UV-A Distribution in Bahir Dar City and at Ertale

Belayneh Demilie

dc.contributor.author	Belayneh Demilie
dc.date.accessioned	2023-01-27T12:14:17Z
dc.date.available	2023-01-27T12:14:17Z
dc.date.issued	2022-12-23
dc.identifier.uri	http://ir.bdu.edu.et/handle/123456789/14911
dc.description.abstract	The project intends on Ultraviolet- A (UV-A) distribution in Bahir Dar City (geographic latitude 110 36’N, longitude 370 23’E) and Ertale (geographic latitude 130 35’58.99’’ N, longitude 400 39’59.99’’E). UV-A has wavelength ranges from 315nm-400nm, In this study, satellite-based data (from NASA) was used to study solar UV-A radiation in daily, monthly- annually, yearly and seasonal variations in selected two places. The study period ranges from the beginning of January 2011 until the end of December 2020 – ten years based study. The results indicate that UV-A, in both places, is periodical–seasonal dependent within seasons and/or months. UV-A radiation difference variation in two places based on altitude, latitude ozone layer cloud cover and so on.The real data were described graphically using Origin plotting/software. The highest and lowest UV-A at Bahir Dar City were 20.23w/m2 and 4.52w/m2 , on 3 May 2020 and 24 July 2016, respectively. On the other hand, the highest and lowest UV-A radiations at Ertale 19.36w/m2 and 3.06w/m2 , on 10 May 2020 and 6 August 20019, respectively. Keywords: Excessive exposure to solar ultraviolet (UV-A) radiation has effects on life on Earth	en_US
dc.language.iso	en_US	en_US
dc.subject	Physics	en_US
dc.title	UV-A Distribution in Bahir Dar City and at Ertale	en_US
dc.type	Thesis	en_US