By B. B. Hicks (auth.), Bruce B. Hicks (eds.)
In the micrometeorological literature, reference is typically made to the 'Businger-Dyer Profiles' or the 'Dyer-Businger profiles/relations' with out bearing on the foundation of those family members. for instance, within the textbook on 'Atmospheric Turbulence' by means of Panofsky and Dutton (1984) on p. 134, reference is made to the 'Businger-Dyer formula'. so as to add to the secret, those authors refer on p. 141 to the Businger-Dyer-Pandolfo empirical end result (Businger, 1966; Pandolfo, 1966) that during volatile air • Z r (1) Ri=-== ... L So it looked as if it would me that it might be acceptable for this factor of Boundary-Layer Meteorology that's devoted to Arch Dyer, to return to 1965 and describe the situations that resulted in the above pointed out profiles as I be mindful them. 2. Aspendale, 1965 within the educational 12 months 1965-1966 i discovered myself in Australia on a sabbatical go away. the 1st a part of this go away used to be spent on the CSIRO department of Meteorological Physics in Aspendale, Victoria. It was once in lots of methods a sensible choice. the autumn is exchanged for spring, SE Australia is a delightful position to be in spring and summer time, and the scientists within the department have been hospitable and stimulating. Priestley, Swinbank, Dyer, Webb, McIlroy, Taylor, Clarke, Deacon and several other others conducted an lively study program.
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Extra resources for Topics in Micrometeorology. A Festschrift for Arch Dyer
The latent heat flux was very small, and the sensible heat flux was of the order of - 10 W m - 2). 3. L. «6) and (7)). -1o_z_ (12) T(OUjoZ)2 The hourly distribution of values of Ri encountered during the experiment, and the mean diurnal cycle, are presented in Figure 6. 2 .. ~. ~. ~. ~.. i :' ....... ". 4 •••• Ij :lllll: .. rl~l~·~ I~.... t·. . : 1 ------i- -~ --; 1T:-~ -: ------1 I ······l·· . -I-'1____---1-______------1- -0. B '--______ o 6 Fig. 6. 12 18 Hours Hourly distribution of Richardson gradient number over the whole period.
1 m s - 1. The source started 0 hr and stopped at 9 hr as indicated by the vertical dashed line. One of the more striking results is the apparent independence of the steady-state concentration, from changes in wind speed. Although wind speeds double with each increase in friction velocity, the normalized steady-state concentration (about 10- 3 S m - 2) only decreases 3 %with each increment of u * . When the simulations were run with different wind speeds but with U and K constant with height, a result similar to Equation (5) was obtained, where the steady-state concentration was inversely proportional to wind speed, a well-known property of the Gaussian plume model.
Station measurements allow establishment of the diurnal variation of the energy budget at one point. The aircraft is an excellent tool for characterization of fluxes above large areas. The flights were performed mainly around midday. We used as a reference the data gathered in the Koorin experiment, which was carried out in conditions close to those of the ECLATS experiment (tropical region, savanna land, dry period). These data allow computation of the ground energy budget. We compared the diurnal cycle of the energy budget for both experiments and analysed more accurately the budget at midday, since we also have the airborne flux measurements at that time.
Topics in Micrometeorology. A Festschrift for Arch Dyer by B. B. Hicks (auth.), Bruce B. Hicks (eds.)