Oxford, Aviation Meteorology
Occlusions: DGCA Aviation Meteorology questions
An occlusion forms when the cold front of a depression catches the warm front and lifts the warm sector off the ground. Which of the two cold air masses is colder decides the weather you fly through.
Most of these 16 questions are chart work: you read cross sections and plan views from appendices and say what cloud, precipitation, icing or turbulence lies at a marked point. Exam sessions account for 1 of the set.
In a warm occlusion the air behind the cold front is less cold than the air ahead of the warm front, so the cold front rides up over it and an upper cold front runs ahead of the surface front. In a cold occlusion the colder rear air undercuts instead.
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Question 1 of 5
The cloud in grid square M11 is most likely to be:
Question 2 of 5
Precipitation will reach the ground mainly in the area:
Question 3 of 5
In grid square M6 the worst cloud conditions for flying could be:
Question 4 of 5
Which of the conditions below would lead to the worst icing condition:
Question 5 of 5
Refer to Appendix 'B'. In a warm occlusion flying at 20000' where will the most turbulence be found?
11 more questions in this chapter
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