EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Wind estimates in the mesosphere - lower thermosphere retrieved from infrasound data

Ekaterina Vorobeva1, Sven Peter Näsholm2, Patrick Espy1, Yvan Orsolini3, and Robert Hibbins1
Ekaterina Vorobeva et al.
  • 1Norwegian University of Science and Technology, Department of Physics, Trondheim, Norway (
  • 2NORSAR, Kjeller, Norway
  • 3NILU–Norwegian Institute for Air Research, Kjeller, Norway

We analyze dataset of infrasound observations from surface military explosions in northern Finland which occur yearly in August and September since 1988. The transient nature of these events allows for identification of returns reflected (or scattered) both from stratospheric and from mesospheric - lower thermospheric (MLT) altitudes. The  infrasound data were recorded at Norwegian infrasound-array station around 200 km north of the explosion site. In this study, we use the measured travel-time and backazimuth deviation of the arriving infrasound wavefronts to estimate snapshots of the MLT cross-wind averaged along the propagation path. The spatial extent of that averaging process is explored, and the MLT wind estimates retrieved from infrasound data are presented and compared against high-top atmospheric model winds.

How to cite: Vorobeva, E., Näsholm, S. P., Espy, P., Orsolini, Y., and Hibbins, R.: Wind estimates in the mesosphere - lower thermosphere retrieved from infrasound data, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-10128,, 2020


Display file

Comments on the display

AC: Author Comment | CC: Community Comment | Report abuse

displays version 1 – uploaded on 05 May 2020, no comments