15 / 20
When do cold occlusions occur most frequently in Europe?
  • A
    Winter and spring
  • B
    Winter
  • C
    Autumn and winter
  • D
    Summer

Refer to figures.

OCCLUDED FRONT. If a cold front catches up to and overtakes a warm front, the frontal boundary created between the two air masses is called and occluded front. When the cold front catches up with the warm front, the warm sector is lifted.

WARM OCCLUSION: the air ahead of the warm front is colder than the air behind the cold front.

  • The cold air behind the cold front rises over colder air ahead of the warm front.
  • In Europe, Warm occlusions occur most frequently during winter.
COLD OCCLUSION: the air behind the cold front is colder than the air ahead of the warm front.
  • The cold air behind the cold front undercuts the less cold air ahead of the warm front.
  • In Europe, Cold occlusions occur most frequently during summer when colder air propagates from sea over warm continent.

Your Notes (not visible to others)



This question has appeared on the real examination, you can find the related countries below.