基于北京与武汉MST雷达的中纬度地区中间层风场统计研究  

Statistical study on mesospheric winds in the mid-latitude based on Beijing and Wuhan MST radars

作　　者：林逸鸣 陈罡[1] 周晓明[1] 张绍东[1] 龚晚林 李雅贤[1] 张敏 胡鹏飞 LIN Yiming;CHEN Gang;ZHOU Xiaoming;ZHANG Shaodong;GONG Wanlin;LI Yaxian;ZHANG Min;HU Pengfei(School of Electronic Information,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学电子信息学院,湖北武汉430072

出　　处：《湘潭大学学报(自然科学版)》2025年第2期55-67,共13页Journal of Xiangtan University(Natural Science Edition)

基　　金：国家自然科学基金(42274197);中央高校基本科研业务费专项资金(2042023kf0200)。

摘　　要：中国子午工程一期自主设计并建造了两台对流层-平流层-中间层(MST)雷达,分别位于北京(39.75°N,116.96°E)和武汉(29.51°N,114.13°E).这两台雷达对中纬度和亚热带地区的对流层、平流层及中间层区域开展了连续大气观测,至今已稳定运行13年.本研究基于2012年至2022年间两地MST雷达的观测数据,经过月平均处理,提取了11年间观测到的三维风场的连续变化.结果显示,纬向风在4月至9月以西向风为主,10月至次年3月以东向风为主,呈现季节性变化;经向风在65~72 km高度以南向风为主,73~85 km高度以北向风为主;垂直风场大部分时间表现为向下运动.此外,长期拟合分析表明,北京和武汉的纬向风存在明显的年振荡(AO),但两年振荡(QBO)和半年振荡(SAO)特征并不显著.本次统计研究弥补了中纬度地区中间层风场长期观测研究的空白,为后续研究提供了数据支持.The first phase of the Chinese Meridian Project independently designed and constructed two Mesosphere-Stratosphere-Troposphere(MST)radars,located in Beijing(39.75°N,116.96°E)and Wuhan(29.51°N,114.13°E).These radars have provided continuous observations of the troposphere,stratosphere,and mesosphere in mid-latitude and subtropical regions,operating stably for over 13 years.Utilizing observational data from 2012 to 2022,this study applies monthly averaging to extract 11 years of continuous variations in three-dimensional wind fields.The analysis reveals that the zonal wind predominantly exhibits westward motion from April to September and eastward motion from October to March,demonstrating clear seasonal variations.The meridional wind is primarily southward at altitudes of 65-72 km and northward at altitudes of 73-85 km.The vertical wind field generally shows downward motion throughout the observation period.Additionally,long-term fitting analysis identifies a prominent Annual Oscillation(AO)in the zonal wind at both Beijing and Wuhan,whereas characteristics of the Quasi-Biennial Oscillation(QBO)and Semi-Annual Oscillation(SAO)are not significant.This statistical study fills the gap in long-term observational research on the mesosphere wind field in mid-latitude,providing data support for future research.

关 键 词：MST雷达 中间层风场 季节性变化 周期振荡 

分 类 号：P421.3[天文地球—大气科学及气象学]