Hawaii地区钠激光雷达与流星雷达和中频雷达同时观测水平风场的对比分析  

Comparison of the simultaneous horizontal wind observations by Na lidar,meteor radar and medium frequency radar

作　　者：谷升阳[1] 李陶[1] Alan Liu Gary Swenson Chester Gardner Dennis Riggin David Fritts 

机构地区：[1]中国科学技术大学地球物理与行星科学系,安徽合肥230026 [2]Department of Physical Sciences,Embry-Riddle Aeronautical University,Daytona Beach,Florida USA [3]Department of Electrical and Computer Engineering,University of Illinois at Urbana-Champaign,Urbana Illinois USA [4]Northwest Research Associates,Colorado Research Associates Division,Boulder Colorado USA

出　　处：《量子电子学报》2013年第1期7-11,共5页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(41074108;40974084)

摘　　要：钠激光雷达、流星雷达和中频雷达是测量中间层顶水平风场的三个重要手段。Hawaii地区在2002～2005年间同时存在这三种仪器,多次进行了对中间层大气水平风场的同时观测。通过对2002年7月9日晚和2003年10月23日晚这三种设备连续8 h同时探测的风场数据进行对比分析,发现钠激光雷达与流星雷达观测的径向风和纬向风结果比较吻合,并且都远大于(约两倍)中频雷达观测的结果。风场的夜平均垂直廓线表明,在速度较小并且风速变化比较平稳时,中频雷达能够表现出与钠激光雷达和流星雷达相对较好的一致性;反之,差异较大。Na lidar, meteor radar and medium frequency （MF） radar are three significant techniques in mea- suring mesospheric horizontal wind fields and were extensively used nowadays. With the three instruments, simultaneous observations were operated for many nights in Hawaii from 2002 to 2005. The horizontal winds observations as long as 8 hours at two nights of July 9, 2002 and October 23, 2003 were chosen and analyzed to study the differences of the three techniques. It is found that the wind amplitudes observed by Na lidar and meteor radar axe agreeable with each other normally, but both much larger than MF radar observations.The vertical variations of the nightly mean wind observations show that the three instruments could obtain consistent （evidently discrepant） wind observations when the wind amplitudes and the corresponding shear are weak （strong）.

关 键 词：大气光学 中间层顶水平风场 钠激光雷达 流星雷达 中频雷达 

分 类 号：TN958.98[电子电信—信号与信息处理]