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	Solar activity, global surface air temperature anomaly and pacific decadal oscillation recorded in urban tree rings
	He X. G. ; Chen Z. J. ; Chen W. ; Shao X. M. ; He H. ; Sun Y.
	2007
关键词	urban tree rings sunspot number Pacific decadal oscillation global surface air temperature anomaly wavelet analysis past 6 centuries wavelet analysis climate variability periodicities chronologies growth cycle reconstruction inferences latitudes
英文摘要	A tree ring width chronology developed from 58 samples taken from Chinese pine trees (Pinus tabulaeformis Carr.) growing in Shenyang city was studied to analyze the effects of solar activity, Global Surface Air Temperature Anomalies (GSATA) and the Pacific Decadal Oscillation (PDO) on annual radial growth. An excellent response of tree rings to solar activity and global environmental change was revealed, indicating that these urban Chinese pine trees are a suitable proxy for Sun-Earth system research despite their location in Shenyang, an industrial city. The information derived from annual growth rings of urban Chinese pine trees coincides with records from undisturbed trees in a natural location, and demonstrates significant synchronous response to solar activity in the periodic bands of 5-8, 10-12 and 20-30 years. The wave signal of tree growth was also affected and amplified by the combined effect of the PDO from 1900 to 2004 and GSATA from 1880 to 2004 with a short lag time, revealing 5-8, 11-13, and 20-23 year oscillatory modes. At 20-30 year timescale, Chinese pines validated the strong GSATA influence signal at 20.8 years, and may be the primary cause of the 20 and 23 year periodic waves of tree rings. Shenyang urban tree ring growth also showed high frequency variation (2-4 y) that may be due to low periodicity of solar activity, GSATA, PDO and local climate variations, especially in the 2-4 years band width.
出处	Annals of Forest Science
卷	64
期	7
页	743-756
收录类别	SCI
语种	英语
ISSN号	1286-4560
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/23873]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	He X. G.,Chen Z. J.,Chen W.,et al. Solar activity, global surface air temperature anomaly and pacific decadal oscillation recorded in urban tree rings. 2007.

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