CONNECTION OF THE FRONTAL EXTREMITIES WHITH INTERTROPICAL CONVERGENCE ZONE AND ANALYSIS OF ASSOCIATED PHENOMENA

Detalhes bibliográficos
Autor(a) principal: Muanza, Gomes António
Data de Publicação: 2022
Outros Autores: Fedorova, Natalia, Levit, Vladimir
Tipo de documento: Artigo
Idioma: por
eng
Título da fonte: Revista de Geociências do Nordeste
Texto Completo: https://periodicos.ufrn.br/revistadoregne/article/view/24618
Resumo: The ITCZ and Frontal Extremities (FE) are the main systems producing heavy rains in the Brazilian Northeast (BNE). The Simultaneous influence of both systems causes losses in society due to floods and landslides. The study aims are as follows: identification of the FE structure connected with ITCZ; elaboration of the atmospheric circulation pattern and analysis of the associated phenomena. Frontal identification was elaborated using potential equivalent temperature advection, relative vorticity and infrared satellite images. Five events showed connection of the frontal systems with ITCZ during the study period (2008-2017). Synoptic analysis of the tropospheric structure presented differences between cases of the frontal system connected with ITCZ and cases without such connection. Both patterns of the troposphere for the frontal zone connected with ITCZ and not connected were elaborated. This connection occurs when: a) Subtropical Jet Stream (SJS) is in the southwest of Brazil; b) anticyclonic circulation at the high levels is presented in the BNE (excluding event with VCAN).  The connection does not happen when: SJS and cyclonic circulation at the high levels is in the BNE. Humid mist and heavy rain were recorded in all cases. Heavy rain (20-28/05/2017) caused 4 deaths and landslides
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spelling CONNECTION OF THE FRONTAL EXTREMITIES WHITH INTERTROPICAL CONVERGENCE ZONE AND ANALYSIS OF ASSOCIATED PHENOMENACONEXIÓN DE LAS EXTREMIDADES FRONTALES CON ZONA DE CONVERGENCIA INTERTROPICAL Y ANÁLISIS DE FENÓMENOS ASOCIADOSLigação da extremidade frontal com zona de convergência intertropical (zcit) e análise de fenômenos associadosThe ITCZ and Frontal Extremities (FE) are the main systems producing heavy rains in the Brazilian Northeast (BNE). The Simultaneous influence of both systems causes losses in society due to floods and landslides. The study aims are as follows: identification of the FE structure connected with ITCZ; elaboration of the atmospheric circulation pattern and analysis of the associated phenomena. Frontal identification was elaborated using potential equivalent temperature advection, relative vorticity and infrared satellite images. Five events showed connection of the frontal systems with ITCZ during the study period (2008-2017). Synoptic analysis of the tropospheric structure presented differences between cases of the frontal system connected with ITCZ and cases without such connection. Both patterns of the troposphere for the frontal zone connected with ITCZ and not connected were elaborated. This connection occurs when: a) Subtropical Jet Stream (SJS) is in the southwest of Brazil; b) anticyclonic circulation at the high levels is presented in the BNE (excluding event with VCAN).  The connection does not happen when: SJS and cyclonic circulation at the high levels is in the BNE. Humid mist and heavy rain were recorded in all cases. Heavy rain (20-28/05/2017) caused 4 deaths and landslidesLa ZCIT y las Extremidades Frontales (FE) son los principales sistemas productores de lluvias intensas en el Nordeste brasileño (BNE). La influencia simultánea de ambos sistemas provoca pérdidas en la sociedad por inundaciones y deslizamientos de tierra. Los objetivos del estudio son los siguientes: identificación de la estructura FE conectada con ITCZ; elaboración del patrón de circulación atmosférica y análisis de los fenómenos