ERTH 2415 Lecture Notes - Lecture 6: Latent Heat, Viscous Liquid, Cumulus Cloud
28 Aug 2018
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Document Summary
Climate and weather: climate, meteorological elements and phenomena averaged over a long period of time for a region of the earth"s surface. Phenomena: hail, frost, fog, etc: long-term variations. A few days to a few years. Troposphere: most weather activity occurs in the troposphere, warmer air and higher pressure at the base, colder air and lower pressure at the top, tropopause: boundary between troposphere and stratosphere (8-18 km) Cold air: expands in volume, expands in volume, less dense, low pressure, less dense, low pressure, rises, holds more humidity, molecules move more, rises, holds more humidity, molecules move more, unstable, unstable. Movements of air horizontal movement: wind, horizontal movement of air from regions of high pressure to regions of low pressure. As one cell dies, another may develop nearby. Typical cell diameter 20 km: 3 stages of development. Thunderstorms occur when warm and moist air is lifted upward. Cold, dense air undercuts warm, less-dense air.
