Caution needed when linking weather extremes to amplified planetary waves
Caution needed when linking weather extremes to amplified planetary waves
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DOI：
10.1073/pnas.1304867110
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发表时间：
2013-05
期刊：
影响因子：
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通讯作者：
J. Screen;I. Simmonds
中科院分区：
文献类型：
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作者：
J. Screen;I. Simmonds
北半球中纬度地区在过去十年中经历了频繁的夏季极端天气(1，2)。在最近一期的PNAS中，Petoukhov等人。(3)提出一个单一的物理机制，帮助解释这些极端天气的发生。他们认为，这种极值与天气尺度行星波，特别是纬向波数m=6-8的大振幅准定常波有关。
The Northern Hemisphere midlatitudes have experienced frequent summer weather extremes in the last decade (1, 2). In a recent issue of PNAS, Petoukhov et al. (3) propose a single physical mechanism that could help explain the occurrence of these weather extremes. They suggest that such extremes are associated with well-developed synoptic-scale planetary waves, in particular large-amplitude quasi-stationary waves with zonal wave numbers of m = 6–8.