Abstract: A new instrument is presented to measure the wind vector under fouling circumstances, such as spray conditions just above the sea. It is in principle a combination of six pressure tubes, arranged in three mutually orthogonal ...

Abstract: A model for the upwind influence of bluff bodies on a flow developed by Wyngaard is extended to include bodies without axial symmetry; i.e., ellipsoids with three unequal axes. The requirements and limits for the application ...

Abstract: To obtain accurate results from flux measurements with the eddy-correlation method, one has to be very sure about the causes of any mean vertical wind speed. Furthermore, it is generally not sufficient to use simple ...

Abstract: One of the important characteristics of an anemometer is its spatial resolution. A three-dimensional generalization is given of a method to calculate the transfer function as a function of the wavenumber, devised by Kaimal ...

Abstract: With video equipment and image processing software the authors have measured the whitecap coverage of the sea surface near the Dutch coast. Reality proved the initial idea about the simplicity of this way of whitecap ...

Abstract: An earlier paper introduced a new type of fast-responding vector wind meter, designed for adverse conditions, such as those that exist low over the sea surface. The most critical part of this instrument, its sensor head, ...