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Discussion papers | Copyright
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 07 Aug 2018

Research article | 07 Aug 2018

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

Thermal structure of the mesopause region during theWADIS-2 rocket campaign

Raimund Wörl1, Boris Strelnikov1, Timo P. Viehl1, Josef Höffner1, Pierre-Dominique Pautet2, Michael J. Taylor2, and Franz-Josef Lübken1 Raimund Wörl et al.
  • 1Leibniz Institute of Atmospheric Physics, Kühlungsborn, Germany
  • 2Center for Atmospheric and Space Sciences, Utah State University, Logan, Utah, United States

Abstract. This paper presents simultaneous temperature measurements by three independent instruments during theWADIS-2 rocket campaign in northern Norway (69°N, 14°E) on 5 March 2015. Vertical profiles measured in-situ with the CONE instrument and continuous mobile IAP Fe lidar (Fe lidar) measurements during a period of 24h, as well as horizontal resolved temperature maps of the Utah State University (USU) Advanced Mesospheric Temperature Mapper (AMTM) in the mesopause region are analysed. Vertical and horizontal temperature profiles by all three instruments are in good agreement. An harmonic analysis of the Fe lidar measurements shows the presence of waves with periods of 24h, 12h, 8h, and 6h. Strong waves with amplitudes of up to 10K at 8h and 6h are found. The 24h and 12h components play only a minor role during these observations. In contrast only few short periodic gravity waves are found. Horizontally resolved temperatures measured with the AMTM in the OH layer are used to connect the vertical temperature profiles. In the field of view of 200×160km2 only small deviations from the horizontal mean of the order of 5K are found. Therefore only weak gravity wave signatures occurred. This suggests horizontal structures of more than 200km. A comparison of Fe lidar, rocket-borne measurements, and AMTM temperatures indicate an OH centroid altitude of about 85km.

Raimund Wörl et al.
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Raimund Wörl et al.
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Short summary
Simultaneous temperature measurements during the WADIS-2 rocket campaign are used to investigate the thermal structure of the mesopause region. Vertical and horizontal resolved in-situ and remote measurements are in good agreement and show dominating long-periodic and large-scale waves with periods of 24 h and higher tidal harmonics. Only few gravity waves with periods shorter than 6 h and small amplitudes are there.
Simultaneous temperature measurements during the WADIS-2 rocket campaign are used to investigate...