厄尔尼诺事件的强度与登陆广东热带气旋数量的关系初探  

Relations Between Strength of El Nino Phenomenon and Amount of Tropical Cyclones Landing Guangdong

作　　者：唐晓春[1] 彭鹏[2] 

机构地区：[1]广东商学院城市与环境学系,广东广州510320 [2]华南师范大学地理系,广东广州510631

出　　处：《地理科学》2005年第6期690-696,共7页Scientia Geographica Sinica

基　　金：广东省教育厅"千百十工程"优秀人才培养基金项目<厄尔尼诺年广东省自然灾害的特征及对策研究>;国家自然科学基金项目(批准号:49971010)资助

摘　　要：文章对厄尔尼诺事件的强度与登陆广东的热带气旋数量之间的关系进行初步的了统计分析。结果表明:就总的厄尔尼诺年份来看,厄尔尼诺事件对登陆广东的热带气旋总数量没有显著的影响;但就具体的厄尔尼诺事件的强度来看,强、中和弱的厄尔尼诺事件都对登陆广东的热带气旋有明显的影响,只是强和弱的厄尔尼诺事件使登陆广东的热带气旋数量比非厄尔尼诺年份明显偏少;而中等厄尔尼诺事件却使登陆广东的热带气旋数量比非厄尔尼诺年份偏多。厄尔尼诺通过影响沃克环流,使沃克环流随着厄尔尼诺强度的不同而产生不同幅度的东移,进而使登陆广东的热带气旋源地的气流出现不同情况,最后影响登陆广东的热带气旋的数量。The relations between the strength of the El Nino phenomenon and the amount of the tropical cyclones landing Guangdong axe calculated and analyzed. The results express that the El Nino phenomenon does almost not influence the quantity of the tropical cyclones landing Guangdong in the age of the El Nino. But in regard to concrete strength of the El Nino, the strong, the medium and the weak El Nino phenomenon are all to have the obvious influence, just the strong and the weak El Nino phenomenon make the quantity of the tropical cyclones landing Guangdong be less than that in the age that have not the El Nino phenomenon, but the medium El Nino phenomenon make the quantity of the tropical cyclones be more than that in the age that have not the El Nino phenomenon. Along the influence of the Walker circulation, the El Nino make the Walker circulation move east to the different range as the strength of the different El Nino phenomenon. And it make the air circulation in the sources area of tropical cyclones landing Guangdang different, and finally affect the quantity of the tropical cyclones.

关 键 词：厄尔尼诺强度 热带气旋的数量 沃克环流 

分 类 号：P429[天文地球—大气科学及气象学]