The effects of atmospheric turbidity due to aerosols on the direct solar irradiance at the
surface at a low latitude (Ile-Ife (7° 30′ N, 4° 31′ E), south-western Nigeria) and a high …

Measurements of the ground-level spectral distributions of the direct, diffuse and global solar
irradiance between 300 and 1100 nm were made at Akure (7.15° N, 5.5° E), Nigeria, in …

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 …

Results of spectral solar radiation measurements at Ile-Ife (7°-30′ N, 4° 31′ E; South
Western Nigeria) for two non-consecutive months between December 1991 and February …

In the present analysis broad‐band turbidity parameters, which depend upon the attenuation
over the entire solar spectrum and which can be determined from unfiltered pyrheliometric …

Measurements of direct solar irradiance were taken episodically on two days of September
1990 and regularly in the summer periods from July to October 1991 and from mid-July to …

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 …

Solar global radiation was measured in several places in Costa Rica during the total solar
eclipse that occurred on July 11, 1991. In two of these places, Puntarenas and Santa Cruz …

The annual and monthly mean diurnal variations of the diffuse fraction of global solar
irradiance arriving on the ground at a tropical station in Sub-Sahel Africa is here been …