登陆我国的西北太平洋热带气旋消退时间的变化特征

The subside duration variation characteristics of the northwest Pacific tropical cyclone landed in China

利用中国气象局热带气旋资料中心提供的西北太平洋热带气旋观测资料,对2003—2013年登陆我国的热带气旋从登陆到消退持续时间(简称为持续时间)的年际变化及季节变化特征进行分析,并分类讨论了1次、2次以及3次登陆类型气旋的消退速度的年际、季节变化特征。结果表明:在年际变化中,总趋势为气旋的持续时间呈增加趋势,消退速度呈减慢趋势。在季节分布中,总趋势为夏季持续时间呈略减少的趋势,消退速度呈略增快的趋势,秋季气旋的持续时间略微增加的趋势,消退速度相应的略减慢,春季变化趋势基本不变,冬季没有气旋登陆我国。

Based on the tropical cyclone observation data provided by the Tropical Cyclone Information Center of China Meteorological Bureau, the interannual and seasonal variation characteristics of tropical cyclones from landing to subsiding （i. e. , duration） from 2003 to 2013 were analyzed. And the interannual and seasonal varia- tion characteristics of the decay rate of cyclone in one, two and three landing types were discussed. The results show that the general trend is the trend of cyclone anti the decay rate is decreasing in the interannual variation, In the seasonal distribution, the general trend tends to decrease slightly in the summer duration, anti the rate of re- gression is slightly increasing. The trend of the cyclone in the autunm is slightly increased, and the decay rate is slightly slowed down, and the trend of spring change is basically the same. There is no cyclone landing in China in winter.