RV: Importance of autumn sea ice to winter snowfall [Letters (Online Only)]

Fuente: Proceedings of the National Academy of Sciences current issue
Expuesto el: martes, 10 de julio de 2012 15:04
Autor: Li, J., Wu, Z.
Asunto: Importance of autumn sea ice to winter snowfall [Letters (Online Only)]

 

Jianping Lia,1 and Zhiwei Wub,c 1.      aState Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; 2.      bKey Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science & Technology, Nanjing, Jiangsu 210044, China; and 3.      cAtmospheric Numerical Weather Prediction Section, Environment Canada, Dorval, QC, Canada H9P 1J3 In their contribution to PNAS, Liu et al. (1) suggested that the recent decline of Arctic sea ice has played a critical role in recent cold and snowy winters in the Northern Hemisphere (NH). This study is very interesting, but we believe it deserves several clarifications. First, in 2010, Wu et al. (2) discovered the importance of autumn Arctic sea ice in triggering regional cold extremes; for example, the 2007–2008 winter, when the NH (particularly East Asia) was struck by severe, record-breaking snowstorms. Liu et al. (1) applied the same idea to East Asia, Europe, and North America. In an interpretation of the Arctic low boundary effect, Wu et al. (2) used a simplified general circulation … ↵1To whom correspondence should be addressed. E-mail: ljp{at}lasg.iap.ac.cn.

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