Tests of the RCS Method for Preserving Low-Frequency Variability in Long Tree-Ring Chronologies
Tests of the RCS Method for Preserving Low-Frequency Variability in Long Tree-Ring Chronologies
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发表时间：
2003
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通讯作者：
J. Esper;E. Cook;P. Krusic;K. Peters;F. Schweingruber
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作者：
J. Esper;E. Cook;P. Krusic;K. Peters;F. Schweingruber
为了保存树木年轮年表中的多百年长度变异性，区域曲线标准化（RCS）方法从一个区域通用的、非气候性的年龄趋势函数中计算出异常.各种因素的影响，估计的区域曲线（RC）和RCS年表进行了讨论。这些因素是：根据年龄趋势函数计算异常的方法、真实髓距的估计、所用系列的数量、物种组成和立地特征。通过将RCS应用于一组千年树轮数据集，研究了RCS方法的潜力和局限性。RCS被发现是相当强大的测试因素，这表明该方法是一个合适的工具，为保持低频方差长树轮年表。
To preserve multicentennial length variability in annual tree -ring chronologies, the Regional Curve Standardization (RCS) method calculates anomalies from a regionally common, non -climatic age -trend function. The influence of various factors on the estimation of the regional curve (RC) and resulting RCS chronology is discussed. These factors are: the method of calculating anomalies from the age -trend function, estimation of the true pith offset, the number of series used, species composition, and site characteristics. By applying RCS to a collection of millenniumlength tree -ring data sets, the potential and limitations of the RCS method are investigated. RCS is found to be reasonably robust with respect to tested factors, suggesting the method is a suitable tool for preserving lowfrequency variance in long tree -ring chronologies.