Enhanced signature of solar variability in Eurasian winter climate

被引：99

作者：

Woollings, T. ^{[1
]}

Lockwood, M. ^{[1
]}

Masato, G. ^{[1
]}

Bell, C. ^{[1
]}

Gray, L. ^{[1
]}

机构：

[1] Univ Reading, Dept Meteorol, Reading RG6 6BB, Berks, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2010年 / 37卷

关键词：

HOLOCENE; CYCLE; NAO;

D O I：

10.1029/2010GL044601

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We demonstrate that open solar flux (F-s, derivable from geomagnetic data) exhibits stronger correlations with atmospheric circulation variations than conventionally-used measures of solar activity. The circulation anomalies are particularly enhanced over the North Atlantic/Eurasian sector, where there are large changes in the occurrence of blocking and the winter mean surface temperature differs by several degrees between high-and low-solar terciles. The relationship is stronger and simpler for F-s, being more linear between high- and low-solar winters. While the circulation anomalies strongly resemble the North Atlantic Oscillation they also extend deeper into Eurasia, especially in high-solar conditions. This distinct signature may be useful for the detection and attribution of observed changes and also the identification of dynamical mechanisms. Citation: Woollings, T., M. Lockwood, G. Masato, C. Bell, and L. Gray (2010), Enhanced signature of solar variability in Eurasian winter climate, Geophys. Res. Lett., 37, L20805, doi:10.1029/2010GL044601.

引用

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