Abstract
A theory has been developed for extraction of turbulence energy dissipation rates from spectra measured with a radar. It was shown that factors apart from turbulence contribute to the observed spectral widths, and that these factors must be considered if accurate estimates of energy dissipation rates are to be obtained. In particular, beam-width broadening and shear broadening were important. In this paper, the first results obtained with this theory are presented. The results were obtained using the large HF array at Adelaide, Australia, primarily during the southern hemisphere winter of 1981. Results are consistent with rocket measurements of turbulence, with typical values varying between 0.01 and 0.2 W kg −1 at 80–90 km altitude.
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