Steam fog forms when cold air moves over warm water, causing water vapor to mix and condense into fog. This is known as which fog type?

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Multiple Choice

Steam fog forms when cold air moves over warm water, causing water vapor to mix and condense into fog. This is known as which fog type?

Steam fog forms when cold air moves over warm water. The warmth keeps the water evaporating, so water vapor enters the chilly air. Because the air is cold, it can’t hold all that moisture, and the vapor condenses into tiny droplets right near the surface, creating fog. This is specifically the fog produced by evaporation from the water surface into cold air, often seen over lakes when the air is frosty but the water is still relatively warm. It’s different from radiation fog (which forms from surface cooling at night), advection fog (moist air moving over a cooler surface), and upslope fog (air rising up terrain and cooling).

Steam fog forms when cold air moves over warm water. The warmth keeps the water evaporating, so water vapor enters the chilly air. Because the air is cold, it can’t hold all that moisture, and the vapor condenses into tiny droplets right near the surface, creating fog. This is specifically the fog produced by evaporation from the water surface into cold air, often seen over lakes when the air is frosty but the water is still relatively warm. It’s different from radiation fog (which forms from surface cooling at night), advection fog (moist air moving over a cooler surface), and upslope fog (air rising up terrain and cooling).

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