Under which of the following condition(s) the occluded fronts are created ?
- 1. When the front remains stationary
- 2. When cold air mass moves to warm air mass
- 3. When warm air mass moves to cold air mass
- 4. When an air mass is fully lifted above the land surface
Select the correct answer using the code given below :
1 and 2
2 and 3
3 and 4
4 only
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC CAPF – 2015
– Occluded fronts typically form when a faster-moving cold front overtakes a warm front.
– As the cold front catches up to the warm front, the colder, denser air behind the cold front lifts the warmer, less dense air of the warm sector completely off the ground.
– The defining characteristic of an occluded front is that the warm air mass is no longer in contact with the surface; it has been lifted entirely aloft by the converging colder air masses (either cold occlusion where the air behind the cold front is colder than the air ahead of the warm front, or warm occlusion where the air behind the cold front is warmer than the air ahead of the warm front).
– Statement 4 accurately describes this condition of the warm air mass being lifted above the surface, which is central to the formation and nature of an occluded front.
– Statements 1, 2, and 3 describe conditions related to stationary fronts (1), cold fronts (2), and warm fronts (3), respectively, but not the specific mechanism or state characteristic of an occluded front.