Dew

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Frozen Dew

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Frost

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Black Frost

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Haze

Hygroscopic aerosols Wet Haze with less than 75 % RH

Condensation nuclei needed to form fog or cloud

Hydrophobic aerosols

Fog

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Fog: A suspension of small visible water droplets (or ice crystals) in the air that reduce visibility at the earth's to less than 1,000 meters (5/8 miles).

Radiation Fog or Valley Fog

Radiation Fog or Valley Fog

Advection Fog

Up Slope Fog

Other Types of fogs:

* acid fog -- radiation fog that forms in polluted air with oxides of sulfur and nitrogen.

* evaporation (mixing) fog -- mixing of two unsaturated air masses (steam fog, winter breath, arctic sea smoke,steamy pavement).

* frontal fog -- a type of evaporation fog; moist air mixes with cooler air; can occur where warm air rides upover cold air (warm front).

Mixing Fog

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