Estimation the Efficiency of Sunlight UV on Inactivation COVID-19 Virus

The solar UV radiation coming from the sun is considered as main source of microbial germicide and environmental sterilization. objective this study to estimate dose amount time required inactivate coronaviruses by exposure. published trials on 254-nm inactivation under ultraviolet light exposure families equivalent microbe in terms D90 (ultraviolet for 90% inactivation), or any other or/and genome size was examined summarized. mean with its confident interval unified D90-254 nm all assumed susceptibility SARS-CoV-2 (COVID-19) virus. spectrum (sensitivity envelope) microbes a function wavelength UVB range (280 320 nm) adopted literature. measurement intensity at Baghdad's geographical location used over year every fifteen minutes converted lump sum per 280 using simplified mathematical model. A composite action drawn that including virus sensitivity normalized 254 nm, measurements spectrum, effective coronaviruses. area calculated numerically find flux. predicted each value simulate sterility outdoor surfaces months within Baghdad station. This work should be useful provide decision-makers clear picture sterilization process management curfew timing arrangement.