AOSC 200 Lecture 15: Lecture 16
10 Apr 2018
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Document Summary
Warm air moves up and over cold air warm front. Cold front overtakes warm front, warm is lifted up and creates strong weather. Fronts are the boundaries between two air masses. Cold front is the forward border of a cold air mass which is pushing a warm air mass. A mid-latitude cyclone is an area of low pressure located between 30 degrees and 60 degrees latitude. Norwegian scientists in bergen, developed a model that explains the life cycle of an extratropical storm: a storm that forms in mid-latitudes, outside the tropics. Vilhelm bjerknes, his son jacob, halvor solberg and tor bergeron published after wwii the polar front theory of a developing wave cyclone. Where do midlatitude cyclones tend to form. A cyclone begins when cold air pushes from the north, changing a stationary front into separate cold and warm fronts. Warm air advances poleward and forms a warm front. Cold air moves toward equator and forms a cold front.
