Estimation of the vertical turbulent diffusivity from thoron profiles

Y. Ikebe; M. Shimo

doi:10.3402/tellusa.v24i1.10617

Estimation of the vertical turbulent diffusivity from thoron profiles

Tellus

Volume 24 (1972): Issue 1

By: Y. Ikebe and M. Shimo

Open Access

|Jan 1972

Abstract

Field measurements of the vertical Tn profiles were carried out on the university campus. On comparison of the observed Tn profiles with those calculated by assuming K = α + bz, some discrepancies were found between them. Profiles of the vertical diffusivity K were estimated from observed Tn profiles. It was found that the estimated K profiles may be expressed well by an experimental formula; K_Tn(z) = azβ. Some discrepancies were found between the diffusivity K_Tn estimated from Tn profiles and the diffusivity K_M calculated from wind speed by assuming neutral stability. These discrepancies are discussed in relation to the stability of the atmosphere.

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