EGU22-2763, updated on 27 Mar 2022
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Quasi-2-Day Wave in Low-Latitude Atmospheric Winds as Viewed From the Ground and Space During January–March, 2020

Maosheng He1, Jorge L. Chau1, Jeffrey M. Forbes2, Xiaoli Zhang2, Christoph R. Englert3, Brian J. Harding4, Thomas J. Immel4, Lourivaldo M. Lima5, S. Vijaya Bhaskar Rao6, M. Venkat Ratnam7, Guozhu Li8,9, John M. Harlander10, Kenneth D. Marr3, and Jonathan J. Makela11
Maosheng He et al.
  • 1Leibniz Institute of Atmospheric Physics, Kühlungsborn, Germany (
  • 2Ann & H.J. Smead Department of Aerospace Engineering Sciences, University of Colorado, Boulder, USA
  • 3Naval Research Laboratory, Washington, DC, USA
  • 4Space Sciences Laboratory, University of California Berkeley, USA
  • 5Universidade Estadual da Paraíba, Brazil
  • 6Department of Physics, Sri Venkateswara University, Tirupati, India
  • 7National Atmospheric Research Laboratory, Tirupati, India
  • 8Beijing National Observatory of Space Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
  • 9College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
  • 10Space Systems Research Corporation, Alexandria, VA, USA
  • 11Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, IL, USA

In the mesosphere and lower-thermosphere, quasi-2-day waves are spectacular planetary-scale oscillations. Almost all relevant observational studies are based on ground-based single-station or single-satellite methods and, therefore, cannot determine the zonal wavenumber unambiguously. We employ a series of multi-station methods on winds measured by four longitudinally separated low-latitude ground-based radars in the current work. These methods help us to determine two dominant zonal wavenumbers at 80–100 km altitude. These results are used to complement satellite measurements. The agreement between datasets is extraordinary, allowing us to extend the characteristics of the waves to higher altitudes using satellite measurements.

The current work was published in He et al. (2021,, which was extended into a broad altitude range up to the topside F-region in Forbes et al. (2021,

How to cite: He, M., Chau, J. L., Forbes, J. M., Zhang, X., Englert, C. R., Harding, B. J., Immel, T. J., Lima, L. M., Rao, S. V. B., Ratnam, M. V., Li, G., Harlander, J. M., Marr, K. D., and Makela, J. J.: Quasi-2-Day Wave in Low-Latitude Atmospheric Winds as Viewed From the Ground and Space During January–March, 2020, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-2763,, 2022.