cid b1b33061da9de136b341f82a9fddfd955e28d3d881a99df6647ac227ed65f572 · original · via openalex
Title: Flux‐gradient relationships in the constant flux layer Authors: A. J. Dyer; B. B. Hicks Venue: Quarterly Journal of the Royal Meteorological Society Year: 1970 Canonical: doi:10.1002/qj.49709641012 URL: https://doi.org/10.1002/qj.49709641012 Collector: openalex OA: false ABSTRACT Abstract An analysis is made of the Monin‐Obukhov function ΦM in the familiar wind profile equation, using data from two recent expeditions to Gurley (New South Wales) and Hay (New South Wales). In one, the friction velocity u* is determined directly by the eddy correlation method, and in the other, conducted during mid‐winter when small heat‐fluxes were experienced, by the use of a friction coefficient applied to a low‐level wind. By collating with a similar earlier analysis for heat and water vapour transfer, the variations of ΦM, ΦH and ΦW with stability are presented in tabular form in the z/L range − 0.01 to − 1.0. Within this range the empirical relationships ΦM = (1 − 16 z/L)−1/4 and ΦH, W = (1 − 16 z/L)−1/2, and the implied equality between Ri and z/L, are found to approximate the data to within a few per cent.