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A note on alternatively direct measurement of the transfer resistance over vegetation

Xuhui Lee and 5 other contributors

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    Abstract

    The boundary layer transfer resistance is an important parameter in micrometeorology. The most common approach to determining it uses a wind function that is extremely sensitive to the specified roughness length and can suffer large uncertainties, especially for partially vegetated surfaces. In order to avoid using some sensitive parameters not easily determined, a simple apparatus was designed for direct measurement of the resistance. This note reports the preliminary results of a test using the apparatus in a sparse wheat field.