Abstract
Measurements of the gravity wave spectrum in the upper stratosphere and mesosphere are scarce compared to those in the troposphere and lower thermosphere, which are easier to probe via in situ and remote sensing techniques. This paucity of measurements impacts the parameterization of gravity waves in general circulation models of the middle atmosphere, since the effects of gravity waves are not adequately constrained by measurements. The development of a larger power-aperture product lidar at The University of Western Ontario has allowed the measurement of the gravity wave spectrum at high temporal-spatial resolution. These measurements have been used to impact three key areas relevant to parameterizations: the thermodynamic perturbations caused by gravity waves, the variability of the spatial and temporal spectra and the estimation of the eddy diffusion coefficient. After a brief introduction to the instrumentation (Section 2), Section 3 describes an extension of the initial measurements of superadiabatic lapse rates by Sica and Thorsley (1996a). A taste of the spatial and temporal spectral retrievals possible with the lidar measurements is given in Section 4. In Section 5, the spectra are used to calculate energy dissipation and the eddy diffusion coefficient.
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References
Chanin, M. L. and A. Hauchecorne (1984) Lidar Studies of Temperature and Density Using Rayleigh Scattering, in Handbook for MAP: Ground-Based Techniques, 13, ICSU Scientific Committee on Solar Terrestrial Physics, Urbana, Illinois, paper 7.
Gardner, C. S., M. S. Miller and C. H. Liu (1989a) Rayleigh lidar observations of gravity wave activity in the upper stratosphere at Urbana, Illinois. J. Atmos. ScL, 46, 1838 – 1854.
Gardner, C. S., D. C. Senft, T. J. Beatty, R. E. Bills and C. A. Hostetler (1989b) Rayleigh and Sodium Lidar Techniques for Measuring Middle Atmosphere Density, Temperature, and Wind Perturbations and their Spectra.World Ionosphere/Thermosphere Study Handbook, 2, ICSU Scientific Committee on Solar Terrestrial Physics, Urbana, Illinois, Chapter 6.
Hamilton, K. (1984) A study of the occurrence of dynamically unstable conditions in the middle atmosphere, Can. J. Phys., 62, 963 – 967.
Hines, C. O. (1965) Dynamical heating of the upper atmosphere, J. Geo- phys. Res., 70, 177 – 183.
Hines, C. O. (1991) The saturation of gravity waves in the middle atmosphere. Part II: Development of Doppler-spread theory. J. Atmos. ScL, 48, 1360 – 1379.
Hocking, W. K. (1991) The effects of middle atmosphere turbulence on coupling between atmospheric regions. J. Geomag. Geoelectn, 43, Suppl., 621 – 636.
Marple, S. L. (1987) Digital spectral analysis. Prentice-Hall, Inc., Chapters 5 – 11.
Mclntyre, ME (1989) On dynamics and transport near the polar meso- pause. J. Geophys. Res., 89, 14617 – 14628.
Press, W. H., S. A Teukolsky, W. T. Vetterling, and B. P. Flannery (1992) Numerical Recipes in FORTRAN\ the Art of Scientific Computing, 2nd edition. Cambridge University Press, 613–622.
Sica, R. J., S. Sargoytchev, P. S. Argall, E. F. Borra, L. Girard, C. T. Sparrow, and S. Flatt (1995) Lidar measurements taken with a large-aperture liquid mirror. 1. Rayleigh-scatter system. Appl. Opt, 34, 6925 – 6936.
Sica, R. J. and M. D. Thorsley (1996a) Measurements of superadiabatic lapse rates in the middle atmosphere. Geophys. Res. Lett, submitted.
Sica, R. J. (1996b) Measurements of the Effects of Gravity Waves in the Middle Atmosphere Using Parametric Models of Density Fluctuations. 1: Spatial and Temporal Spectra. J. Atmos. Set, submitted.
Sica, R. J. (1996c) Measurements of the Effects of Gravity Waves in the Middle Atmosphere Using Parametric Models of Density Fluctuations. 2: Energy Dissipation and Eddy Diffusion. J. Atmos. ScL, submitted.
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© 1997 Springer-Verlag Berlin Heidelberg
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Sica, R.J., Thorsley, M.D. (1997). Measurements of Intermittency in the Upper Stratosphere and Mesosphere. In: Hamilton, K. (eds) Gravity Wave Processes. NATO ASI Series, vol 50. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-60654-0_3
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DOI: https://doi.org/10.1007/978-3-642-60654-0_3
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