Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Variance analysis applied to ground-level ozone concentrations in the state of São Paulo, Brazil

Variance analysis applied to ground-level ozone concentrations in the state of São Paulo, Brazil This study applied the analysis of variance (ANOVA) technique and Scott–Knott test to investigate the patterns associated with the variability of daily maximum ozone concentrations registered between 1996 and 2013 at 32 sites in the State of São Paulo, Brazil. The dataset was analyzed using the ANOVA three way test, arranged in a factorial design (4 × 2 × 32), with four replicates per treatment, followed by the Scott–Knott test. In the ANOVA and Scott–Knott test, the first factor (a) represented the seasons, the second factor (b) distinguished measurements taken on weekdays and weekends, and the third factor (c) distinguished each of the 32 sites. The ANOVA technique and Scott–Knott test produced significant results, showing a three-way interaction between the factors mentioned. We also identified that maximum ozone concentrations occurred generally during the spring, followed by the summer; also, greater values of ground level ozone were registered on weekends in most sites, especially in those influenced mainly by vehicular emissions. Furthermore, results suggest that vehicular emissions play an important role on triggering the weekend effect on ozone levels. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Brazilian Journal of Chemical Engineering Springer Journals

Variance analysis applied to ground-level ozone concentrations in the state of São Paulo, Brazil

Loading next page...
 
/lp/springer-journals/variance-analysis-applied-to-ground-level-ozone-concentrations-in-the-0He2JwdEuf

References (33)

Publisher
Springer Journals
Copyright
Copyright © Associação Brasileira de Engenharia Química 2020
ISSN
0104-6632
eISSN
1678-4383
DOI
10.1007/s43153-020-00045-7
Publisher site
See Article on Publisher Site

Abstract

This study applied the analysis of variance (ANOVA) technique and Scott–Knott test to investigate the patterns associated with the variability of daily maximum ozone concentrations registered between 1996 and 2013 at 32 sites in the State of São Paulo, Brazil. The dataset was analyzed using the ANOVA three way test, arranged in a factorial design (4 × 2 × 32), with four replicates per treatment, followed by the Scott–Knott test. In the ANOVA and Scott–Knott test, the first factor (a) represented the seasons, the second factor (b) distinguished measurements taken on weekdays and weekends, and the third factor (c) distinguished each of the 32 sites. The ANOVA technique and Scott–Knott test produced significant results, showing a three-way interaction between the factors mentioned. We also identified that maximum ozone concentrations occurred generally during the spring, followed by the summer; also, greater values of ground level ozone were registered on weekends in most sites, especially in those influenced mainly by vehicular emissions. Furthermore, results suggest that vehicular emissions play an important role on triggering the weekend effect on ozone levels.

Journal

Brazilian Journal of Chemical EngineeringSpringer Journals

Published: Sep 27, 2020

There are no references for this article.