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Estimation of surface stress over a forest from sodar measurements and its use to parameterize the stable boundary-layer height

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Abstract

Sodar observations from three nights of the HAPEX-MOBILHY experiment have been used to compute covariances between single measurements of the three velocity components. From these, estimates of a low frequency friction velocityu * are derived which show better correlation with observed values of the stable boundary layer (SBL) height,h, than directu *-measurements by an ultrasonic anemometer. On the contrary, interdiurnal variability ofh is better correlated with directu *-measurements. These findings should be mainly due to the problem of different spectral and spatial representativity of the twou *-values.

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Beyrich, F., Kotroni, V. Estimation of surface stress over a forest from sodar measurements and its use to parameterize the stable boundary-layer height. Boundary-Layer Meteorol 66, 93–103 (1993). https://doi.org/10.1007/BF00705461

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  • DOI: https://doi.org/10.1007/BF00705461

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