EGU23-7121, updated on 25 Feb 2023
EGU General Assembly 2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Summarizing the research of the MADEIRA project - Middle atmosphere dynamics: exploiting infrasound using a multidisciplinary approach at high latitudes

Sven Peter Näsholm1,2, Javier Amezcua3,4, Jelle D. Assink5, Evgenia Belova6, Erik Mårten Blixt1,7, Quentin Brissaud1, Mari Dahl Eggen8, Patrick J. Espy9, Robert Hibbins9, Johan Kero6, Tormod Kvaerna1, Alexis Le Pichon10, Yvan J. Orsolini11, Ismael Vera Rodriguez1,12, Antoine Turquet1, and Ekaterina Vorobeva1,9
Sven Peter Näsholm et al.
  • 1NORSAR, Solutions, Kjeller, Norway (
  • 2Department of Informatics, University of Oslo, Oslo, Norway
  • 3Department of Science and Engineering, Tecnologico de Monterrey Campus Ciudad de México, México
  • 4Department of Meteorology, University of Reading, UK
  • 5KNMI, R&D Seismology & Acoustics, De Bilt, Netherlands
  • 6Swedish Institute of Space Physics, Kiruna, Sweden
  • 7Blixt Geo AS, Oslo, Norway
  • 8Department of Mathematics, University of Oslo, Oslo, Norway
  • 9Department of Physics, Norwegian University of Science and Technology, Trondheim, Norway
  • 10CEA/DAM/DIF, Arpajon, France
  • 11Norwegian Institute for Air Research, Kjeller, Norway
  • 12Silixa, Missoula, Montana, United States

The MADEIRA project (Middle Atmosphere Dynamics: Exploiting Infrasound Using a Multidisciplinary Approach at High Latitudes) is a four-year basic research project finishing in the spring 2023, funded by the Research Council of Norway. 

Its primary objective has been in elucidating the 30-60 km altitude range over large spatial scales using wind and temperature constraints from infrasound data collected at Arctic stations. Wave propagation modelling and infrasound interpretation from well-characterized sources provide remote atmospheric sensing. These data are more continuous in space and time than from many other direct measurement techniques. An aim has been to constrain high-top atmospheric models and explore stratosphere-mesosphere coupling with meteor radar wind measurements sampling the 70-100 km altitude range in combination with the infrasonic data. Another ambition has been to develop real-time diagnostic tools for the stratospheric polar vortex circulation and extreme events like Sudden Stratospheric Warmings. 

Thanks to this project, the research teams have got the opportunity to explore several aspects and building blocks related to infrasound-based middle atmospheric probing and to work towards an assimilation of such datasets into atmospheric models. This paper reviews key research output from the project and highlights accomplishments in the domains of, e.g.: Tropospheric and stratospheric cross-wind estimation using infrasound from explosions; Assimilation of atmospheric infrasound data to constrain tropospheric and stratospheric winds; Atmospheric wind and temperature profile inversion in an ensemble model context; Microbarom radiation and propagation model benchmarking; Speeding up infrasound transmission loss estimation using deep learning; Probing internal middle atmospheric gravity waves; Using a machine learning and stochastics-founded model to provide near real-time stratospheric polar vortex diagnostics.

This project has included several high risk / high gain components and we highlight results that maybe could be labelled as unexpected successes, but we also discuss challenging research obstacles that occurred in our journey.

How to cite: Näsholm, S. P., Amezcua, J., Assink, J. D., Belova, E., Blixt, E. M., Brissaud, Q., Eggen, M. D., Espy, P. J., Hibbins, R., Kero, J., Kvaerna, T., Le Pichon, A., Orsolini, Y. J., Vera Rodriguez, I., Turquet, A., and Vorobeva, E.: Summarizing the research of the MADEIRA project - Middle atmosphere dynamics: exploiting infrasound using a multidisciplinary approach at high latitudes, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-7121,, 2023.

Supplementary materials

Supplementary material file