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Numerical simulation of formation of cyclone vortex flows in the intratropical zone of convergence and their early detection

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Abstract

Mechanisms of formation of cyclonic vortices in the tropical atmosphere of the Earth are investigated in the intratropical zone of convergence using numerical simulation made with the complete system of equations of gas dynamics taking into account transport of infrared radiation, phase transitions of water vapor into microdrops of water and ice particles, and sedimentation of these drops and ice particles in the field of gravity force. Observational data on the structure of dominant air streams, which are formed in the intratropical zone of convergence over the North Atlantic in the periods of its highest thermodynamic intensity and instability, are used in the initial and boundary conditions of the model. Formation of cyclonic vortex flows is obtained numerically at sufficiently strong bending of the intratropical zone of convergence. The results of numerical modeling are compared with the data of satellite microwave monitoring: global radio thermal fields of the Earth from the electronic collection GLOBAL-Field allowing one to study the structure of atmospheric motions in a wide range of space-time scales.

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Authors and Affiliations

  1. Polar Geophysical Institute, Kola Scientific Center of Russian Academy of Sciences, Apatity, Russia

    I. V. Mingalev, K. G. Orlov, V. S. Mingalev & O. V. Mingalev

  2. Space Research Institute, Russian Academy of Sciences, ul. Profsoyuznaya 84/32, Moscow, 117810, Russia

    N. M. Astaf’eva

  3. Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, Miusskaya pl. 4, Moscow, 125047, Russia

    V. M. Chechetkin

Authors
  1. I. V. Mingalev
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  2. N. M. Astaf’eva
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  3. K. G. Orlov
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  4. V. M. Chechetkin
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  5. V. S. Mingalev
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  6. O. V. Mingalev
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Correspondence to I. V. Mingalev.

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Original Russian Text © I.V. Mingalev, N.M. Astaf’eva, K.G. Orlov, V.M. Chechetkin, V.S. Mingalev, O.V. Mingalev, 2012, published in Kosmicheskie Issledovaniya, 2012, Vol. 50, No. 3, pp. 242–257.

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Mingalev, I.V., Astaf’eva, N.M., Orlov, K.G. et al. Numerical simulation of formation of cyclone vortex flows in the intratropical zone of convergence and their early detection. Cosmic Res 50, 233–248 (2012). https://doi.org/10.1134/S0010952512020062

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  • DOI: https://doi.org/10.1134/S0010952512020062

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