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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Short summary
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.