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We propose an approach to resolve waves with multiple spatial scales at a given frequency using ground-based detectors from few longitudinal sectors. The approach is used to investigate near-12 h waves. Results suggest that broadly reported enhancements of two solar nonmigrating tides during sudden stratospheric warming events are just low-frequency-resolved signatures of two neighboring waves. The tides do not enhance.
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ACP | Articles | Volume 19, issue 9
Atmos. Chem. Phys., 19, 5993–6006, 2019
https://doi.org/10.5194/acp-19-5993-2019
Atmos. Chem. Phys., 19, 5993–6006, 2019
https://doi.org/10.5194/acp-19-5993-2019

Research article 07 May 2019

Research article | 07 May 2019

Mesospheric semidiurnal tides and near-12 h waves through jointly analyzing observations of five specular meteor radars from three longitudinal sectors at boreal midlatitudes

Maosheng He and Jorge Luis Chau

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Cited articles

Ahlquist, J. E.: Normal-Mode Global Rossby Waves. Theory and Observations, J. Atmos. Sci., 39, 193–202, https://doi.org/10.1175/1520-0469(1982)039<0193:NMGRWT>2.0.CO;2, 1982. a
Angelats I Coll, M. and Forbes, J. M.: Nonlinear interactions in the upper atmosphere: The s=1 and 5=3 nonmigrating semidiurnal tides, J. Geophys. Res.-Space, 107, 1–18, https://doi.org/10.1029/2001JA900179, 2002. a, b
Azeem, S. M., Killeen, T. L., Johnson, R. M., Wu, Q., and Gell, D. A.: Space-time analysis of TIMED Doppler Interferometer (TIDI) measurements, Geophys. Res. Lett., 27, 3297–3300, https://doi.org/10.1029/1999GL011289, 2000. a
Baumgaertner, A. J., Jarvis, M. J., McDonald, A. J., and Fraser, G. J.: Observations of the wavenumber 1 and 2 components of the semi-diurnal tide over Antarctica, J. Atmos. Sol.-Terr. Phys., 68, 1195–1214, https://doi.org/10.1016/j.jastp.2006.03.001, 2006. a, b, c
Butler, A. H., Seidel, D. J., Hardiman, S. C., Butchart, N., Birner, T., and Match, A.: Defining Sudden Stratospheric Warmings, B. Am. Meteorol. Soc., 96, 1913–1928, https://doi.org/10.1175/BAMS-D-13-00173.1, 2015. a
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Short summary
We propose an approach to resolve waves with multiple spatial scales at a given frequency using ground-based detectors from few longitudinal sectors. The approach is used to investigate near-12 h waves. Results suggest that broadly reported enhancements of two solar nonmigrating tides during sudden stratospheric warming events are just low-frequency-resolved signatures of two neighboring waves. The tides do not enhance.
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