Comparison between atmospheric turbidity coefficients of desert and temperate climates

Determination of Linke turbidity factor from solar radiation measurement in northern Tunisia

“…For this measurement, a pyrheliometer equipped with sun follower is required. In spite of the diversity of the T L computation methods using solar data, our results are comparable to those founded in similar regions by other authors cited in the literature [4][5][6][7].…”

Solar Radiation in Saudi Arabia

“…The procedures for calculating these two parameters will not be discussed here. Abdelrahman et al (1988) found that the two parameters are approximately linearly related to each other.…”

“…The Angstrdrm turbidity coefficient for Dhahran was approximately ten times that for Davos, Switzerland, and twice that for Los Angeles. Abdelrahman et al (1988) compared the Linke turbidity factors for Dhahran and Avignon, France. They found that the ratio of the Linke factor at Dhahran to that at Avignon averaged 1.6 during the warmer months and 1.8 for October through March.…”

Validation and Ranking Methodologies for Solar Radiation Models

“…The latter version is used here. To overcome the difficulty in using T L while respecting the model's intentional simplicity, a simple linear function of β has been used, T L = 2.1331 + 19.0204 β (20.11) where the numerical coefficients have been obtained by combining the empirical determinations of β = f(T L ) proposed by different authors (Abdelrahman et al 1988;Grenier et al 1994;Hinzpeter 1950;Katz et al 1982). …”