Kelvin-Helmholtz billows in rising morning inversions

Turbulence, Atmosphere and Climate Dynamics

生态环境科学

Kallistratova, M.A.^1 ; Petenko, I.V.^1^2 ; Kouznetsov, R.D.^1^3 ; Kuznetsov, D.D.^1 ; Lyulyukin, V.S.^1 ; Perepelkin, V.G.^1

A M Obukhov Institute of Atmospheric Physics RAS, Pyzhevskiy 3, Moscow

119017, Russia^1

Institute of Atmospheric Sciences and Climate, CNR, Via Fosso del Cavaliere 100, Roma

00133, Italy^2

Finnish Meteorological Institute, Erik Palmnin aukio 1, Helsinki

00560, Finland^3

关键词: Convective plume;    Kelvin-Helmholtz billows;    Power-spectra;    Return signals;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/231/1/012025/pdf
DOI  :  10.1088/1755-1315/231/1/012025

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Wavelike motions (similar to Kelvin-Helmholtz billows, KHBs) within the rising inversion layers during the morning transition of the atmospheric boundary layer (ABL) are investigated. 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 were calculated from inversion layers and from convective areas underneath. Comparison of the dominant spectral maximums for the inversion and convective parts of the ABL show connection between convective plumes and KHBs.