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:
“Though an unpleasant sort of person, and even a queer threatener withal, yet, if one meets him, one must get along with him as one can; for his ignorance is extreme. And what under heaven indeed should such a phantasm as Death know, for all that the Appearance tacitly claims to be somebody that knows much?”
—Herman Melville (1819–1891)
“Most lovers ... picture to themselves, in their mistresses, a secret reality, beyond and different from what they see every day. They are in love with somebody else—their own invention. And sometimes there is a secret reality; and sometimes reality and appearance are the same. The discovery, in either case, is likely to cause a shock.”
—Aldous Huxley (1894–1963)
“Every natural fact is a symbol of some spiritual fact. Every appearance in nature corresponds to some state of the mind, and that state of the mind can only be described by presenting that natural appearance as its picture.”
—Ralph Waldo Emerson (1803–1882)