Influence of Convectively Driven Flows in the Course of a Large Fire in Portugal: The Case of Pedrógão Grande
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/103183 https://doi.org/10.3390/atmos13030414 |
Resumo: | The influence of a mesoscale convective system (MCS) in the evolution of two wildfires that started during the afternoon of 17 June 2017 in Pedrógão Grande, Central Portugal is discussed and analysed using weather radar data, weather stations, video images and fire spread analysis. As the MCS approached the region, its convectively driven flows started to influence the fires. The overturning flows were formed by two main limbs: one organised as front-to-rear deep layer inflows that propagated over the convective region of the MCS and the other as rear-to-front mid-level inflows that descended below the anvil structure of the MCS. The rear-to-front inflows, while accelerating and descending to lower levels, contributed to modify the fires’ intensity and plume characteristics. After the two fires merged, the resulting junction fire became very intense and impossible to control. Then, a firestorm was generated, causing the deaths of 66 people. The main goal of this study is to detail the influence of the MCS in the fire spread, thus contributing to the general knowledge of outstanding fire behaviour modifications due to the influence of atmospheric convective processes. |
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Influence of Convectively Driven Flows in the Course of a Large Fire in Portugal: The Case of Pedrógão Grandemesoscale convective systemdiscrete downburstsconvective overturning flowrear-inflow jetweather radar datafirestormpyroconvective plumeThe influence of a mesoscale convective system (MCS) in the evolution of two wildfires that started during the afternoon of 17 June 2017 in Pedrógão Grande, Central Portugal is discussed and analysed using weather radar data, weather stations, video images and fire spread analysis. As the MCS approached the region, its convectively driven flows started to influence the fires. The overturning flows were formed by two main limbs: one organised as front-to-rear deep layer inflows that propagated over the convective region of the MCS and the other as rear-to-front mid-level inflows that descended below the anvil structure of the MCS. The rear-to-front inflows, while accelerating and descending to lower levels, contributed to modify the fires’ intensity and plume characteristics. After the two fires merged, the resulting junction fire became very intense and impossible to control. Then, a firestorm was generated, causing the deaths of 66 people. The main goal of this study is to detail the influence of the MCS in the fire spread, thus contributing to the general knowledge of outstanding fire behaviour modifications due to the influence of atmospheric convective processes.2022info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/103183http://hdl.handle.net/10316/103183https://doi.org/10.3390/atmos13030414eng2073-4433Pinto, PauloSilva, Álvaro PimpãoViegas, Domingos XavierAlmeida, MiguelRaposo, JorgeRibeiro, Luís Márioinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-10-20T20:31:54ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Influence of Convectively Driven Flows in the Course of a Large Fire in Portugal: The Case of Pedrógão Grande |
title |
Influence of Convectively Driven Flows in the Course of a Large Fire in Portugal: The Case of Pedrógão Grande |
spellingShingle |
Influence of Convectively Driven Flows in the Course of a Large Fire in Portugal: The Case of Pedrógão Grande Pinto, Paulo mesoscale convective system discrete downbursts convective overturning flow rear-inflow jet weather radar data firestorm pyroconvective plume |
title_short |
Influence of Convectively Driven Flows in the Course of a Large Fire in Portugal: The Case of Pedrógão Grande |
title_full |
Influence of Convectively Driven Flows in the Course of a Large Fire in Portugal: The Case of Pedrógão Grande |
title_fullStr |
Influence of Convectively Driven Flows in the Course of a Large Fire in Portugal: The Case of Pedrógão Grande |
title_full_unstemmed |
Influence of Convectively Driven Flows in the Course of a Large Fire in Portugal: The Case of Pedrógão Grande |
title_sort |
Influence of Convectively Driven Flows in the Course of a Large Fire in Portugal: The Case of Pedrógão Grande |
author |
Pinto, Paulo |
author_facet |
Pinto, Paulo Silva, Álvaro Pimpão Viegas, Domingos Xavier Almeida, Miguel Raposo, Jorge Ribeiro, Luís Mário |
author_role |
author |
author2 |
Silva, Álvaro Pimpão Viegas, Domingos Xavier Almeida, Miguel Raposo, Jorge Ribeiro, Luís Mário |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Pinto, Paulo Silva, Álvaro Pimpão Viegas, Domingos Xavier Almeida, Miguel Raposo, Jorge Ribeiro, Luís Mário |
dc.subject.por.fl_str_mv |
mesoscale convective system discrete downbursts convective overturning flow rear-inflow jet weather radar data firestorm pyroconvective plume |
topic |
mesoscale convective system discrete downbursts convective overturning flow rear-inflow jet weather radar data firestorm pyroconvective plume |
description |
The influence of a mesoscale convective system (MCS) in the evolution of two wildfires that started during the afternoon of 17 June 2017 in Pedrógão Grande, Central Portugal is discussed and analysed using weather radar data, weather stations, video images and fire spread analysis. As the MCS approached the region, its convectively driven flows started to influence the fires. The overturning flows were formed by two main limbs: one organised as front-to-rear deep layer inflows that propagated over the convective region of the MCS and the other as rear-to-front mid-level inflows that descended below the anvil structure of the MCS. The rear-to-front inflows, while accelerating and descending to lower levels, contributed to modify the fires’ intensity and plume characteristics. After the two fires merged, the resulting junction fire became very intense and impossible to control. Then, a firestorm was generated, causing the deaths of 66 people. The main goal of this study is to detail the influence of the MCS in the fire spread, thus contributing to the general knowledge of outstanding fire behaviour modifications due to the influence of atmospheric convective processes. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022 |
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 |
http://hdl.handle.net/10316/103183 http://hdl.handle.net/10316/103183 https://doi.org/10.3390/atmos13030414 |
url |
http://hdl.handle.net/10316/103183 https://doi.org/10.3390/atmos13030414 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2073-4433 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
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repository.mail.fl_str_mv |
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1777302808782962688 |