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Studying the extinction coefficient due to aerosol particles at different spectral bands in some regions at great Cairo

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  • Mosalam Shaltout, M.A.
  • Tadros, M.T.Y.
  • El-Metwally, M.

Abstract

Extinction coefficient due to aerosol has been estimated by Pyrheliometric and Gorgie type Actinometric measurements in the industrial, urban areas and compared with agricultural areas. The measurements distributed over one year from June 1992 to May 1993 were made under clear sky for five spectral bands. The results show two maxima in hot wet and spring months and minimum in winter months, but there is a fluctuation in urban area. Diurnal variations show maximum at noon especially in the industrial area. Level of extinction coefficient in the industrial and urban area is greater than that of the agricultural area, except for hot wet months is due to the increase of water vapor content in agricultural area. Spectral distribution of the extinction coefficient decreases monotonically with wavelength. Size of particles in industrial area is greater than in urban and agricultural areas. The temperature and water vapor content have important rules in increasing the extinction coefficient of aerosols.

Suggested Citation

  • Mosalam Shaltout, M.A. & Tadros, M.T.Y. & El-Metwally, M., 2000. "Studying the extinction coefficient due to aerosol particles at different spectral bands in some regions at great Cairo," Renewable Energy, Elsevier, vol. 19(4), pages 597-615.
    • Handle: RePEc:eee:renene:v:19:y:2000:i:4:p:597-615
    DOI: 10.1016/S0960-1481(99)00077-4
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    Cited by:

    1. Gutiérrez-Trashorras, Antonio J. & Villicaña-Ortiz, Eunice & Álvarez-Álvarez, Eduardo & González-Caballín, Juan M. & Xiberta-Bernat, Jorge & Suarez-López, María J., 2018. "Attenuation processes of solar radiation. Application to the quantification of direct and diffuse solar irradiances on horizontal surfaces in Mexico by means of an overall atmospheric transmittance," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 93-106.
    2. Tadros, M.T.Y. & El-Metwally, M. & Hamed, A.B., 2002. "Determination of Ångström coefficients from spectral aerosol optical depth at two sites in Egypt," Renewable Energy, Elsevier, vol. 27(4), pages 621-645.

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