Dendroclimatology of Yellow-Cedar (Callitropsis nootkatensis) and Temperature Variability on the Western Slopes of the North Cascades in Washington State, USA, from 1333 to 2015 CE
Dendroclimatology of Yellow-Cedar (Callitropsis nootkatensis) and Temperature Variability on the Western Slopes of the North Cascades in Washington State, USA, from 1333 to 2015 CE
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DOI：
10.3959/2021-20
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发表时间：
2022-07
影响因子：
1.6
通讯作者：
Christopher A. Trinies;A. Bunn;C. Robertson;K. Anchukaitis
中科院分区：
文献类型：
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作者：
Christopher A. Trinies;A. Bunn;C. Robertson;K. Anchukaitis
长期古气候温度重建提供了近期人为变暖幅度的背景，有助于量化气候对辐射强迫的响应，并更好地表征自然变率的范围。在北美，温度敏感的树木年轮代理数据仍然稀少，这限制了这些重建的时空范围。本文分析了美国华盛顿州黄杉（Callitropsis nootkatensis）的生长及其与气候的关系。结合实证统计分析和木质发生过程模型，我们发现北Cascades三个高海拔地区的树木年轮年表主要受温度控制。然后，我们使用这些年表来重建公元1333年至2015年期间的夏季温度，并为北美温度敏感树木网络添加了一个新的代理。与现有的大规模空间网格重建的比较表明，该物种提供了有关过去温度的重要本地和区域信息。
ABSTRACT Long-term paleoclimate reconstructions of temperature provide context for the magnitude of recent anthropogenic warming, help quantify the climate response to radiative forcing, and better characterize the range of natural variability. In North America, temperature-sensitive tree-ring proxy data remain sparse, which limits the spatial and temporal extent of these reconstructions. Here we present an analysis of yellow-cedar (Callitropsis nootkatensis) growth in Washington State (USA) and its relationship to climate. Combining empirical statistical analysis with a process model of xylogenesis, we show that tree-ring chronologies from three high-elevation sites in the North Cascades are primarily controlled by temperature. We then use these chronologies to reconstruct summer temperatures over the period 1333 to 2015 CE, adding a new proxy to the North American network of temperature-sensitive trees. Comparison with an existing large-scale spatial gridded reconstruction suggests this species offers important local and regional information on past temperatures.