Physics of auroral phenomena : proceedings of the 36th Annual seminar, Apatity, 26 February – 01 March, 2013 / [ed. board: A. G. Yahnin, A. A. Mochalov]. - Апатиты : Издательство Кольского научного центра РАН, 2013. - 215 с. : ил., табл.

I. V. Mingalev et al. absorption / emission of infrared radiation, as well as due to phase transitions of water vapor to micro drops of water and ice particles, which play an important role. The finite-difference method and explicit scheme are applied for solving the system of governing equations. The calculated parameters are determined on a uniform grid. The latitude step and longitude step are equal to 0.08°, and height step is equal to 200 m. More complete details o f the applied regional mathematical model may be found in the studies of Belotserkovskii et al. [2006,2009]. 30 25 20 15 10 •5 25 20 . 15 10 ■ 5 0 ^ j i j i j ^ ^ ' J I ■' \ \ \ \ \ \ \ \ \ \ \ \ \ N \ \ ' \ I \ 1 1 I t ! I \ \\\\\\\\\\\\\\\\\\\\\\\\\ \\\ \\\\\\\\\\ S \ \ \ \ Л \ \ \ . \ \ V..N \ \ А Л 15 20 25 Longitude, deg Fig. 1 The distributions of horizontal component of the air velocity (m/s) at the altitude of 600 m, assigned at the initial moment (top panel), computed 20 hours after the beginning of calculations (middle panel), and computed 40 hours after the beginning o f calculations (bottom panel). The degree of shadowing of the figures indicates the module of the velocity in m/s. 190