The correlation between the ventilation flow vector calculated applying the improved method and the motion vector of tropical cyclone is very close.

应用改进的方法计算的通风气流矢量与热带气旋移动矢量相关密切。

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After the tuning of background error variance and de-correlation length, results from the NMC-method are closer to those of the innovation vector method, and the analysis results are improved.

通过对背景误差方差、特征长度的调整，显著改善了背景误差功率谱的分布特点，使得NMC方法结果与更新矢量方法结果更为吻合。

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