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Seasonal Variations of Tropospheric Ozone Concentrations

§ Polytechnic of Namibia

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Seasonal Variations of Tropospheric Ozone Concentrations

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Abstract

This study shows strong seasonality of ground level ozone concentrations with spring (September and October) maximum and winter (May and June) minimum levels. The levels were observed in decreasing order per season as: spring>summer>autumn>winter. The Johannesburg ozone levels were much lower than Botsalano and Marikana levels. The monthly levels for the 2007 to 2008 period were determined in order of decreasing abundance as Marikana (21.07 -50.02 ppb), Botsalano (28.17 -37.94 ppb), Buccleuch (2.03 -23.42 ppb), Delta (5.76 -17.32 ppb) and . The precursors of ozone (NO x , NO 2 , and NO) also showed peaks in winter (May-June). Anti-correlation of ozone and its precursors (NO x , NO 2 , and NO) were also observed. The authors also conclude that the formation of ozone in Johannesburg occurs under the VOC-sensitive regime, and that the possible sources of ozone in the city are vehicular and industrial and businesses.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Dr. Nnenesi A. Kgabi, Ramotsamai M. Sehloho. 2012. "Seasonal Variations of Tropospheric Ozone Concentrations". Global Journal of Science Frontier Research - B: Chemistry GJSFR-B Volume 12 (GJSFR Volume 12 Issue B5).

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords
Classification
GJSFR-B Classification FOR Code: 039901
Version of record
v1.2

Issue date
October 2, 2012

Language
English
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Seasonal Variations of Tropospheric Ozone Concentrations

Dr. Kgabi
Dr. Kgabi Polytechnic of Namibia
Ramotsamai Sehloho
Ramotsamai Sehloho <p>Polytechnic of Namibia</p>