EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Case study of a mesospheric inversion over Maïdo observatory through a multi-instrumental observation.

Alain Hauchecorne1, Christophe Bellisario2, Fabrice Chane-Ming3, Philippe Keckhut1, Pierre Simoneau2, Samuel Trémoulou3, Constantino Litowski4, Gwenaël Berthet5, Fabrice Jégou5, and Sergey Khaykin1
Alain Hauchecorne et al.
  • 1LATMOS-IPSL, CNRS/INSU, UMR 8190, Univ. Versailles St-Quentin, 78280 Guyancourt, France (
  • 2ONERA/DOTA, Chemin de la Hunière, 91123 Palaiseau, France
  • 3LACy, UMR 8105, CNRS, Université de la Réunion, Météo-France), 97744 Saint-Denis de La Réunion, France
  • 4CEA/DAM Ile-de-France – Bruyères-le-Châtel, 91297 Arpajon, France
  • 5LPC2E, Université d'Orléans, CNRS, 3 Av. de la Recherche Scientifique, 45071 Orléans, France

Mesospheric temperature inversions are subject to investigations due to the links with multiscale dynamics such as planetary wave and gravity waves. Knowing the impact on climatological inversions also requires understanding the phenomena occurring before, through, and after a mesospheric inversion. We use data obtained during a measurement campaign over Maïdo observatory in La Réunion Island and focus on a specific event occurring in the night between the 9th and the 10th of October 2017. Among the several observations available, LIDAR measurements provided vertical profiles of temperature and gravity waves potential energy completed by high vertical resolution radiosoundings. The airglow layer observed by an InGaAs camera shows the evolution of gravity wave structures at about 87 km between 0.9 and 1.7 µm. Gravity wave parameters such as horizontal wavelengths or intensity emission variations are extracted, along with potential energy compared with LIDAR data. We use atmospheric models (ERA5, WACCM, WRF) and specific tools (NEMO, GROGRAT) to add supplementary information about the night selected. We present here the first results related to the gravity waves and energy exchanges in the frame of the temperature inversion.

How to cite: Hauchecorne, A., Bellisario, C., Chane-Ming, F., Keckhut, P., Simoneau, P., Trémoulou, S., Litowski, C., Berthet, G., Jégou, F., and Khaykin, S.: Case study of a mesospheric inversion over Maïdo observatory through a multi-instrumental observation., EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-5593,, 2022.