DMPQ-Explain the phenomenon of Front formation. Also mention the different types of Front formation.

. It is an inclined zone along which two opposing air masses having contrasting characteristics in terms of air temperature humidity density pressure converged together.  An extensive transitional zone between two converging air masses is called a frontal zone. The frontal zone is inclined at a low angle to the Earth’s surface.

It is also a zone of intensification of low pressure, cooling of rising hot and humid air, condensation, cloud formation, and precipitation.

The process associated with the creation of a new front is called frontogenesis. The process of destruction or dying or dissolution of the front is called frontolysis.  In the northern hemisphere, frontogenesis happens in an anti-clockwise direction, and the southern hemisphere in the clockwise direction due to the Coriolis effect.

Stages of Front formation

Stationary Front: In this type two air masses having contrasting physical properties rest against each other without showing any major movement. Weather generally remains stable but sometimes it might rain. Atmospheric conditions are stable within the front however atmospheric conditions can suddenly change across the stationary front also.

Warm Front : When a warm air mass collides against the cold air mass, it rises above the cold air mass which is relatively heavier and denser. The warm front is a gently sloping frontal surface along which warm and light air becomes active and aggressive and rises slowly over cold and dense air. Due to this condensation takes place gradually.

Occluded Front: When warm air mass is completely raised over the cold air mass it is called an occluded front. Weather along this sector is complex—a mixture of cold front type and warm front type weather. These are common in western Europe.

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