![Sample our Built Environment journals, sign in here to start your access, Latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5926/TOC-Subject-Sample-2021-Built-Environment.jpg"})
Abstract
Measurements of ultraviolet solar radiation (UV radiation) of wavelengths 0.295–0.385 μm were recorded from a huge data set collected every 10 minutes for a long period of time (over 60 months) in Riyadh, Saudi Arabia (Lat. 24°6′ N Long. 46°7′ E). The daily and monthly average percent ratio of UV to global irradiance was discussed. Findings indicate that maximum UV radiation occurs in July (16.6 Wm−2) and the minimum values occur in December (8.3 Wm−2). The measured UV intensity in Riyadh was compared with those measured in different regional cities; Bahrain, Kuwait, Dhahran, Makkah (Al-Mukkaramah) and Cairo. The results of comparison were discussed and attributed to different causes. It shows that the data of Riyadh are in good agreement with those of Dhahran and Cairo.