What is a temperature inversion and how is this phenomena related to air pollution?

Answer 1

A temperature inversion is a meteorological phenomenon in which air temperature increases with height for some distance above the ground, as opposed to the normal decrease in temperature with height. This effect, which can be caused by a number of different factors, can lead to pollution such as smog being trapped close to the ground, with possible adverse effects on health.

Answer 2

This happens all the time in areas where the pollution source (like a city) is in a basin-like terrain. A temperature inversion is where a cold mass of air sits on top of a warm mass. Usually, warm air will rise and cold air sinks. This convective flow creates winds that blow as the air masses try to seek equilibrium with the warm air on top and the cold air on the bottom. With a temperature inversion, the warm air above cooler air acts like a lid, suppressing vertical mixing and trapping the cooler air at the surface. As pollutants from vehicles, fireplaces, and industry are emitted into the air, the inversion traps these pollutants near the ground, leading to poor air quality.

Answer 3

temperature inversion, condition in which the temperature of the atmosphere increases with altitude in contrast to the normal decrease with altitude. When temperature inversion occurs, cold air underlies warmer air at higher altitudes. Temperature inversion may occur during the passage of a cold front or result from the invasion of sea air by a cooler onshore breeze. Overnight radiative cooling of surface air often results in a nocturnal temperature inversion that is dissipated after sunrise by the warming of air near the ground. A more long-lived temperature inversion accompanies the dynamics of the large high-pressure systems depicted on weather maps. Descending currents of air near the center of the high-pressure system produce a warming (by adiabatic compression), causing air at middle altitudes to become warmer than the surface air. Rising currents of cool air lose their buoyancy and are thereby inhibited from rising further when they reach the warmer, less dense air in the upper layers of a temperature inversion. During a temperature inversion, air pollution released into the atmosphere's lowest layer is trapped there and can be removed only by strong horizontal winds. Because high-pressure systems often combine temperature inversion conditions and low wind speeds, their long residency over an industrial area usually results in episodes of severe smog.

Answer 4

Temperature Inversion Phenomenon

Answer 5

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One of the conditions required for the formation of radiation fog is ground inversion.When this fog mixes with industrial smoke,we get smog which contributes to air pollution.