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A study into the effect of the diurnal tide on the structure of the background mesosphere and thermosphere using the new coupled middle atmosphere and thermosphere (CMAT) general circulation model

By M. J. Harris, N. F. Arnold and A. D. Aylward

Abstract

A new coupled middle atmosphere and thermosphere general circulation model has been developed, and some first results are presented. An investigation into the effects of the diurnal tide upon the mean composition, dynamics and energetics was carried out for equinox conditions. Previous studies have shown that tides deplete mean atomic oxygen in the upper mesosphere-lower thermosphere due to an increased recombination in the tidal displaced air parcels. The model runs presented suggest that the mean residual circulation associated with the tidal dissipation also plays an important role. Stronger lower boundary tidal forcing was seen to increase the equatorial local diurnal maximum of atomic oxygen and the associated 0(1S) 557.7 nm green line volume emission rates. The changes in the mean background temperature structure were found to correspond to changes in the mean circulation and exothermic chemical heating

Topics: Atmospheric composition and structure (middle atmosphere – composition and chemistry), Meterology and atmospheric dynamics (middle atmosphere dynamics; waves and tides)
Publisher: European Geosciences Union (EGU), Copernicus Publications, Springer Verlag
Year: 2002
DOI identifier: 10.5194/angeo-20-225-2002
OAI identifier: oai:lra.le.ac.uk:2381/696

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  1. (1996). A coupled thermosphere ionosphere model, Solar terrestrial energy program (STEP), handbook of ionospheric models,
  2. (1996). A Coupled Thermosphere-Ionosphere-Plasmasphere Model (CTIP), Solar Terrestrial Energy Program doi
  3. (1993). A detailed study of heating efficiency in the middle atmosphere, doi
  4. (2000). A new coupled terrestrial mesosphere-thermosphere general circulation model: Studies of dynamic, energetic, and photochemical coupling in the middle and upper atmosphere, PhD Thesis,
  5. (1985). A numerical model of the zonally averaged dynamical and chemical structure of the middle atmosphere, doi
  6. A theoretical study of the distribution of ionisation in the high-latitude ionosphere and the plasmasphere: First results of the mid-latitude trough and the light ion trough, doi
  7. (1994). A thermospheric-ionospheremesosphere-electrodynamics general circulation model (timeGCM): Equinox solar cycle minimum simulations (30–500 km), doi
  8. (1997). An analysis of wind imaging interferometer observations of O(1S) equatorial emission rates using the thermosphere-ionosphere-mesosphere electrodynamics general circulation model, doi
  9. (1997). Chemical kinetics and photochemical data for use in stratospheric modeling, doi
  10. (1997). Doppler imager wind measurements with simulations from the NCAR thermosphereionosphere-mesosphere-electrodynamics circulation model, doi
  11. (1997). Doppler Spread parameterisation of gravity wave momentum deposition in the middle atmosphere, Part I, Basic formulation, doi
  12. (2000). Electric field variability associated with the Millstone Hill electric field model, doi
  13. (1995). Energetics of the mesosphere and thermosphere, Upper mesosphere and lower thermosphere: A review of experiment and theory, Geophysical monograph 87, AGU, doi
  14. (1994). Energy released by recombination of atomic oxygen and related species at mesopause heights, doi
  15. (1991). Extension of the MSIS Thermosphere model into the middle and lower atmosphere, doi
  16. (1997). Global simulations and observations of O(1S), O2(16) and OH mesospheric nightglow emissions, 102, A9, 19 949, doi
  17. (1999). Gravity wave interactions with mesospheric planetary waves: A mechanism for penetration into the thermosphereionosphere system, doi
  18. (1995). Long-term variability in the solar diurnal tide observed by HRDI and simulated by the GSWM, doi
  19. (1992). Mean vertical wind in the 98, doi
  20. (1997). Medium energy particle precipitation influences on the mesosphere and lower thermosphere, doi
  21. (1991). Middle atmosphere heating by exothermic chemical reactions involving odd hydrogen species, doi
  22. (1980). Nitric oxide cooling in the terrestrial thermosphere, doi
  23. (1999). Numerical modeling of Chemical-Dynamical Coupling in the Upper Stratosphere and Mesosphere, doi
  24. (1995). On modelling migrating solar tides, doi
  25. (1987). On the global mean structure of the thermosphere, doi
  26. (1993). On the role of atomic oxygen on the dynamics and energy budget of the mesosphere and lower thermosphere, doi
  27. (1978). Parameterization of the atmospheric heating rate from 15 to 120 km due to O2 and O3 absorption of solar radiation, doi
  28. (1985). Photochemistry and transport of carbon monoxide in the middle atmosphere, doi
  29. (1996). Satellite observations of thermospheric tides : Results from the wind imaging interferometer on UARS, doi
  30. (1997). Seasonal variability of the diurnal tide: Results from the Canadian middle atmosphere general circulation model, doi
  31. The solar ultraviolet heating efficiency in the mid-latitude thermosphere, doi
  32. (1998). The temperature of the upper atmosphere,
  33. (1999). The two-level structure of the mesopause: A model study, doi
  34. (1997). Thermal tides and studies to tune the mechanistic tidal model using UARS observations, doi
  35. (1995). Tidal influence on O(1S) airglow emission rate distributions at the geographic equator as observed by WINDII, doi

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