Numerical Modeling of the Initial Formation of Cyclonic Vortices at Tropical Latitudes

作     者：Igor V. Mingalev Natalia M. Astafieva Konstantin G. Orlov Victor S. Mingalev Oleg V. Mingalev Valery M. Chechetkin 

作者机构：Polar Geophysical Institute Kola Scientific Center of the Russian Academy of Sciences Apatity Russia Space Research Institute of the Russian Academy of Sciences Moscow Russia Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences Moscow Russia 

出 版 物：《Atmospheric and Climate Sciences》 (大气和气候科学（英文）)

年 卷 期：2014年第4卷第5期

页      面：899-906页

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

主　　题：Numerical Simulation Air Flow Lower Atmosphere Tropical Cyclones 

摘      要：To investigate the initial formation of large-scale vortices at tropical latitudes a regional non-hydrostatic mathematical model of the wind system of the lower atmosphere, developed earlier in the Polar Geophysical Institute, is utilized. Three-dimensional distributions of the atmospheric parameters in the height range from 0 to 15 km over a limited region of the Earth’s surface are produced by the utilized model. Simulations are performed for the case when the limited three-dimensional simulation domain is intersected by an intertropical convergence zone in the west-east direction. Simulation results indicated that the origin of two convexities in the north direction in the configuration of the intertropical convergence zone can lead to the formation of three distinct tropical cyclones during the period of about four days.