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Cards In This Set
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The hierarchy of atmospheric circulations from tiny gusts to giant storms.
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Scales of motion
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The smallest scale of atmospheric motions
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Microscale
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The scale of meteorological phenomena that range in size from a few km to about 100 km. It includes local winds, thunderstorms and tornadoes.
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Mesoscale
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The typical weather map scale that shows features such as high and low pressure areas and fronts over a distance spanning a continent. Also called the cyclonic scale.
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Synoptic scale
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The largest scale of atmospheric motion. Sometimes called the global scale.
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Planetary scale
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Turbulent eddies that form downwind of a mountain chain, creating hazardous flying conditions.
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Rotor
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The rate of change of wind speed direction over a given distance.
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Wind shear
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Turbulence encountered by aircraft flying through cloudless skies. Thermals, wind shear, and jet streams can each be a factor in producing CAT.
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Clear air turbulence (CAT)
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Air flow resulting primarily from the heating and cooling of air.
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Thermal circulation
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A coastal local wind that blows from the ocean onto the land. the leading edge of the breeze is breeze front.
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Sea breeze
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A coastal breeze that blows from land to sea, usually at night.
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Land breeze
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A wind system that reverses direction between winter and summer. Usually the wind blows from land to sea in winter and from sea to land in summer.
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Monsoon wind system
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A local wind system of a mountain valley that blows downhill at night (mountain breeze) at night and uphill (valley breeze) during the day.
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Valley breeze
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S
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Mountain breeze
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Any wind blowing downslope. It is usually cold.
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Katabatic wind
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