Pyrheliometric determination of atmospheric turbidity in the harmattan season over Ile-Ife, Nigeria

Z.D. Adeyefa and J.A. Adedokun

Renewable Energy, 1991, vol. 1, issue 3, 555-566

Abstract: Measurements of direct solar radiation intensity, using an Angström compensation pyrheliometer carried out over three harmattan seasons (1985–1987) at Ile-Ife (7°29′N, 4°34′E), Nigeria, have been used to determine atmospheric turbidity based on five different models of turbidity viz:: Schüepp (B), Angstrom (β), Kastrov (C), Unsworth (τa) and Linke (T). The five parameters indicate high aerosol loading of the atmosphere during the period and high correlation is established between them: (0.919 ⩽ r ⩽ 0.999). An inverse relationship has been noticed between horizontal visibility and atmospheric turbidity: (−0.80 ⩽ r ⩽ −0.76).

Date: 1991
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:1:y:1991:i:3:p:555-566

DOI: 10.1016/0960-1481(91)90071-V

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