Enhanced signature of solar variability in Eurasian winter climate
Enhanced signature of solar variability in Eurasian winter climate
复制标题
DOI：
10.1029/2010gl044601
复制
发表时间：
2010-10
影响因子：
5.2
通讯作者：
T. Woollings;M. Lockwood;G. Masato;C. Bell;L. Gray
中科院分区：
文献类型：
--
作者：
T. Woollings;M. Lockwood;G. Masato;C. Bell;L. Gray
我们证明，开放的太阳通量（Fs，可从地磁数据导出）表现出更强的相关性与大气环流的变化比传统上使用的太阳活动的措施。北大西洋/欧亚地区的环流异常尤其增强，那里的阻塞发生率变化很大，冬季平均表面温度在太阳高度和太阳高度之间存在几度差异。Fs的关系更强，更简单，在高和低太阳能冬季之间更线性。虽然环流异常与北大西洋涛动非常相似，但它们也延伸到欧亚大陆更深的地方，特别是在太阳活动强烈的情况下。这种独特的签名可能是有用的检测和归因观察到的变化，也确定动力学机制。
We demonstrate that open solar flux (Fs, 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 Fs, 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.