MID LATITUDE CYCLONES. Grade 11 & 12 Climatology. What is a mid latitude cyclone. Explanation of the numbers above: The LP is caused by rising air. Air converges towards the LP area before rising. The centre is marked by an L on a synoptic weather map.
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Grade 11 & 12
The LP is caused by rising air.
Air converges towards the LP area before rising.
The centre is marked by an L on a synoptic weather map.
Air rotates in a clockwise direction around a LP centre (for the Southern hemisphere; the opposite occurs in the Northern hemisphere).
Isobar readings decrease towards the centre.
The rising air leads to cloudy weather / rain.How do cyclones behave
The two air massess meet but they do not mix
The meeting of these different winds creates a disturbance in the frontal surface which forms a wave in the polar front. The wave grows and intensifies, and forms a wedge of warm air penetrating the cold air. Low pressure forms at the point of the wave, and air begins to rotate in a clockwise direction (Southern Hemisphere).