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Determination of turbulent energy dissipation rate directly from MF-radar determined velocity

Abstract

MF radar systems are able to determine horizontal neutral winds in the mesosphere and, to some extent in the lower thermosphere by cross-correlations of signals received at spaced antennas. Essentially, by also computing auto-correlations, signal fading may be measured which in turn is thought to be largely attributable to turbulence. Hitherto, estimates of upper limits for the turbulent energy dissipation rate have been derived from the characteristic fading times. In this paper, we propose that power spectra of the velocity components themselves may be used to yield estimates of turbulent energy dissipation rate. 2-minute resolution velocities from the Universities of Saskatchewan, Tromsø and Nagoya joint MF radar at 69°N, 19°E are used in a pilot analysis to illustrate and ratify the method.

References

  • Briggs, B. H., The analysis of spaced sensor records by correlation techniques, Handb. MAP, 13, 166–186, 1984.

    Google Scholar 

  • Gardner, C. S., C. A. Hostetler, and S. Lintelman, Influence of the mean wind field on the separability of atmospheric perturbation spectra, J. Geophys. Res., 98, 8859–8872, 1993.

    Article  Google Scholar 

  • Hall, C. M. and T. Aso, Mesospheric velocities and buoyancy subrange spectral slopes determined over Svalbard by ESR, Geophys. Res. Lett., 26, 1685–1688, 1999.

    Article  Google Scholar 

  • Hall, C. M., C. E. Meek, and A. H. Manson, Turbulent energy dissipation rates from the University of Tromsø/University of Saskatchewan MF radar, J. Atmos. Solar Terr. Phys., 60, 437–440, 1998a.

    Article  Google Scholar 

  • Hall, C. M., A. H. Manson, and C. E. Meek, Seasonal variation of the turbopause: One year of turbulence investigation at 69°N by the joint University of Tromsø/University of Saskatchewan MF radar, J. Geophys. Res., 103, 28769–28773, 1998b.

    Article  Google Scholar 

  • Hall, C. M., U.-P. Hoppe, T. A. Blix, E. V. Thrane, A. H. Manson, and C. E. Meek, Seasonal variation of turbulent energy dissipation rates in the polar mesosphere: a comparison of methods, Earth Planets Space, 51, 515–524, 1999.

    Article  Google Scholar 

  • Hedin, A. E., Extension of the MSIS thermosphere model into the middle and lower atmosphere, J. Geophys. Res., 96, 1159–1172, 1991.

    Article  Google Scholar 

  • Hocking, W. K., An assessment of the capabilities and limitations of radars in measurements of upper atmosphere turbulence, Adv. Space Res., 17(11), 37–47, 1996.

    Article  Google Scholar 

  • Hocking, W. K., Strengths and limitations of MST radar measurements of middle-atmosphere winds, Ann. Geophys., 15, 1111–1122, 1997.

    Article  Google Scholar 

  • Hocking, W. K., The dynamical parameters of turbulence theory as they apply to middle atmosphere studies, Earth Planets Space, 51, 525–541, 1999.

    Article  Google Scholar 

  • Labitt, M., Some basic relations concerning the radar measurement of atmospheric turbulence, Mass. Inst. of Technol., Lincoln lab., Work. Pap. 46WP-5001, 1979.

  • Lübken, F.-J., Rocket-borne measurements of small scale structures and turbulence in the upper atmosphere, Adv. Space Res., 17(11), 25–35, 1996.

    Article  Google Scholar 

  • Manson, A. H. and C. E. Meek, Climatologies of mean winds and tides observed by medium frequency radars at Tromsø (70°N) and Saskatchewan (52°N) during 1987–1989. Can. J. Phys., 69, 966–975, 1991.

    Article  Google Scholar 

  • Manson, A. H., C. E. Meek, C. M. Hall, W. K. Hocking, J. MacDougall, S. Francke, K. Igarashi, D. Riggin, D. C. Fritts, and R. Vincent, Gravity wave spectra, directions and wave interactions: Global MLT-MFR network, Earth Planets Space, 51, 543–562, 1999.

    Article  Google Scholar 

  • Meek, C. E., An efficient method for analysing ionospheric drifts data, J. Atmos. Terr. Phys., 42, 835–839, 1980.

    Article  Google Scholar 

  • Meek, C. E., MF radar spaced antenna experiment: wind measurement vs. record length, Atmospheric Dynamics Group Report #1 1997, University of Saskatchewan, Canada, 32 pp., 1997.

    Google Scholar 

  • Press, W. H. and G. B. Rybicki, Fast algorithm for spectral analysis of unevenly sampled data, Astrophys. J., 338, 277–280, 1989.

    Article  Google Scholar 

  • Reid, I. M., On the measurement of gravity waves, tides and mean winds in the low and middle latitude mesosphere and lower thermosphere with MF radar, Adv. Space Res., 18(3), 131–140, 1996.

    Article  Google Scholar 

  • Weinstock, J., Vertical turbulent diffusion in a stably stratified fluid, J. Atmos. Sci., 35, 1022–1027, 1978.

    Article  Google Scholar 

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Hall, C.M., Nozawa, S., Manson, A.H. et al. Determination of turbulent energy dissipation rate directly from MF-radar determined velocity. Earth Planet Sp 52, 137–141 (2000). https://doi.org/10.1186/BF03351622

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  • DOI: https://doi.org/10.1186/BF03351622

Keywords

  • Gravity Wave
  • Earth Planet Space
  • Energy Dissipation Rate
  • Inertial Subrange
  • Lower Thermosphere