GEOL 101 Lecture Notes - Lecture 6: Warm Front, Cold Front, Northern Canada
Document Summary
Fronts and storms: ocean currents, prevailing winds drive currents, westerly winds etc, on the west current are cool and moving towards the equator, loops (gyres) around the subtropical highs. In the northern hemisphere the gyres are due to the trade winds. All warm air is force up with intense precipitation. Storm dies out: midlatitude cyclones, cyclone is a center of low atmospheric pressure so a midlatitude cyclone is a migrating low pressure system (extratropical cyclone) [anti cyclone would be center of high pressure) 35 to 70 degrees n & s (westerlies) and may be 1000 miles across\ Pressure 990- 1000 mb (counterclockwise in the nh) (clockwise in. Sh: hurricanes, low pressure, np fronts, 100-600 miles across, pressure is low (950 mb or lower) and winds 65 knots , winds in hurricane turn counterclockwise in nh (eye of the storm )
