Short‐range vertical diffusion in stable conditions

1 April 1965

journal article
Published by Wiley in Quarterly Journal of the Royal Meteorological Society

Vol. 91 (388) , 175-183
https://doi.org/10.1002/qj.49709138807

Abstract

Experiments have been carried out to determine vertical diffusion in stable conditions at distances of 100 or 200 m from a continuous cross‐wind line source. Simultaneous measurements of vertical turbulence provide the opportunity to test an empirical method of estimating diffusion from wind fluctuation measurements, based essentially on the ideas of Hay and Pasquill (1959), but also attempting to take into account the variation of turbulence with height. The results suggest a fairly systematic variation with stability of the ratio of the Lagrangian and Eulerian scales of turbulence, from values of about two in near neutral stability, to at least ten in rather stable conditions.

Keywords

This publication has 8 references indexed in Scilit:

Measurements of lagrangian and eulerian properties of turbulence at a height of 2,500 ft
Quarterly Journal of the Royal Meteorological Society, 1964
A band-pass filter technique for recording atmospheric turbulence
British Journal of Applied Physics, 1963
The determination of eddy diffusivity from measurements of turbulent energy
Quarterly Journal of the Royal Meteorological Society, 1963
Scale analysis of atmospheric turbulence at 2 m
Quarterly Journal of the Royal Meteorological Society, 1962
Diffusion from a Continuous Source in Relation to the Spectrum and Scale of Turbulence
Published by Elsevier ,1959
Wind structure and evaporation in a turbulent atmosphere
Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1934
A theory of eddy diffusion in the atmosphere
Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1932
Diffusion by Continuous Movements
Proceedings of the London Mathematical Society, 1922