Pyrheliometric determination of atmospheric turbidity in the harmattan season over Ile-Ife, Nigeria
✍ Scribed by Z.D. Adeyefa; J.A. Adedokun
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 674 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0960-1481
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✦ Synopsis
Measurements of direct solar radiation intensity, using an Angstrrm compensation pyrheliometer carried out over three harmattan seasons (1985)(1986)(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: Schiiepp (B), Angstrrm (3), Kastrov (C), Unsworth (z~) 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).