Clouds - Adiabatic heating/cooling o Adiabatic temperature...

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Adiabatic heating/cooling o Adiabatic temperature changes occur when Air is compressed Motion of air molecules increases Air will warm Descending air is compressed due to increasing air pressure Air expands Air parcel does work on the surrounding air Air becomes cooler Rising air expands owing to decreasing air temperature o Adibatic rates Dry adiabatic rate Unsaturated air Rising air expands and cools at 10 C per 1000 meters (5.5 F per 1000 feet) Descending air is compresses and warms at 10 C per Wet adiabatic rate Commences at condensation level Air has reached the dew point Condensation is occurring and latent heat is being liberated Heat released by the condensing water reduces the rate of cooling Rate varies from 5 C to 9 C per 1000 meters Process that lifts air o Orographic lifting Elevated terrains act as barriers Result can be a rain shadow desert o Frontal wedging Cool air acts as a barrier to warm air
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This note was uploaded on 04/09/2008 for the course GEOL 1030 taught by Professor Abolins during the Fall '08 term at Middle Tennessee State University.

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Clouds - Adiabatic heating/cooling o Adiabatic temperature...

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