Articles | Volume 42, issue 1
https://doi.org/10.5194/angeo-42-29-2024
https://doi.org/10.5194/angeo-42-29-2024
Regular paper
 | 
20 Feb 2024
Regular paper |  | 20 Feb 2024

Observations of polar mesospheric summer echoes resembling kilometer-scale varicose-mode flows

Jennifer Hartisch, Jorge L. Chau, Ralph Latteck, Toralf Renkwitz, and Marius Zecha

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Cited articles

Chau, J. L., McKay, D., Vierinen, J. P., La Hoz, C., Ulich, T., Lehtinen, M., and Latteck, R.: Multi-static spatial and angular studies of polar mesospheric summer echoes combining MAARSY and KAIRA, Atmos. Chem. Phys., 18, 9547–9560, https://doi.org/10.5194/acp-18-9547-2018, 2018. a
Chau, J. L.: ChauGRL2021, Leibniz Institute of Atmospheric Physics at the University of Rostock [data set], https://doi.org/10.22000/396, 2021. a
Chau, J. L., Marino, R., Feraco, F., Urco, J. M., Baumgarten, G., Lübken, F., Hocking, W. K., Schult, C., Renkwitz, T., and Latteck, R.: Radar Observation of Extreme Vertical Drafts in the Polar Summer Mesosphere, Geophys. Res. Lett., 48, e2021GL094918, https://doi.org/10.1029/2021GL094918, 2021. a, b, c, d, e, f, g, h, i, j, k, l, m
Dewan, E. M. and Picard, R. H.: Mesospheric bores, J. Geophys. Res.-Atmos., 103, 6295–6305, https://doi.org/10.1029/97JD02498, 1998. a, b, c, d, e, f, g
Dong, W., Fritts, D. C., Thomas, G. E., and Lund, T. S.: Modeling Responses of Polar Mesospheric Clouds to Gravity Wave and Instability Dynamics and Induced Large-Scale Motions, J. Geophys. Res.-Atmos., 126, e2021JD034643, https://doi.org/10.1029/2021JD034643, 2021. a, b
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Scientists are studying the mesosphere and lower thermosphere using radar in northern Norway. They found peculiar events with strong upward and downward air movements, happening frequently (up to 2.5 % per month) from 2015 to 2021. Over 700 such events were noted, lasting around 20 min and expanding the studied layer. A total of 17 % of these events had extreme vertical speeds, showing their unique nature.
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