中国气温涨落层次结构的区域性特征  

Local Characteristics of Hierarchical Structures in Climate Temperature Fluctuations in China

作　　者：佘振苏[1] 陈炯[1] 梁爽[1] 刘式达[1] 

机构地区：[1]北京大学力学与工程科学系湍流与复杂系统研究国家重点实验室

出　　处：《气候与环境研究》2002年第3期339-344,共6页Climatic and Environmental Research

基　　金：国家自然科学基金委员会杰出青年科学基金(1825503);国家自然科学基金资助项目40035010及49975024;教育部优秀回国人员基金资助

摘　　要：运用近年来发展的湍流层次结构模型分析中国气温序列的涨落,研究其层次相似结构的区域性特征。通过对全国160个站点近50年来的月平均气温距平序列的分析,发现层次相似律基本上都存在,得到的层次相似系数β具有一定的区域分布特征。我们对β的含义进行了讨论,并研究了β的区域分布以及造成这种分布的原因。Multi-scale fluctuations in climate temperature variations are analyzed in the framework of the Hierarchical Structure model of turbulence. Through an analysis of the monthly mean temperature series in recent 50 years in 160 stations in China, it is shown that the hierarchical symmetry exists in climate temperature fluctuations. We obtain an hierarchical similarity parameter β from 0.49- 0.77 in the different regions, which seems to be consistent with the climate character in those region. We also find that extreme fluctuation events are the main cause of smaller β value, implying that stronger intermittency is associated with extreme fluctuations in climate dynamics.

关 键 词：中国 层次相似律 气温变化 区域性特征 大气环流 

分 类 号：P423.3[天文地球—大气科学及气象学]