brown-air city, gray-air city

[Настро]

Помогите, пожалуйста, найти эквиваленты словам brown-air city, gray-air city(из сферы экологии).....Спс заранее

[mahavishnu]

Термина, к сожалению, не знаю, но знаю, что считается, что Нью-Йорк - город с серым воздухом, а Лос-Анджелес - с коричневым.

[GhostLibrarian]

как вариант - с серым/коричневым смогом
либо с фотохимическим смогом (коричневый)
со смогом из монооксида углерода (серый)

[NicaSurfer]

Check this out:

"The cities can be generally divided into two categories, depending (based) on climate and the type of air pollution. Gray-air cities are generally located in cold, moist climates. The major pollutants are sulfur oxides and particulates. These pollutants combine with atmospheric moisture to form the grayish haze called smog, a term coined in 1905 to describe the mixture of smoke and fog that plagued industrial England. The gray-air cities depend greatly on coal and oil and are usually heavily industrialized. The air in these cities is especially bad during cold, wet winters, when the demand for home heating oil and electricity is heavy and atmospheric moisture content is high.
Brown-air cities are typically located in warm, dry, and sunny climates and are generally newer cities with few polluting industries. The major sources of pollution in these cities are the automobile
and the electric power plant, the primary pollutants are carbon monoxide, hydrocarbons, and nitrogen oxides. In brown-air cities atmospheric hydrocarbons and nitrogen oxides from automobiles and power plants react in the presence of sunlight. A number of secondary pollutants such as ozone, formaldehyde, and peroxyacylnitrate (PAN) are formed. The reactions are called photochemical reactions because they involve both sunlight and chemical pollutants. The resulting brownish-orange shroud of air pollution is called photochemical smog. Ozone (O3) is the major photochemical oxidant, a highly reactive chemical, it erodes rubber, irritates the respiratory system, and damages trees."