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 …

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 …

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 …

Solar radiation measurements made on Sal in the Cape Verde Islands during the 1974 Gate
project are analyzed in conjunction with aerosol size spectra data in order to describe the …

Solar radiation spectra were measured by a ground-level pyrheliometer (Eppley NIP)
equipped with a filter wheel. Three flat, circular, Schott filters were used to define three …

Measurements of total and diffuse components of solar radiation have been conducted
using pyranometers at Zaria (latitude 11° 06′ N, longitude 07° 41′ E and altitude of 653.9 …

Solar spectrophotometric measurements of the aerosol optical density during the dry dusty
(Harmattan) season at two carefully selected sites around the Lagos metropolis are …

Abstract The Advanced Technology Solar Telescope site survey Sky Brightness Monitor
simultaneously images the solar disk and the sky to about 8 solar radii in four wavelengths …

Measurements of normal incidence and global irradiance were made during the periods
November to December 1977 and November 1978 to February 1979. Aerosol density was …

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 …