D-19-0364.1 |
container_title |
Journal of Climate |
container_volume |
33 |
container_issue |
6 |
container_start_page |
2111 |
op_container_end_page |
2130 |
_version_ |
1766261512443265024 |