Spectral analysis of time series: an application for air pollution in the city of Vitória, Espírito Santo, Brazil

Detalhes bibliográficos
Autor(a) principal: Santo, Geisiely do Espírito
Data de Publicação: 2022
Outros Autores: Pinto, Wanderson de Paula
Tipo de documento: Artigo
Idioma: por
Título da fonte: Revista de Engenharia Química e Química
Texto Completo: https://periodicos.ufv.br/jcec/article/view/13892
Resumo: Air pollution is a factor causing an increase in the mortality rate, an increase in the rate of chronic diseases, an increase in the cost of healthcare expenses, a decrease in productivity and quality of life in general. It is worth remembering that the effects caused by air pollution may not only be local, it means that these pollutants can travel thousands of kilometers through the atmosphere, thus reaching communities far from the point of emission. Based on the risks that these pollutants can cause, this study aimed to analyze the time series of concentrations of atmospheric pollutants of PM10, PM2,5 and SO2, monitored at RGV, Espírito Santo, Brazil, using spectral analysis techniques. The data used in this research were measured at the stations of the Automatic Air Quality Monitoring Network (RAMQAr) and collected through the IEMA database. Through the spectral analysis of the time series, it was possible to observe that the concentrations of the pollutants PM10 and PM2,5 presented seasonality with a period of seven days, and for the pollutant SO2, there was no presence of seasonality. Thus, the seasonal variation presented can be explained mainly by the pace of transport movement in the RGV, that is, the highest measured concentrations of PM2,5 and PM10, occur during weekdays, when the flow of vehicles is greater, and the opposite occurs on weekends. As for SO2, as it does not present seasonal variation, it does not have a fixed repetition period.  
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spelling Spectral analysis of time series: an application for air pollution in the city of Vitória, Espírito Santo, Brazil Análise espectral de séries temporais: uma aplicação para a poluição do ar, na cidade de Vitória, Espírito Santo, BrasilSpectral analysis. Time series. Fisher's G test.Análise espectral. Séries temporais. Teste G de Fisher.Air pollution is a factor causing an increase in the mortality rate, an increase in the rate of chronic diseases, an increase in the cost of healthcare expenses, a decrease in productivity and quality of life in general. It is worth remembering that the effects caused by air pollution may not only be local, it means that these pollutants can travel thousands of kilometers through the atmosphere, thus reaching communities far from the point of emission. Based on the risks that these pollutants can cause, this study aimed to analyze the time series of concentrations of atmospheric pollutants of PM10, PM2,5 and SO2, monitored at RGV, Espírito Santo, Brazil, using spectral analysis techniques. The data used in this research were measured at the stations of the Automatic Air Quality Monitoring Network (RAMQAr) and collected through the IEMA database. Through the spectral analysis of the time series, it was possible to observe that the concentrations of the pollutants PM10 and PM2,5 presented seasonality with a period of seven days, and for the pollutant SO2, there was no presence of seasonality. Thus, the seasonal variation presented can be explained mainly by the pace of transport movement in the RGV, that is, the highest measured concentrations of PM2,5 and PM10, occur during weekdays, when the flow of vehicles is greater, and the opposite occurs on weekends. As for SO2, as it does not present seasonal variation, it does not have a fixed repetition period.  A poluição atmosférica é um fator causador do aumento da taxa de mortalidade, aumento da taxa de doenças crônicas, aumento no custo das despesas com saúde, diminuição da produtividade e da qualidade de vida de uma forma geral. Vale lembrar que os efeitos causados pela poluição do ar podem não ser apenas locais, isso significa que esses poluentes podem viajar milhares de quilômetros pela atmosfera, atingindo, assim, comunidades distantes do ponto de emissão. Baseado nos riscos que esses poluentes podem causar esse trabalho objetivou analisar as séries temporais de concentrações de poluentes atmosféricos de PM10, PM2,5 e SO2, monitorados na RGV, Espírito Santo, Brasil, utilizando as técnicas da análise espectral. Os dados utilizados nesta pesquisa foram medidos nas estações da Rede Automática de Monitoramento da Qualidade do Ar (RAMQAr) e coletados através do banco de dados do IEMA. Através da análise espectral da série temporal, foi possível observar que as concentrações dos poluentes PM10 e PM2,5 apresentaram sazonalidade com período de sete dias, e para o poluente SO2, não houve presença de sazonalidade. Dessa forma, a variação sazonal apresentada pode ser explicada principalmente pelo ritmo de movimentação dos transportes na RGV, ou seja, as maiores concentrações medidas de PM2,5 e PM10, ocorrem durante os dias úteis, quando o fluxo de veículos é maior, e o oposto ocorre nos fins de semana. Já para o SO2, por não apresentar variação sazonal, não possui um período fixo de repetição.Universidade Federal de Viçosa - UFV2022-03-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufv.br/jcec/article/view/1389210.18540/jcecvl8iss2pp13892-01eThe Journal of Engineering and Exact Sciences; Vol. 8 No. 2 (2022); 13892-01eThe Journal of Engineering and Exact Sciences; Vol. 8 Núm. 2 (2022); 13892-01eThe Journal of Engineering and Exact Sciences; v. 8 n. 2 (2022); 13892-01e2527-1075reponame:Revista de Engenharia Química e Químicainstname:Universidade Federal de Viçosa (UFV)instacron:UFVporhttps://periodicos.ufv.br/jcec/article/view/13892/7213Copyright (c) 2022 The Journal of Engineering and Exact Scienceshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessSanto, Geisiely do EspíritoPinto, Wanderson de Paula2022-04-08T17:11:09Zoai:ojs.periodicos.ufv.br:article/13892Revistahttp://www.seer.ufv.br/seer/rbeq2/index.php/req2/indexONGhttps://periodicos.ufv.br/jcec/oaijcec.journal@ufv.br||req2@ufv.br2446-94162446-9416opendoar:2022-04-08T17:11:09Revista de Engenharia Química e Química - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv Spectral analysis of time series: an application for air pollution in the city of Vitória, Espírito Santo, Brazil
Análise espectral de séries temporais: uma aplicação para a poluição do ar, na cidade de Vitória, Espírito Santo, Brasil
title Spectral analysis of time series: an application for air pollution in the city of Vitória, Espírito Santo, Brazil
spellingShingle Spectral analysis of time series: an application for air pollution in the city of Vitória, Espírito Santo, Brazil
Santo, Geisiely do Espírito
Spectral analysis. Time series. Fisher's G test.
