Spectral beam solar radiation measurements for the period July 1980 to June 1981 were
made in Dhahran, Saudi Arabia (Lat. 26° 23′, Long. 50° 00′), using broad-band niter …

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° …

Factors affecting atmospheric turbidity are discussed. The solar radiometer measurements
carried out from Pune using narrow band interference filters are analyzed to determine …

Atmospheric turbidity conditions were monitored during the period 1989–1995 in rural and
urban sites in Egypt. The rural site (Aswan) is in the south region of Egypt (desert climate) …

Atmospheric turbidity parameters have been determined following Angstrom's method at
three locations in Bangladesh namely, Dhaka city (23.7° N) and two rural locations, Haripur …

Linke turbidity factor and Angstrom turbidity coefficient, linked to the aerosols, are very
important since many solar radiation models for clear days use these parameters for active …

In a recent paper, Rangarajan (1972) has reported measurements of atmospheric turbidity
made for a period of one year at Poona (18'32'N, 73'51'E, 555 m as 1.) using a …

Atmospheric turbidity and pollution have been studied in India for many years. This has
been done by means of spectral measurements of direct solar radiation using Ångström …

Values of the Angstrom turbidity coefficient, β, at 0.50 μm wavelength have been determined
in Lagos, a tropical coastal city in Nigeria, for 17months between 1990 and 1991 using a …

During the last two decades, the urban areas in the city of Riyadh—the capital of Saudi
Arabia—were increasing at an exceptionally high rate through a series of development …