气候变化领域集成服务门户(CCPortal): Observed Subdecadal Variations of European Summer Temperatures

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DOI	10.1029/2019GL086043
	Observed Subdecadal Variations of European Summer Temperatures
	Müller W.A.; Borchert L.; Ghosh R.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	We identify subdecadal variations in European summer temperatures in coupled and uncoupled century-long reanalyses. Spectral analyses reveal significant peaks at 5–10 years in the midtwentieth century. The subdecadal variations show substantial amplitudes of ~1–1.5 °C, associated with extremely warm summers during their positive phases. We use forced ocean model experiments and show that the European summer temperature variations are associated with the subdecadal coupled North Atlantic climate system. A positive winter NAO-like forcing is associated with changes in the ocean circulation and mass and heat convergence occurring 1–2 years prior to European summer temperature rise. Ocean heat content and sea surface temperature increase in the subtropical North Atlantic. The atmospheric response is barotropic and induces wave activity fluxes toward the European continent, modulation of the jet positions, and blocking frequency. The atmospheric response establishes a pathway connecting the subdecadal coupled North Atlantic climate system to European summer temperature. © 2019. The Authors.
英文关键词	Climate models; Fluxes; Oceanography; Spectrum analysis; Surface waters; climate; extremes; observations; subdecadal; summer; variability; Atmospheric temperature; convergence; decadal variation; extreme event; jet; sea surface temperature; summer; wave; Atlantic Ocean; Atlantic Ocean (North)
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170850
作者单位	Max-Planck Institute for Meteorology, Hamburg, Germany; Sorbonne Universites, LOCEAN Laboratoriy, Institute Pierre Simon Laplace (IPSL), Paris, France
推荐引用方式 GB/T 7714	Müller W.A.,Borchert L.,Ghosh R.. Observed Subdecadal Variations of European Summer Temperatures[J],2020,47(1).
APA	Müller W.A.,Borchert L.,&Ghosh R..(2020).Observed Subdecadal Variations of European Summer Temperatures.Geophysical Research Letters,47(1).
MLA	Müller W.A.,et al."Observed Subdecadal Variations of European Summer Temperatures".Geophysical Research Letters 47.1(2020).