spiral cloud

The spiral cloud and rain band of typhoon, whose origination and maintain can be explained with the vortex Rossby-wave theory and can produce "local vortex Rossby-wave" through changing gradient distribution pattern of local relative vorticity along outward direction of typhoon.

台风螺旋云雨带的形成与维持，可以用涡旋Rossby波理论来解释：可以通过改变局地相对涡度径向梯度分布，从而沿台风径向激发出局地涡旋Rossby波。

Typhoon spiral cloud bands and shear lines

台风螺旋云（雨）带与切变线

The Study on Automatic Tracking Method of Typhoon Spiral Cloud Bands

台风螺旋云带骨架跟踪方法的研究

Analysis on fine structures of typhoon spiral cloud bands on the satellite images

卫星图像上台风螺旋云带精细结构分析

The variation of spiral cloud band is often a strong signal to the variation of typhoon's intensity and motion.

螺旋云带的变化通常是台风未来移动及其强度变化的强信号。

The convection developed on an instable tongue with higher temperature and higher humidity that joint with the end of an exterior spiral cloud band of Typhoon Rananim.

台风外围的稳定度具有明显的波动性，强对流在台风外围螺旋云带末端的高温、不稳定和相对高湿舌发生；

The heavy rain occurring in a costal typhoon is often located at the spiral cloud band in the east part of the typhoon and is closely associated with the mesoscale pressure waves with the periods 6-10 h and 2? in the lower atmosphere.

近海台风中大暴雨常常产生于台风东侧的螺旋云带区，大暴雨是与低层周期为6&10小时以及2-3小时的中尺度气压波动相联系。

The linear theory of spiral cloud bands of Typhoon

台风中螺旋云带的线性理论