Revisiting Multifractality in Rainfall Fields

Revisiting Multifractality in Rainfall Fields
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重新审视降雨场中的多重分形

DOI：
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发表时间：
2003
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通讯作者：
A. Provenzale
A. Provenzale
中科院分区：
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文献类型：
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作者：
L. Ferraris;S. Gabellani;U. Parodi;N. Rebora;J. Hardenberg;A. Provenzale

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本文研究了全球大气研究计划（GARP）大西洋热带试验（GATE）期间所测降水强度场的多重分形性质，并指出不能拒绝原假设，即降水强度场是由线性高斯过程的非线性变换产生的。这些结果表明，降雨场的多重分形级联或作为一个线性高斯过程的非线性变换的选择应基于物理动机，而不仅仅是数据分析的结果。
Abstract The multifractal properties of a set of precipitation intensity fields measured during the Global Atmospheric Research Program (GARP) Atlantic Tropical Experiment (GATE) are studied, and it is shown that one cannot reject the null hypothesis that the fields are generated by a nonlinear transformation of a linear Gaussian process. These results indicate that the choice of representing rainfall fields in terms of multifractal cascades or as a nonlinear transformation of a linear Gaussian process should be based on physical motivations and not solely on the outcome of data analysis.