Wind profile and shear stress at reed-open water interface – recent research achievements in Lake Fertő

Kiss, Melinda and Józsa, János (2015) Wind profile and shear stress at reed-open water interface – recent research achievements in Lake Fertő. Pollack Periodica, 10 (2). pp. 107-122. ISSN 1788-1994

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Abstract

The effect of emergent aquatic canopy on over-lake wind field was investigated through detailed field measurements. The aerodynamic roughness length above reed canopy and above open water was determined from eddy-covariance data. It was found that the aerodynamic roughness length at short fetches could be more sufficiently estimated from wave age relations than from the logarithmical profile formula, indicating that near the canopy wind profile might deviate from the theoretical logarithmical form. The presented calculations lead to an improved understanding of the wind profile realignment and wind shear stress development at the interface of the characteristic lake zones, also enhancing the accuracy of the modeling of various wind-induced processes.

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