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28 Cards in this Set
- Front
- Back
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Prefix for rain producing clouds?
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Nimbo
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Clouds named based on ___ and ____
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Height and shape
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___ Pressure is ____ air
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Low, rising
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___ pressure is ____ air
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high, sinking
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Convergence: ____ pressure (rainy, cloudy)
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low
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Divergence= ____ pressure (clear sunny)
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high
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how is advection fog formed?
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warm moist stable air slowly moving horizontally over a colder surface.
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Cirro
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high
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Alto
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Middle
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2 precipitation processes
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Bergeron (cold air), and collision/coalescence (warm air)
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What is Virga?
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Precipitation that evaporates before it reaches the ground
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How is sleet formed?
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Freezing precipitation: Snow, melts into rain, refreezes into ice.
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What are the 2 most common cloud-seeding materials
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Silver Iodide and dry ice
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What is the term given for dry air infiltration into a moist parcel of air
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entrainment
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3 lapse rates associated w/adiabatic temperature change, consistent with which variable?
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Environmental= variable
dry=constant wet=variable |
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warm air
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low pressure
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moist air
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less pressure than dry air, lower pressure
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wind speed and direction are controlled by what 3 forces?
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pressure gradient, coriollis force, and friction.
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What type of pressure is located near 30 degrees N and S
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Subtropical high; high pressure system (horse latitudes)
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Hadley forgot:
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rotation
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name of the large low pressure system that migrates within the tropical latitude and is associated w/ high precipitation
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ITCZ
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Isobars
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Lines that connect equal points of pressure
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Gradual pressure gradient:
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High pressure
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Steep pressure gradient:
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Low pressure (strong winds)
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What is coriolis force?
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Rotation force, strong further away from equator. 0 at equator.
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Winds are deflected in what direction in northern hempisphere?
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High:Right, low: left
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winds are deflected in what direction in the southern?
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High: Left, Low: right
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The balance between the coriolis force and pressure gradient force causes what type of winds?
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Geostrophic Winds
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