摘要
在介绍大气折射和大气波导类型的基础上,分析了3类大气波导形成的气象条件。以出现在南京地区的大气波导为例,从探空资料、天气图和NCEP再分析资料出发,对受台风影响的大气波导特征进行了综合分析;对湿度场和散度场分析表明,湿度递减以及辐散下沉运动是大气波导发生的主要原因。
Three types of formation mechanisms of atmospheric duct were analyzed based on the introduction of basic types of atrnospheric refraction and their effects on electromagnetic wave.An atmospheric duct which appeared in Nanjing affected by typhoon was analyzed by using the NCEP data, weather map and the sounding data in this area. The humidity fields and the divergence field changes showed that this atmospheric.ospheric duct was caused by the decrease of the humidity with the height and divergence subsidence.
出处
《安徽农业科学》
CAS
北大核心
2009年第3期1198-1200,共3页
Journal of Anhui Agricultural Sciences
关键词
大气波导
天气系统
台风
气象要素
Atmospheric duct
Weather system
Typhoon
Meteorological element
