Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting
Abstract The formation of dense water masses at polar regions has been largely influenced by climate changes arising from global warming. In this context, based on ensemble simulations with a coupled model we evaluate the meridional shift of a climate signal (i.e., a cold and fresh water input pulse...
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ftdoajarticles:oai:doaj.org/article:2485439c2886417fa371aeab81847a66 2023-05-15T14:06:28+02:00 Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting ANA LAURA R. TORRES CLAUDIA K. PARISE LUCIANO P. PEZZI MICHELLY G. DOS SANTOS QUEIROZ ADILSON M.B. MACHADO GABRIEL S. CERVEIRA GUSTAVO S. CORREIA WESLEY L. BARBOSA LEONARDO G. DE LIMA UESLEI A. SUTIL 2021-04-01T00:00:00Z https://doi.org/10.1590/0001-3765202220210800 https://doaj.org/article/2485439c2886417fa371aeab81847a66 EN eng Academia Brasileira de Ciências http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000201110&tlng=en https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202220210800 https://doaj.org/article/2485439c2886417fa371aeab81847a66 Anais da Academia Brasileira de Ciências, Vol 94, Iss suppl 1 (2021) Sea Ice Melting Freshwater Input Teleconnections Oceanic Bridge Oceanography Science Q article 2021 ftdoajarticles https://doi.org/10.1590/0001-3765202220210800 2022-12-31T12:11:29Z Abstract The formation of dense water masses at polar regions has been largely influenced by climate changes arising from global warming. In this context, based on ensemble simulations with a coupled model we evaluate the meridional shift of a climate signal (i.e., a cold and fresh water input pulse generated from melting of positive Antarctic sea ice (ASI) extremes) towards the Tropical Atlantic Ocean (TAO). This oceanic signal propagated from Southern Ocean towards the equator through the upper layers due to an increase in its buoyance. Its northward shift has given by the Subantarctic Mode Water (SAMW) and Antarctic Intermediate Water (AAIW) flows, that inject cold and fresh mode/intermediate waters from into subtropical basin. The signal has reached low latitudes through the equatorial upwelling and spreads out southwards, through the upper branch of southern subtropical gyre. We concluded that 10 years of coupled simulations was enough time to propagate the climate signal generated by ASI positive extremes melting, which reached TOA around 2 year later. The oceanic connection between Southern Ocean and TAO is indeed established within the timescale analyzed in the study (10 years). Nonetheless, the period needed to completely dissipate the disturbance generated from ASI seems to be longer. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean Directory of Open Access Journals: DOAJ Articles Antarctic Southern Ocean Anais da Academia Brasileira de Ciências 94 suppl 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Sea Ice Melting Freshwater Input Teleconnections Oceanic Bridge Oceanography Science Q |
spellingShingle |
Sea Ice Melting Freshwater Input Teleconnections Oceanic Bridge Oceanography Science Q ANA LAURA R. TORRES CLAUDIA K. PARISE LUCIANO P. PEZZI MICHELLY G. DOS SANTOS QUEIROZ ADILSON M.B. MACHADO GABRIEL S. CERVEIRA GUSTAVO S. CORREIA WESLEY L. BARBOSA LEONARDO G. DE LIMA UESLEI A. SUTIL Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting |
topic_facet |
Sea Ice Melting Freshwater Input Teleconnections Oceanic Bridge Oceanography Science Q |
description |
Abstract The formation of dense water masses at polar regions has been largely influenced by climate changes arising from global warming. In this context, based on ensemble simulations with a coupled model we evaluate the meridional shift of a climate signal (i.e., a cold and fresh water input pulse generated from melting of positive Antarctic sea ice (ASI) extremes) towards the Tropical Atlantic Ocean (TAO). This oceanic signal propagated from Southern Ocean towards the equator through the upper layers due to an increase in its buoyance. Its northward shift has given by the Subantarctic Mode Water (SAMW) and Antarctic Intermediate Water (AAIW) flows, that inject cold and fresh mode/intermediate waters from into subtropical basin. The signal has reached low latitudes through the equatorial upwelling and spreads out southwards, through the upper branch of southern subtropical gyre. We concluded that 10 years of coupled simulations was enough time to propagate the climate signal generated by ASI positive extremes melting, which reached TOA around 2 year later. The oceanic connection between Southern Ocean and TAO is indeed established within the timescale analyzed in the study (10 years). Nonetheless, the period needed to completely dissipate the disturbance generated from ASI seems to be longer. |
format |
Article in Journal/Newspaper |
author |
ANA LAURA R. TORRES CLAUDIA K. PARISE LUCIANO P. PEZZI MICHELLY G. DOS SANTOS QUEIROZ ADILSON M.B. MACHADO GABRIEL S. CERVEIRA GUSTAVO S. CORREIA WESLEY L. BARBOSA LEONARDO G. DE LIMA UESLEI A. SUTIL |
author_facet |
ANA LAURA R. TORRES CLAUDIA K. PARISE LUCIANO P. PEZZI MICHELLY G. DOS SANTOS QUEIROZ ADILSON M.B. MACHADO GABRIEL S. CERVEIRA GUSTAVO S. CORREIA WESLEY L. BARBOSA LEONARDO G. DE LIMA UESLEI A. SUTIL |
author_sort |
ANA LAURA R. TORRES |
title |
Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting |
title_short |
Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting |
title_full |
Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting |
title_fullStr |
Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting |
title_full_unstemmed |
Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting |
title_sort |
lagged response of tropical atlantic ocean to cold and fresh water pulse from antarctic sea ice melting |
publisher |
Academia Brasileira de Ciências |
publishDate |
2021 |
url |
https://doi.org/10.1590/0001-3765202220210800 https://doaj.org/article/2485439c2886417fa371aeab81847a66 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_source |
Anais da Academia Brasileira de Ciências, Vol 94, Iss suppl 1 (2021) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000201110&tlng=en https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202220210800 https://doaj.org/article/2485439c2886417fa371aeab81847a66 |
op_doi |
https://doi.org/10.1590/0001-3765202220210800 |
container_title |
Anais da Academia Brasileira de Ciências |
container_volume |
94 |
container_issue |
suppl 1 |
_version_ |
1766278179420372992 |