华北夏季降雨与热带对流活动的关系  

RELATIONSHIPS BETWEEN SUMMER RAIN ANOMALY OF NORTH CHINA AND TROPICAL CONVECTION

作　　者：张苏平[1] 朱平盛[1] 蒋尚城[2] 

机构地区：[1]山东省气象科学研究所,济南250031 [2]北京大学物理学院大气科学系,北京100871

出　　处：《气象学报》2001年第4期502-508,共7页Acta Meteorologica Sinica

基　　金：国家科技攻关项目"我国短期预测系统的研究"子专题 96-90 8-0 5 -0 6-1 0;山东省科委项目"山东灾害性短期旱涝气候计算机预测系统"

摘　　要：文中设计了热带辐合带综合指数 ,较客观地反映了亚洲季风区深对流活动的气候变化特征。用热带辐合带综合指数分析华北旱涝年季风区对流活动特征 ,结果表明旱涝年对流活动有明显的差异 ,尤其春季东亚和印度季风区的热带辐合带综合指数差异非常显著 ,为华北夏季旱涝预测提供了新的参考依据。An intertropical convergence zone(ITCZ) synthesis index is designed, which can demonstrate quite clearly and objectively the seasonal features of deep convection in ITCZ regions. ITCZ activities are analyzed by means of the index for both wet and dry summers of North China. The results show that the differences between wet and dry summers are more remarkable in winter-spring period, especially in Indian and East Asian monsoon regions, which could be able to provide a new method to the prediction of summer rain in North China .

关 键 词：华北 夏季 旱涝灾害 季风气候 降雨 热带对流活动 射出长波辐射 热带辐合带 

分 类 号：P426.6[天文地球—大气科学及气象学]