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create a uniform white to gray sheet that covers most to all of the sky with the sun or moon as a visible bright spot.
have a scalloped bottom that appears to be long parallel rolls or broken rounded patches.
Fog caused by cooling
As the air cools, it becomes denser and drains into low areas such as river valleys, where thick fog accumulations may occur.
Fog caused by evaporation
When cool air moves over warm water, enough moisture may evaporate from the water surface to produce saturation.
The Bergeron Process
A scientific theory that relates the formation of precipitation to supercooled clouds, freezing nuclei, and the different saturation levels of ice and liquid water.
is the condition of water droplets that remain in the liquid state at temperatures well below 0oC.
is the condition of air that is more concentrated than is normally possible under given temperature and pressure conditions.
Collision- coalescence process
a theory of raindrop formation in warm clouds (above 0oC) in which large cloud droplets collide and join together with smaller droplets to form a raindrop.
The type of precipitation that reaches Earth's surface depends on
the temperature profile in the lower few kilometers of the atmosphere.
At very low temperatures (when the moisture content of air is low) light fluffy snow made up of individual six-sided ice crystals forms.
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