大気境界層下部の鉛直構造

Abstract

Vertical relationship of the turbulent fluctuations in the layer between 50 and 200 m is studiedby analyzing wind profiles, turbulent fluxes, vertical correlation functions and coherences among200, 100 and 50 m heights. Time lags for the correlation maxima indicate that the phenomenaadvance at higher levels for the vertical wind component and the temperature fluctuations, butthose for the horizontal wind do not indicate the clear peak. The tilt angles of the eddies ob-tained from the lag time of the correlation peak and those obtained from the phase angle are ingood agreements. However, under stable conditions, there are little indications of the verticalcontinuity of the turbulent phenomena.