Evidence for Coexisting Spectra of Stratified Turbulence and Internal Waves in Mesoscale Atmospheric Velocity Fields

摘要

This paper briefly reviews recently determined spectra of mesoscale horizontal winds. The implication of recently determined vertical velocity spectra as they pertain to the wave/turbulent processes which determine the mesoscale spectrum of atmospheric motions. It has been found that the mesoscale spectrum of atmospheric motions is dominated by quasi-horizontal eddies with pronounced vertical structure. Whenever the quasi-horizontal surfaces become inclined as in upper level frontal zones, vertical mixing will take place depending on the slope of the mixing surfaces. Keywords: Stratified turbulence; internal waves; mesoscale; Reprints.