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DOI | 10.1175/JCLI-D-16-0578.1 |
Attribution of Forced Decadal Climate Change in Coupled and Uncoupled Ocean-Atmosphere Model Experiments | |
Dong, Buwen; Sutton, Rowan T.; Shaffrey, Len; Klingaman, Nicholas P. | |
2017-08-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:16 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | There is still no consensus about the best methodology for attributing observed changes in climate or climate events. One widely used approach relies on experiments in which the time periods of interest are simulated using an atmospheric general circulation model (AGCM) forced by prescribed sea surface temperatures (SSTs), with and without estimated anthropogenic influences. A potential limitation of such experiments is the lack of explicit atmosphere-ocean coupling; therefore a key question is whether the attribution statements derived from such studies are in fact robust. In this research the authors have carried out climate model experiments to test attribution conclusions in a situation where the answer is known-a so-called perfect model approach. The study involves comparing attribution conclusions for decadal changes derived from experiments with a coupled climate model (specifically an AGCM coupled to an ocean mixed-layer model) with conclusions derived from parallel experiments with the same AGCM forced by SSTs derived from the coupled model simulations. Results indicate that attribution conclusions for surface air temperature changes derived from AGCM experiments are generally robust and not sensitive to air-sea coupling. However, changes in seasonal mean and extreme precipitations, and circulation in some regions, show large sensitivity to air-sea coupling, notably in the summer monsoons over East Asia and Australia. Comparison with observed changes indicates that the coupled simulations generally agree better with observations. These results demonstrate that the AGCM-based attribution method has limitations and may lead to erroneous attribution conclusions in some regions for local circulation and mean and extreme precipitation. The coupled mixed-layer model used in this study offers an alternative and, in some respects, superior tool for attribution studies. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406040200009 |
WOS关键词 | ASIAN SUMMER MONSOON ; AIR-SEA INTERACTION ; NORTHEAST ASIA ; TEMPERATURE ; HEAT ; PRECIPITATION ; VARIABILITY ; AUSTRALIA ; CIRCULATION ; PREDICTION |
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/20737 |
专题 | 气候变化 |
作者单位 | Univ Reading, Natl Ctr Atmospher Sci, Dept Meteorol, Reading, Berks, England |
推荐引用方式 GB/T 7714 | Dong, Buwen,Sutton, Rowan T.,Shaffrey, Len,et al. Attribution of Forced Decadal Climate Change in Coupled and Uncoupled Ocean-Atmosphere Model Experiments[J]. JOURNAL OF CLIMATE,2017,30(16). |
APA | Dong, Buwen,Sutton, Rowan T.,Shaffrey, Len,&Klingaman, Nicholas P..(2017).Attribution of Forced Decadal Climate Change in Coupled and Uncoupled Ocean-Atmosphere Model Experiments.JOURNAL OF CLIMATE,30(16). |
MLA | Dong, Buwen,et al."Attribution of Forced Decadal Climate Change in Coupled and Uncoupled Ocean-Atmosphere Model Experiments".JOURNAL OF CLIMATE 30.16(2017). |
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