Scaling behaviour in daily air humidity fluctuations
We show that the daily average air humidity fluctuations exhibit non-trivial $1/f^α$ behaviour which different from the spectral properties of other meteorological quantities. This feature and the fractal spatial strucure found in clouds make it plausible to regard air humidity fluctuations as a manifestation of self-organized criticality. We give arguments why the dynamics in air humidity can be similar to those in sandpile models of SOC.
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