Questions and Answers
Fog is usually prevalent in industrial areas because of?
Under what condition does advection fog usually form?
Fog produced by frontal activity is a result of saturation due to?
Which in-flight hazard is most commonly associated with warm fronts?
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A situation most conducive to the formation of advection fog is?
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Advection fog has drifted over a coastal airport during the day. What may tend to dissipate or lift this fog into low stratus clouds?
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What lifts advection fog into low stratus clouds?
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In what ways do advection fog, radiation fog, and steam fog differ in their formation or location?
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With respect to advection fog, which statement is true?
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In which situation is advection fog most likely to form?
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In what localities is advection fog most likely to occur?
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What types of fog depend upon wind in order to exist?
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What situation is most conducive to the formation of radiation fog?
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Which conditions are favorable for the formation of radiation fog?
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Which weather condition can be expected when moist air flows from a relatively warm surface to a colder surface?
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Sudden penetration of fog can create the illusion of?
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Which conditions are necessary for the formation of upslope fog?
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When advection fog has developed, what may tend to dissipate or lift the fog into low stratus clouds?
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If the temperature/dew point spread is small and decreasing, and the temperature is 62°F, what type of weather is most likely to develop?
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Low-level turbulence can occur and icing can become hazardous in which type of fog?
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What is the most prevalent warning that radiation fog will form?
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Study Notes
Overview of Fog
- Fog develops due to condensation nuclei in industrial areas, resulting from combustion processes.
- Common forms of fog include advection fog, radiation fog, and steam fog, each with unique formation conditions.
Advection Fog
- Forms when moist air moves over colder surfaces, such as land or water.
- Most likely to occur with air masses moving inland from the coast during winter.
- Can dissipate into low stratus clouds with surface winds of approximately 15 knots or more.
Formation Conditions
- Advection fog can form suddenly at any time, day or night, and is generally more persistent than radiation fog.
- Requires wind to form; specifically, advection fog and upslope fog depend on moving air.
Radiation Fog
- Forms under specific conditions: warm moist air over flat, low-lying land on clear, calm nights.
- Favorable conditions include a clear sky, little to no wind, and a small temperature-dew point spread.
Frontal Activity and Fog
- Frontal fog results from the saturation due to evaporation of precipitation.
- Precipitation-induced fog, often associated with warm fronts, leads to lower visibility.
Localities and Hazards
- Coastal areas are prime locations for advection fog occurrence.
- Low-level turbulence and icing hazards are prevalent in steam fog conditions.
- Sudden fog penetration can create visual illusions, such as pitching up during flight.
General Conditions Favoring Fog
- Moist air flowing from warmer to cooler surfaces typically leads to fog formation.
- Little or no wind is a significant indicator of possible radiation fog development.
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Description
Test your knowledge on fog and its causes with these flashcards. This quiz covers various aspects of fog formation, including conditions for advection fog and the role of precipitation. Perfect for students studying meteorology or related fields.