Boundary-Layer Meteorology

, Volume 10, Issue 1, pp 35–54 | Cite as

The stability analysis of an inflexion-free velocity profile and its application to the night-time boundary layer in the atmosphere

  • D. Fua
  • F. Einaudi
  • D. P. Lalas


The characteristics of waves excited in a stratified shear flow with a velocity profile monotonically increasing above the ground are calculated numerically. It is shown that unstable modes exist when the Brunt-Väisälä frequency of the ambient atmosphere decreases sufficiently fast with height. Their growth rates as a function of the horizontal wavelength and the local Richardson number are given, and a comparison between them and experimental data obtained for the night-time-boundary layer of the Earth's atmosphere is carried out. Finally, the characteristics of the singular neutral modes that the system can support are presented.


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Copyright information

© D. Reidel Publishing Company 1976

Authors and Affiliations

  • D. Fua
    • 1
  • F. Einaudi
    • 2
  • D. P. Lalas
    • 3
  1. 1.Cooperative Institute for Research in Environmental SciencesUniversity of Colorado/NOAABoulderUSA
  2. 2.Cooperative Institute for Research in Environmental SciencesUniversity of Colorado/NOAA and Aeronomy Laboratory, NOAABoulderUSA
  3. 3.Dept. of Mechanical Engineering SciencesWayne State UniversityDetroitUSA

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