GlossaryHeading | GlossaryDetails |
Lapse rate | It is defined as the rate at which atmospheric temperature decreases with increase in altitude. |
Lifetime (in the atmosphere) | The approximate amount of time it would take for the anthropogenic increment to an atmospheric pollutant concentration to return to its natural level (assuming emissions cease) as a result of either being converted to another chemical compound or being taken out of the atmosphere via a sink. |
London Smog | A contraction of fog and smoke that characterized air pollution episodes in London. Fog, with chemical and physical pollutants, remained there for four days in 1952 and 5 days in 1962. In 1952, 4000 people died while in 1962 about 700 died. |