Chapter 7: Anemometry II. The WMO has a set of gust definitions: Gust peak speed, p = wind speed associated with a positive gust amplitude. Gust duration,

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Chapter 7: Anemometry II

The WMO has a set of gust definitions: Gust peak speed, p = wind speed associated with a positive gust amplitude. Gust duration, tg = time interval from the beginning of a gust to the end of the gust. Gust magnitude, m = the scalar difference between a gust peak speed and the adjacent lull speed. Gust frequency = number of positive gusts which occur per unit time. Gust amplitude, ga = maximum scalar of the gust from the mean wind speed. Gust lull speed, L = wind speed associated with a negative gust amplitude. Wind Gust

Sonic anemometers measure the time required to transmit an acoustic signal across a fixed path to determine the wind velocity component along that path. The sonic anemometer’s frequency response is limited by the spatial averaging along the path. It responds linearly to the wind speed. Wind Sensing: Speed of Sound

The WMO has a set of gust definitions: Gust peak speed, p = wind speed associated with a positive gust amplitude. Gust duration, tg = time interval from the beginning of a gust to the end of the gust. Gust magnitude, m = the scalar difference between a gust peak speed and the adjacent lull speed. Gust frequency = number of positive gusts which occur per unit time. Gust amplitude, ga = maximum scalar of the gust from the mean wind speed. Gust lull speed, L = wind speed associated with a negative gust amplitude. Wind Gust

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