Contribution of anthropogenic pollutants to the increase of tropospheric ozone levels in the Oporto Metropolitan Area, Portugal since the 19th century

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Alvim Ferraz, MCM (Author) Other; Sousa, SIV (Author) FEUP; Pereira, MC (Author) FEUP; Martins, FG (Author) FEUP

Journal

Title: Environmental Pollution

Vol. 140 No. 3

Pages: 516-524

ISSN: 0269-7491

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 34 Citations

ISI Web of Science

Scopus - 39 Citations

Scientific classification

FOS: Natural sciences > Earth and related Environmental sciences

CORDIS: Natural sciences > Environmental science

Other information

Authenticus ID: P-004-MDC

DOI: 10.1016/j.envpol.2005.07.018

Abstract (EN): The main purpose of this study was to evaluate the contribution of anthropogenic pollutants to the increase of tropospheric ozone levels in the Oporto Metropolitan Area (Portugal) since the 19th century. The study was based on pre-industrial and recent data series, the results being analyzed according to the atmospheric chemistry. The treatment of ozone and meteorological data was performed by classical statistics and by time-series analysis. It was concluded that in the 19th century the ozone present in the troposphere was not of photochemical origin, being possible to consider the respective concentrations as reference values. For recent data a cycle of 8 h for ozone concentrations could be related to traffic. Compared to the 19th century, the current concentrations were 147% higher (252% higher in May) due to the increased photochemical production associated with the increased anthropogenic emissions.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9