I am working with some wind speed data and need to work out the standard deviation of the magnitude of the horizontal wind. Unfortunately the only information I have is the standard deviation for the streamwise and cross-stream components of the wind (which are orthogonal). Is it possible to derive the standard deviation of the magnitude of the horizontal wind from these?(adsbygoogle = window.adsbygoogle || []).push({});

Any help greatly appreciated.

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# Deriving the standard deviation of a resultant vector

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