Nonlinearity and Fractal Properties of Climate Change during the Past 500 Years in Northwestern China

Autor: Shiquan Wan, Qunqun Liu, Jianxin Zou, Wenping He
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Discrete Dynamics in Nature and Society, Vol 2016 (2016)
Druh dokumentu: article
ISSN: 1026-0226
1607-887X
DOI: 10.1155/2016/4269431
Popis: By using detrended fluctuation analysis (DFA), the present paper analyzed the nonlinearity and fractal properties of tree-ring records from two types of trees in northwestern China, and then we disclosed climate change characteristics during the past 500 years in this area. The results indicate that climate change in northwestern China displayed a long-range correlation (LRC), which can exist over time span of 100 years or longer. This conclusion provides a theoretical basis for long-term climate predictions. Combining the DFA results obtained from daily temperatures records at the Xi’an meteorological observation station, which is near the southern peak of the Huashan Mountains, self-similarities widely existed in climate change on monthly, seasonal, annual, and decadal timescales during the past 500 years in northwestern China, and this change was a typical nonlinear process.
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