Experimental assessment of the impact of short-term heavy showers on the turbulence characteristics in the ground atmosphere
A.Ya. Bogushevich, V.V. Kalchikhin, A.A. Kobzev, A.E. Telminov, A.A. Tikhomirov
Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
Keywords: shower precipitation, rainfall intensity, ultrasonic weather station, optical rain gauge, turbulent characteristics, atmospheric ground layer
Abstract
Atmospheric turbulence is one of the most significant factors affecting the propagation of waves of various nature and the operation of devices based on their application. The paper presents the results of experimental studies of the impact of short-term heavy rainfall on subsequent changes in the meteorological and turbulent state of the ground atmosphere based on processed synchronous acoustic and optical measurements of atmospheric parameters. An assessment is made of the impact of intense precipitation on the main turbulent characteristics of the surface atmosphere, such as the energy of temperature and wind fluctuations and vertical heat and momentum fluxes. It is shown that heavy rainfall significantly changes these characteristics. The results can be used to interpret optical and acoustic measurements used to study the atmosphere.
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