CAJ | 학술논문

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.
선취2004?2007년서북지구란주중천궤장적12기저공풍절변개례,분석료중천궤장저공풍절변발생적시간분포특정,병이용상규천기도、수치예보산품,대조성저공풍절변적고저공배류특정진행분석.결과표명:란주중천궤장적저공풍절변주요출현재매년적춘말하초,대다발생재오후화방만;유리우저공풍절변발생적천기형세가귀납위3류:서북기류형、횡조형、서풍조형.연구결과유조우저공풍절변적예보,가위금후항공기상보장공작제공삼고.
@@@@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.