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Fig. 5 | Earth, Planets and Space

Fig. 5

From: On a numerical model for extracting TKE dissipation rate from very high frequency (VHF) radar spectral width

Fig. 5

Non-dimensional TKE dissipation rate plotted against 2kBb. Top left: Base case with abyb = 0, Lby2b = 0.001 (zero altitude and zero wind). Top right: Case with abyb = 10, Lby2b = 0.001 (nonzero altitude). Bottom left: Case with abyb = 0, Lby2b = 5 (nonzero wind). Bottom right: Case with abyb = 10, Lby2b = 5 (nonzero altitude and wind). Solid line is the numerical model, the dotted line is Weinstock and dashed line, White et al. Hocking = 0, waves = 0 and fK = 1, and the upper limit of integrations is \(\infty\), in the above simulations. If instead Bragg wavenumber were imposed as the upper limit, the model would depart from Weinstock values at high values of kB(2b). The transition value of kB(2b) between Weinstock and White et al. formulations depends very much on the values of L/2b and 2a/2b. Because CK = 0.873 and not equal to 1, the numerical model does not asymptote exactly to the two limits (see Appendix B)

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