Northern Hemisphere Stationary Waves in a Changing Climate
Northern Hemisphere Stationary Waves in a Changing Climate
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DOI：
10.1007/s40641-019-00147-6
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发表时间：
2019-11
影响因子：
9.5
通讯作者：
Robert C.J. Wills;R. White;X. Levine
中科院分区：
文献类型：
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作者：
Robert C.J. Wills;R. White;X. Levine
复习目的驻波是时间平均大气环流中行星尺度的纵向变化。这里，我们考虑了冬季和夏季北半球驻波对气候变化的预测响应。我们讨论了响应在不同指标上的差异，确定了稳健的响应，并审查了拟议的机制。最近的发现气候模型预测了盛行风型的变化，以及对区域降水、温度和极端事件的相应影响。最近的工作提高了我们对驻波和区域气候之间联系的理解，并发现了对气候变化的强大的驻波响应，包括冬季纬向长度的增加，太平洋冬季环流的极地移动，季风环流的减弱，以及驻波环流的全面减弱，特别是它们的辐散分量和准静止扰动。事实证明，理想化的研究有助于理解特定大气环流特征的气候反应，并应继续成为未来研究的重点。
Purpose of ReviewStationary waves are planetary-scale longitudinal variations in the time-averaged atmospheric circulation. Here, we consider the projected response of Northern Hemisphere stationary waves to climate change in winter and summer. We discuss how the response varies across different metrics, identify robust responses, and review proposed mechanisms.Recent FindingsClimate models project shifts in the prevailing wind patterns, with corresponding impacts on regional precipitation, temperature, and extreme events. Recent work has improved our understanding of the links between stationary waves and regional climate and identified robust stationary wave responses to climate change, which include an increased zonal lengthscale in winter, a poleward shift of the wintertime circulation over the Pacific, a weakening of monsoonal circulations, and an overall weakening of stationary wave circulations, particularly their divergent component and quasi-stationary disturbances.SummaryNumerous factors influence Northern Hemisphere stationary waves, and mechanistic theories exist for only a few aspects of the stationary wave response to climate change. Idealized studies have proven useful for understanding the climate responses of particular atmospheric circulation features and should be a continued focus of future research.