BAvn Bachelor of Aviation Aviation Meteorology 2 — Questions and Answers
Question 1: What does a high-pressure system (anticyclone) typically produce in the Northern Hemisphere?
- Clockwise outflow with clear, stable weather (Correct answer)
- Counterclockwise inflow with stormy weather
- Strong updrafts and thunderstorms
- Persistent fog at all altitudes
Correct answer: Clockwise outflow with clear, stable weather
In the Northern Hemisphere, high-pressure systems have clockwise outflow and generally bring stable, clear weather.
Question 2: Which type of fog forms when warm, moist air moves over a cooler surface?
- Advection fog (Correct answer)
- Radiation fog
- Upslope fog
- Steam fog
Correct answer: Advection fog
Advection fog forms when warm, moist air flows horizontally over a cooler surface, cooling the air to its dew point.
Question 3: The jet stream is located near which atmospheric boundary?
- The tropopause (Correct answer)
- The stratopause
- The mesopause
- The boundary layer
Correct answer: The tropopause
Jet streams occur near the tropopause where strong temperature gradients between air masses create high-speed wind currents.
Question 4: What is a microburst?
- A concentrated downdraft that produces a short-lived but intense outflow of wind at the surface (Correct answer)
- A small tornado
- A localized area of clear-air turbulence
- A sudden pressure drop of 0.01 inHg
Correct answer: A concentrated downdraft that produces a short-lived but intense outflow of wind at the surface
A microburst is an intense downdraft smaller than 4 km in diameter that creates dangerous wind shear close to the ground.
Question 5: PIREP stands for which weather reporting term?
- Pilot Report (Correct answer)
- Pressure Index Report
- Precipitation Report
- Precision Instrument Report
Correct answer: Pilot Report
PIREP (Pilot Report) is a real-time weather observation submitted by pilots describing actual in-flight conditions.
Question 6: What does the dew point temperature indicate in aviation weather?
- The temperature to which air must be cooled to become saturated (Correct answer)
- The highest temperature recorded during a day
- The freezing level altitude
- The surface temperature of a runway
Correct answer: The temperature to which air must be cooled to become saturated
The dew point is the temperature at which air becomes saturated (100% relative humidity), indicating the likelihood of fog or cloud formation.
BAvn Bachelor of Aviation Aviation Meteorology 2
What does a high-pressure system (anticyclone) typically produce in the Northern Hemisphere?