Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Anais da Academia Brasileira de Ciências (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000201110 |
Resumo: | 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. |
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Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice meltingSea Ice MeltingFreshwater InputTeleconnectionsOceanic BridgeOceanographyAbstract 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.Academia Brasileira de Ciências2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000201110Anais da Academia Brasileira de Ciências v.94 suppl.1 2022reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-3765202220210800info:eu-repo/semantics/openAccessTORRES,ANA LAURA R.PARISE,CLAUDIA K.PEZZI,LUCIANO P.QUEIROZ,MICHELLY G. DOS SANTOSMACHADO,ADILSON M.B.CERVEIRA,GABRIEL S.CORREIA,GUSTAVO S.BARBOSA,WESLEY L.LIMA,LEONARDO G. DESUTIL,UESLEI A.eng2022-04-13T00:00:00Zoai:scielo:S0001-37652022000201110Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2022-04-13T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false |
dc.title.none.fl_str_mv |
Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting |
title |
Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting |
spellingShingle |
Lagged response of Tropical Atlantic Ocean to cold and fresh water pulse from Antarctic sea ice melting TORRES,ANA LAURA R. Sea Ice Melting Freshwater Input Teleconnections Oceanic Bridge Oceanography |
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 |
author |
TORRES,ANA LAURA R. |
author_facet |
TORRES,ANA LAURA R. PARISE,CLAUDIA K. PEZZI,LUCIANO P. QUEIROZ,MICHELLY G. DOS SANTOS MACHADO,ADILSON M.B. CERVEIRA,GABRIEL S. CORREIA,GUSTAVO S. BARBOSA,WESLEY L. LIMA,LEONARDO G. DE SUTIL,UESLEI A. |
author_role |
author |
author2 |
PARISE,CLAUDIA K. PEZZI,LUCIANO P. QUEIROZ,MICHELLY G. DOS SANTOS MACHADO,ADILSON M.B. CERVEIRA,GABRIEL S. CORREIA,GUSTAVO S. BARBOSA,WESLEY L. LIMA,LEONARDO G. DE SUTIL,UESLEI A. |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
TORRES,ANA LAURA R. PARISE,CLAUDIA K. PEZZI,LUCIANO P. QUEIROZ,MICHELLY G. DOS SANTOS MACHADO,ADILSON M.B. CERVEIRA,GABRIEL S. CORREIA,GUSTAVO S. BARBOSA,WESLEY L. LIMA,LEONARDO G. DE SUTIL,UESLEI A. |
dc.subject.por.fl_str_mv |
Sea Ice Melting Freshwater Input Teleconnections Oceanic Bridge Oceanography |
topic |
Sea Ice Melting Freshwater Input Teleconnections Oceanic Bridge Oceanography |
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. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000201110 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000201110 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0001-3765202220210800 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
dc.source.none.fl_str_mv |
Anais da Academia Brasileira de Ciências v.94 suppl.1 2022 reponame:Anais da Academia Brasileira de Ciências (Online) instname:Academia Brasileira de Ciências (ABC) instacron:ABC |
instname_str |
Academia Brasileira de Ciências (ABC) |
instacron_str |
ABC |
institution |
ABC |
reponame_str |
Anais da Academia Brasileira de Ciências (Online) |
collection |
Anais da Academia Brasileira de Ciências (Online) |
repository.name.fl_str_mv |
Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC) |
repository.mail.fl_str_mv |
||aabc@abc.org.br |
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1754302871682154496 |