与副热带锋区上急流相关的平流非线性作用在水热收支与涡度平衡中占优势。
Nonline advection which is connected with jet of subtropical frontal zone occupies a main place in heat and moisture budgets and vorticity balance.
结果表明： 热带气旋中心附近存在非热成风涡度负值中心，有利于近海热带气旋突然增强；
Results show that the existing of a negative non-thermal wind vorticity center near the TC center is favorable to its offshore rapid intensification.
结果表明： 热带气旋中心附近存在非热成风涡度负值中心，有利于近海热带气旋突然增强；
Results show that the existing of a negative non-thermal wind vorticity center near the TC center is favorable to its offshore rapid intensification.
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