摘要
以2005—2008年发生在北京飞行管制区范围内的18例晴空颠簸为样本,在普查颠簸发生时天气形势的基础上,对造成华北地区晴空颠簸的天气形势进行分类,分为高空急流型、高空槽线型、切变线型和高空脊型。并结合卫星云图,归纳总结了每类晴空颠簸的特点和预报着眼点。通过对2006年1月2日发生在华北地区的一次飞机颠簸过程进行诊断分析,结果表明:在高空急流区边缘风切变较大及与高空急流相联系的等温线密集区边缘温度梯度较大的区域易产生颠簸。飞机颠簸的发生,是温度平流通过在高空急流附近的等温线密集区边缘所激发出的垂直运动引起。
Based on the investigation of 18 Clear in the area of Beijing Air Traffic Control Center Air Turbulences （CNF） reported by the aircrafts during 2005 to 2008,4 sorts of CAT were classifled according the atmosphere circulation. They were JET, trough, ridge and shear line. Combining the satellite images analysis, the features of each sort of CAT and the method of CAT forecast were concluded. At last, a case of CAT was studied and the results showed that the edge of the upper jet stream, the wind shear and large temperature gradient were easier to produce CAT.
出处
《气象》
CSCD
北大核心
2008年第8期15-21,共7页
Meteorological Monthly
关键词
晴空颠簸
大气环流
分类
clear air turbulence atmosphere circulation classification
