SMOG

Mon 12/34/56 4:00

Industrial smog (gray smog) - from coal burning

power plants- consist of mostly sulfur dioxide, sulfuric acid, suspended particles.

Chemistry of Industrial Smog

C + O2 = CO2 carbon dioxide

2C + O2 = 2CO carbon monoxide

S + O2 = SO2 sulfur dioxide

2SO2 + O2 = 2SO3 sulfur trioxide

SO3 + H2O = H2SO4 Sulfuric acid

2NH 3 + H2SO4 = (NH4)2SO4 ammonium sulfate

INVERSION LAYERS

Blankets of air trapping various sorts of air pollutants. Natural ventilation by the convection mechanism is not possible.

URBAN HEAT ISLAND

BROWN CLOUD

THE IMPORTANCE OF ATMOSPHERIC CONVECTION

MORTALITY

Air pollution is one of the major environ-mental causes of premature mortality.