Analysis of Doppler Radar Data Characteristic of Northeast Cold Vortex

Some obvious characters of Doppler radial velocity are found when Doppler radar detected the northeast cold vortex. It is simulated with the Rankine model. The result shows that the numerical model image of the northeast cold vortex is very similar to that of the Doppler radar. It is useful for forecaster that the center of the northeast cold vortex and its moving pathway will be identified according to the Doppler velocity.

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