On the physics of stratospheric (nacreous) cloud formation



    1. Advanced Study Program, National Center for Atmospheric Research,2 Boulder, Colorado 80302, USA
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    • 1

      On Faculty Improvement Leave (Sept. 1972-Aug. 1973) from the Physics Department of Iowa State University, Ames, Iowa 50010.

  • 2

    The National Center for Atmospheric Research is sponsored by the National Science Foundation.


The purpose of this note is to point out that conjectures that stratospheric lee waves might be able to produce the required additional cooling necessary for nacreous (mother-of-pearl) cloud formation in the lower stratosphere are in good agreement with recent experimental results obtained by Lilly and co-workers for mountain-induced lee waves. A recent conjecture of a very moist stratosphere to account for the formation of stratospheric clouds thus appears unnecessary.