A 420‐Year Perspective on Winter Lake Erie Levels
A 420‐Year Perspective on Winter Lake Erie Levels
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DOI：
10.1029/2022gl099911
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发表时间：
2023-01
影响因子：
5.2
通讯作者：
G. Wiles;K. Devereux;B. Gaglioti;R. D’Arrigo
中科院分区：
文献类型：
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作者：
G. Wiles;K. Devereux;B. Gaglioti;R. D’Arrigo
在这里，我们提出了一个420年之久的冬季湖泊水位重建伊利湖主要基于温度敏感的树轮年表从阿拉斯加，俄勒冈州，和加州。这个经过充分验证的模型解释了131年校准期（1860-1990年）冬季湖泊水位变化的51%以上，并显示了与北太平洋和北大西洋海面温度变化相关的强烈年代际波动，这在相对影响方面交替出现。年代际变化叠加在持续的长期湖平面上升，开始于20世纪中期，与大西洋部门的影响力越来越大。在过去420年的背景下，仪器期间经历了极端的湖泊水位，在Dustbowl期间达到了整个记录的最低点，在2020年达到了最高点。伊利湖水位的波动主要由气候决定，其变化极大地影响了该地区的基础设施和生态系统。
Here, we present a 420‐year‐long winter lake level reconstruction for Lake Erie based primarily on temperature‐sensitive tree‐ring chronologies from Alaska, Oregon, and California. This well‐verified model explains more than 51% of the variance in winter lake levels over a 131‐year calibration period (1860–1990) and shows strong decadal fluctuations related to changes in sea surface temperatures in the North Pacific and the North Atlantic, which alternate in terms of their relative influence. Decadal variability is superimposed on a persistent secular lake level rise that began in the mid‐1900s coinciding with a growing influence of the Atlantic sector. In the context of the last 420 years, the instrumental period experienced extreme lake levels, with the lowest over the entire record during the Dustbowl and the highest in 2020. Fluctuations in Lake Erie water levels are primarily determined by climate, and their variability greatly impacts the region's infrastructure and ecosystems.