Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Variations of Carbon Monoxide Concentrations in the Megacity of São Paulo from 2000 to 2015 in Different Time Scales

José Roberto Rozante
* ORCID logo ,
Vinícius Rozante
,
Débora S. Alvim
,
Antônio Ocimar Manzi
,
Júlio Barboza Chiquetto
ORCID logo ,
Monica Siqueira D'Amelio
,
Demerval Soares Moreira
Version 1 : Received: 3 April 2017 / Approved: 4 April 2017 / Online: 4 April 2017 (11:14:07 CEST)

A peer-reviewed article of this Preprint also exists.

Rozante, J.R.; Rozante, V.; Souza Alvim, D.; Ocimar Manzi, A.; Barboza Chiquetto, J.; Siqueira D’Amelio, M.T.; Moreira, D.S. Variations of Carbon Monoxide Concentrations in the Megacity of São Paulo from 2000 to 2015 in Different Time Scales. Atmosphere 2017, 8, 81. Rozante, J.R.; Rozante, V.; Souza Alvim, D.; Ocimar Manzi, A.; Barboza Chiquetto, J.; Siqueira D’Amelio, M.T.; Moreira, D.S. Variations of Carbon Monoxide Concentrations in the Megacity of São Paulo from 2000 to 2015 in Different Time Scales. Atmosphere 2017, 8, 81.

Abstract

Air pollution is an important public health issue. High levels of carbon monoxide in the atmosphere are hazardous to human health. Studies regarding the concentration of this and other gases in the atmosphere allow political actions to manage and reduce the emission of pollutants. In this context, this paper studied the annual, seasonal and daily variations of carbon monoxide (CO) concentration for the Metropolitan Region of São Paulo (MRSP). We studied three sites in the MRSP, chosen due to the longer time series and the localities. Two of them are located in areas under the influence of heavy vehicle traffic (Osasco and Congonhas) and the third one in a city park (Ibirapuera Park). The results showed high influence of gasoline vehicles on CO emission. In the annual scale, instead of following the increasing number of vehicles, CO emission and concentration decreased due to improvements in emission technology. CO emission showed a seasonal, weekly and diurnal cycle. The highest values of mean concentration were observed in June/July for Osasco (2.20 ppm), Congonhas (2.04 ppm) and Ibirapuera (1.04 ppm), during the morning, due to weak dispersion of the polluting gases.

Keywords

carbon monoxide; diurnal cycle; seasonal cycle; urban pollution; pollution trends

Subject

Environmental and Earth Sciences, Atmospheric Science and Meteorology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Download PDF

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0
Get PDF Cite Share 0
Bookmark BibSonomy Mendeley Reddit Delicious
×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.