In the extratropical cyclone’s warm sector (the area between the warm front and
ID: 232771 • Letter: I
Question
In the extratropical cyclone’s warm sector (the area between the warm front and the advancing cold front), surface winds are likely to be producing [(cold)(warm)] air advection. To the north and west of the center of a Low pressure extratropical cyclone, surface winds are likely to be producing [(cold)(warm)] air advection. Dewpoints are likely to be relatively high to the [(southeast)(northwest)] of the cyclone’s center. As the cyclone progresses across Earth’s surface, the cold and warm fronts rotate about the center of low pressure. The motion of the storm system has similarities to that of a flying Frisbee®, that is, a Frisbee spins as it sails through the air (simultaneously exhibiting rotational and translational motions). Typically, the cold front rotates about the center of the low faster than the warm front. Consequently, the extent of the warm sector occupied by relatively warm and humid air at the surface [(shrinks)(increases)]. Eventually the cold front catches up with and merges with the warm front forming an occluded front. At this stage in the life cycle of an extratropical cyclone (known as occlusion), the storm often begins to weaken as the central air pressure begins to [(fall)(rise)]. What fits into the parenthesis's to make the question accurate and can I get a explanation for a better understanding?
Explanation / Answer
1) In the extratropical cyclone’s warm sector (the area between the warm front and the advancing cold front), surface winds are likely to be producing warm air advection.
2) To the north and west of the center of a Low pressure extratropical cyclone, surface winds are likely to be producing cold air advection.
3) Dewpoints are likely to be relatively high to the southeast of the cyclone’s center.
4) Consequently, the extent of the warm sector occupied by relatively warm and humid air at the surface shrinks.
5) At this stage in the life cycle of an extratropical cyclone (known as occlusion), the storm often begins to weaken as the central air pressure begins to rise.