2009年6月下旬华北持续高温天气诊断分析  

Diagnostic Analysis of Sustained Megatemperature in North China in Late June 2009

作　　者：王金兰 张金平 孟祥翼 田春娜 

机构地区：[1]新乡市气象局,河南新乡453003

出　　处：《气象与环境科学》2010年第4期38-42,共5页Meteorological and Environmental Sciences

摘　　要：利用NCEP资料对2009年6月下旬华北地区的持续性高温天气进行诊断分析,结果发现:这次华北地区持续的高温天气是在稳定的大气层结下,高空受强西北气流控制,低空有强而持久的暖中心配合,且在地面为南风的情况下产生的;700hPa的暖平流对高温天气的形成贡献更大;高空强烈的下沉运动是形成高温天气的重要因素;干燥的大气也是导致高温的有利条件。Based on the NCEP data this paper analyzed the sustained megatemperature in North China in late June 2009.The result showed that the sustained megatemperature in North China was formed in stable atmospheric stratification,strong northwest flow control in high altitude,strong with long-lasting warm center in low altitude,and southern wind on surface;the warm air advection of 700 hPa on the formation of the high temperatures contributed more;strong sinking motion in high-altitude played an important factor;dry air also contributed to the favorable conditions for high temperature.

关 键 词：异常高温 温度平流 下沉运动 相对湿度 

分 类 号：P457.3[天文地球—大气科学及气象学]