globalchange  > 气候减缓与适应
DOI: 10.1007/s00382-018-4373-2
WOS记录号: WOS:000460902200066
论文题名:
On the low-frequency variability of wintertime Euro-Atlantic planetary wave-breaking
作者: Messori, Gabriele1,2; Davini, Paolo4,5; Alvarez-Castro, M. Carmen3,6; Pausata, Francesco S. R.1,2,7; Yiou, Pascal3; Caballero, Rodrigo1,2
通讯作者: Messori, Gabriele
刊名: CLIMATE DYNAMICS
ISSN: 0930-7575
EISSN: 1432-0894
出版年: 2019
卷: 52, 期:3-4, 页码:2431-2450
语种: 英语
英文关键词: Planetary wave-breaking ; Low-frequency variability ; Windstorms ; Millennium ; North Atlantic ; NAO
WOS关键词: ATMOSPHERIC BLOCKING ; OSCILLATION ; CYCLONES ; TRENDS ; SPELLS
WOS学科分类: Meteorology & Atmospheric Sciences
WOS研究方向: Meteorology & Atmospheric Sciences
英文摘要:

Planetary wave-breaking can lead to large-scale atmospheric circulation anomalies and favour high-impact weather occurrences. For example, the simultaneous occurrence of anti-cyclonic wave-breaking to the south of the North Atlantic jet and cyclonic wave-breaking to the north, here termed double wave-breaking, has been linked to heightened frequencies of explosive cyclones in the Atlantic basin and destructive windstorms over Western and Continental Europe. The present study analyses the long-term temporal variability of wintertime cyclonic and anti-cyclonic wave-breaking, and the resulting double wave-breaking, in the North Atlantic. We use reanalysis data, proxy reconstructions of the North Atlantic Oscillation (NAO) and a 1000-year coupled global climate model equilibrium simulation under constant pre-industrial forcing. The wave-breaking wavelet spectra highlight a significant ultra-centennial variability in double wave-breaking frequency, which is largely mirrored in the variability of the NAO. However, we note that the NAO wavelet spectra in the different datasets display significant discrepancies. The low-frequency wave-breaking variability is reflected in long-term anomalies of the large-scale atmospheric circulation in the Euro-Atlantic sector. The 100-year periods with the most and least double wave-breaking occurrences display significant and opposite anomalies in both upper and lower-level wind, as well as in the frequency of extreme temperature events and in the magnitude of wind destructiveness over Europe. The latter broadly resembles the wind destructiveness anomalies associated with individual double wave-breaking instances in reanalysis data. The existence of low-frequency variability in an atmospheric pattern related to high-impact weather events has important implications for the study and interpretation of climate change projections and of possible future NAO changes.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/125289
Appears in Collections:气候减缓与适应

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作者单位: 1.Stockholm Univ, Dept Meteorol, Stockholm, Sweden
2.Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden
3.Univ Paris Saclay, Lab Sci Climat & Environm, CNRS, CEA,UVSQ,IPSL,UMR 8212, F-91191 Gif Sur Yvette, France
4.PSL Res Univ, CNRS, Ecole Normale Super, Lab Meteorol Dynam,IPSL, Paris, France
5.CNR, ISAC, Turin, Italy
6.CMCC Fdn, Ctr euroMediterraneo Cambiamenti Climat, Bologna, Italy
7.Univ Quebec Montreal, Dept Sci Terre & Atmosphere, Montreal, PQ, Canada

Recommended Citation:
Messori, Gabriele,Davini, Paolo,Alvarez-Castro, M. Carmen,et al. On the low-frequency variability of wintertime Euro-Atlantic planetary wave-breaking[J]. CLIMATE DYNAMICS,2019-01-01,52(3-4):2431-2450
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