A case study of the 9 August 1988 South Atlantic storm: Numerical simulations of the wave activity
During 9-11 August 1988, a cyclone developed over Uruguay in the lee of the Andes Mountains and moved over the South Atlantic Ocean, where it redeveloped into an intense storm. This storm was responsible for unusual wave activity along the Brazilian shoreline from 22° to 32°S. The Brazilian news med...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Other/Unknown Material |
Language: | English |
Published: |
2014
|
Subjects: | |
Online Access: | http://acervodigital.unesp.br/handle/11449/64749 http://hdl.handle.net/11449/64749 https://doi.org/10.1175/1520-0434(1996)011 |
id |
ftunivesp:oai:acervodigital.unesp.br:11449/64749 |
---|---|
record_format |
openpolar |
spelling |
ftunivesp:oai:acervodigital.unesp.br:11449/64749 2023-05-15T18:21:15+02:00 A case study of the 9 August 1988 South Atlantic storm: Numerical simulations of the wave activity Innocentini, Valdir Caetano Neto, Ernesto dos Santos Universidade Estadual Paulista (UNESP) 2014-05-27T11:18:04Z http://acervodigital.unesp.br/handle/11449/64749 http://hdl.handle.net/11449/64749 https://doi.org/10.1175/1520-0434(1996)011 eng eng Weather and Forecasting Weather and Forecasting, v. 11, n. 1, p. 78-88, 1996. 0882-8156 http://hdl.handle.net/11449/64749 http://acervodigital.unesp.br/handle/11449/64749 10.1175/1520-0434(1996)011 0078:ACSOTA>2.0.CO;2 WOS:A1996UA76900007 2-s2.0-0029656828.pdf 2-s2.0-0029656828 http://dx.doi.org/10.1175/1520-0434(1996)011 0078:ACSOTA>2.0.CO;2 info:eu-repo/semantics/openAccess numerical simulations storms wave forecasting Atlantic (South) Simulation-Numerical South Atlantic Waves outro 2014 ftunivesp https://doi.org/10.1175/1520-0434(1996)011 2021-07-18T08:38:18Z During 9-11 August 1988, a cyclone developed over Uruguay in the lee of the Andes Mountains and moved over the South Atlantic Ocean, where it redeveloped into an intense storm. This storm was responsible for unusual wave activity along the Brazilian shoreline from 22° to 32°S. The Brazilian news media reported the loss of at least one life, waves of 3 m and higher, and the disappearance of a drainage pipe, which weighed 8000 kg, off the shores of Rio de Janeiro. In this paper, the evolution of this intense storm and the associated ocean wave response is studied through European Centre for Medium-Range Weather Forecasts analyses, a hydrostatic limited-area meteorological model, and a second-generation prognostic wave model. The atmospheric model results indicated the presence of a long-lived and large fetch with surface wind velocities higher than 12 m s -1 directed toward the coast. Some areas with velocities of 20 m s -1 were embedded in the fetch. The wave model forced by this wind field was able to simulate waves with a significant height of 8 m far from the coast and about 4 m in regions very close to the Brazilian coast in agreement with the occurrence reported at Rio de Janeiro. The swell propagation toward the coast of Rio de Janeiro was obstructed by a northeastward 10-m wind during the first 24-h period of the model's integration. During the second 24-h period, the fetch was still large and strong, but the obstacle was removed by a counterclockwise rotation of wind direction favoring the swell and windsea propagation toward the Rio de Janeiro coast. Other/Unknown Material South Atlantic Ocean Universidade Estadual Paulista São Paulo: Acervo Digital da UNESP / São Paulo State University Uruguay |
institution |
Open Polar |
collection |
Universidade Estadual Paulista São Paulo: Acervo Digital da UNESP / São Paulo State University |
op_collection_id |
ftunivesp |
language |
English |
topic |
numerical simulations storms wave forecasting Atlantic (South) Simulation-Numerical South Atlantic Waves |
spellingShingle |
numerical simulations storms wave forecasting Atlantic (South) Simulation-Numerical South Atlantic Waves Innocentini, Valdir Caetano Neto, Ernesto dos Santos A case study of the 9 August 1988 South Atlantic storm: Numerical simulations of the wave activity |
topic_facet |
numerical simulations storms wave forecasting Atlantic (South) Simulation-Numerical South Atlantic Waves |
description |
During 9-11 August 1988, a cyclone developed over Uruguay in the lee of the Andes Mountains and moved over the South Atlantic Ocean, where it redeveloped into an intense storm. This storm was responsible for unusual wave activity along the Brazilian shoreline from 22° to 32°S. The Brazilian news media reported the loss of at least one life, waves of 3 m and higher, and the disappearance of a drainage pipe, which weighed 8000 kg, off the shores of Rio de Janeiro. In this paper, the evolution of this intense storm and the associated ocean wave response is studied through European Centre for Medium-Range Weather Forecasts analyses, a hydrostatic limited-area meteorological model, and a second-generation prognostic wave model. The atmospheric model results indicated the presence of a long-lived and large fetch with surface wind velocities higher than 12 m s -1 directed toward the coast. Some areas with velocities of 20 m s -1 were embedded in the fetch. The wave model forced by this wind field was able to simulate waves with a significant height of 8 m far from the coast and about 4 m in regions very close to the Brazilian coast in agreement with the occurrence reported at Rio de Janeiro. The swell propagation toward the coast of Rio de Janeiro was obstructed by a northeastward 10-m wind during the first 24-h period of the model's integration. During the second 24-h period, the fetch was still large and strong, but the obstacle was removed by a counterclockwise rotation of wind direction favoring the swell and windsea propagation toward the Rio de Janeiro coast. |
author2 |
Universidade Estadual Paulista (UNESP) |
format |
Other/Unknown Material |
author |
Innocentini, Valdir Caetano Neto, Ernesto dos Santos |
author_facet |
Innocentini, Valdir Caetano Neto, Ernesto dos Santos |
author_sort |
Innocentini, Valdir |
title |
A case study of the 9 August 1988 South Atlantic storm: Numerical simulations of the wave activity |
title_short |
A case study of the 9 August 1988 South Atlantic storm: Numerical simulations of the wave activity |
title_full |
A case study of the 9 August 1988 South Atlantic storm: Numerical simulations of the wave activity |
title_fullStr |
A case study of the 9 August 1988 South Atlantic storm: Numerical simulations of the wave activity |
title_full_unstemmed |
A case study of the 9 August 1988 South Atlantic storm: Numerical simulations of the wave activity |
title_sort |
case study of the 9 august 1988 south atlantic storm: numerical simulations of the wave activity |
publishDate |
2014 |
url |
http://acervodigital.unesp.br/handle/11449/64749 http://hdl.handle.net/11449/64749 https://doi.org/10.1175/1520-0434(1996)011 |
geographic |
Uruguay |
geographic_facet |
Uruguay |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
Weather and Forecasting Weather and Forecasting, v. 11, n. 1, p. 78-88, 1996. 0882-8156 http://hdl.handle.net/11449/64749 http://acervodigital.unesp.br/handle/11449/64749 10.1175/1520-0434(1996)011 0078:ACSOTA>2.0.CO;2 WOS:A1996UA76900007 2-s2.0-0029656828.pdf 2-s2.0-0029656828 http://dx.doi.org/10.1175/1520-0434(1996)011 0078:ACSOTA>2.0.CO;2 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1175/1520-0434(1996)011 |
_version_ |
1766200413440180224 |