First observation of mesospheric and thermospheric winds by a Fabry-Perot interferometer in China  

作　　者：YUAN Wei XU JiYao MA RuiPing WU Qian JIANG GuoYing GAO Hong LIU Xiao CHEN SunZheng 

机构地区：[1]State Key Laboratory of Space Weather, Center for Space Science andApplied Research, Chinese Academy of Sciences, Beijing 100190, China [2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China [3]High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO 80307, USA

出　　处：《Chinese Science Bulletin》2010年第35期4046-4051,共6页

基　　金：supported by the National Natural Science Foundation of China (40890165,40921063 and 40911120063);the National Large-Scale Scientific Project "Meridian Project";the Specialized Research Fund for State Key Laboratories

摘　　要：A Fabry-Perot interferometer,funded by the Meridian Project in China,was deployed at the Xinglong station(40.2°N,117.4°E) of the National Astronomical Observatories in Hebei Province,China.The instrument has been operating since April 2010,measuring mesospheric and thermospheric winds.The first observational data of winds at three heights in the mesosphere and thermosphere were analyzed,demonstrating the capacity of this instrument to aid basic scientific research.The wavelengths of three airglow emissions were OH892.0,OI 557.7,and OI 630.0 nm,which corresponded to heights of 87,98,and 250 km,respectively.Three 38-day data sets of horizontal winds,from April 5,2010 to May 12,2010,show clear day-to-day variations at the same height.The minimum and maximum meridional winds at heights of 87,98,and 250 km were-16.5 to 8.7 m/s,-24.4 to 15.9 m/s,and-43.6 to 1.5 m/s.Measurements of zonal winds were-5.4 to 7.6 m/s,2.3 to 23.0 m/s,and-22.6 to 49.3 m/s.The average data from the observations was consistent with the data from HWM93.The wind data at heights of 87 and 98 km suggest a semi-diurnal oscillation,clearly consistent with HWM93 results.Conversely there was a clear discrepancy between the observations and the model at 250 km.In general,this Fabry-Perot interferometer is a useful ground-based instrument for measuring mesospheric and thermospheric winds at middle latitudes.A Fabry-Perot interferometer, funded by the Meridian Project in China, was deployed at the Xinglong station （40.2°N,117.4°E） of the National Astronomical Observatories in Hebei Province, China. The instrument has been operating since April 2010, measur- ing mesospheric and thermospheric winds. The first observational data of winds at three heights in the mesosphere and thermo- sphere were analyzed, demonstrating the capacity of this instrument to aid basic scientific research. The wavelengths of three airglow emissions were OH892.0, OI 557.7, and OI 630.0 nm, which corresponded to heights of 87, 98, and 250 km, respectively. Three 38-day data sets of horizontal winds, from April 5, 2010 to May 12, 2010, show clear day-to-day variations at the same height. The minimum and maximum meridional winds at heights of 87, 98, and 250 km were -16.5 to 8.7 m/s, -24.4 to 15.9 m/s, and -43.6 to 1.5 rn/s. Measurements of zonal winds were -5.4 to 7.6 m/s, 2.3 to 23.0 m/s, and -22.6 to 49.3 m/s. The average data from the observations was consistent with the data from HWM93. The wind data at heights of 87 and 98 km suggest a semi-diurnal oscillation, clearly consistent with HWM93 results. Conversely there was a clear discrepancy between the observa- tions and the model at 250 km. In general, this Fabry-Perot interferometer is a useful ground-based instrument for measuring mesospheric and thermospheric winds at middle latitudes.

关 键 词：热层风 干涉仪 中国 气层 观测数据 国家天文台 中纬度地区 项目资助 

分 类 号：P352[天文地球—空间物理学] TH744.3[天文地球—地球物理学]