中国物理B ›› 2011, Vol. 20 ›› Issue (4): 49201-049201.doi: 10.1088/1674-1056/20/4/049201

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Statistical characteristics of meso-scale vortex effects on the track of a tropical cyclone

孙治安1, 平凡2, 罗哲贤3   

  1. (1)Center for Australian Weather and Climate Research, GPO Box 1289K, Melbourne, Australia; (2)Lab of Cloud-Precipitation Physics and Severe Storms (LACS), Institute of Atmospheric Physics, Chinese Academy of Science, Beijing 100029, China;Wuxi Research Center for Environment Science and Technology, Wuxi 214031, China; (3)Remote Sensing College, Nanjing University of Information Science and Technology, Nanjing 210044, China;Wuxi Research Center for Environment Science and Technology, Wuxi 214031, China
  • 收稿日期:2010-06-20 修回日期:2010-10-19 出版日期:2011-04-15 发布日期:2011-04-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 40775038, 40875031 and 40975036) and the Science Foundation of Wuxi Environment Science and Technology Research Center.vglue3pt

Statistical characteristics of meso-scale vortex effects on the track of a tropical cyclone

Luo Zhe-Xian(罗哲贤)a)d), Sun Zhi-An(孙治安)b),and Ping Fan(平凡)c)d)†   

  1. a Remote Sensing College, Nanjing University of Information Science and Technology, Nanjing 210044, China; b Center for Australian Weather and Climate Research, GPO Box 1289K, Melbourne, Australia; c Lab of Cloud-Precipitation Physics and Severe Storms (LACS), Institute of Atmospheric Physics, Chinese Academy of Science, Beijing 100029, China; d Wuxi Research Center for Environment Science and Technology, Wuxi 214031, China
  • Received:2010-06-20 Revised:2010-10-19 Online:2011-04-15 Published:2011-04-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 40775038, 40875031 and 40975036) and the Science Foundation of Wuxi Environment Science and Technology Research Center.

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摘要： This paper examines initial meso-scale vortex effects on the motion of a tropical cyclone (TC) in a system where coexisting two components of TC and meso-scale vortices with a barotropic vorticity equation model. The initial meso-scale vortices are generated stochastically by employing Reinaud's method. The 62 simulations are performed and analysed in order to understand the statistical characteristics of the effects. Results show that the deflection of the TC track at t=24 h induced by the initial meso-scale vortices ranges from 2 km to 37 km with the mean value of 13.4 km. A more significant deflection of the TC track can be reduced when several initial meso-scale vortices simultaneously appear in a smaller TC circulation area. It ranges from 22 km to 37 km with the mean value of 28 km, this fact implies that the initial meso-scale vortices-induced deflection may not be neglected sometimes.

关键词: meso-scale vortex, tropical cyclone, statistical characteristics

Abstract: This paper examines initial meso-scale vortex effects on the motion of a tropical cyclone (TC) in a system where coexisting two components of TC and meso-scale vortices with a barotropic vorticity equation model. The initial meso-scale vortices are generated stochastically by employing Reinaud's method. The 62 simulations are performed and analysed in order to understand the statistical characteristics of the effects. Results show that the deflection of the TC track at t=24 h induced by the initial meso-scale vortices ranges from 2 km to 37 km with the mean value of 13.4 km. A more significant deflection of the TC track can be reduced when several initial meso-scale vortices simultaneously appear in a smaller TC circulation area. It ranges from 22 km to 37 km with the mean value of 28 km, this fact implies that the initial meso-scale vortices-induced deflection may not be neglected sometimes.

Key words: meso-scale vortex, tropical cyclone, statistical characteristics

中图分类号:  (Weather analysis and prediction)

  • 92.60.Wc
91.25.G- (Spatial variations in geomagnetism)