Multi-year observations of horizontal wind frequency spectra in the mesosphere and lower thermosphere by multistatic specular meteor radars

Harikrishnan charuvil Asokan1, Jorge Luis Chau1, Juha Vierinen2, Facundo Poblet1 and Juan Federico Conte1, (1)Leibniz Institute of Atmospheric Physics, Radar Remote Sensing, Kühlungsborn, Germany, (2)The Arctic University of Norway, Department of Physics and Technology, Tromsø, Norway