asociados. La identificación frontal se elaboró ??utilizando imágenes de satélite de infrarrojos, vorticidad relativa y advección de temperatura equivalente potencial. Cinco eventos mostraron conexión de los sistemas frontales con ITCZ ??durante el período de estudio (2008-2017). El análisis sinóptico de la estructura troposférica presentó diferencias entre los casos del sistema frontal conectados con ITCZ ??y los casos sin dicha conexión. Se elaboraron ambos patrones de la troposfera para la zona frontal conectada con ITCZ ??y no conectada. Esta conexión ocurre cuando: a) Subtropical Jet Stream (SJS) está en el suroeste de Brasil; b) la circulación anticiclónica en los niveles altos se presenta en la BNE (excluyendo el evento con VCAN). La conexión no ocurre cuando: SJS y la circulación ciclónica en los niveles altos está en la BNE. En todos los casos se registraron neblinas húmedas y lluvias intensas. Fuertes lluvias (20-28 / 05/2017) causaron 4 muertos y deslizamientos de tierra.A ZCIT ??e as Extremidades Frontais (FE) são os principais sistemas produtores de chuvas intensas no Nordeste brasileiro (NEB). A influência simultânea de ambos os sistemas causa prejuízos à sociedade devido a enchentes e deslizamentos de terra. Os objetivos do estudo são os seguintes: identificação da estrutura FE ligada ao ITCZ; elaboração do padrão de circulação atmosférica e análise dos fenómenos associados. A identificação frontal foi elaborada usando advecção de temperatura potencial equivalente, vorticidade relativa e imagens de satélite infravermelho. Cinco eventos mostraram conexão dos sistemas frontais com ZCIT ??durante o período de estudo (2008-2017). A análise sinótica da estrutura troposférica apresentou diferenças entre os casos do sistema frontal conectado com ZCIT ??e os casos sem tal conexão. Ambos os padrões da troposfera para a zona frontal conectada com ZCIT ??e não conectada foram elaborados. Esta conexão ocorre quando: a) Corrente de Jato Subtropical (CJS) está no sudoeste do Brasil; b) circulação anticiclônica em altos níveis é apresentada no NEB (excluindo evento com VCAN). A conexão não acontece quando: Há CJS e circulação ciclônica em altos níveis no NEB. Névoa úmida e chuva forte foram registradas em todos os casos. Chuvas fortes (20-28/05/2017) causaram 4 mortes e deslizamentos de terra.Universidade Federal do Rio Grande do Norte2022-06-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://periodicos.ufrn.br/revistadoregne/article/view/2461810.21680/2447-3359.2022v8n1ID24618Revista de Geociências do Nordeste; v. 8 n. 1 (2022); 231-2432447-335910.21680/2447-3359.2022v8n1reponame:Revista de Geociências do Nordesteinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNporenghttps://periodicos.ufrn.br/revistadoregne/article/view/24618/15750https://periodicos.ufrn.br/revistadoregne/article/view/24618/15751Copyright (c) 2022 Revista de Geociências do Nordestehttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessMuanza, Gomes António Fedorova, NataliaLevit, Vladimir2022-12-20T18:42:35Zoai:periodicos.ufrn.br:article/24618Revistahttps://periodicos.ufrn.br/revistadoregne/indexPUBhttps://periodicos.ufrn.br/revistadoregne/oairegneufrn@gmail.com || periodicos@bczm.ufrn.br2447-33592447-3359opendoar:2022-12-20T18:42:35Revista de Geociências do Nordeste - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.none.fl_str_mv CONNECTION OF THE FRONTAL EXTREMITIES WHITH INTERTROPICAL CONVERGENCE ZONE AND ANALYSIS OF ASSOCIATED PHENOMENA
CONEXIÓN DE LAS EXTREMIDADES FRONTALES CON ZONA DE CONVERGENCIA INTERTROPICAL Y ANÁLISIS DE FENÓMENOS ASOCIADOS
Ligação da extremidade frontal com zona de convergência intertropical (zcit) e análise de fenômenos associados
title CONNECTION OF THE FRONTAL EXTREMITIES WHITH INTERTROPICAL CONVERGENCE ZONE AND ANALYSIS OF ASSOCIATED PHENOMENA
