Articles | Volume 18, issue 21
Research article
02 Nov 2018
Research article |  | 02 Nov 2018

Forcing mechanisms of the terdiurnal tide

Friederike Lilienthal, Christoph Jacobi, and Christoph Geißler

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Subject: Dynamics | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Mesosphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Akmaev, R.: Seasonal variations of the terdiurnal tide in the mesosphere and lower thermosphere: a model study, Geophys. Res. Lett., 28, 3817–3820,, 2001. a, b, c, d, e, f, g, h, i, j
Andrews, D. G., Holton, J. R., and Leovy, C. B.: Middle Atmosphere Dynamics, Academic Press Inc. Ltd., London, 1987. a, b, c
Beard, A. G., Mitchell, N. J., Williams, P. J. S., and Kunitake, M.: Non-linear interactions between tides and planetary waves resulting in periodic tidal variability, J. Atmos. Sol.-Terr. Phys., 61, 363–376,, 1999. a, b
Beldon, C., Muller, H., and Mitchell, N.: The 8-hour tide in the mesosphere and lower thermosphere over the UK, 1988–2004, J. Atmos. Sol.-Terr. Phys., 68, 655–668,, 2006. a, b, c, d, e
Cevolani, G. and Bonelli, P.: Tidal activity in the middle atmosphere, Il Nuovo Cimento C, 8, 461–490,, 1985. a, b
Short summary
The terdiurnal solar tide is an atmospheric wave, owing to the daily variation of solar heating with a period of 8 h. Here, we present model simulations of this tide and investigate the relative importance of possible forcing mechanisms because they are still under debate. These are, besides direct solar heating, nonlinear interactions between other tides and gravity wave–tide interactions. As a result, solar heating is most important and nonlinear effects partly counteract this forcing.
Final-revised paper