Preprints
https://doi.org/10.5194/angeo-2024-13
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-2024-13
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
30 Aug 2024
| 30 Aug 2024
Status: this preprint is currently under review for the journal ANGEO.
TIMED Doppler Interferometer Measurements of Neutral Winds at the Mesosphere and Lower Thermosphere and Comparison to Meteor Radar Winds
Abstract. The mesosphere and lower thermosphere (MLT) is a highly variable region that forms the transition region between middle and upper atmosphere. The variability of this region is driven by atmospheric waves transporting energy and momentum from the lower and middle atmosphere to MLT altitudes. The upward propagation of atmospheric gravity waves and tides is one of the key processes at all latitudes that alters the state of the ionosphere-thermosphere system. Their vertical propagation depends on the background mean winds. The TIMED Doppler Interferometer (TIDI) onboard the Thermosphere-Ionosphere-Mesosphere-Energetics and Dynamics (TIMED) satellite observes neutral winds at the MLT using airglow emissions. We establish a TIDI mean wind climatology, compare our results with existing climatologies derived from local meteor radar observations, and discuss similarities and differences depending on local time and geographical latitude.
How to cite. Gauthier, A., Borries, C., Kozlovsky, A., Janches, D., Brown, P., Vida, D., Jacobi, C., Murphy, D., Tsutsumi, M., Gulbrandsen, N., Nozawa, S., Lester, M., Kero, J., Mitchell, N., Moffat-Griffin, T., and Stober, G.: TIMED Doppler Interferometer Measurements of Neutral Winds at the Mesosphere and Lower Thermosphere and Comparison to Meteor Radar Winds, Ann. Geophys. Discuss. [preprint], https://doi.org/10.5194/angeo-2024-13, in review, 2024.
Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
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Arthur Gauthier
CORRESPONDING AUTHOR
Institue of Applied Physics, University of Bern, Bern, Switzerland
Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland
Institute for Solar-Terrestrial Physics, German Aerospace Center (DLR), Neustrelitz, Germany
Claudia Borries
Institute for Solar-Terrestrial Physics, German Aerospace Center (DLR), Neustrelitz, Germany
Alexander Kozlovsky
Sodankylä Geophysical Observatory, University of Oulu, Finland
Diego Janches
ITM Physics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
Peter Brown
Dept. of Physics and Astronomy, University of Western Ontario, London, Ontario, Canada
Western Institute for Earth and Space Exploration, University of Western Ontario, London, Ontario, Canada
Denis Vida
Dept. of Physics and Astronomy, University of Western Ontario, London, Ontario, Canada
Christoph Jacobi
Institute for Meteorology, Leipzig University, Leipzig, Germany
Damian Murphy
Australian Antarctic Division, Kingston, Tasmania, Australia
Masaki Tsutsumi
National Institute of Polar Research, Tachikawa, Japan
The Graduate University for Advanced Studies (SOKENDAI), Tokyo, Japan
Njål Gulbrandsen
Tromsø Geophysical Observatory, UiT – The Arctic University of Norway, Tromsø, Norway
Satonori Nozawa
Institute for Space-Earth Environmental Research, Nagoya University, Japan
Mark Lester
University of Leicester, Leicester, UK
Johan Kero
Swedish Institute of Space Physics (IRF), Kiruna, Sweden
Nicholas Mitchell
British Antarctic Survey, Cambridge, CB3 0ET, UK
Department of Electronic and Electrical Engineering, University of Bath, Bath, UK
Tracy Moffat-Griffin
British Antarctic Survey, Cambridge, CB3 0ET, UK
Institue of Applied Physics, University of Bern, Bern, Switzerland
Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland
Short summary
This study focuses on the TIMED Doppler Interferometer (TIDI)-Meteor Radar(MR) comparison of zonal and meridional winds and their dependence on local time and latitude. The correlation calculation between TIDI winds measurements and MR winds shows good agreement. A TIDI-MR seasonal comparison and the altitude-latitude dependence for winds is performed. TIDI reproduce the mean circulation well when compared with the MRs and might be useful as a lower boundary for general circulation models.
This study focuses on the TIMED Doppler Interferometer (TIDI)-Meteor Radar(MR) comparison of...