ATPL Meteorology 2 — Questions and Answers
Question 1: Clear Air Turbulence (CAT) is most commonly associated with:
- Fog banks
- Jet streams and wind shear (Correct answer)
- Radiation inversions
- Sea breezes
Correct answer: Jet streams and wind shear
CAT occurs most frequently near jet streams where strong wind shear creates turbulence in otherwise cloud-free air, making it difficult to detect visually.
Question 2: Structural icing is most severe in which cloud type?
- Cirrus
- Stratus
- Cumulus
- Cumulonimbus (Correct answer)
Correct answer: Cumulonimbus
Cumulonimbus clouds contain large supercooled water droplets and intense updrafts, making them the source of the most severe structural icing conditions.
Question 3: Which front typically produces the most widespread precipitation and gradual weather deterioration?
- Cold front
- Warm front (Correct answer)
- Occluded front
- Stationary front
Correct answer: Warm front
Warm fronts produce widespread, stratiform precipitation ahead of the front as warm air slowly rises over cooler air, causing gradual weather deterioration over a large area.
Question 4: Microburst windshear is primarily dangerous to aircraft during:
- Cruise at high altitude
- Takeoff and landing (Correct answer)
- Descent through FL200
- Holding patterns
Correct answer: Takeoff and landing
Microbursts are most hazardous during takeoff and landing because the rapid change from headwind to tailwind causes a sudden loss of airspeed and lift at low altitudes.
Question 5: The freezing level is the altitude at which:
- Clouds stop forming
- Atmospheric temperature equals 0°C (Correct answer)
- Wind speed exceeds 100 knots
- Humidity reaches 100%
Correct answer: Atmospheric temperature equals 0°C
The freezing level is the altitude where the outside air temperature is 0°C; above this level, supercooled water droplets exist that can freeze on aircraft surfaces.
Question 6: What is a PIREP used for in aviation meteorology?
- Predicting runway conditions 24 hours ahead
- Reporting actual weather conditions observed by pilots in flight (Correct answer)
- Issuing departure clearances
- Documenting fuel loads
Correct answer: Reporting actual weather conditions observed by pilots in flight
A PIREP (Pilot Weather Report) is a report of actual meteorological conditions observed by a pilot while in flight, providing real-time data not captured by ground stations.
ATPL Meteorology 2
Clear Air Turbulence (CAT) is most commonly associated with: