Abstract:
Based on a two-scale hydrodynamic model considering the influence of turbulent pulsations on the average flow, a
mechanism is developed for generating vorticity of typhoons and tornadoes due to atmospheric turbulence. A wavelet-analysis
of pressure fluctuations in real atmospheric vortexes, tornadoes and hurricanes, Irene and Andrea is conducted in the paper.
The characteristic frequencies of atmospheric pressure fluctuations are found, also the estimates of the influence of turbulent
pulsations on the enhancement of vorticity in typhoons and tornadoes are obtained. The contribution of the turbulent
mechanism can be compared with the effect of the stretching of the vortex lines.