Earth Sciences 2240F/G Lecture Notes - Lecture 14: Landfall, Supercooling, Dew Point
18 Nov 2020
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Document Summary
Lifting mechanism: ultimate source of moisture for most storms in na are oceans. Differential heating: ground surface doesn"t heat evenly, causes pockets of warm air to rise. Cold fronts: 2 air masses of diff temp meet, boundary is called front, cold air masses more dense, move under warmer air causing uplift. Terrian: as air move across landscape and forced up over mountains, upslope thunderstorms can form. Multi-cell storms: last for several hours producing large hail, damaging winds, flash flooding. Last for hours, produce damaging winds and hail. Supercell: occur when winds turn clockwise with height and where there is change in wind speed/direction with height. Hurricanes: severe tropical storm that produces violent winds, high waves, flood. Storm surge: heavy waves as result of storm, very dangerous. Formation: slowly advancing, cold front encounters warm air mass moving opposite direction, boundary b/w 2 masses is not a straight line, rather bulge develops as warm air.
