Sensible heat flux and boundary layer depth measurements by Doppler SODAR and sonic anemometer data

Cinque, G. and Zauri, R. and Di Carlo, P. and Iarlori, M. and Rizi, V. (2000) Sensible heat flux and boundary layer depth measurements by Doppler SODAR and sonic anemometer data. Il nuovo cimento C, 23 C (4). pp. 331-350. ISSN 1826-9885

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A validation of a simple mixed-layer similarity relationship, firstly proposed by Panofsky and McCormick (1960), is presented for wind speeds up to 7 ms21 and over an uneven terrain. The surface heat flux and the Planetary Boundary Layer depth, zi, are retrieved from this relationship, by using SODAR measurements of the vertical velocity variance s 2 w, under the hypothesis that the heat flux linearly decreases with height. All the measurements are relative to days characterized by high-pressure conditions, during periods of well-developed convection. The values of the surface heat flux obtained from such a method are compared with those obtained by applying the eddy correlation technique to the vertical wind velocities and virtual temperatures measured by a sonic anemometer. The values of zi obtained from the same relationship are compared with the height of the lowest inversion layer estimated from the facsimile record of the echoes received by the vertical antenna of the SODAR. The spectral behavior of vertical and longitudinal wind velocity from the anemometer and the SODAR is examined, too. In such a way an independent estimate of zi is obtained from the position of the spectral maximum.

Item Type: Article
Uncontrolled Keywords: Meteorology; Boundary layer structure and processes; Convection, turbulence and diffusion
Subjects: 500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia
Depositing User: Marina Spanti
Date Deposited: 09 Mar 2020 15:16
Last Modified: 09 Mar 2020 15:16

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