IGNOU AEC 1 2018 - What is the difference in the two types of temperature inversion, that

Question

What is the difference in the two types of temperature inversion, that is, radiation inversion and subsidence inversion?

06 Mar 2018

Answer :

Word Count : 342

Radiation inversion:

The surface inversion produced by radiational cooling of lower air is called radiational inversion. The inversion layer develops at an altitude of about 90 meters. Nocturnal cooling produced by the terrestrial radiation is the principal factor for this type of temperature inversion.

Since a land surface radiates more heat than the air, ground is cooled more rapidly than the air at great heights during night time. Consequently the coldest air lies at the ground and is overlaid by warmer air.

The layers of air in close proximity to the earth's surface are cooled by the processes of radiation and conduction more quickly than the upper layers of air. Thus, at a certain height (90 meters) the temperature increases with attitude, and

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