Appearance
Pyrocumulus is often grayish to brown in color, because of the ash and smoke associated with the fire. It also tends to expand because of the ash involved in the cloud's formation increase the amount of condensation nuclei. This poses a problem, as the cloud can trigger a thunderstorm, from which the lightning can start another fire.
Read more about this topic: Pyrocumulus Cloud
Famous quotes containing the word appearance:
“The aim of science is to apprehend this purely intelligible world as a thing in itself, an object which is what it is independently of all thinking, and thus antithetical to the sensible world.... The world of thought is the universal, the timeless and spaceless, the absolutely necessary, whereas the world of sense is the contingent, the changing and moving appearance which somehow indicates or symbolizes it.”
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