Extreme concentric gravity waves observed in the mesosphere and thermosphere regions over southern Brazil associated with fast-moving severe thunderstorms. - Li, Qinzeng; Xu, Jiyao; Zhu, Yajun; Wrasse, Cristiano M.; Bageston, José V.; Yuan, Wei; Liu, Xiao; Liu, Weijun; Wen, Ying; Li, Hui; Liu, Zhengkuan (Atmospheric Chemistry & Physics, 2025)