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Multi-fractal Behaviors of Relative Humidity over China

Atmospheric and Oceanic Science Letters 2013年第2期6卷 74-78页

作者： GAO Li-Hao FU Zun-Tao Department of Atmospheric and Oceanic Sciences & Laboratory for Climate and Ocean-Atmosphere Studies School of Physics Peking University Key Laboratory of Regional Climate-Environment for Temperate East Asia Institute of Atmospheric Physics Chinese Academy of Sciences

The multi-fractal ity over China are studied behaviors of relative humid using the multi-fractal de trended fluctuation analysis （DFA） method. Three multi fractal parameters （the spectrum width Aa, the asymmetry Aaas, and the long-range correlation exponent a0） of the singularity spectrum are introduced to quantify the multi-fractal behaviors. The results show that multi-frac tality exists in daily humidity records over most stations in China and is mainly due to the broad distribution of the probability density of the sequence values. Strong multi fractal behaviors over some stations in the Yunnan, Guangdong, and Inner Mongolia provinces are obvious. These behaviors are mainly caused by different long range correlations between large and small fluctuations. The asymmetry of the singularity of relative humidity records is weak, except for a small number of stations in the far east and west of China, where the singularity spec trum is left-skewed. Finally, the long-range correlations in North China are stronger than those in South China, which indicates better predictability in North China. By studying the parameters of the multi-fractal spectrum, various data of long-range power law correlations of the relative humidity records are obtained, which may pro vide theoretical support for climate prediction.

关键词： long-range correlation scaling exponent multi-fractal multi-fractal detrended fluctuation analysisCitation: Gao L.-H. and Z.-T. Fu 2013: Multi-fractalbehaviors of relative humidity over China Atmos. Oce-anic Sci. Lett. 6 74-78.

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