Sea Level Trend and Fronts in the South Atlantic Ocean
The understanding of the physical drivers of sea level trend is crucial on global and regional scales. In particular, little is known about the sea level trend in the South Atlantic Ocean in comparison with other parts of the world. In this work, we computed the South Atlantic mean sea level (SAMSL)...
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ftdoajarticles:oai:doaj.org/article:d354e5e0bb8147829a019ff7bcb860c7 2023-05-15T18:20:40+02:00 Sea Level Trend and Fronts in the South Atlantic Ocean Laura A. Ruiz-Etcheverry Martin Saraceno 2020-06-01T00:00:00Z https://doi.org/10.3390/geosciences10060218 https://doaj.org/article/d354e5e0bb8147829a019ff7bcb860c7 EN eng MDPI AG https://www.mdpi.com/2076-3263/10/6/218 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences10060218 2076-3263 https://doaj.org/article/d354e5e0bb8147829a019ff7bcb860c7 Geosciences, Vol 10, Iss 218, p 218 (2020) sea level trend South Atlantic ocean mass steric height satellite altimetry Geology QE1-996.5 article 2020 ftdoajarticles https://doi.org/10.3390/geosciences10060218 2022-12-31T15:18:35Z The understanding of the physical drivers of sea level trend is crucial on global and regional scales. In particular, little is known about the sea level trend in the South Atlantic Ocean in comparison with other parts of the world. In this work, we computed the South Atlantic mean sea level (SAMSL) trend from 25 years of satellite altimetry data, and we analyzed the contributions of steric height (thermosteric and halosteric components) and ocean mass changes for the period 2005–2016 when all the source data used (Argo, GRACE and satellite altimetry) overlap. The SAMSL trend is 2.65 ± 0.24 mm/yr and is mostly explained by ocean mass trend, which is 2.22 ± 0.21 mm/yr. However, between 50° S–33° S, the steric height component constitutes the main contribution in comparison with the ocean mass component. Within that latitudinal band, three regions with trend values higher than the SAMSL trend are observed when considering 25 years of satellite SLA. In the three regions, a southward displacement of the Subtropical, Subantarctic, and Polar Fronts is observed. The southward shift of the fronts is associated with the strengthening and polar shift of westerly winds and contributes to a clear thermosteric trend that translates to the SLA trend observed in those regions. Article in Journal/Newspaper South Atlantic Ocean Directory of Open Access Journals: DOAJ Articles Geosciences 10 6 218 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea level trend South Atlantic ocean mass steric height satellite altimetry Geology QE1-996.5 |
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sea level trend South Atlantic ocean mass steric height satellite altimetry Geology QE1-996.5 Laura A. Ruiz-Etcheverry Martin Saraceno Sea Level Trend and Fronts in the South Atlantic Ocean |
topic_facet |
sea level trend South Atlantic ocean mass steric height satellite altimetry Geology QE1-996.5 |
description |
The understanding of the physical drivers of sea level trend is crucial on global and regional scales. In particular, little is known about the sea level trend in the South Atlantic Ocean in comparison with other parts of the world. In this work, we computed the South Atlantic mean sea level (SAMSL) trend from 25 years of satellite altimetry data, and we analyzed the contributions of steric height (thermosteric and halosteric components) and ocean mass changes for the period 2005–2016 when all the source data used (Argo, GRACE and satellite altimetry) overlap. The SAMSL trend is 2.65 ± 0.24 mm/yr and is mostly explained by ocean mass trend, which is 2.22 ± 0.21 mm/yr. However, between 50° S–33° S, the steric height component constitutes the main contribution in comparison with the ocean mass component. Within that latitudinal band, three regions with trend values higher than the SAMSL trend are observed when considering 25 years of satellite SLA. In the three regions, a southward displacement of the Subtropical, Subantarctic, and Polar Fronts is observed. The southward shift of the fronts is associated with the strengthening and polar shift of westerly winds and contributes to a clear thermosteric trend that translates to the SLA trend observed in those regions. |
format |
Article in Journal/Newspaper |
author |
Laura A. Ruiz-Etcheverry Martin Saraceno |
author_facet |
Laura A. Ruiz-Etcheverry Martin Saraceno |
author_sort |
Laura A. Ruiz-Etcheverry |
title |
Sea Level Trend and Fronts in the South Atlantic Ocean |
title_short |
Sea Level Trend and Fronts in the South Atlantic Ocean |
title_full |
Sea Level Trend and Fronts in the South Atlantic Ocean |
title_fullStr |
Sea Level Trend and Fronts in the South Atlantic Ocean |
title_full_unstemmed |
Sea Level Trend and Fronts in the South Atlantic Ocean |
title_sort |
sea level trend and fronts in the south atlantic ocean |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/geosciences10060218 https://doaj.org/article/d354e5e0bb8147829a019ff7bcb860c7 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Geosciences, Vol 10, Iss 218, p 218 (2020) |
op_relation |
https://www.mdpi.com/2076-3263/10/6/218 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences10060218 2076-3263 https://doaj.org/article/d354e5e0bb8147829a019ff7bcb860c7 |
op_doi |
https://doi.org/10.3390/geosciences10060218 |
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Geosciences |
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10 |
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6 |
container_start_page |
218 |
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1766198317044203520 |