Regularities of variations in the structure characteristics of temperatureand wind velocity fields

The regularities of fluctuations in the structure characteristics of atmosp heric turbulence with periods from seconds to minutes are studied. On the b asis of the data obtained from the 300-m tower measurements, the consequenc es of the Kolmogorov-Oboukhov third hypothesis are verified. Corrections ar e made in the dependence of the variance of fluctuations in the logarithms of the turbulence structure characteristics on the normalized averaging sca le, and the domain of its applicability is extended. It is shown that, inst ead of the integral turbulence scale, the realization length T must appear in the relationship. This latter is practically valid if T does not exceed a few minutes. The values of the universal constants are determined for the variance of the logarithms of the structure constants of temperature and w ind velocity under different atmospheric temperature stratifications.