Actinometric determination of turbidity parameters in India |
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| Authors: | Murari Lal H S Rathor |
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| Institution: | (1) Department of Geophysics, Banaras Hindu University, Varanasi-5, India |
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| Abstract: | Summary A study of the wavelength exponent  of aerosol scattering in the Ångström relation for extinction by aerosol has been made from the ground-based measurments of direct solar radiation using Ångström pyrheliometer with and without Schott filters. It has been observed that in India, mainly for the middle part of the year this exponent is zero or even negative which means that the aerosol scattering is nearly neutral which is in marked contrast with the condition prevailing in middle latitudes. It is evident from the -values that the aerosol size distribution in India is far different from that prevailing in middle latitudes. At four representative stations in India, the values of the wavelength exponent and the atmospheric turbidity coefficient  have been determined using the method introduced byÅngström 1,2]) and are discussed here. |
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