气候变化领域集成服务门户(CCPortal): Multiscale precipitation variability over South America: Analysis of the added value of CORDEX RCM simulations

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DOI	10.1007/s00382-019-04689-1
	Multiscale precipitation variability over South America: Analysis of the added value of CORDEX RCM simulations
	Solman S.A.; Blázquez J.
发表日期	2019
ISSN	0930-7575
起始页码	1547
结束页码	1565
卷号	53 期号:2020-03-04
英文摘要	This study is aimed to assess the added value of Regional Climate Models (RCMs) with respect to their driving Global Climate Models (GCMs) focused on the behavior of precipitation over South America (SA) at different temporal scales. RCMs from the CORDEX experiments available for the South American domain at 0.44° resolution were used together with their driving GCMs from the Coupled Models Intercomparison Project (CMIP5) dataset for the period 1979–2005. Observed data from the CPC-Global Unified Gauge-Based Analysis of Daily Precipitation was used to evaluate the simulations. Precipitation data were first filtered to retain the variability at the interannual, intraseasonal and synoptic timescales. Statistics of the daily precipitation data were also evaluated, including percentiles of light, moderate, heavy and extreme precipitation events. The added value was quantified in terms of two metrics accounting for the spatial distribution of the particular precipitation feature and the M-skill score, representing a measure of normalized square errors. Added value is strongly dependent on the RCM-GCM pair evaluated. RCMs with an overall good performance add value over their driving GCM for all metrics analyzed, from the climatological seasonal mean to the intensity of extreme events. The added value arises more clearly as long as the smaller the scale of the precipitation feature assessed is. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Added value; Precipitation; Regional climate modeling; South America; Temporal scale
语种	英语
scopus关键词	annual variation; climate modeling; CMIP; computer simulation; global climate; 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/146143
作者单位	Departamento de Ciencias de la Atmósfera y los Océanos DCAO-FCEN-UBA, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, 1428, Argentina; Centro de Investigaciones del Mar y la Atmósfera CIMA/CONICET-UBA, CONICET-Universidad de Buenos Aires, Buenos Aires, 1428, Argentina; Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, La Plata, Argentina
推荐引用方式 GB/T 7714	Solman S.A.,Blázquez J.. Multiscale precipitation variability over South America: Analysis of the added value of CORDEX RCM simulations[J],2019,53(2020-03-04).
APA	Solman S.A.,&Blázquez J..(2019).Multiscale precipitation variability over South America: Analysis of the added value of CORDEX RCM simulations.Climate Dynamics,53(2020-03-04).
MLA	Solman S.A.,et al."Multiscale precipitation variability over South America: Analysis of the added value of CORDEX RCM simulations".Climate Dynamics 53.2020-03-04(2019).