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SUMMARYA method suggested earlier by the author to determine turbulent fluxes of heat and momentum from a measured wind profile is tested by using Swinbank's observational data.

Is atmospheric dispersion forecasting an important asset of the early-phase nuclear emergency response management? Is there a 'perfect atmospheric dispersion model'? Is there a way to make the results of dispersion models more reliable and trustworthy? While seeking to answer these questions the multi-model ensemble dispersion forecast system ENSEMBLE will be presented.

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sUMMARYMean values of dimensionless characteristic quantities of turbulence near the ground in relation to stability are given, as derived from data published by Lettau and Davidson (1957).

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