Photochemical smog. The brown color is cause by the presence of a various Nitrous Oxides.
Saludos. :-)
hydrocarbon
When weather systems are calm, stagnant air helps smog to form. Smog is sometimes referred to as haze or fog.
Both the classic London smog (sulfur dioxide, fog and particulates) and the present photochemical smog (ozone, PAHs, hydrocarbon and nitrogen oxides oxides) are air pollution resulting from primary air emissions like hydrocarbons, sulfur dioxide, nitrogen oxides.
The smog.
Why, that would be Smog -- a worried derived from the two words, Smoke and Fog, first reportedly used in LA that has plenty of both.
hydrocarbons
The type of smog that produces the brown haze is known as a photochemical smog. This is seen when oil or coal is burned.
A dirty haze resulting from air pollution and air moisture is called smog.
Photochemical smog is a type of smog made when hydrocarbons and nitrogen oxides mix with sunlight.
Smog is a product of air pollution. The more air pollution in an area, the less fog is needed to create smog.
Smog is a brown haze that causes harmful chemicals such as ozone.
I think soot and smog come from the air pollution.
Smog Is smoke + fog, and that smoke is pollution.
hydrocarbon
When weather systems are calm, stagnant air helps smog to form. Smog is sometimes referred to as haze or fog.
smog is a solution because it is the main ingredient in air and pollution combined
smog