الفهرس 
INTRODUCTION AND LITERATURE SURVEYOnly 14 pages are availabe for public view
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Abstract
The dispersion of SO2 and NO2 from Cairo south (Helwan), Shoubra El-Khiema, Cairo west and Cairo North power stations was studied using the emission and meteorological data of the year 2015. The Cairo atmosphere tends to be in average between slightly unstable (C) and neutral (D). The ground level concentration of the centre line of the plume in neutral condition and slightly unstable conditions at 10 km downwind distance by using Gaussian plum distribution. for Cairo South power station is The ground level concentration in (C) conditions is reduced by (96.14%), by (97.11%) and (94.27%) for SO2, NO2 and NO2 (NG); respectively. In the (D) condition, the ground concentration is reduced from (70.40%), (70.33%) and (77.81%) for SO2, NO2 and NO2 (NG); respectively. For Shoubra power station, the ground level concentration in (C) conditions is reduced by (75.7%), (75.7%), (77.9) for SO2, NOx and NOx (NG); respectively. In the (D) condition, the ground concentration is reduced from (96.4%), (96.4%) and (99.8%) for SO2, NOx and NOx (NG); respectively. For Cairo North power station, the ground level concentration of the Centre line of the plume in (C) conditions reduced by (93.8%) For NOx. In the neutral condition, the ground concentration is reduced by (83.7%). For Cairo West power station, The ground level concentration of the centre line of the plume in (C) conditions and reduced by (81.8%), (81.7%) and (83.7%) for SO2, NOx and NOx (NG); respectively. In the (D) condition, the ground concentration is reduced by (84.5%), (88.5%) and μg/m3 (79.6%) for SO2, NOx and NOx (NG); respectively.