Intense turbulence in the polar mesosphere - Rocket and radar measurements

Details Intense turbulence in the polar mesosphere - Rocket and radar measurements Intense turbulence in the polar mesosphere - Rocket and radar measurements

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jatp...52..875k&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 52, Oct.-Nov. 1990, p. 875-891. Research supported by NASA

Computer Science

Sound

35

Atmospheric Turbulence, Mesosphere, Polar Regions, Radar Measurement, Radar Scattering, Rocket Sounding, Backscattering, Doppler Effect, Radar Cross Sections, Radar Echoes, Summer

Scientific paper

Two radars respectively operating at 53.5 MHz and 224 MHz have been used to simultaneously measure the polar mesospheric summer echoes (PMSEs) during the launch of a sounding rocket designed to measure the fluctuations in the electron density in the same height range. Some features of the data obtained are consistent with nearly isotropic, intense, meter-scale turbulence on the day of the observations. A dissipation rate is derived from the spectral width of the 53.5 MHz backscatter signal and from the rocket electron density fluctuation data; the diffusive subrange occurs at a wavelength which is a factor of 10 greater than the viscous subrange. This corresponds to a Schmidt number of about 100.

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