Trends in the deep southern ocean (1958-2010): implications for antarctic bottom water properties and volume export
Regional formation of deep and bottom water masses around the Antarctic continentalshelf is one of the most important processes contributing to variability of the globalmeridional overturning circulation deep cell. Southern Ocean hydrographic data collectedduring the years 1958–2010 indicate that de...
Published in: | Journal of Geophysical Research: Oceans |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2013
|
Subjects: | |
Online Access: | http://repositorio.furg.br/handle/1/5869 https://doi.org/10.1002/jgrc.20303 |
id |
ftunivfurg:oai:repositorio.furg.br:1/5869 |
---|---|
record_format |
openpolar |
spelling |
ftunivfurg:oai:repositorio.furg.br:1/5869 2023-11-12T04:07:01+01:00 Trends in the deep southern ocean (1958-2010): implications for antarctic bottom water properties and volume export Azeneu, Marina do Valle Chagas Pereira, Rodrigo Kerr Duarte Mata, Mauricio Magalhães Garcia, Carlos Alberto Eiras 2013 application/pdf http://repositorio.furg.br/handle/1/5869 https://doi.org/10.1002/jgrc.20303 eng eng AZANEU, Marina do Valle Chagas et al. Trends in the deep southern ocean (1958-2010): implications for antarctic bottom water properties and volume export. Journal of Geophysical Research: Oceans, v.118, n. 9, p.4213-4227, 2013. Disponível em: <https://www.researchgate.net/publication/248703256_Trends_in_the_deep_Southern_Ocean_1958-2010_Implications_for_Antarctic_Bottom_Water_properties_and_volume_export>. Acesso em 22 Jan 2016. 2169-9291 http://repositorio.furg.br/handle/1/5869 doi:10.1002/jgrc.20303 open access article 2013 ftunivfurg https://doi.org/10.1002/jgrc.20303 2023-10-24T21:00:28Z Regional formation of deep and bottom water masses around the Antarctic continentalshelf is one of the most important processes contributing to variability of the globalmeridional overturning circulation deep cell. Southern Ocean hydrographic data collectedduring the years 1958–2010 indicate that dense shelf waters cooled and freshened duringthat period. In the surrounding open ocean, Antarctic Bottom Water (AABW) warmed, withno evidence of salinity change. As a result of source-water property changes, AABWexported from the Southern Ocean to the deep world ocean became lighter over the periodanalyzed. The average rate of density change within the areas that experienced statisticallysignificant change was0.0019 kg m3yr1. For the last 20 years of the analysis, anegative AABW volume anomaly (relative to the half-century average, 1958–2010) wasindicated, possibly due to production of a lighter AABW variety or to changes in formationrates. Over the entire five decades, the upper isopycnal of the AABW layer deepened at arate of8.1 m yr1. Changes in fundamental hydrographic properties such as these canhave important implications for long-term global ocean circulation and climate. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean RI FURG (Repositório da Universidade Federal do Rio Grande) Antarctic Southern Ocean The Antarctic Journal of Geophysical Research: Oceans 118 9 4213 4227 |
institution |
Open Polar |
collection |
RI FURG (Repositório da Universidade Federal do Rio Grande) |
op_collection_id |
ftunivfurg |
language |
English |
description |
Regional formation of deep and bottom water masses around the Antarctic continentalshelf is one of the most important processes contributing to variability of the globalmeridional overturning circulation deep cell. Southern Ocean hydrographic data collectedduring the years 1958–2010 indicate that dense shelf waters cooled and freshened duringthat period. In the surrounding open ocean, Antarctic Bottom Water (AABW) warmed, withno evidence of salinity change. As a result of source-water property changes, AABWexported from the Southern Ocean to the deep world ocean became lighter over the periodanalyzed. The average rate of density change within the areas that experienced statisticallysignificant change was0.0019 kg m3yr1. For the last 20 years of the analysis, anegative AABW volume anomaly (relative to the half-century average, 1958–2010) wasindicated, possibly due to production of a lighter AABW variety or to changes in formationrates. Over the entire five decades, the upper isopycnal of the AABW layer deepened at arate of8.1 m yr1. Changes in fundamental hydrographic properties such as these canhave important implications for long-term global ocean circulation and climate. |
format |
Article in Journal/Newspaper |
author |
Azeneu, Marina do Valle Chagas Pereira, Rodrigo Kerr Duarte Mata, Mauricio Magalhães Garcia, Carlos Alberto Eiras |
spellingShingle |
Azeneu, Marina do Valle Chagas Pereira, Rodrigo Kerr Duarte Mata, Mauricio Magalhães Garcia, Carlos Alberto Eiras Trends in the deep southern ocean (1958-2010): implications for antarctic bottom water properties and volume export |
author_facet |
Azeneu, Marina do Valle Chagas Pereira, Rodrigo Kerr Duarte Mata, Mauricio Magalhães Garcia, Carlos Alberto Eiras |
author_sort |
Azeneu, Marina do Valle Chagas |
title |
Trends in the deep southern ocean (1958-2010): implications for antarctic bottom water properties and volume export |
title_short |
Trends in the deep southern ocean (1958-2010): implications for antarctic bottom water properties and volume export |
title_full |
Trends in the deep southern ocean (1958-2010): implications for antarctic bottom water properties and volume export |
title_fullStr |
Trends in the deep southern ocean (1958-2010): implications for antarctic bottom water properties and volume export |
title_full_unstemmed |
Trends in the deep southern ocean (1958-2010): implications for antarctic bottom water properties and volume export |
title_sort |
trends in the deep southern ocean (1958-2010): implications for antarctic bottom water properties and volume export |
publishDate |
2013 |
url |
http://repositorio.furg.br/handle/1/5869 https://doi.org/10.1002/jgrc.20303 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
AZANEU, Marina do Valle Chagas et al. Trends in the deep southern ocean (1958-2010): implications for antarctic bottom water properties and volume export. Journal of Geophysical Research: Oceans, v.118, n. 9, p.4213-4227, 2013. Disponível em: <https://www.researchgate.net/publication/248703256_Trends_in_the_deep_Southern_Ocean_1958-2010_Implications_for_Antarctic_Bottom_Water_properties_and_volume_export>. Acesso em 22 Jan 2016. 2169-9291 http://repositorio.furg.br/handle/1/5869 doi:10.1002/jgrc.20303 |
op_rights |
open access |
op_doi |
https://doi.org/10.1002/jgrc.20303 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
118 |
container_issue |
9 |
container_start_page |
4213 |
op_container_end_page |
4227 |
_version_ |
1782327881850945536 |