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 …

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 …

Solar radiation measurements were made using sun photometers and pyranometers during
31 May-7 June 1991 at several places in Iran and during 12 June-17 September 1991 at a …

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 …

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) …

Calculations of the spectral distribution of visible radiation (270–710 nm) in the direct solar
beam were made for three aerosol size distributions at “thin” and “dense” concentrations …

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

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 …

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 …

This report contains the results from 30-minute observations of UV (0.29 to 0.38 μm) and
total solar irradiation,(0.3 to 3.0 μm) made on the rooftop of a medium size building in …