Response of the Pacific Sector of the Southern Ocean to wind stress variability from 1995 to 2017
rifter, satellite, expendable bathythermograph (XBT), and Argo float data are used to study the response of the Pacific Sector of the Southern Ocean (PSSO) to the wind stress field in the period 1995–2017, in terms of eddy field, water mass transport, and heat fluxes at large and regional scales. In...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | http://hdl.handle.net/11566/288140 https://doi.org/10.1029/2019JC015696 |
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ftupmarcheiris:oai:iris.univpm.it:11566/288140 2024-04-21T07:47:07+00:00 Response of the Pacific Sector of the Southern Ocean to wind stress variability from 1995 to 2017 Menna M. Cotroneo Y. Falco P. Zambianchi E. Di Lemma R. Poulain P. ‐M. Fusco G. Budillon G. Menna, M. Cotroneo, Y. Falco, P. Zambianchi, E. Di Lemma, R. Poulain, P. ‐M. Fusco, G. Budillon, G. 2020 ELETTRONICO http://hdl.handle.net/11566/288140 https://doi.org/10.1029/2019JC015696 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000612077200057 volume:125 firstpage:1 lastpage:18 numberofpages:18 journal:JOURNAL OF GEOPHYSICAL RESEARCH. OCEANS http://hdl.handle.net/11566/288140 doi:10.1029/2019JC015696 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85096434625 info:eu-repo/semantics/article 2020 ftupmarcheiris https://doi.org/10.1029/2019JC015696 2024-03-28T01:45:55Z rifter, satellite, expendable bathythermograph (XBT), and Argo float data are used to study the response of the Pacific Sector of the Southern Ocean (PSSO) to the wind stress field in the period 1995–2017, in terms of eddy field, water mass transport, and heat fluxes at large and regional scales. Increasing wind stress over the PSSO in those two decades led to a growth of the Eddy Kinetic Energy (EKE) in the region of the Antarctic Circumpolar Current (ACC). Increases of the EKE occur with delays of 1–4 years with respect to peaks in the zonal component of the wind stress. The persistent ACC meander located south of New Zealand (between 150°E and 180°W and 50°S to 66°S) responds to the interannual wind variations earlier than the entire ACC branch in the PSSO. In the same area, an estimate of the ACC transport based on in situ data shows interannual variability but no significant decadal trend over the study period. The effects of the EKE variability on the meridional eddy heat fluxes are significant on interannual scales. The strengthening of the EKE field leads to a local increase in the poleward meridional eddy heat fluxes in the PSSO, especially in the ACC band. The weakening of the EKE field defines an area of equatorward meridional eddy heat fluxes in the middle of the PSSO (south of 40°S, between 130°W and 160°W) and prevalent poleward fluxes in the further western and eastern regions. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Università Politecnica delle Marche: IRIS Journal of Geophysical Research: Oceans 125 10 |
institution |
Open Polar |
collection |
Università Politecnica delle Marche: IRIS |
op_collection_id |
ftupmarcheiris |
language |
English |
description |
rifter, satellite, expendable bathythermograph (XBT), and Argo float data are used to study the response of the Pacific Sector of the Southern Ocean (PSSO) to the wind stress field in the period 1995–2017, in terms of eddy field, water mass transport, and heat fluxes at large and regional scales. Increasing wind stress over the PSSO in those two decades led to a growth of the Eddy Kinetic Energy (EKE) in the region of the Antarctic Circumpolar Current (ACC). Increases of the EKE occur with delays of 1–4 years with respect to peaks in the zonal component of the wind stress. The persistent ACC meander located south of New Zealand (between 150°E and 180°W and 50°S to 66°S) responds to the interannual wind variations earlier than the entire ACC branch in the PSSO. In the same area, an estimate of the ACC transport based on in situ data shows interannual variability but no significant decadal trend over the study period. The effects of the EKE variability on the meridional eddy heat fluxes are significant on interannual scales. The strengthening of the EKE field leads to a local increase in the poleward meridional eddy heat fluxes in the PSSO, especially in the ACC band. The weakening of the EKE field defines an area of equatorward meridional eddy heat fluxes in the middle of the PSSO (south of 40°S, between 130°W and 160°W) and prevalent poleward fluxes in the further western and eastern regions. |
author2 |
Menna, M. Cotroneo, Y. Falco, P. Zambianchi, E. Di Lemma, R. Poulain, P. ‐M. Fusco, G. Budillon, G. |
format |
Article in Journal/Newspaper |
author |
Menna M. Cotroneo Y. Falco P. Zambianchi E. Di Lemma R. Poulain P. ‐M. Fusco G. Budillon G. |
spellingShingle |
Menna M. Cotroneo Y. Falco P. Zambianchi E. Di Lemma R. Poulain P. ‐M. Fusco G. Budillon G. Response of the Pacific Sector of the Southern Ocean to wind stress variability from 1995 to 2017 |
author_facet |
Menna M. Cotroneo Y. Falco P. Zambianchi E. Di Lemma R. Poulain P. ‐M. Fusco G. Budillon G. |
author_sort |
Menna M. |
title |
Response of the Pacific Sector of the Southern Ocean to wind stress variability from 1995 to 2017 |
title_short |
Response of the Pacific Sector of the Southern Ocean to wind stress variability from 1995 to 2017 |
title_full |
Response of the Pacific Sector of the Southern Ocean to wind stress variability from 1995 to 2017 |
title_fullStr |
Response of the Pacific Sector of the Southern Ocean to wind stress variability from 1995 to 2017 |
title_full_unstemmed |
Response of the Pacific Sector of the Southern Ocean to wind stress variability from 1995 to 2017 |
title_sort |
response of the pacific sector of the southern ocean to wind stress variability from 1995 to 2017 |
publishDate |
2020 |
url |
http://hdl.handle.net/11566/288140 https://doi.org/10.1029/2019JC015696 |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000612077200057 volume:125 firstpage:1 lastpage:18 numberofpages:18 journal:JOURNAL OF GEOPHYSICAL RESEARCH. OCEANS http://hdl.handle.net/11566/288140 doi:10.1029/2019JC015696 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85096434625 |
op_doi |
https://doi.org/10.1029/2019JC015696 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
125 |
container_issue |
10 |
_version_ |
1796945516316065792 |