Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.4837 |
Assessing the uncertainty of CESM-LE in simulating the trends of mean and extreme temperature and precipitation over China | |
Li, Juan1,2,3; Zhu, Zhiwei1,2,3; Dong, Wenjie4 | |
2017-03-30 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Climate change affects mean and extreme temperature and precipitation, increasing the risk of related disasters. Assessing the performance of current models in simulating these aspects is therefore crucial to future projection and policymaking. Based on a large ensemble (LE; 30 members) of the Community Earth System Model (CESM-LE), this study seeks to answer the following two questions: (1) Are the simulated trends of mean and extreme temperature and precipitation over China consistent with observations? (2) What is the range of model uncertainty due to internal variability? The results show that CESM-LE can capture the trends of observed annul mean temperature and extremely low temperature days (ELD) over 16-26% of China, but has difficulty in reproducing the observed trends in extremely high temperature days (EHD). For precipitation, CESM-LE demonstrates similar capability in reproducing the observed trends in annual mean precipitation and extreme precipitation days (EPD). For consecutive dry days (CDD), the decreasing trends over part of northwestern China can be captured, but the increasing trends over northern China cannot be reproduced by CESM-LE. Regarding the uncertainty of the model resulting from natural internal variability, because all 30 ensemble members of CESM use the same model and external forcing, CESM-LE's spread (uncertainty) is mainly due to internal variability. Larger uncertainty in simulated trends is found over northern China and the Tibetan Plateau for annual mean temperature, over northeastern China and the Huang-Huai region for ELD, and over the Tibetan Plateau for EHD. The trends in annual mean precipitation show uniform uncertainty over nearly all of China, except for the northwest. Larger uncertainty trends appear over southern and northwestern China for EPD, and over the Tibetan Plateau and northern China for CDD. |
英文关键词 | climate mean and extreme CESM model uncertainty internal variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397497700031 |
WOS关键词 | SURFACE AIR-TEMPERATURE ; CLIMATE EXTREMES ; EAST-ASIA ; MODELS ; IMPACTS ; SUMMER ; GLOBE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/37131 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Joint Int Res Lab Climate & Environm Change ILCEC, Key Lab Meteorol Disaster,Minist Educ KLME, Nanjing, Jiangsu, Peoples R China; 2.Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA; 3.Univ Hawaii Manoa, Dept Atmospher Sci, Honolulu, HI 96822 USA; 4.Sun Yat Sen Univ, Sch Atmospher Sci, Guangzhou, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Juan,Zhu, Zhiwei,Dong, Wenjie. Assessing the uncertainty of CESM-LE in simulating the trends of mean and extreme temperature and precipitation over China[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(4). |
APA | Li, Juan,Zhu, Zhiwei,&Dong, Wenjie.(2017).Assessing the uncertainty of CESM-LE in simulating the trends of mean and extreme temperature and precipitation over China.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(4). |
MLA | Li, Juan,et al."Assessing the uncertainty of CESM-LE in simulating the trends of mean and extreme temperature and precipitation over China".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.4(2017). |
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