Impact of a possible local wind change on the wave climate in the upper Río de la Plata

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The aim of the present work is to give a quantitative assessment of the change in mean wave parameters in the upper Río de la Plata (RDP) by considering a possible change in local winds. A statistical analysis of the sea and swell in the outer RDP, as well as the computation and analysis of their pr...

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Autores principales: Dragani, W.C., Romero, S.I.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2004
Materias:
Río de la Plata
Wave climate
Wave height trend
Wave hindcasting
Wind change
Approximation theory
Climatology
Refraction
Statistical methods
Wave heights
Wind
littoral environment
sea breeze
wave height
wind forcing
wind wave
wind-wave interaction
Rio de la Plata
South America
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08998418_v24_n9_p1149_Dragani
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paperaa:paper_08998418_v24_n9_p1149_Dragani2023-06-12T16:48:30Z Impact of a possible local wind change on the wave climate in the upper Río de la Plata Int. J. Climatol. 2004;24(9):1149-1157 Dragani, W.C. Romero, S.I. Río de la Plata Wave climate Wave height trend Wave hindcasting Wind change Approximation theory Climatology Refraction Statistical methods Wave climate Wave heights Wind littoral environment sea breeze wave height wind forcing wind wave wind-wave interaction Rio de la Plata South America The aim of the present work is to give a quantitative assessment of the change in mean wave parameters in the upper Río de la Plata (RDP) by considering a possible change in local winds. A statistical analysis of the sea and swell in the outer RDP, as well as the computation and analysis of their propagation and transformation throughout the intermediate and upper regions, reveal that refraction, shoaling and friction effects diminish wave heights by 94.9%. Consequently, the predominant wave climate in the upper RDP could only be described considering wind waves generated locally (sea). The present wave climate (directional wave heights and periods) in the upper RDP is estimated by the hindcasting methodology based on 10-year statistics of winds measured at 'Aeroparque Jorge Newery' meteorological station. A possible future scenario is sketched for which wind frequencies and intensities for the easterly directions are respectively 30% and 10% higher than the present values. The results for the upper RDP show that mean easterly wave heights will increase by 0.12 m (13%) relative to present values (0.90 m) and their frequencies will increase by 30% (from 18.4 to 23.9%), producing larger total heights. Therefore, the coast of Buenos Aires city will be more frequently exposed to wave effects, giving rise to intensified associated littoral processes. The mean period for easterly waves will not change significantly (less than 4%, from 5.3 to 5.5 s). The results obtained are a first approximation to the problem, suggesting that within the upper RDP the wave climate is very sensitive to the predicted change in the wind field. © 2004 Royal Meteorological Society. Fil:Dragani, W.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Romero, S.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08998418_v24_n9_p1149_Dragani
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic Río de la Plata
Wave climate
Wave height trend
Wave hindcasting
Wind change
Approximation theory
Climatology
Refraction
Statistical methods
Wave climate
Wave heights
Wind
littoral environment
sea breeze
wave height
wind forcing
wind wave
wind-wave interaction
Rio de la Plata
South America
spellingShingle Río de la Plata
Wave climate
Wave height trend
Wave hindcasting
Wind change
Approximation theory
Climatology
Refraction
Statistical methods
Wave climate
Wave heights
Wind
littoral environment
sea breeze
wave height
wind forcing
wind wave
wind-wave interaction
Rio de la Plata
South America
Dragani, W.C.
Romero, S.I.
Impact of a possible local wind change on the wave climate in the upper Río de la Plata
topic_facet Río de la Plata
Wave climate
Wave height trend
Wave hindcasting
Wind change
Approximation theory
Climatology
Refraction
Statistical methods
Wave climate
Wave heights
Wind
littoral environment
sea breeze
wave height
wind forcing
wind wave
wind-wave interaction
Rio de la Plata
South America
description The aim of the present work is to give a quantitative assessment of the change in mean wave parameters in the upper Río de la Plata (RDP) by considering a possible change in local winds. A statistical analysis of the sea and swell in the outer RDP, as well as the computation and analysis of their propagation and transformation throughout the intermediate and upper regions, reveal that refraction, shoaling and friction effects diminish wave heights by 94.9%. Consequently, the predominant wave climate in the upper RDP could only be described considering wind waves generated locally (sea). The present wave climate (directional wave heights and periods) in the upper RDP is estimated by the hindcasting methodology based on 10-year statistics of winds measured at 'Aeroparque Jorge Newery' meteorological station. A possible future scenario is sketched for which wind frequencies and intensities for the easterly directions are respectively 30% and 10% higher than the present values. The results for the upper RDP show that mean easterly wave heights will increase by 0.12 m (13%) relative to present values (0.90 m) and their frequencies will increase by 30% (from 18.4 to 23.9%), producing larger total heights. Therefore, the coast of Buenos Aires city will be more frequently exposed to wave effects, giving rise to intensified associated littoral processes. The mean period for easterly waves will not change significantly (less than 4%, from 5.3 to 5.5 s). The results obtained are a first approximation to the problem, suggesting that within the upper RDP the wave climate is very sensitive to the predicted change in the wind field. © 2004 Royal Meteorological Society.
format Artículo
Artículo
publishedVersion
author Dragani, W.C.
Romero, S.I.
author_facet Dragani, W.C.
Romero, S.I.
author_sort Dragani, W.C.
title Impact of a possible local wind change on the wave climate in the upper Río de la Plata
title_short Impact of a possible local wind change on the wave climate in the upper Río de la Plata
title_full Impact of a possible local wind change on the wave climate in the upper Río de la Plata
title_fullStr Impact of a possible local wind change on the wave climate in the upper Río de la Plata
title_full_unstemmed Impact of a possible local wind change on the wave climate in the upper Río de la Plata
title_sort impact of a possible local wind change on the wave climate in the upper río de la plata
publishDate 2004
url http://hdl.handle.net/20.500.12110/paper_08998418_v24_n9_p1149_Dragani
work_keys_str_mv AT draganiwc impactofapossiblelocalwindchangeonthewaveclimateintheupperriodelaplata
AT romerosi impactofapossiblelocalwindchangeonthewaveclimateintheupperriodelaplata
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