Century‐scale solar variability and Alaskan temperature change over the past millennium
Century‐scale solar variability and Alaskan temperature change over the past millennium
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DOI：
10.1029/2004gl020050
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发表时间：
2004-08
影响因子：
5.2
通讯作者：
G. Wiles;R. D’Arrigo;R. Villalba;P. E. Calkin;D. Barclay
中科院分区：
文献类型：
--
作者：
G. Wiles;R. D’Arrigo;R. Villalba;P. E. Calkin;D. Barclay
130个阿拉斯加冰川的地质历史与太阳变化记录的相关性表明，北太平洋和北极地区的多年代际到世纪尺度的温度变化在过去一千年中受到太阳强迫的影响。山地冰川波动主要是夏季降温的记录，横跨阿拉斯加的三个气候区的综合冰川历史表明，大约每200年冰川扩张一次，与太阳变率模式相一致。太平洋年代际涛动和北极涛动的冷期的调节作用，当与太阳活动减少相同时，可能有助于放大冷却，迫使冰川前进。
Correlation of geologic histories from 130 Alaskan glaciers with a record of solar variation suggests that multi‐decadal to century‐scale temperature variations in the North Pacific and Arctic sectors have been influenced by solar forcing over the past thousand years. Mountain glacier fluctuations are primarily a record of summer cooling and the composite glacial history from three climatic regions across Alaska shows ice expansions approximately every 200 years, compatible with a solar mode of variability. The modulating effects of the cold phases of the Pacific Decadal Oscillation and the Arctic Oscillation may, when in phase with decreased solar activity, serve to amplify cooling, forcing glacier advance.