Tree-ring inferred annual mean temperature variations on the southeastern Tibetan Plateau during the last millennium and their relationships with the Atlantic Multidecadal Oscillation
Tree-ring inferred annual mean temperature variations on the southeastern Tibetan Plateau during the last millennium and their relationships with the Atlantic Multidecadal Oscillation
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树轮推断青藏高原东南部近千年年平均气温变化及其与大西洋数十年涛动的关系
DOI：
10.1007/s00382-013-1802-0
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发表时间：
2014-08
期刊：
影响因子：
4.6
通讯作者：
Wang, Zhangyong
中科院分区：
文献类型：
--
作者：
Qin, Chun;Kang, Shuyuan;He, Minhui;Wang, Zhangyong
应用无信号区域曲线标准化和标准树轮年代学方法，建立了青藏高原东南部的两个年轮年表。树木生长与气候的关系表明，前一年的温度变化是林带上部树木生长的主要控制因素。因此，我们开发了一个涵盖公元984-2009年期间的年平均温度重建，并解释了50%的仪器方差。空间相关模式表明，我们的温度重建是TP温度变化的一个合理的替代。在长时间尺度上，温度重建显示出与TP其他区域的温度记录相似的冷暖模式，表明在过去的1000年里，TP的年代际和年代际温度变化总体上是同步的。1140-1350和1600-1800分别是青藏高原较常见的暖季和冷季。我们重建的4个北半球(NH)温度序列的比较表明，在过去的1000年里，TP东南部的温度变化总体上遵循了NH的温度模式。我们的结果还表明，TP上的温度变率受到大西洋十年振荡(AMO)的影响，AMO的暖(冷)相与TP上高于平均(低于平均)的温度有关。
We present two tree-ring chronologies for the southeastern Tibetan Plateau (TP), established by applying the signal-free regional curve standardization and standard dendrochronological methodologies to a set of ring-width series of Tibetan juniper. The relationship between tree growth and climate shows that temperature variability in the previous year is the primary factor controlling tree growth at the upper portion of the forest belt. Accordingly, we developed a mean annual temperature reconstruction covering the period A.D. 984–2009 and explaining 50 % of the instrumental variance. The spatial correlation patterns suggest that our temperature reconstruction is a reasonable proxy for temperature change over the TP. At long time scales, the temperature reconstruction shows similar warm-cold patterns to those in temperature records from other regions of the TP, indicating that decadal and multidecadal temperature variations were generally synchronous across the TP during the past millennium. The periods 1140–1350 and 1600–1800 were common warm and cold episodes over the TP, respectively. Comparison of our reconstruction with four Northern Hemisphere (NH) temperature series indicates that temperature changes on the southeastern TP have generally followed the NH temperature patterns during the past millennium. Our results also suggest that temperature variability over the TP is affected by the Atlantic Multidecadal Oscillation (AMO), with the warm (cool) phases of the AMO associated with above-average (below-average) temperatures over the TP.
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影响因子：
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作者：
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