【摘要】 分析了1951~2007年影响广西的热带气旋频数、强度以及初旋、终旋影响日期的变化,结果表明:影响广西的热带气旋年频数、最大强度、强度超过32.7m.-s 1的热带气旋频数均呈减少(减弱)趋势,且年际、年代际变化明显,20世纪50年代至70年代为热带气旋影响偏多、偏强期,80年代以后为偏少、偏弱期。初旋影响日期呈偏晚趋势,终旋影响日期变化趋势不显著。更多还原

【Abstract】 According to the data of tropical cyclone(TC) impacting Guangxi for 1951-2007,climatologically statistical parameters of TC including frequency,intensity,the variation of the first-impact date(FID) and the last-impact date(LID) were analyzed.The results show that: the annual frequency、the greatest strength of TC and the TC with the strength more than 32.7 m·s-1 are reduced trend.There are obvious inter-annual and decadal variations in 20th century that more and strong(less and weak) TC during the 50’s to 70’s(since the 80’s).FID is late trends while LID doesn’t change significantly.更多还原