EESD09H3 Lecture Notes - Lecture 2: Ultraviolet, Air Mass, Thermosphere
11 Dec 2019
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Document Summary
The basics of atmosphere: composition, observing the atmosphere, vertical structure of the atmosphere, all about clouds s. Forces in the atmosphere: air mass classification. The thickness of the atmosphere is only about 2%of earth"s thickness. Because of the shallowness, its motions are primarily. Horizontal wind speeds are a thousand time greater than vertical windspeeds. Temperature increases with height due to the absorption of ultraviolet radiation by ozone. Ozone in the stratosphere protects the life on earth from the lethal effects of ultraviolet radiation. Temperature decreases with altitude in this layer, the absorbed heat at the base is dispersed by vertical air motions. Temperature increases with height due to the absorption of solar radiation by nitrogen and oxygen molecules, which also releases kinetic energy of motion. Cloud nomenclature: stratus, strato - layer clouds. Stratocumulus: cumulus, cumulo - puffy" clouds. Cirrocumulus: cirrus, cirro - high clouds. Cirrocumulus: nimbus, nimbo - rain clouds, alto - middle clouds.
