初夏我国华北地面感热输送及其对梅雨结构的影响  

THE TRANSFER OF SURFACE SENSIBLE HEAT DURING EARLY SUMMER IN NORTH CHINA AND ITS IMPACT ON THE MEI—YU STRUCTURE

作　　者：张立[1] 乔全明[1] 易兵[1] 徐忠 彭瑞崇 

机构地区：[1]空军气象学院

出　　处：《气象科学研究院院刊》1989年第2期141-149,共9页

摘　　要：本文用拟合方法研究了1979—1983年我国东部三个地区初夏感热输送的旬平均变化,发现从华北到华中地区存在较大的感热通量梯度,它破坏了由北方南下冷锋的低层锋区结构。也是使梅雨系统具有半温带半热带混合性质的根本原因。Using fitting method,the variations of sensible heat transfer for ten—day average duringearly summer of 1979—1983 in China have been analysed.It is found that there are three re-gions from north China to central China where the horizontal gradient of sensible heat flux isgreater than normal.This transfer of sensible heat may destroy normal structure of lower levelfrontal area which usually moves southward from northwest China.It may be main reason thatMei—yu system has a mixing feature of semi—temperate and semi—tropical synoptic systems.

关 键 词：梅雨锋 感热 拟合方法 暖平流 暖脊 锋消 梅雨期 华南区 干绝热递减率 温度平流 

分 类 号：P4[天文地球—大气科学及气象学]