Abstract
Abstract. The quasi 2-day wave (QTDW) at 82–97 km altitude over Collm (51° N, 13° E) has been observed using a VHF meteor radar. The long-term mean amplitudes calculated using data between September 2004 and August 2014 show a strong summer maximum and a much weaker winter maximum. In summer, the meridional amplitude is slightly larger than the zonal one with about 15 m s−1 at 91 km height. Phase differences are slightly greater than 90° on an average. The periods of the summer QTDW vary between 43 and 52 h during strong bursts, while in winter the periods tend to be more diffuse. On average, the summer QTDW is amplified after a maximum of zonal wind shear which is connected with the summer mesospheric jet and there is a possible correlation of the summer mean amplitudes with the background wind shear. QTDW amplitudes exhibit considerable inter-annual variability; however, a relationship between the 11-year solar cycle and the QTDW is not found.
Reference45 articles.
1. Babadshanov, P. B., Kalchenko, B. V., Kashcheyev, B. L., and Fedynsky, V. V.: Winds in the equatorial lower thermosphere, P. Acad. Sci. USSR, 208, 1334–1337, 1973.
2. Baumgaertner, A. J., McDonald, A. J., Hibbins, R. E., Fritts, D. C., Murphy, D. J., and Vincent, R. A.: Short-period planetary waves in the Antarctic middle atmosphere, J. Atmos. Solar-Terr. Phys., 70, 1336–1350, https://doi.org/10.1016/j.jastp.2008.04.007, 2008.
3. Charney, J. G. and Stern, M. E.: On the Stability of Internal Baroclinic Jets in a Rotating Atmosphere, J. Atmos. Sci., 19, 159–172, https://doi.org/10.1175/1520-0469(1962)019, 1962.
4. Chshyolkova, T., Manson, A., and Meek, C.: Climatology of the quasi two-day wave over Saskatoon (52° N, 107° W): 14 Years of MF radar observations, Adv. Space Res., 35, 2011–2016, https://doi.org/10.1016/j.asr.2005.03.040, 2005.
5. Craig, R. L. and Elford, W. G.: Observations of the quasi 2day wave near 90 km altitude at Adelaide (35° S), J. Atmos. Terr. Phys., 43, 1051–1056, https://doi.org/10.1029/1999JA900030, 1981.
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