矢量散度、旋度特征和锋生锋消现象的联系，并和与此台风前期路径及强度相似、但进入西风带后很快消失了的8406号台风的诊断结果进行了对比。

The result was compared with another typhoon (8406) whose early path and intensity were similar to 8509 but not developed when it entered the westerly belt.

youdao

矢量散度、旋度特征和锋生锋消现象的联系，并和与此台风前期路径及强度相似、但进入西风带后很快消失了的8406号台风的诊断结果进行了对比。

The result was compared with another typhoon (8406) whose early path and intensity were similar to 8509 but not developed when it entered the westerly belt.

youdao