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DOI | 10.1029/2018GL079220 |
Assessing the Dynamic Versus Thermodynamic Origin of Climate Model Biases | |
Wehrli, Kathrin1; Guillod, Benoit P.1,2; Hauser, Mathias1; Leclair, Matthieu1; Seneviratne, Sonia I.1 | |
2018-08-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:16页码:8471-8479 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland |
英文摘要 | Global climate models present systematic biases, among others, a tendency to overestimate hot and dry summers in midlatitude regions. Here we investigate the origin of such biases in the Community Earth System Model. To disentangle the contribution of dynamics and thermodynamics, we perform simulations that include nudging of horizontal wind and compare them to simulations with a free atmosphere. Prescribing the observed large-scale circulation improves the modeled weather patterns as well as many related fields. However, the larger part of the temperature and precipitation biases of the free atmosphere configuration remains after nudging, in particular, for extremes. Our results suggest that thermodynamical processes, including land-atmosphere coupling and atmospheric parameterizations, drive the errors present in Community Earth System Model. Our result may apply to other climate models and highlight the importance of distinguishing thermodynamic and dynamic sources of biases in present-day global climate models. |
英文关键词 | climate model biases Earth system models atmospheric nudging dynamics versus thermodynamics global climate models systematic biases |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445612500066 |
WOS关键词 | TECHNICAL NOTE ; TEMPERATURE ; CMIP5 ; SUMMER ; SIMULATIONS ; UNCERTAINTY ; CIRCULATION ; PERFORMANCE ; CONVECTION ; EXTREMES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/28028 |
专题 | 气候变化 |
作者单位 | 1.Swiss Fed Inst Technol, Inst Atmospher & Climate Sci, Dept Environm Syst Sci, Zurich, Switzerland; 2.Swiss Fed Inst Technol, Inst Environm Decis, Dept Environm Syst Sci, Zurich, Switzerland |
推荐引用方式 GB/T 7714 | Wehrli, Kathrin,Guillod, Benoit P.,Hauser, Mathias,et al. Assessing the Dynamic Versus Thermodynamic Origin of Climate Model Biases[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(16):8471-8479. |
APA | Wehrli, Kathrin,Guillod, Benoit P.,Hauser, Mathias,Leclair, Matthieu,&Seneviratne, Sonia I..(2018).Assessing the Dynamic Versus Thermodynamic Origin of Climate Model Biases.GEOPHYSICAL RESEARCH LETTERS,45(16),8471-8479. |
MLA | Wehrli, Kathrin,et al."Assessing the Dynamic Versus Thermodynamic Origin of Climate Model Biases".GEOPHYSICAL RESEARCH LETTERS 45.16(2018):8471-8479. |
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