spellingShingle CONNECTION OF THE FRONTAL EXTREMITIES WHITH INTERTROPICAL CONVERGENCE ZONE AND ANALYSIS OF ASSOCIATED PHENOMENA
Muanza, Gomes António
title_short CONNECTION OF THE FRONTAL EXTREMITIES WHITH INTERTROPICAL CONVERGENCE ZONE AND ANALYSIS OF ASSOCIATED PHENOMENA
title_full CONNECTION OF THE FRONTAL EXTREMITIES WHITH INTERTROPICAL CONVERGENCE ZONE AND ANALYSIS OF ASSOCIATED PHENOMENA
title_fullStr CONNECTION OF THE FRONTAL EXTREMITIES WHITH INTERTROPICAL CONVERGENCE ZONE AND ANALYSIS OF ASSOCIATED PHENOMENA
title_full_unstemmed CONNECTION OF THE FRONTAL EXTREMITIES WHITH INTERTROPICAL CONVERGENCE ZONE AND ANALYSIS OF ASSOCIATED PHENOMENA
title_sort CONNECTION OF THE FRONTAL EXTREMITIES WHITH INTERTROPICAL CONVERGENCE ZONE AND ANALYSIS OF ASSOCIATED PHENOMENA
author Muanza, Gomes António
author_facet Muanza, Gomes António
Fedorova, Natalia
Levit, Vladimir
author_role author
author2 Fedorova, Natalia
Levit, Vladimir
author2_role author
author
dc.contributor.author.fl_str_mv Muanza, Gomes António
Fedorova, Natalia
Levit, Vladimir
description The ITCZ and Frontal Extremities (FE) are the main systems producing heavy rains in the Brazilian Northeast (BNE). The Simultaneous influence of both systems causes losses in society due to floods and landslides. The study aims are as follows: identification of the FE structure connected with ITCZ; elaboration of the atmospheric circulation pattern and analysis of the associated phenomena. Frontal identification was elaborated using potential equivalent temperature advection, relative vorticity and infrared satellite images. Five events showed connection of the frontal systems with ITCZ during the study period (2008-2017). Synoptic analysis of the tropospheric structure presented differences between cases of the frontal system connected with ITCZ and cases without such connection. Both patterns of the troposphere for the frontal zone connected with ITCZ and not connected were elaborated. This connection occurs when: a) Subtropical Jet Stream (SJS) is in the southwest of Brazil; b) anticyclonic circulation at the high levels is presented in the BNE (excluding event with VCAN).  The connection does not happen when: SJS and cyclonic circulation at the high levels is in the BNE. Humid mist and heavy rain were recorded in all cases. Heavy rain (20-28/05/2017) caused 4 deaths and landslides
publishDate 2022
dc.date.none.fl_str_mv 2022-06-14
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.ufrn.br/revistadoregne/article/view/24618
10.21680/2447-3359.2022v8n1ID24618
url https://periodicos.ufrn.br/revistadoregne/article/view/24618
identifier_str_mv 10.21680/2447-3359.2022v8n1ID24618
dc.language.iso.fl_str_mv por
eng
language por
eng
dc.relation.none.fl_str_mv https://periodicos.ufrn.br/revistadoregne/article/view/24618/15750
https://periodicos.ufrn.br/revistadoregne/article/view/24618/15751
dc.rights.driver.fl_str_mv Copyright (c) 2022 Revista de Geociências do Nordeste
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2022 Revista de Geociências do Nordeste
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidade Federal do Rio Grande do Norte
publisher.none.fl_str_mv Universidade Federal do Rio Grande do Norte
dc.source.none.fl_str_mv Revista de Geociências do Nordeste; v. 8 n. 1 (2022); 231-243
2447-3359
10.21680/2447-3359.2022v8n1
reponame:Revista de Geociências do Nordeste
instname:Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
instname_str Universidade Federal do Rio Grande do Norte (UFRN)
instacron_str UFRN
institution UFRN
reponame_str Revista de Geociências do Nordeste
collection Revista de Geociências do Nordeste
repository.name.fl_str_mv Revista de Geociências do Nordeste - Universidade Federal do Rio Grande do Norte (UFRN)
repository.mail.fl_str_mv regneufrn@gmail.com || periodicos@bczm.ufrn.br
_version_ 1797052929199308800

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