气候变化领域集成服务门户(CCPortal): Assessment of CORDEX simulations over South America: added value on seasonal climatology and resolution considerations

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DOI	10.1007/s00382-018-4412-z
	Assessment of CORDEX simulations over South America: added value on seasonal climatology and resolution considerations
	Falco M.; Carril A.F.; Menéndez C.G.; Zaninelli P.G.; Li L.Z.X.
发表日期	2019
ISSN	0930-7575
起始页码	4771
结束页码	4786
卷号	52 期号:2020-07-08
英文摘要	A new set of CORDEX simulations over South America, together with their coarser-resolution driving Global Climate Models (GCMs) are used to investigate added value of Regional Climate Models (RCMs) in reproducing mean climate conditions over the continent. There are two types of simulations with different lateral boundary conditions: five hindcast simulations use re-analysis as boundary conditions, and five other historical simulations use GCMs outputs. Multi-model ensemble means and individual simulations are evaluated against two or three observation-based gridded datasets for 2-m surface air temperature and total precipitation. The analysis is performed for summer and winter, over a common period from 1990 to 2004. Results indicate that added value of RCMs is dependent on driving fields, surface properties of the area, season and variable considered. A robust added value for RCMs driven by ERA-Interim is obtained in reproducing the summer climatology of surface air temperature over tropical and subtropical latitudes. Mixed results can be seen, however, for summer precipitation climatology in both hindcast and historical experiments. For winter, there is no noticeable improvement by the RCMs for the large-scale precipitation and surface air temperature climatology. To further understand the added value of RCMs, models deviations from observation are decomposed according to different terms that reflect the observational uncertainty, the representativeness error, the interpolation error, and the actual performance of the model. Regions where these errors are not negligible, such as in complex terrain regions, among others, can be identified. There is a clear need for complementary assessment to understand better the real value added by RCMs. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Added value; CORDEX; Model assessment; Seasonal climatology; South America
语种	英语
scopus关键词	air temperature; climate conditions; climate modeling; climatology; computer simulation; ensemble forecasting; global climate; hindcasting; model validation; precipitation assessment; regional climate; seasonal variation; South America
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/146388
作者单位	Centro de Investigaciones del Mar y la Atmósfera (CIMA), CONICET-UBA, Ciudad Universitaria, Ciudad Autónoma de Buenos Aires, Int. Guiraldes 2160, Pabellón 2, Piso 2, Buenos Aires, C1428E GA, Argentina; Instituto Franco-Argentino sobre Estudios de Clima y sus Impactos (UMI3351-IFAECI/CNRS-CONICET-UBA), Buenos Aires, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina; Laboratoire de Météorologie Dynamique (LMD), CNRS, Sorbonne Université, École Normale Supérieure, École Polytechnique, Paris, France; Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
推荐引用方式 GB/T 7714	Falco M.,Carril A.F.,Menéndez C.G.,et al. Assessment of CORDEX simulations over South America: added value on seasonal climatology and resolution considerations[J],2019,52(2020-07-08).
APA	Falco M.,Carril A.F.,Menéndez C.G.,Zaninelli P.G.,&Li L.Z.X..(2019).Assessment of CORDEX simulations over South America: added value on seasonal climatology and resolution considerations.Climate Dynamics,52(2020-07-08).
MLA	Falco M.,et al."Assessment of CORDEX simulations over South America: added value on seasonal climatology and resolution considerations".Climate Dynamics 52.2020-07-08(2019).