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DOI	10.1007/s00382-017-3928-y
	Simulation of temperature extremes in the Tibetan Plateau from CMIP5 models and comparison with gridded observations
	You, Qinglong; Jiang, Zhihong; Wang, Dai; Pepin, Nick; Kang, Shichang
发表日期	2018
ISSN	0930-7575
EISSN	1432-0894
卷号	51 期号:2019-01-02
英文摘要	Understanding changes in temperature extremes in a warmer climate is of great importance for society and for ecosystem functioning due to potentially severe impacts of such extreme events. In this study, temperature extremes defined by the Expert Team on Climate Change Detection and Indices (ETCCDI) from CMIP5 models are evaluated by comparison with homogenized gridded observations at 0.5A degrees resolution across the Tibetan Plateau (TP) for 1961-2005. Using statistical metrics, the models have been ranked in terms of their ability to reproduce similar patterns in extreme events to the observations. Four CMIP5 models have good performance (BNU-ESM, HadGEM2-ES, CCSM4, CanESM2) and are used to create an optimal model ensemble (OME). Most temperature extreme indices in the OME are closer to the observations than in an ensemble using all models. Best performance is given for threshold temperature indices and extreme/absolute value indices are slightly less well modelled. Thus the choice of model in the OME seems to have more influences on temperature extreme indices based on thresholds. There is no significant correlation between elevation and modelled bias of the extreme indices for both the optimal/all model ensembles. Furthermore, the minimum temperature (T-min) is significanlty positive correlations with the longwave radiation and cloud variables, respectively, but the T-max fails to find the correlation with the shortwave radiation and cloud variables. This suggests that the cloud-radiation differences influence the T-min in each CMIP5 model to some extent, and result in the temperature extremes based on T-min.
关键词	Tibetan Plateau Temperature extreme CMIP5 Observation
学科领域	Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
来源期刊	CLIMATE DYNAMICS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111957
作者单位	NUIST, Joint Int Res Lab Climate & Environm Change ILCEC, Key Lab Meteorol Disaster, Minist Educ KLME,CIC FEMD, Nanjing 210044, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	You, Qinglong,Jiang, Zhihong,Wang, Dai,et al. Simulation of temperature extremes in the Tibetan Plateau from CMIP5 models and comparison with gridded observations[J]. 中国科学院西北生态环境资源研究院,2018,51(2019-01-02).
APA	You, Qinglong,Jiang, Zhihong,Wang, Dai,Pepin, Nick,&Kang, Shichang.(2018).Simulation of temperature extremes in the Tibetan Plateau from CMIP5 models and comparison with gridded observations.CLIMATE DYNAMICS,51(2019-01-02).
MLA	You, Qinglong,et al."Simulation of temperature extremes in the Tibetan Plateau from CMIP5 models and comparison with gridded observations".CLIMATE DYNAMICS 51.2019-01-02(2018).