钠激光雷达对中间层顶大气温度和风场的探测  

High-Spectra Resolution Sodium Lidar for Mesopause Region Temperature and Wind Measurements

作　　者：李陶[1] 方欣[1] 

机构地区：[1]中国科学技术大学地球和空间科学学院,安徽合肥230052

出　　处：《安徽师范大学学报（自然科学版）》2015年第2期103-109,共7页Journal of Anhui Normal University(Natural Science)

基　　金：国家自然科学基金(41225017)

摘　　要：中高层大气温度和风场是研究中高层大气波动的重要参数.钠高光谱分辨率激光雷达能够对中间层顶(80-105km)大气温度和风场进行高精度观测.2011年中国科学技术大学成功研制了我国首台高光谱分辨率钠测温测风激光雷达系统.文中对该激光雷达系统进行了详细介绍,其中包括探测的基本原理,发射机,接收机和采集控制部分的设计.给出了钠测温测风激光雷达于2011年12月9日晚同时探测的大气温度、纬向风、经向风和钠原子密度的结果.结果发现中间层顶区域大气温度、纬向风、经向风变化范围较大,分别是175K^235K,-70~60m/s,-100~110m/s,有明显的半日或周日潮汐振荡的成分.探测结果表明中国科学技术大学钠测温测风激光雷达可对中间层顶区域温度和大气风场进行高时空分辨率的探测,其探测数据对于研究中高层大气动力学具有重要的意义.Middle and upper atmosphere temperature and wind are important parameters to study atmospheric waves.A high-spectra resolution sodium lidar was developed at the University of Science and Technology of China（USTC）in 2011.It can be used for temperature and wind measurements in mesopause region（80-105km）.First,the lidar system is introduced in details,including principle of measurements,the transmitter,receiver,and acquisition and control subsystems. The results of mesopause region temperature,zonal wind,meridional wind and sodium density,observed simultaneously by this lidar on the night of December 9,2011,are then present.The results show that mesopause temperature,zonal wind,meridional wind vary in significantly with 175-235K,-70m-60m/s and-100-100m/s respectively,likely induced by the solar diurnal and/or semidiurnal tides.These results further indicate that the USTC high-spectra resolution sodium lidar is an effective tool for mesopause region temperature and wind measurements with high temporal and spatial resolutions,and the observational data enable us to study the middle and upper atmosphere dynamics in great high resolutions.

关 键 词：大气温度 纬向风 经向风 中高层大气 

分 类 号：TN249[电子电信—物理电子学]