Análise espectral. Séries temporais. Teste G de Fisher.
title_short Spectral analysis of time series: an application for air pollution in the city of Vitória, Espírito Santo, Brazil
title_full Spectral analysis of time series: an application for air pollution in the city of Vitória, Espírito Santo, Brazil
title_fullStr Spectral analysis of time series: an application for air pollution in the city of Vitória, Espírito Santo, Brazil
title_full_unstemmed Spectral analysis of time series: an application for air pollution in the city of Vitória, Espírito Santo, Brazil
title_sort Spectral analysis of time series: an application for air pollution in the city of Vitória, Espírito Santo, Brazil
author Santo, Geisiely do Espírito
author_facet Santo, Geisiely do Espírito
Pinto, Wanderson de Paula
author_role author
author2 Pinto, Wanderson de Paula
author2_role author
dc.contributor.author.fl_str_mv Santo, Geisiely do Espírito
Pinto, Wanderson de Paula
dc.subject.por.fl_str_mv Spectral analysis. Time series. Fisher's G test.
Análise espectral. Séries temporais. Teste G de Fisher.
topic Spectral analysis. Time series. Fisher's G test.
Análise espectral. Séries temporais. Teste G de Fisher.
description Air pollution is a factor causing an increase in the mortality rate, an increase in the rate of chronic diseases, an increase in the cost of healthcare expenses, a decrease in productivity and quality of life in general. It is worth remembering that the effects caused by air pollution may not only be local, it means that these pollutants can travel thousands of kilometers through the atmosphere, thus reaching communities far from the point of emission. Based on the risks that these pollutants can cause, this study aimed to analyze the time series of concentrations of atmospheric pollutants of PM10, PM2,5 and SO2, monitored at RGV, Espírito Santo, Brazil, using spectral analysis techniques. The data used in this research were measured at the stations of the Automatic Air Quality Monitoring Network (RAMQAr) and collected through the IEMA database. Through the spectral analysis of the time series, it was possible to observe that the concentrations of the pollutants PM10 and PM2,5 presented seasonality with a period of seven days, and for the pollutant SO2, there was no presence of seasonality. Thus, the seasonal variation presented can be explained mainly by the pace of transport movement in the RGV, that is, the highest measured concentrations of PM2,5 and PM10, occur during weekdays, when the flow of vehicles is greater, and the opposite occurs on weekends. As for SO2, as it does not present seasonal variation, it does not have a fixed repetition period.  
publishDate 2022
dc.date.none.fl_str_mv 2022-03-10
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv https://periodicos.ufv.br/jcec/article/view/13892
10.18540/jcecvl8iss2pp13892-01e
url https://periodicos.ufv.br/jcec/article/view/13892
identifier_str_mv 10.18540/jcecvl8iss2pp13892-01e
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufv.br/jcec/article/view/13892/7213
dc.rights.driver.fl_str_mv Copyright (c) 2022 The Journal of Engineering and Exact Sciences
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2022 The Journal of Engineering and Exact Sciences
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Viçosa - UFV
publisher.none.fl_str_mv Universidade Federal de Viçosa - UFV
dc.source.none.fl_str_mv The Journal of Engineering and Exact Sciences; Vol. 8 No. 2 (2022); 13892-01e
The Journal of Engineering and Exact Sciences; Vol. 8 Núm. 2 (2022); 13892-01e
The Journal of Engineering and Exact Sciences; v. 8 n. 2 (2022); 13892-01e
2527-1075
reponame:Revista de Engenharia Química e Química
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instname_str Universidade Federal de Viçosa (UFV)
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reponame_str Revista de Engenharia Química e Química
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