ATOC 181 Lecture Notes - Thunderstorm, Vertical Draft, Lightning
5 Dec 2013
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Atoc 181 assignments #4: the rising or setting sun appears elliptical due to the refraction of light by the atmosphere. The atmosphere bends the rays from a rising or setting sun because light rays from the lower part of the sun are bent more than those form the upper part so the sun appears elliptical. Rayleigh scattering leaving behind colors with longer wavelengths such as yellow, orange, and red. The clouds that exist before the passage of a cold front are usually cirrus, cirrostratus. During the front passage clouds such towering cumulus (cumulus congestus) or cumulonimbus exist and after passage when the ground. After the cold front passes cumulus and stratocumulus clouds appear after the ground is warmer. The pressure falls before the cold front passes and drops to the lowest during the passing and then increases suddenly and continues to rise after the cold front passes.
