基于漠河与武汉站流星雷达的中间层顶大气温度反演  

Atmospheric temperature inversion at mesopause based on meteor radar of Mohe and Wuhan stations

作　　者：陈步鹏 冯健[2] 尹文杰 许娜 魏博琦 宿杰[1] CHEN Bupeng;FENG Jian;YIN Wenjie;XU Na;WEI Boqi;SU Jie(College of Electronics and Information,Qingdao University,Qingdao 266071,China;China Research Institute of Radiowave Propagation,Qingdao 266107,China;Electronic Information School,Wuhan University,Wuhan 430072,China;School of Physics,University of Electronic Science and Technology of China,Chengdu 611731,China)

机构地区：[1]青岛大学电子信息学院,青岛266071 [2]中国电波传播研究所,青岛266107 [3]武汉大学电子信息学院,武汉430072 [4]电子科技大学物理学院,成都611731

出　　处：《电波科学学报》2024年第2期280-286,共7页Chinese Journal of Radio Science

摘　　要：本文利用漠河和武汉站的全天空流星雷达在2012—2022年期间的观测数据,基于流星高度分布的半高宽(full width at half maximum,FWHM)与温度之间的线性关系来反演90 km高度处的大气温度。对每年数据作线性拟合时发现拟合参数几乎不变,因此本文使用过去一段时间总结出的参数来拟合温度,并与传统梯度法对比。结果表明,使用FWHM法测出的温度与Aura卫星的温度更为接近,其中相关系数和平均误差均优于梯度法,并且FWHM法在较高纬度的漠河站的拟合效果好于较低纬度的武汉站。说明在漠河站和武汉站使用FWHM法反演中间层顶大气温度是可行的;同时也证明了纬度会影响FWHM法的误差,在较高纬度使用FWHM法的结果误差更小。This paper uses the data of the all-sky meteor radar in Mohe and Wuhan stations from 2012 to 2022 to estimate the atmospheric temperature at 90 km based on the linear relationship between the full width at half maximum(FWHM)of the meteor height distribution and the temperature.Since the fitting parameters were found to be almost constant when linearly fitting the data from year to year,this paper uses the parameters summarized over time to fit the temperature and compares it with the conventional gradient method.The results show that the temperature measured by the FWHM method is closer to that of the Aura satellite,where the correlation coefficient and the mean error are better than those of the gradient method.Moreover,the FWHM method fits better at the higher latitudes Mohe station than the lower latitudes Wuhan station.All in all,it is feasible to use the FWHM method to estimate the atmospheric temperature at mesopause at Mohe and Wuhan stations.Besides,this paper verifies that latitude can affect the error of the FWHM method,where the error of the FWHM method is smaller at higher latitude.

关 键 词：流星雷达 大气温度 中间层顶 流星峰值高度 半高宽(FWHM) 

分 类 号：P351[天文地球—空间物理学]