大气重力波引起的偶发钠层研究  

Study of sporadic sodium layers guided by gravity waves

作　　者：程永强[1,2] 胡雄[1] 闫召爱[1] 郭商勇[1] 王博[1,2] 

机构地区：[1]中国科学院国家空间科学中心,北京100190 [2]中国科学院大学,北京100049

出　　处：《红外与激光工程》2016年第10期93-98,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(41104100);中国科学院科研装备研制项目(YZ201130)

摘　　要：利用了中国科学院临近空间环境野外综合探测站(廊坊,39°N,116°E)的钠荧光多普勒激光雷达和流星雷达的探测数据对廊坊上空大气重力波引起的偶发钠层(SSL)进行了研究。首先从大气重力波方程出发,计算分析了大气水平风剪切和垂直风场之间的相位关系;其次利用了钠荧光多普勒激光雷达和流星雷达的实测数据对大气重力波引起的偶发钠层进行了分析研究;经研究分析可知,由于大气重力波引起强的水平风切变和垂直风场风向反转的共同作用,其堆积效应使得钠原子密度增强,形成了偶发钠层。The sporadic sodium layers （SSL） caused by atmospheric gravity waves over Langfang （39°N, 116°E） is studied by using the sodium fluorescence Doppler lidar and the meteor radar detection data of the near space environment comprehensive exploration station, Chinese Academy of Sciences. Firstly, the phase relationship between the atmospheric horizontal wind and vertical wind field was calculated and analyzed by the atmospheric gravity wave equation. Secondly, the SSL caused by atmospheric gravity waves was analyzed by the experimental data of the sodium fluorescence lidar and the meteor radar. The results show that the accumulation and joint action of the strong horizontal wind shear and vertical wind field direction caused by the atmospheric gravity wave increases the density of sodium atoms and form the SSL.

关 键 词：钠荧光多普勒激光雷达 流星雷达 大气重力波 偶发钠层 

分 类 号：TN958.98[电子电信—信号与信息处理]