气候变化领域集成服务门户(CCPortal): Decomposing Temperature Extremes Errors in CMIP5 and CMIP6 Models

CCPortal

DOI	10.1029/2020GL088031
	Decomposing Temperature Extremes Errors in CMIP5 and CMIP6 Models
	Di Luca A.; Pitman A.J.; de Elía R.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	We quantify the skill of Coupled Model Intercomparison Project Phase 5 (CMIP5) and CMIP6 models to represent daily temperature extremes. We find CMIP models systematically exaggerate the magnitude of daily temperature anomalies for both cold and hot extremes. We assess the contribution to a daily temperature extreme from four terms: the long-term mean annual cycle, the diurnal cycle, synoptic variability, and seasonal variability for both cold and hot extremes. These four terms are combined, and the overall performance of individual climate models assessed. This identifies those models that can simulate temperature extremes well and simulate them well for the right reasons. The new error metric shows that increases in horizontal resolution usually lead to a better performance particularly for the coarser resolution models. The CMIP6 improvements relative to CMIP5 are systematic across most land regions and are only partially explained by the increase in horizontal resolution, and other differences must therefore help explain the higher CMIP6 skill. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Earth sciences; Geophysics; Coarser resolution model; Coupled Model Intercomparison Project; Daily temperatures; Error metrices; Horizontal resolution; Seasonal variability; Synoptic variability; Temperature extremes; Climate models; climate modeling; CMIP; extreme event; seasonal variation; temperature anomaly; temperature effect
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170136
作者单位	Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia; ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, NSW, Australia; Servicio Meteorológico Nacional, Buenos Aires, Argentina
推荐引用方式 GB/T 7714	Di Luca A.,Pitman A.J.,de Elía R.. Decomposing Temperature Extremes Errors in CMIP5 and CMIP6 Models[J],2020,47(14).
APA	Di Luca A.,Pitman A.J.,&de Elía R..(2020).Decomposing Temperature Extremes Errors in CMIP5 and CMIP6 Models.Geophysical Research Letters,47(14).
MLA	Di Luca A.,et al."Decomposing Temperature Extremes Errors in CMIP5 and CMIP6 Models".Geophysical Research Letters 47.14(2020).