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Discussion papers
https://doi.org/10.5194/acp-2018-1027
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2018-1027
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 05 Dec 2018

Research article | 05 Dec 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).

Statistical climatology of mid-latitude mesospheric summer echoes characterised by OSWIN radar observations

Dimitry Pokhotelov, Gunter Stober, and Jorge L. Chau Dimitry Pokhotelov et al.
  • Leibniz-Institute of Atmospheric Physics at the University of Rostock, Kühlungsborn, Germany

Abstract. Mid-latitude mesospheric summer echoes (MSEs) appear in radar observations during summer months. The geophysical factors controlling the formation of MSEs include solar and energetic particle ionisation, neutral temperature, turbulence, and meridional wind transport. 12 years of summer month observations with OSWIN radar in Kühlungsborn, Germany have been analysed to detect MSE events and to analyse statistical connections to these controlling factors. A more sensitive and consistent method for deriving signal-to-noise ratio has been utilised. Daily and monthly composite analysis demonstrates strong daytime preference and early summer seasonal preference for MSEs. The statistical results are not entirely conclusive due to the low occurrence rates of MSEs. Nevertheless, it is demonstrated that the meridional wind transport from colder high-latitude summer mesosphere is the important controlling factor, while no clear connection to geomagnetic and solar activity is found.

Dimitry Pokhotelov et al.
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Dimitry Pokhotelov et al.
Dimitry Pokhotelov et al.
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12 years of radar observations from mid-latitude location in Kühlungsborn, Germany have been analysed to study characteristics of mesospheric summer echoes (MSEs). The statistical analysis shows that MSEs have strong daytime preference and early summer seasonal preference. It is demonstrated that the meridional wind transport from polar regions is the important controlling factor for MSEs, while no clear connection to geomagnetic and solar activity is found.
12 years of radar observations from mid-latitude location in Kühlungsborn, Germany have been...
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