Kelvin-Helmholtz billows in rising morning inversions

Wavelike motions (similar to Kelvin-Helmholtz billows, KHBs) within the rising inversion layers during the morning transition of the atmospheric boundary layer (ABL) are considered. The KHBs were depicted in sodar echograms obtained in a rural terrain near Moscow (Russia) in 2011. Power spectra of the intensity of the sodar return signal from inversion layers and from convective area underneath were calculated. Comparison of the dominant spectral maximums for the inversion and convective parts of the ABL showed a connection between convective plumes and KHBs.