Mesospheric tide comparisons at low latitudes observed by two collocated meteor radars  

作　　者：Jian Li Wen Yi XiangHui Xue Jie Zeng HaiLun Ye JianYuan Wang JinSong Chen Na Li TingDi Chen 

机构地区：[1]Chinese Academy of Sciences(CAS)Key Laboratory of Geospace Environment,Department of Geophysics and Planetary Sciences,University of Science and Technology of China,Hefei 230026,China [2]CAS Center for Excellence in Comparative Planetology,Anhui Mengcheng Geophysics National Observation and Research Station,University of Science and Technology of China,Hefei 230026,China [3]Hefei National Laboratory,University of Science and Technology of China,Hefei 230026,China [4]Collaborative Innovation Center of Astronautical Science and Technology,Harbin 150001,China [5]National Key Laboratory of Electromagnetic Environment,China Research Institute of Radiowave Propagation,Qingdao 266107,China [6]Yunnan Kunming Electromagnetic Environment National Observation and Research Station,Qujing Kunming 655000,China

出　　处：《Earth and Planetary Physics》2025年第1期54-68,共15页地球与行星物理（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 42125402 and 42174183);the National Key Technologies R&D Program of China (Grant No.2022YFF0503703);the B-type Strategic Priority Program of the Chinese Academy of Sciences (Grant No. XDB41000000);the foundation of the National Key Laboratory of Electromagnetic Environment and the Fundamental Research Funds for the Central Universities;the Chinese Meridian Project

摘　　要：Accurate knowledge of mesospheric winds and waves is essential for studying the dynamics and climate in the mesosphere and lower thermosphere(MLT)region.In this study,we conduct a comparative analysis of the mesosphere tidal results obtained from two adjacent meteor radars at low latitudes in Kunming,China,from November 2013 to December 2014.These two radars operate at different frequencies of 37.5 MHz and 53.1 MHz,respectively.However,overall good agreement is observed between the two radars in terms of horizontal winds and tide observations.The results show that the dominant tidal waves of the zonal and meridional winds are diurnal and semidiurnal tides.Moreover,we conduct an exhaustive statistical analysis to compare the tidal amplitudes and vertical wavelengths recorded by the dual radar systems,which reveals a high degree of alignment in tidal dynamics.The investigation includes variances and covariances of tidal amplitudes,which demonstrate remarkable consistency across measurements from both radars.This finding highlights clear uniformity in the mesospheric tidal patterns observed at low latitudes by the two neighboring meteor radars.Results of the comparative analysis specifically underscore the significant correlation in vertical wavelength measurements,validating the robustness of radar observations for tidal research.

关 键 词：mesosphere and lower thermosphere region meteor radar mesospheric winds TIDES 

分 类 号：P433[天文地球—大气科学及气象学]