气候变化领域集成服务门户(CCPortal): Blocking representation in the ERA-Interim driven EURO-CORDEX RCMs

CCPortal

DOI	10.1007/s00382-018-4335-8
	Blocking representation in the ERA-Interim driven EURO-CORDEX RCMs
	Jury M.W.; Herrera S.; Gutiérrez J.M.; Barriopedro D.
发表日期	2019
ISSN	0930-7575
起始页码	3291
结束页码	3306
卷号	52 期号:2020-05-06
英文摘要	While Regional Climate Models (RCMs) have been shown to yield improved simulations compared to General Circulation Model (GCM), their representation of large-scale phenomena like atmospheric blocking has been hardly addressed. Here, we evaluate the ability of RCMs to simulate blocking situations present in their reanalysis driving data and analyse the associated impacts on anomalies and biases of European 2-m air temperature (TAS) and precipitation rate (PR). Five RCM runs stem from the EURO-CORDEX ensemble while three RCMs are WRF models with different nudging realizations, all of them driven by ERA-Interim for the period 1981–2010. The detected blocking systems are allocated to three sectors of the Euro-Atlantic region, allowing for a characterization of distinctive blocking-related TAS and PR anomalies. Our results indicate some misrepresentation of atmospheric blocking over the EURO-CORDEX domain, as compared to the driving reanalysis. Most of the RCMs showed fewer blocks than the driving data, while the blocking misdetection was negligible for RCMs strongly conditioned to the driving data. A higher resolution of the RCMs did not improve the representation of atmospheric blocking. However, all RCMs are able to reproduce the basic anomaly structure of TAS and PR connected to blocking. Moreover, the associated anomalies do not change substantially after correcting for the misrepresentation of blocking in RCMs. The overall model bias is mainly determined by pattern biases in the representations of surface parameters during non-blocking situations. Biases in blocking detections tend to have a secondary influence in the overall bias due to compensatory effects of missed blockings and non-blockings. However, they can lead to measurable effects in the presence of a strong blocking underestimation. © 2018, The Author(s).
英文关键词	Atmospheric blocking; EURO-CORDEX; Precipitation bias; Reanalysis driven; Regional climate models; Temperature bias
语种	英语
scopus关键词	atmospheric blocking; climate modeling; ensemble forecasting; general circulation model; precipitation assessment; regional climate; weather forecasting; Atlantic islands; 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/146441
作者单位	Wegener Center for Climate and Global Change, University of Graz, Brandhofgasse 5, Graz, 8010, Austria; Meteorology Group, Department of Applied Mathematics and Computer Sciences, Universidad de Cantabria, Santander, 39005, Spain; Meteorology Group, Institute of Physics of Cantabria, (CSIC-)Universidad de Cantabria, Santander, 39005, Spain; Departamento de Física de la Tierra y Astrofísica, Universidad Complutense de Madrid (UCM), Madrid, 28040, Spain; Instituto de Geociencias (IGEO), CSIC-UCM, Madrid, 28040, Spain
推荐引用方式 GB/T 7714	Jury M.W.,Herrera S.,Gutiérrez J.M.,et al. Blocking representation in the ERA-Interim driven EURO-CORDEX RCMs[J],2019,52(2020-05-06).
APA	Jury M.W.,Herrera S.,Gutiérrez J.M.,&Barriopedro D..(2019).Blocking representation in the ERA-Interim driven EURO-CORDEX RCMs.Climate Dynamics,52(2020-05-06).
MLA	Jury M.W.,et al."Blocking representation in the ERA-Interim driven EURO-CORDEX RCMs".Climate Dynamics 52.2020-05-06(2019).