Earth Sciences 2240F/G Study Guide - Final Guide: Cumulus Cloud, Outflow Boundary, Atmospheric Instability
14 Dec 2017
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Moisture (closer to body of water means more thunder storms) Differential heating: thermals: pockets of warm air caused by uneven heating of the ground. Cold fronts: front: boundary when two air masses of different temperatures meet, as cold dense air moves below less-dense warm air, the uplift of moist unstable air results in a thunderstorm along the front. Towering cumulus stage: cumulus cloud grows vertically. Mature stage: air movement both upwards and downwards. Stronger the updraft, the more rain and hail that can be supported: most dangerous stage, lightening, hail and strong winds all present. Multi-cell thunderstorm: last several hours procuring hail, damaging winds, flash flooding and isolated tornados. Storm continues by gust front lifting warm moist air. Super cell thunderstorms: occurs when winds change in speed or direction with height. What conditions are required for hurricane formation? sustained light winds blowing over warm oceans. Cold front encounters a warm air mass moving in opposite direction.
