Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil.
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da Universidade Federal do Ceará (UFC) |
Texto Completo: | http://www.repositorio.ufc.br/handle/riufc/68726 |
Resumo: | This paper investigates the spatiotemporal variability of Contiguous ExtremePrecipitation Events (CEPE) related to Madden-Julian Oscillation (MJO) activ-ity during the pre-wet season and wet season in northern Northeast Brazil for30 years (1979–2010). Inherent differences in rainy season regimes are associ-ated with northern Northeast Brazil precipitation systems; these are isolatedduring pre-wet and wet season and analyse the intensity and the spatial areacovered by the CEPE. A daily index of MJO activity and its life cycle were usedto identify activity phases during heavy rainfall events. Composite analysis wasperformed for days with CEPE during the most frequent MJO phases in thepre-wet and wet seasons. The analysis shows the influence of the MJO onthe occurrence of CEPE in northern Northeast Brazil. In the pre-wet season,the MJO phases 8-1-2 affect the occurrence of heavy rainfall events,modifying the atmospheric circulation and water vapour transport over north-ern South America. Indications of Rossby wave propagation over the SouthPacific associated with MJO were found, suggesting tropic-extratropic tele-connection during occurrences of CEPE in the pre-wet season. In the wet sea-son, CEPE events are more frequent during MJO phases 8-2-3. Conversely, nowave propagation over the South Pacific is observed in the wet season, changesin wind anomalies at high and low atmospheric levels only point to the influ-ence of the MJO via tropical teleconnection. This study may help monitoringand forecasting of very heavy rainfall events in northern Northeast Brazil inpre-wet season and wet season. |
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Repositório Institucional da Universidade Federal do Ceará (UFC) |
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Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil.RainfallLife cycleBrazil - NortheastChuvasCiclo de vidaBrasil - NordesteThis paper investigates the spatiotemporal variability of Contiguous ExtremePrecipitation Events (CEPE) related to Madden-Julian Oscillation (MJO) activ-ity during the pre-wet season and wet season in northern Northeast Brazil for30 years (1979–2010). Inherent differences in rainy season regimes are associ-ated with northern Northeast Brazil precipitation systems; these are isolatedduring pre-wet and wet season and analyse the intensity and the spatial areacovered by the CEPE. A daily index of MJO activity and its life cycle were usedto identify activity phases during heavy rainfall events. Composite analysis wasperformed for days with CEPE during the most frequent MJO phases in thepre-wet and wet seasons. The analysis shows the influence of the MJO onthe occurrence of CEPE in northern Northeast Brazil. In the pre-wet season,the MJO phases 8-1-2 affect the occurrence of heavy rainfall events,modifying the atmospheric circulation and water vapour transport over north-ern South America. Indications of Rossby wave propagation over the SouthPacific associated with MJO were found, suggesting tropic-extratropic tele-connection during occurrences of CEPE in the pre-wet season. In the wet sea-son, CEPE events are more frequent during MJO phases 8-2-3. Conversely, nowave propagation over the South Pacific is observed in the wet season, changesin wind anomalies at high and low atmospheric levels only point to the influ-ence of the MJO via tropical teleconnection. This study may help monitoringand forecasting of very heavy rainfall events in northern Northeast Brazil inpre-wet season and wet season.International Journal Of Climatology2022-10-11T11:51:49Z2022-10-11T11:51:49Z2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfVASCONCELOS JUNIOR, Francisco Chagas; JONES, Charles; Gandu, Adilson W.; MARTINS, Eduardo Sávio Passos Rodrigues. Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil. International Journal Of Climatology, United Kingdom, v. 41, p.3628–3639, 2021.0899-8418http://www.repositorio.ufc.br/handle/riufc/68726Vasconcelos Junior, Francisco ChagasJones, CharlesGandu, Adilson WagnerMartins, Eduardo Sávio Passos Rodriguesengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccess2023-01-17T12:41:32Zoai:repositorio.ufc.br:riufc/68726Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2023-01-17T12:41:32Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false |
dc.title.none.fl_str_mv |
Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil. |
title |
Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil. |
spellingShingle |
Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil. Vasconcelos Junior, Francisco Chagas Rainfall Life cycle Brazil - Northeast Chuvas Ciclo de vida Brasil - Nordeste |
title_short |
Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil. |
title_full |
Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil. |
title_fullStr |
Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil. |
title_full_unstemmed |
Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil. |
title_sort |
Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil. |
author |
Vasconcelos Junior, Francisco Chagas |
author_facet |
Vasconcelos Junior, Francisco Chagas Jones, Charles Gandu, Adilson Wagner Martins, Eduardo Sávio Passos Rodrigues |
author_role |
author |
author2 |
Jones, Charles Gandu, Adilson Wagner Martins, Eduardo Sávio Passos Rodrigues |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Vasconcelos Junior, Francisco Chagas Jones, Charles Gandu, Adilson Wagner Martins, Eduardo Sávio Passos Rodrigues |
dc.subject.por.fl_str_mv |
Rainfall Life cycle Brazil - Northeast Chuvas Ciclo de vida Brasil - Nordeste |
topic |
Rainfall Life cycle Brazil - Northeast Chuvas Ciclo de vida Brasil - Nordeste |
description |
This paper investigates the spatiotemporal variability of Contiguous ExtremePrecipitation Events (CEPE) related to Madden-Julian Oscillation (MJO) activ-ity during the pre-wet season and wet season in northern Northeast Brazil for30 years (1979–2010). Inherent differences in rainy season regimes are associ-ated with northern Northeast Brazil precipitation systems; these are isolatedduring pre-wet and wet season and analyse the intensity and the spatial areacovered by the CEPE. A daily index of MJO activity and its life cycle were usedto identify activity phases during heavy rainfall events. Composite analysis wasperformed for days with CEPE during the most frequent MJO phases in thepre-wet and wet seasons. The analysis shows the influence of the MJO onthe occurrence of CEPE in northern Northeast Brazil. In the pre-wet season,the MJO phases 8-1-2 affect the occurrence of heavy rainfall events,modifying the atmospheric circulation and water vapour transport over north-ern South America. Indications of Rossby wave propagation over the SouthPacific associated with MJO were found, suggesting tropic-extratropic tele-connection during occurrences of CEPE in the pre-wet season. In the wet sea-son, CEPE events are more frequent during MJO phases 8-2-3. Conversely, nowave propagation over the South Pacific is observed in the wet season, changesin wind anomalies at high and low atmospheric levels only point to the influ-ence of the MJO via tropical teleconnection. This study may help monitoringand forecasting of very heavy rainfall events in northern Northeast Brazil inpre-wet season and wet season. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021 2022-10-11T11:51:49Z 2022-10-11T11:51:49Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
VASCONCELOS JUNIOR, Francisco Chagas; JONES, Charles; Gandu, Adilson W.; MARTINS, Eduardo Sávio Passos Rodrigues. Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil. International Journal Of Climatology, United Kingdom, v. 41, p.3628–3639, 2021. 0899-8418 http://www.repositorio.ufc.br/handle/riufc/68726 |
identifier_str_mv |
VASCONCELOS JUNIOR, Francisco Chagas; JONES, Charles; Gandu, Adilson W.; MARTINS, Eduardo Sávio Passos Rodrigues. Impacts of the Oscillation on the intensity and spatial extent of heavy precipitation events in northern Northeast Brazil. International Journal Of Climatology, United Kingdom, v. 41, p.3628–3639, 2021. 0899-8418 |
url |
http://www.repositorio.ufc.br/handle/riufc/68726 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
International Journal Of Climatology |
publisher.none.fl_str_mv |
International Journal Of Climatology |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da Universidade Federal do Ceará (UFC) instname:Universidade Federal do Ceará (UFC) instacron:UFC |
instname_str |
Universidade Federal do Ceará (UFC) |
instacron_str |
UFC |
institution |
UFC |
reponame_str |
Repositório Institucional da Universidade Federal do Ceará (UFC) |
collection |
Repositório Institucional da Universidade Federal do Ceará (UFC) |
repository.name.fl_str_mv |
Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC) |
repository.mail.fl_str_mv |
bu@ufc.br || repositorio@ufc.br |
_version_ |
1809935810540077056 |