Oxford, Aviation Meteorology
Thunderstorms: DGCA Aviation Meteorology questions
Cumulonimbus is the most dangerous cloud a pilot can meet, with severe turbulence, icing, hail, lightning and violent downdraughts packed into one cell.
These 15 questions follow a cell from the cumulus stage through maturity to dissipation, with triggers, hail growth, microbursts, avoidance distances and chart symbols along the way. Exam sessions show 2 of them.
Downdraughts begin in the mature stage, when precipitation starts to fall, and take over the whole cell as it dissipates, while the cumulus stage holds updraughts only. Lightning strikes on aircraft are most common close to the freezing level.
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Question 1 of 5
The conditions which must exist to allow thunderstorms to develop are:
Question 2 of 5
When moist air moves across France in the . . . . . . . . . . TS activity is common in southern UK in the . . . . . . . . . . Complete the above statement correctly using one of the following:
Question 3 of 5
Hazards of the mature stage of a TS cell include lightning, turbulence and:
Question 4 of 5
On a significant weather chart the thunderstorm symbol signifies:
Question 5 of 5
Thunderstorms require a trigger action to release the conditional instability. Which of the following would be the least suitable as a trigger?
10 more questions in this chapter
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