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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, 2013, Vol. 10, No. 3, pp. 114-121

The analysis of generalized scale invariability for the electric field turbulence in thunderstorm clouds

I.A. Krasnova 1, N.S. Erokhin 2, N.N. Zolnikova 3, L.A. Mikhailovskaya 3
1 Peoples’ Friendship University, Moscow, Russia
2 Peoples’ Friendship University; Space Research Institute of RAS, Moscow, Russia
3 Space Research Institute of RAS, Moscow, Russia
As it is known the wind fluxes in intensive atmospheric vortices like tropical cyclones (TC) have the hydrodynamical helicity which increases their stability and the life time. Moreover tropical cyclones have charged subsystems (ECS) creating the large electric fields of the order of 100 kV/m which facilitate development of hurricanes and whirlwinds. So for the correct description of charged subsystems role in the generation of helical wind flows and their following dynamics inside the powerful atmospheric vortices it is necessary to analyze the structural characteristics of electric turbulence in thunderstorm clouds. Below on the basis of structure functions Sm (L) analysis it is described the results of investigation of generalized scale invariability possibility for electric turbulence by usage of experimental data on the electric field vertical profile in thunderstorm clouds for the heights z < 13 km. It has been considered the electric turbulence inertial intervals, scaling exponents, the magnitude of both Herst index and curtosis for these intervals. For inertial intervals it was revealed the Sm (L) deviations from power law scalings. It has been shown that for the small scales and middle ones the electric turbulence is closed enough to the generalized scale invariability law. The deviations from this law observed may be explained by the presence of both the turbulence intermittency and coherent electric structures. Results obtained may be used for the following estimates of electric subsystems role in the generation of selfconsistent, essentially inhomogeneous structure of wind fluxes in TC, for the numerical modeling of their nonlinear dynamics with usage of the parametrization schemes, taking into account the ECS, and to study the possibility of influence on TC dynamics. Besides these results are of great interest for the following development of methods for processing of remote sensing data on atmospheric vortices, more detailed and correct physical interpretation such data processing results.
Keywords: структурные функции, инерционные интервалы, электрическая турбулентность, скейлинговые экспоненты, грозовая облачность, обобщенная масштабная инвариантность, высотные распределения, structure functions, inertial intervals, electric turbulence, scaling exponents, thunderstorm clouds, generalized scale invariability, altitude distribution
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