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- Radiation Fog. Radiation fog forms at night when the surface cools, causing the air above it to cool as well. If the air has enough moisture, this cooling will lead to saturation and form fog.
- Advection Fog. Advection fog forms when warm, moist air moves over cooler ground or water. It is relatively shallow and often associated with an inversion.
- Upslope Fog. Upslope fog forms when moist air flows upward over rising terrain, causing it to cool adiabatically to its dew point temperature. “Adiabatic” is a word used to describe the process that causes rising air to cool and sinking air to warm.
- Steam Fog. Steam fog, also known as evaporation fog, forms when cold air comes into contact with warm water. The warmer water evaporates into the cooler air above, increasing the air’s moisture content.
Sea Smoke. Steaming Fog. Frost Smoke. Steam Fog, also known as Steaming Fog, Evaporation Fog, Frost Smoke, Sea Smoke or Arctic Sea Smoke, occurs when evaporation takes place into cold air lying over warmer water. It is usually quite shallow. Steam Fog should not be confused with Advection Fog which is formed in warm moist air over a cold surface.
Steam fog forms when cold air moves over warm water. When the cool air mixes with the warm moist air over the water, the moist air cools until its humidity reaches 100% and fog forms. This type of fog takes on the appearance of wisps of smoke rising off the surface of the water. The other type of evaporation fog is known as frontal fog.
Nov 5, 2021 · This specific type of fog usually forms in the fall when cold air begins rolling back into a forecast. The air drops in temperature but the rivers, lakes and streams are still relatively warm. If ...
- Ellen Bacca
May 10, 2019 · The thin, warm, moist layer of air over the pond then mixes with the cooler air from the land. As it cools, condensation occurs and a fog forms. It looks like steam rising off the water, hence the ...
Steam Fog. Heat and moisture are transferred from the warm water to the cooler, drier air. the heat and moisture transfer occurs in a shallow layer near the lakes surface.
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Mar 30, 2024 · Steam fog is commonly observed over lakes and streams on cold autumn mornings as well as in polar regions. It is sometimes confused with ice fog, but its particles are entirely liquid. At temperatures below -29°C (-20°F), these may freeze into droxtals and create a type of ice fog that may be known as frost smoke. Categories: Terms.
