气候变化领域集成服务门户(CCPortal): Pan-European climate at convection-permitting scale: a model intercomparison study

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DOI	10.1007/s00382-018-4114-6
	Pan-European climate at convection-permitting scale: a model intercomparison study
	Berthou S.; Kendon E.J.; Chan S.C.; Ban N.; Leutwyler D.; Schär C.; Fosser G.
发表日期	2020
ISSN	0930-7575
起始页码	35
结束页码	59
卷号	55
英文摘要	We investigate the effect of using convection-permitting models (CPMs) spanning a pan-European domain on the representation of precipitation distribution at a climatic scale. In particular we compare two 2.2 km models with two 12 km models run by ETH Zürich (ETH-12 km and ETH-2.2 km) and the Met-Office (UKMO-12 km and UKMO-2.2 km). The two CPMs yield qualitatively similar differences to the precipitation climatology compared to the 12 km models, despite using different dynamical cores and different parameterization packages. A quantitative analysis confirms that the CPMs give the largest differences compared to 12 km models in the hourly precipitation distribution in regions and seasons where convection is a key process: in summer across the whole of Europe and in autumn over the Mediterranean Sea and coasts. Mean precipitation is increased over high orography, with an increased amplitude of the diurnal cycle. We highlight that both CPMs show an increased number of moderate to intense short-lasting events and a decreased number of longer-lasting low-intensity events everywhere, correcting (and often over-correcting) biases in the 12 km models. The overall hourly distribution and the intensity of the most intense events is improved in Switzerland and to a lesser extent in the UK but deteriorates in Germany. The timing of the peak in the diurnal cycle of precipitation is improved. At the daily time-scale, differences in the precipitation distribution are less clear but the greater Alpine region stands out with the largest differences. Also, Mediterranean autumnal intense events are better represented at the daily time-scale in both 2.2 km models, due to improved representation of mesoscale processes. © 2018, © Crown 2018.
英文关键词	Convection; Convection-permitting models; Diurnal cycle; Europe; Mediterranean
语种	英语
scopus关键词	atmospheric convection; climate modeling; comparative study; diurnal variation; precipitation (climatology); spatial distribution; Germany; Mediterranean Sea; Switzerland; United Kingdom
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/145425
作者单位	Met Office Hadley Centre, FitzRoy Rd, Exeter, Devon EX1 3PB, United Kingdom; School of Engineering, Newcastle University, Newcastle-upon-Tyne, United Kingdom; Institute for Atmospheric and Climate Science, ETH Zürich, Zürich, Switzerland
推荐引用方式 GB/T 7714	Berthou S.,Kendon E.J.,Chan S.C.,et al. Pan-European climate at convection-permitting scale: a model intercomparison study[J],2020,55.
APA	Berthou S..,Kendon E.J..,Chan S.C..,Ban N..,Leutwyler D..,...&Fosser G..(2020).Pan-European climate at convection-permitting scale: a model intercomparison study.Climate Dynamics,55.
MLA	Berthou S.,et al."Pan-European climate at convection-permitting scale: a model intercomparison study".Climate Dynamics 55(2020).