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Al-Hemoud Ali Al-Sudairawi Mane Al-Rashidi Mufreh Behbehani Weam Al-Khayat Ahmed 《Natural Hazards》2019,97(1):139-155
Natural Hazards - Boundary layer temperature inversion and mixing heights are important parameters in understanding the atmospheric dispersion of air pollution. Surface and elevated inversions were... 相似文献
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Mufreh S. Al-Rashidi Mohamed F. Yassin Nawaf S. Alhajeri Marium J. Malek 《Arabian Journal of Geosciences》2018,11(3):59
There is a great demand for estimating the ambient air pollutant background concentrations in order to assess the effectiveness of different emission control strategies. In this paper, the background concentrations of four pollutants, namely sulfur dioxide (SO2), nitrogen oxides (NOx), carbon monoxide (CO), and ozone (O3) pollutants in urban, suburban, and rural environments were investigated using Kolmogorov–Zurbenko (KZ) filter technique. Air quality data from monitoring stations over a period of 4 years (2007–2010) was analyzed for three locations in Kuwait, namely urban, suburban, and rural. The spatial and temporal (daily, weekly, and monthly) variations of the four pollutants were analyzed. The results show that the levels of ambient air pollutant background concentrations were high in the urban site compared to suburban and rural area. The diurnal variation of SO2 concentration showed an early morning peak, while the diurnal variation of NOx concentration constituted has two peaks, one was in the early morning hours (5 to 8 a.m.) and the second was in nighttime hours (8 to 11 p.m.). These two peaks were observed at all three locations. The monthly background NOx concentration reached a maximum in winter and minimum in summer. Diurnal variation of CO concentration showed a similar trend to SO2 concentrations in all three locations. Because of the photochemical reactions that occur in the atmosphere, the background concentration of O3 showed an inverse relation with respect to background concentration of NOx. 相似文献
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