Time–series analysis of surface ozone and nitrogen oxides concentrations in an urban area at Brazil

Developmental Biology

Felipe Norte Pereira²  Elba Calesso Teixeira¹  Dayana Milena Agudelo–Castaneda³ 

[1] Postgraduate Program in Remote Sensing and Meteorology, Geosciences Institute, Universidade Federal do Rio Grande do Sul (UFRGS), Brazil$$Research Department, Fundação Estadual de Proteção Ambiental Henrique Luis Roessler, RS. Av. Borges de Medeiros, 261, 90020–021, Porto Alegre, Brazil$$;Research Department, Fundação Estadual de Proteção Ambiental Henrique Luis Roessler, RS. Av. Borges de Medeiros, 261, 90020–021, Porto Alegre, Brazil$$;Postgraduate Program in Remote Sensing and Meteorology, Geosciences Institute, Universidade Federal do Rio Grande do Sul (UFRGS), Brazil$$

关键词: Nitrogen oxides;    ozone;    traffic air pollution;   

DOI  :  10.5094/APR.2014.048

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

The purpose of the present work was to study the concentration variations in O₃, NO, NO₂, NO_X over a 4–year period (2006–2009), using the Kolmogorov–Zurbenko filter. Data were decomposed into seasonal and trend components. Seasonal component of the time–series analysis (2006–2009) of NO and NO_x in Canoas and Esteio showed values above average during the cold seasons, while O₃ showed an opposite pattern. The trend component was marked by the decrease of NO₂ at Canoas and the increase of NO at Esteio, thus revealing their variation (NO and NO_X) due to local emissions. Furthermore, evaluations of the mean daily concentrations of NO, NO_X, NO₂, O₃, PM₁₀ and CO, and correlations of these pollutants with meteorological parameters (ambient temperature, wind velocity, solar radiation and relative humidity) allowed the confirmation of the influence of mobile sources in the study area.

【 授权许可】

Unknown   

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