摘要
用EOF对全国 16 0个站夏季降水展开 ,取前 5个特征向量进行分析 ,发现全国主要有 4种雨型分布 ,依次呈“ + - +”、“ + -”、“ - + -”、“ -”型。与黑龙江省降水关系密切的为第 1种 ,即东北区及黄河下游多雨 ,江淮少雨 ,长江中下游流域多雨 ;夏末雨带南退至长江以南 ,华南多雨 ,而中国中部为广大的少雨区。
In this paper,at 160 stations in CHINA EOF by using analysed course of EOF 1～5.The result thow that the was divided four types,The types series “+-+”、“+-”、“-+-”、“-”.Very good relationship precipitation Heilongjiang is the first type.So northeast and lower reachs Yellow River rainfall was above normal,Changjiang Huaihe below normal,The lower and middle reachs rainfall above.In the period late in summer rain-band Changjiang River to south CHINA regin rainfall above normal,But middle region was the below normal.
出处
《黑龙江气象》
2001年第2期32-35,共4页
Heilongjiang Meteorology
基金
黑龙江省科委下达"松花江洪水对经济环境影响评估及预防对策研究"课题 (1999~ 2 0 0 0年攻关项目 )
