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Document Type |
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Article In Journal |
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Document Title |
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Spatial Distribution and Temporal Variation in Ambient Ozone and Its Associated NOx in the Atmosphere of Jeddah City, Saudi Arabia التوزيع الزمانى والمكانى للأوزون واكاسيد النيتروجين المصاحب له فى هواء مدينة جدة يالمملكة العربية السعودية |
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Subject |
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Enviromental sciences |
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Document Language |
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English |
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Abstract |
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Concentrations of ambient ozone (O3) and nitrogen oxides (NOx) were measured continuously for a period of 12 months
in the city of Jeddah from December 2011 to December 2012. Meteorological parameters, wind speed, temperature, and
relative humidity were also monitored. Concentrations of ground O3 were found to be highly dependent on the NOx diurnal
cycle and wind speed. Nitrogen oxides were found to exceed air quality standards, especially in industrial sites, while O3
concentrations were found to exceed 40 ppb, averaged over 1 h, on more than 24% of the measured days in the rural sites.
Furthermore, they exceeded 30% in all other areas (i.e., the urban ones).
O3 and NOx were inversely related. The highest average NOx concentration (96 ppb) occurred in a rural area downwind
of a desalination plant, while the average O3 concentration peaked in a rural area upwind of a desalination plant, reaching
63.5 ppb, although it also reached 72.6 in another rural area, and we consider this latter result as the background figure in
the present study. The seasonal variations of O3 were more distinct than those of NOx. To the best of our knowledge, this is
the first report providing comprehensive background information on air quality in an arid area of the developing world. |
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ISSN |
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1680-8584 |
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Journal Name |
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Aerosol and Air Quality Research, |
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Volume |
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13 |
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Issue Number |
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2013 |
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Publishing Year |
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1434 AH
2013 AD |
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Article Type |
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Article |
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Added Date |
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Monday, December 16, 2013 |
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Researchers
| Ibrahim A. Hassan | Hassan, Ibrahim A. | Researcher | Doctorate | iagadallah@kau.edu.sa |
| Jalal M. Basahi | Basahi, Jalal M. | Researcher | Doctorate | |
| Iqbal M. Ismail | Ismail, Iqbal M. | Researcher | | |
| Tutki M. Habeebullah | Habeebullah, Tutki M. | Researcher | | |
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Files
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36416.pdf
| pdf | Spatial Distribution and Temporal Variation in Ambient Ozone and Its Associated
NOx in the Atmosphere of Jeddah City, Saudi Arabia |
|