139 - chapter 9 definition

A layer of gasses surrounding the earth and divided vertically into 4 layer on the basis of temperature.

• Atmosphere

• Troposphere

• Stratosphere

• Mesosphere

Is a normal component of the atmosphere, but the amount may vary significantly over time and location.

• Water vapor

• Local climate

• Pollution

• Fogs

Is a major factor that affects the amount of water vapor (moisture) in the air.

• Local climate

• Water vapor

• Pollution

• Water pollution

Form during vapor condensation, involved in serious pollution episodes, droplets help the conversation of sulfur oxide into acid and block heat energy from the sun and prolong weather circulation patterns that tend to trap the pollutants.

• Water vapor

• Pollution

• Fogs

• Smogs

Extends about 12km above earth, is the lowest surface layer of the atmosphere, consist of the mixture of the gases, the layer which clouds form, weather patterns developed and pollution problems occur and the temperature decreases with hight.

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

The layer above troposphere, extends about 50km above earth, is a stable layer (in term of air circulation patterns), rich in ozone (O3) and it is affected by air pollution and temperature increases with hight.

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Layer of the atmosphere above the atmosphere are unaffected by air pollution, extend about 80km above earth and temperature decreases with hight.

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Extend several hundred km above the earth, temperature increase with hight and can rise to as high as 2000c.

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Means no vertical movement of air masses and therefore no mixture or dispersion of pollutants in the vertical direction.

• Stable atmosphere

• Unstable atmosphere

Is one in which the air moves naturally vertical direction, increase mixing and dispersion of the pollutants.

• Stable atmosphere

• Unstable atmosphere