Abstract. According to Modern-Era Retrospective Research Analysis for and Applications (MERRA-2) temperature wind datasets in 2019, this study presents the global variations eastward-propagating wavenumber 1 (E1), 2 (E2), 3 (E3) 4 (E4) planetary waves (PWs) their diagnostic results polar middle atmosphere. We clearly demonstrate eastward wave modes exist during winter periods with westward back...