Data from a boundary-layer experiment conducted over a flat, uniform site in Minnesota provide a clue to the behaviour of the low-frequency peak in surface-layer horizontal velocity spectra. This portion of the spectra shows systematic behaviour only when plotted in dimensionless coordinates appropriate to the mixed layer, whereas the inertial subrange frequencies follow Monin-Obukhov similarity. Based on this observation, interpolation formulae for both the longitudinal and the lateral velocity components are derived. The expressions involve the boundary-layer depth in addition to the usual surface-layer parameters. (A)
CITATION STYLE
Kaimal, J. C. (1978). Horizontal velocity spectra in an unstable surface layer. Journal of the Atmospheric Sciences, 35(1, Jan.1978), 18–24. https://doi.org/10.1175/1520-0469(1978)035<0018:hvsiau>2.0.co;2
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