Definitions for occluded front
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occluded front, occlusion(noun)
(meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft
An occluded front occurs when a cold front overtakes a warm front at the surface and a temperature contrast exists between the advancing and retreating cold air masses.
An occluded front is formed during the process of cyclogenesis when a cold front overtakes a warm front. When this occurs, the warm air is separated from the cyclone center at the Earth's surface. The point where the warm front and the occluded front meet is called the triple point. There are two types of occlusion, warm and cold. In a cold occlusion, the air mass overtaking the warm front is cooler than the cool air ahead of the warm front, and plows under both air masses. In a warm occlusion, the air mass overtaking the warm front is not as cool as the cold air ahead of the warm front, and rides over the colder air mass while lifting the warm air. A wide variety of weather can be found along an occluded front, with thunderstorms possible, but usually their passage is associated with a drying of the air mass. Additionally, cold core funnel clouds are possible if shear is significant along the cold front. Occluded fronts are indicated on a weather map by a purple line with alternating semicircles and triangles pointing in direction of travel. Occluded fronts usually form around mature low pressure areas.
The numerical value of occluded front in Chaldean Numerology is: 7
The numerical value of occluded front in Pythagorean Numerology is: 5
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"occluded front." Definitions.net. STANDS4 LLC, 2016. Web. 31 May 2016. <http://www.definitions.net/definition/occluded front>.