2004-2007年兰州中川机场低空风切变分析  

Analysis of low-altitude wind shear cases at Lanzhou Zhongchuan Airport during 2004-2007

作　　者：党冰[1] 孙伟中 王嘉媛[1] 魏林波[1] 尚可政[1] 李景鑫[1] 王式功[1] 

机构地区：[1]兰州大学,大气科学学院,甘肃省干旱气候变化与减灾重点实验室,兰州730000 [2]中国民航甘肃空管分局,兰州中川机场气象台

出　　处：《兰州大学学报（自然科学版）》2013年第1期63-69,共7页Journal of Lanzhou University(Natural Sciences)

基　　金：国家公益性行业(气象)科研专项(GYHY201206004);中国气象局天气预报技术开发项目(2011620111000084);中央高校基本科研业务费专项资金项目(LZUJBKY-2012-123)

摘　　要：选取2004-2007年西北地区兰州中川机场的12起低空风切变个例,分析了中川机场低空风切变发生的时间分布特征,并利用常规天气图、数值预报产品,对造成低空风切变的高低空环流特征进行分析.结果表明:兰州中川机场的低空风切变主要出现在每年的春末夏初,大多发生在午后和傍晚;有利于低空风切变发生的天气形势可归纳为3类:西北气流型、横槽型、西风槽型.研究结果有助于低空风切变的预报,可为今后航空气象保障工作提供参考.Based on the data about low-level wind shear cases at Lanzhou Zhongchuan Airport from 2004 to 2007, the temporal distribution characteristics of low-level wind shear at Zhongchuan Airport were summarized and the circulation situations causing the low-level wind shear in high and low altitudes were analyzed by using conventional weather maps and numerical prediction products. The results showed that low-level wind shear usually appeared from late spring to early summer, especially in the afternoon and nightfall of a day at Lanzhou Zhongchuan Airport. Furthermore, the weather situations which were conducive to creating low-level wind shears can be classified into three types. They are northwest airflow type, horizontal trough type and west wind trough type. In addition, the results can help predict the low-level wind shears and provide reference for aviation meteorological work.

关 键 词：环流类型 低空风切变 时间分布 中川机场 

分 类 号：P425[天文地球—大气科学及气象学]