Date post: | 17-Jan-2016 |
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Cloud Formation Mechanisms
A little quiz…
Cloud Formation Mechanisms
Cloud Formation: In General
• Moist air cools to dew point.
• Dew Point = temp. for saturation of air.
• When air temp < DP, air is supersaturated.
• Condensation or sublimation occurs.
• Air must be lifted to get it to cool.
Methods of Lifting
• Orographic lifting
• Frontal action
• Convergence
• Convection
Orographic Lifting
Warm Moist Air
Dew Point
Orographic Clouds overSanta Catalina Mountains
Warm Frontal Action
Warm Moist Air
Cold Dense Air
Surface of Ground
Dew Point
Cold Front Action
Surface of Ground
Warm Moist Air
Cold Dense Air
Dew Point
Cold Front Clouds Forming
Convergence
Surface of Ground
Dew Point
ITCZ Wind Convergence & Clouds
ITCZClouds
Northeast Trades
Southeast Trades
Cyclonic Convergence
L
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Convection
Radiation
Convection
Convection Clouds
Convection Over Lake Michigan
Warm WaterWarm Water
Cold AirCold Air
Warmed AirWarmed AirConductionConduction
ConvectionConvection
Methods of Lifting
• Orographic lifting
• Frontal action
• Convergence
• Convection
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