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

doi:10.1088/1674-1056/20/4/049201

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.

Keywords: meso-scale vortex tropical cyclone statistical characteristics

Received: 20 June 2010
Revised: 19 October 2010
Accepted manuscript online:

PACS:	92.60.Wc	(Weather analysis and prediction)
	91.25.G-	(Spatial variations in geomagnetism)

Fund: 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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Luo Zhe-Xian(罗哲贤), Sun Zhi-An(孙治安), and Ping Fan(平凡) Statistical characteristics of meso-scale vortex effects on the track of a tropical cyclone 2011 Chin. Phys. B 20 049201

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

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