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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2014, Vol. 11, No. 2, pp. 111-120

Structural characteristics of electrical turbulence for the vertical profile of electric field with a strong splash

L.A. Mikhailovskaya1 , N.S. Erokhin1,2 , I.A. Krasnova2  , S.N. Artekha1 
1 Space Research Institute RAS, Moscow, Russia
2 Peoples' Friendship University of Russia, Moscow, Russia
As it is known, the thunderstorm clouds contain charged subsystems. These subsystems create high electric fields of the orders of 100 kV/m. Such fields may facilitate generation of intense wind flows in the atmosphere and strengthening weak vortices. Therefore, for correct description of the charged subsystems’ role in the formation and subsequent dynamics of atmospheric vortex, it is necessary to analyze the structural characteristics of the electric fields in thunderstorm. In this paper, based on experimental data, an analysis of structural features of electrical turbulence Sm(L) is performed in the case of large splash of vertical electric field profile Ez(z) in thunderstorm at altitudes z < 12 km. The inertial ranges of electrical turbulence are investigated, scaling exponent, Hurst index values and kurtosis in them are obtained. Deviations of structural functions Sm(L) from the power-scaling law are identified in the inertial ranges. The analysis has shown that a generalized scale invariance of electrical turbulence does not hold for intervals of small scales and medium ones. It may be associated with intermittency of electric turbulence and the presence of coherent electrical structures. The results obtained can be used for subsequent assessments of the electrical subsystems role in the generation of self-consistent, essentially inhomogeneous structure of wind flows in atmospheric vortices, for a numerical simulation of nonlinear dynamics using parameterization schemes that take into account the electrical subsystem of vortices, as well as to identify opportunities on the vortex dynamics. Moreover, it is of interest for further development of methodologies for processing remote sensing data on atmospheric vortices, more complete and correct physical interpretation of experimental data processing results.
Keywords: charged subsystems of atmosphere, thunderstorm clouds, inertial range, turbulence, structure functions, intermittency, scaling.
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