气候变化领域集成服务门户(CCPortal): Comparison of spatial and temporal performance of two Regional Climate Models in the Amazon and La Plata river basins

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DOI	10.1016/j.atmosres.2020.105413
	Comparison of spatial and temporal performance of two Regional Climate Models in the Amazon and La Plata river basins
	Builes-Jaramillo A.; Pántano V.
发表日期	2021
ISSN	0169-8095
卷号	250
英文摘要	This study aims to present a comprehensive spatio-temporal performance analysis of two water balance variables, precipitation and evapotranspiration, simulated by two Regional Climate Models (RCM) multi-model ensembles. We evaluate simulations from two RCMs from the Coordinated Regional Climate Downscaling Experiment in the two largest hydrological basins in South America, the Amazon River basin and La Plata River basin. Information was analyzed at 0.5°x0.5° resolution, compared with their driving Global Climate Models (GCM) from the Coupled Models Intercomparison Project (CMIP5) and reference datasets from observations and reanalysis for the period 1986–2005. Spatial and temporal model performance metrics were calculated for monthly datasets, at the annual scale. Annual cycles and the spatial distribution of mean fields are well represented by the RCMs, whereas the empirical frequency distributions reveal discrepancies in lower frequencies. In terms of spatial performance of the RCMs, the quantitative metrics showed that mean fields are better simulated by RCA4 and only RegCM4 offers added value with respect to GCM. Statistical metrics for temporal variability assessment presented a better performance over the La Plata basin from both RCMs. Over the Amazon basin, temporal variability of precipitation is better represented by RegCM4, and the opposite occurs for evapotranspiration with lower differences. According to the overall assessment of spatio-temporal results and performance metrics, the RegCM4 ensemble shows a better performance even though the number of members is smaller. © 2020 Elsevier B.V.
英文关键词	Added value; Amazon River basin; CORDEX; La Plata River basin; Model performance
语种	英语
scopus关键词	Evapotranspiration; Rivers; Watersheds; Frequency distributions; Global climate model; Multi-model ensemble; Quantitative metrics; Regional climate models; Spatial and temporal modeling; Temporal performance; Temporal variability; Climate models; annual variation; climate modeling; comparative study; evapotranspiration; precipitation (climatology); regional climate; spatiotemporal analysis; water budget; Amazon Basin
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162018
作者单位	Institución Universitaria Colegio Mayor de Antioquia, Facultad de Arquitectura e Ingeniería, Carrera 78 N° 65 – 46, Medellín, 050034, Colombia; Departamento de Ciencias de la Atmósfera y los Océanos, Universidad de Buenos Aires, Intendente Güiraldes 2160, Pabellón 2, 2 floor, Ciudad Universitaria, Buenos Aires, C1428EGA, Argentina; Consejo Nacional de Investigaciones Científica y Técnicas, Godoy Cruz 2290, Buenos Aires, C1425FQB, Argentina
推荐引用方式 GB/T 7714	Builes-Jaramillo A.,Pántano V.. Comparison of spatial and temporal performance of two Regional Climate Models in the Amazon and La Plata river basins[J],2021,250.
APA	Builes-Jaramillo A.,&Pántano V..(2021).Comparison of spatial and temporal performance of two Regional Climate Models in the Amazon and La Plata river basins.Atmospheric Research,250.
MLA	Builes-Jaramillo A.,et al."Comparison of spatial and temporal performance of two Regional Climate Models in the Amazon and La Plata river basins".Atmospheric Research 250(2021).