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The Evolution of Temporal and Spatial Patterns of Carbon Monoxide Concentrations in the Metropolitan Area of Sao Paulo, Brazil
Joint Authors
Soares, Jacyra
Ribeiro, Flavia Noronha Dutra
Salinas, Delhi Teresa Paiva
de Oliveira, Amauri Pereira
de Miranda, Regina Maura
Souza, Luana Antunes Tolentino
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-09-21
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
The Environmental Agency of Sao Paulo has a large dataset of carbon monoxide measurements: 20 years of records in 18 automatic stations inside the metropolitan area.
However, a thorough investigation on the time evolution of CO concentration tendency and cycles also considering spatial variability is lacking.
The investigation consists of a trend line analysis, a periodogram analysis, a correlation between CO concentration and meteorological variables, and spatial distribution of CO concentration.
Local and federal policies helped in decreasing CO concentrations and the highest decreasing rate was 0.7% per month.
This tendency is lately stabilizing, since the vehicles fleet is increasing.
CO most relevant cycles are annual and diurnal and a few series indicate a weekly cycle.
Diurnal cycle shows two peaks, morning and evening rush hours, 1.2 and 1.1 ppm, respectively, in 2012.
However, lately there is an extended evening peak (20 h to 23 h), related to changes in emission patterns.
The spatial analysis showed that CO concentration has high spatial variability and is influenced by proximity to heavy traffic and vegetated areas.
The present work indicates that several processes affect CO concentration and these results form a valuable basis for other studies involving air quality modeling, mitigation, and urban planning.
American Psychological Association (APA)
Ribeiro, Flavia Noronha Dutra& Salinas, Delhi Teresa Paiva& Soares, Jacyra& de Oliveira, Amauri Pereira& de Miranda, Regina Maura& Souza, Luana Antunes Tolentino. 2016. The Evolution of Temporal and Spatial Patterns of Carbon Monoxide Concentrations in the Metropolitan Area of Sao Paulo, Brazil. Advances in Meteorology،Vol. 2016, no. 2016, pp.1-13.
https://search.emarefa.net/detail/BIM-1095685
Modern Language Association (MLA)
Ribeiro, Flavia Noronha Dutra…[et al.]. The Evolution of Temporal and Spatial Patterns of Carbon Monoxide Concentrations in the Metropolitan Area of Sao Paulo, Brazil. Advances in Meteorology No. 2016 (2016), pp.1-13.
https://search.emarefa.net/detail/BIM-1095685
American Medical Association (AMA)
Ribeiro, Flavia Noronha Dutra& Salinas, Delhi Teresa Paiva& Soares, Jacyra& de Oliveira, Amauri Pereira& de Miranda, Regina Maura& Souza, Luana Antunes Tolentino. The Evolution of Temporal and Spatial Patterns of Carbon Monoxide Concentrations in the Metropolitan Area of Sao Paulo, Brazil. Advances in Meteorology. 2016. Vol. 2016, no. 2016, pp.1-13.
https://search.emarefa.net/detail/BIM-1095685
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1095685