EESD09H3 Lecture Notes - Lecture 5: Anticyclone, Polar Front, Cyclogenesis
11 Dec 2019
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Document Summary
Polar front theory (cyclogenesis: midlatitude cyclones and associated weather events. Commonly referred to as a low or low pressure or frontal system . Major weather maker in the midlatitudes (35o 60o) Most storms in southern ontario in the fall, winter, spring are midlatitude cyclones. 100s to 1000s km in extent (larger than hurricanes) Can have thunderstorms and tornadoes associated with them (cold front) Cyclones are associated with clouds, precipitations, and winds. Exhibit a characteristic pattern as they move from west to east. The first sign of a cyclone approaching from the west is the cirrus clouds that appear roughly 12 to 24 hours in advance of the warm front. Anticyclonic weather is characterized by clear skies and light winds. Clear skies are also caused by sinking air that can cause very high temperature in summer. Polar front region between polar and ferrel cells. Midlatitudes - battle ground between cp (continental polar) and mt (maritime tropical)
