Table of Contents Formation of Precipitation 3
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- Formation of Clouds
- Types of Clouds
Homework Assignment #1Fill in the blanks: A raindrop large enough to reach the ground without evaporating contains roughly ______________ times the water of a cloud droplet. The ______________________________________ is the way that rain droplets can form in supercooled clouds. In this method, supercooled water droplets collect more and more water and get larger. The _______________________________________ is the way that rain droplets can form below the freezing point, but giant ________________________________ must be present for water to cling to.
There are four ways that air can be cooled enough to condense or sublimate. Adiabatic cooling - temperature cools as the air becomes less dense Air cools because it has been mixed with other air masses Air cools because it is lifted by another air mass into a cooler region Advective cooling -temperature cools as the air moves over a cold surface Types of CloudsClouds are categorized by characteristics such as: Altitude, Appearance, Origin High Clouds Cirrus - high altitude wispy clouds 
Cirrocumulus - distinct patchy and/or wavelike appearance 
Cirrostratus - blanket sky in ill-defined sheets 
Middle Clouds Altocumulus - distinct cloud elements 
Altostratus – uniform, diffuse coverage 
Low Clouds Cumulus – puffy, noticeable vertical development. 
Stratocumulus - widely scattered, clustered together, or layered w/ little vertical development. 
Stratus - lowest of the low clouds, appear as an overcast deck but can be scattered 
Fog - low stratus cloud in contact with the ground 
Multi-Layer Clouds Nimbostratus Extends vertically through low and middle levels associated with large areas of continuous precipitation 
Cumulonimbus can produce lightning, thunder, heavy rains, hail, strong winds, and tornadoes can span all cloud layers anvil-shaped tops form because of stronger winds at higher levels of the atmosphere 
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