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

• 作者: Igor V. Mingalev Konstantin G. Orlov Natalia M. Astafieva Oleg V. Mingalev Valery M. Chechetkin Victor S. Mingalev
• 来源期刊: 大气和气候科学(英文)
• 学科: 地球科学
• 关键词: NUMERICAL Simulation Air Flow Lower ATMOSPHERE TROPICAL CYCLONES
• 年，卷（期）: dqhqhkxyw_2014,（5）
• 页码范围: 899-906
• 页数: 8页
• 分类号: P4

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.