EGU22-8039
https://doi.org/10.5194/egusphere-egu22-8039
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Multistatic meteor radar observations and tomographic retrievals to assess the spatial and temporal variability of 3D winds on regional scales at the mesosphere and lower thermosphere

Gunter Stober1, Alan Liu3, Alexander Kozlovsky2, Zishun Qiao3, Masaki Tsutsumi4,5, Njål Gulbrandsen6, Satonori Nozawa7, Mark Lester8, Johan Kero9, Evgenia Belova9, and Nicholas Mitchell10,11
Gunter Stober et al.
  • 1University Bern, Institute of Applied Physics, Microwave Physics, Bern, Switzerland (gunter.stober@iap.unibe.ch)
  • 2Sodankylä Geophysical Observatory, University of Oulu, Finland
  • 3Center for Space and Atmospheric Research and Department of Physical Sciences, Embry-Riddle Aeronautical University, Daytona Beach, Florida, USA
  • 4National Institute of Polar Research, Tachikawa, Japan
  • 5The Graduate University for Advanced Studies (SOKENDAI), Tokyo, Japan
  • 6Tromsø Geophysical Observatory UiT - The Arctic University of Norway, Tromsø, Norway
  • 7Institute for Space-Earth Environmental Research, Nagoya university, Japan
  • 8University of Leicester, Leicester, UK
  • 9Swedish Institute of Space Physics (IRF), Kiruna, Sweden
  • 10British Antarctic Survey, UK
  • 11University of Bath, Bath, UK

Multistatic meteor radar observations offer the possibility to investigate the short-term variability at the mesosphere and lower thermosphere on regional scales. Here we present preliminary results of spatially resolved 3D winds and their corresponding horizontal wavelength spectra using the Nordic Meteor Radar Cluster and CONDOR in Chile with a recently developed 3DVAR+div retrieval. The new retrieval provides for the first time a physically consistent solution for the vertical winds that conform the continuity equation. Based on these spectra we can separate the spatial scales that are driven by rotational modes from those dominated by divergent gravity waves. Furthermore, we present the first results of momentum flux spectra derived from these observations on a daily basis.

How to cite: Stober, G., Liu, A., Kozlovsky, A., Qiao, Z., Tsutsumi, M., Gulbrandsen, N., Nozawa, S., Lester, M., Kero, J., Belova, E., and Mitchell, N.: Multistatic meteor radar observations and tomographic retrievals to assess the spatial and temporal variability of 3D winds on regional scales at the mesosphere and lower thermosphere, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-8039, https://doi.org/10.5194/egusphere-egu22-8039, 2022.

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