Extreme concentric gravity waves observed in the mesosphere and thermosphere regions over southern Brazil associated with fast-moving severe thunderstorms
Qinzeng Li,Jiyao Xu,Yajun Zhu,Cristiano M. Wrasse,José V. Bageston,Wei Yuan,Xiao Liu,Weijun Liu,Ying Wen,Hui Li,and Zhengkuan Liu
Qinzeng Li
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
This study explores intense concentric gravity waves (CGWs) based on ground-based and multi-satellite observations over southern Brazil, revealing significant airglow perturbations and strong momentum release. Triggered by deep convection and enabled by weaker wind fields, these CGWs reached the mesopause and thermosphere. Consistent detection via OI and OH airglow emissions confirms their vertical propagation, while asymmetric thermosphere propagation is linked to Doppler-induced wavelength changes.
This study explores intense concentric gravity waves (CGWs) based on ground-based and...