The source of tropospheric tides

作     者：Xing Li WeiXing Wan JinBin Cao ZhiPeng Ren Xing Li;WeiXing Wan;JinBin Cao;ZhiPeng Ren

作者机构：Key Laboratory of Earth and Planetary PhysicsInstitute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China School of Space and EnvironmentBeihang UniversityBeijing 100083China Key Laboratory of Space Environment Monitoring and Information ProcessingMinistry of Industry and Information TechnologyBeijing 100083China Beijing National Observatory of Space EnvironmentInstitute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth ScienceChinese Academy of SciencesBeijing 100029China University of the Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Earth and Planetary Physics》 (地球与行星物理（英文版）)

年 卷 期：2020年第4卷第5期

页      面：449-460页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：The present work is supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(grant no.XDA17010201) the National Science Foundation of China(grant nos.41604138,41427901,41621063,41474133,41674158,41874179,and 41322030) 

主　　题：tropospheric tides Hough mode decomposition yearly variations 

摘      要：With the method of Hough mode decomposition(HMD),the tidal sources of the three main tidal components,namely,the migrating components DW1(diurnal westward propagating wavenumber 1)and SW2(semidiurnal westward propagating wavenumber 2)and the non-migrating component DE3(diurnal eastward propagating wavenumber 3),at the tropospheric altitudes(1–12 km)and in the latitude range of±60°,were obtained from National Centers for Environmental Prediction(NCEP)Climate Forecast System Reanalysis(CFSR)data during the interval from 1988 to *** analyzed these sources in detail at 6 km and obtained the main properties of their yearly *** DW1 source was found to present a weak seasonal variation in the lower latitudes(about±10°–15°).That is,the amplitudes of the DW1 sources were larger in the summer months than in the winter months,and DW1 presented semi-annual variation near the equator(±10°)such that the DW1 source was larger at the equinoxes than at the *** addition,the SW2 source was symmetric and was stronger in the southern hemisphere than in the northern *** SW2 source presented remarkable annual and semi-annual variation such that the amplitudes were largest during the March equinox months and larger during the June solstice *** contrast,DE3 appeared mainly around the equatorial latitudes within about±30°.The DE3 source presented remarkable semiannual variation that was larger around the solstices than the equinoxes in the southern hemisphere,and it was opposite in the northern *** HMD,we found that the tropospheric tides were primarily dominated by some leading propagating Hough modes,specifically,the(1,1),(2,3),and(3,3)modes;the influences of the other Hough modes were *** consequences of an El Niño–Southern Oscillation modulation of tidal amplitudes for the energy and momentum budgets of the troposphere may now be expected to attract *** summary,the above yearly variations of the main tidal sources and