The wind speed at any site can be written as the sum of its average v plus
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The wind speed at any site can be written as the sum of its average 〈v〉 plus a fluctuating term that averages to zero, v(t) = 〈v〉 + δv(t). Show that the effect of the fluctuations is always to make 〈v3〉 greater than 〈v〉3.
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