Journal of Pollution Effects & Control
Open Access

Photochemical Smog

Photochemical smog may be a sort of smog produced when ultraviolet from the sun reacts with nitrogen oxides within the atmosphere. It is visible as a brown haze, and is most prominent during the morning & afternoon, especially in densely populated, warm cities.

Photochemical smog forms from a posh process, however the source of it's quite apparent. The largest contributor is automobiles, while coal-fired power plants and some other power plants also produce the necessary pollutants to facilitate its production. Due to its abundance in areas of warmer temperatures, photochemical smog is most common in the summer.It forms in the morning when a tremendous number people are driving their vehicles to work. Nitrogen oxides produced within the car engine are introduced into the atmosphere, which can combine with water to make aqua fortis or react with sunlight to supply singular oxygen atoms, which then combine with molecular oxygen to supply ozone. The aqua fortis may precipitate to the world leading to acid precipitation, or remain within the smog.