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DOI	10.1007/s00382-018-4358-1
	Investigating the impact of soil moisture on European summer climate in ensemble numerical experiments
	Ardilouze C.; Batté L.; Déqué M.; van Meijgaard E.; van den Hurk B.
发表日期	2019
ISSN	0930-7575
起始页码	4011
结束页码	4026
卷号	52 期号:2020-07-08
英文摘要	A better anticipation of high-impact heat and drought on human activity is the underlying motivation of many climate studies focused on the summer season. Although a large body of research has already highlighted the prominent impact of soil moisture anomalies on summer mid-latitudes climate variability and predictability, it still leaves room for a wide range of uncertainty and sometimes contradictions. The present work aims at revisiting soil moisture sensitivity studies by comparing an idealized ensemble model experiment in which soil moisture conditions are prescribed with a reference experiment in which soil moisture evolves freely. Two regional climate models centered over Europe contribute to these experiments and generate very similar results. Simulations with constrained soil moisture display significantly increased correlation between observed and simulated seasonal anomalies of maximum temperature, precipitation and surface solar radiation, as compared to the reference experiment. This widespread increase is not restricted to regions already known as hot-spots of land–atmosphere coupling such as southern Europe, where the evapotranspiration rate is mainly driven by soil moisture. In spite of a limited change in the ensemble spread, the sensitivity experiments show a substantially modified magnitude of temperature and precipitation variability. A focus on two case studies reveal contrasting results for the 2003 and 2010 heat waves. These results stress the prominent role of soil moisture as a boundary condition of the climate system in Europe, including regions that have not been highlighted by previous sensitivity works. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Ensembles; Land–atmosphere coupling; Regional climate modelling; Soil moisture; Summer climate variability
语种	英语
scopus关键词	climate modeling; climate prediction; climate variation; ensemble forecasting; experimental study; heat wave; numerical method; regional climate; soil moisture; summer; Europe
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146425
作者单位	CNRM, Université de Toulouse, Météo-France, CNRS, Toulouse, France; Royal Netherlands Meteorological Institute (KNMI), De Bilt, Netherlands
推荐引用方式 GB/T 7714	Ardilouze C.,Batté L.,Déqué M.,et al. Investigating the impact of soil moisture on European summer climate in ensemble numerical experiments[J],2019,52(2020-07-08).
APA	Ardilouze C.,Batté L.,Déqué M.,van Meijgaard E.,&van den Hurk B..(2019).Investigating the impact of soil moisture on European summer climate in ensemble numerical experiments.Climate Dynamics,52(2020-07-08).
MLA	Ardilouze C.,et al."Investigating the impact of soil moisture on European summer climate in ensemble numerical experiments".Climate Dynamics 52.2020-07-08(2019).