Article

Boundary-Layer Meteorology

, Volume 10, Issue 1, pp 35-54

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

  • D. FuaAffiliated withCooperative Institute for Research in Environmental Sciences, University of Colorado/NOAA
  • , F. EinaudiAffiliated withCooperative Institute for Research in Environmental Sciences, University of Colorado/NOAA and Aeronomy Laboratory, NOAA
  • , D. P. LalasAffiliated withDept. of Mechanical Engineering Sciences, Wayne State University

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

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.