TY JOUR TI Wave activity of the mesosphere in the planetary wave range according to OH (3-1) emission observations at Maimaga and Tiksi stations for 2015–2020 KW planetary waves KW mesopause region KW hydroxyl JO Solar-Terrestrial Physics AU Sivtseva, V.I. AU Ammosov, P.P. AU Gavrilieva, G.A. AU Ammosova, A.M. AU Koltovskoi, I.I. PY 2022 IS 8 PB INFRA-M Academic Publishing LLC.