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CR200/CR200X Series Dataloggers - Campbell Scientific

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Section 11. Programming Resource Library<br />

Scalar mean horizontal wind speed, S:<br />

where in the case of orthogonal sensors:<br />

Unit vector mean wind direction,<br />

where<br />

or, in the case of orthogonal sensors<br />

where<br />

Standard deviation of wind direction (Yamartino algorithm)<br />

where,<br />

and Ux and Uy are as defined above.<br />

122

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