Comprehensive analysis on the characteristics of tornado Vortex (TVS), mesocyclone (m) and radial velocity Pairs are effective ways to identify tornado echoes.

综合分析龙卷涡旋特征(TVS)、中气旋(m)和径向速度场上的速度对是识别龙卷回波的有效方法。

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When tornado emerges, tornado vortex (TVS) and mesocyclone in the supercell storm can be found in the radial velocity chart.

径向速度图上，龙卷出现时超级单体风暴同时具有龙卷涡旋特征(TVS)和中气旋特征。

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It is this updraft spin, or mesocyclone, that creates the tornado.

CNN: The making of a nightmare tornado