globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00382-017-3928-y
Scopus记录号: 2-s2.0-85030100882
论文题名:
Simulation of temperature extremes in the Tibetan Plateau from CMIP5 models and comparison with gridded observations
作者: You Q.; Jiang Z.; Wang D.; Pepin N.; Kang S.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期:2018-01-02
起始页码: 355
结束页码: 369
语种: 英语
英文关键词: CMIP5 ; Observation ; Temperature extreme ; Tibetan Plateau
Scopus关键词: climate change ; cloud cover ; CMIP ; computer simulation ; longwave radiation ; temperature anomaly ; China ; Qinghai-Xizang Plateau
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 0.5° 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 (Tmin) is significanlty positive correlations with the longwave radiation and cloud variables, respectively, but the Tmax fails to find the correlation with the shortwave radiation and cloud variables. This suggests that the cloud–radiation differences influence the Tmin in each CMIP5 model to some extent, and result in the temperature extremes based on Tmin. © 2017, Springer-Verlag GmbH Germany.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109218
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environmental Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science and Technology (NUIST), Nanjing, 210044, China; Department of Geography, University of Portsmouth, Portsmouth, PO1 3HE, United Kingdom; State Key Laboratory of Cryospheric Science, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, 730000, China

Recommended Citation:
You Q.,Jiang Z.,Wang D.,et al. Simulation of temperature extremes in the Tibetan Plateau from CMIP5 models and comparison with gridded observations[J]. Climate Dynamics,2018-01-01,51(2018-01-02)
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