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DOI | 10.1175/JCLI-D-19-0263.1 |
Assessing the Quality of Southern Ocean Circulation in CMIP5 AOGCM and Earth System Model Simulations | |
Beadling, R. L.1; Russell, J. L.1; Stouffer, R. J.1; Goodman, P. J.1; Mazloff, M.2 | |
2019-09-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:18页码:5915-5940 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The Southern Ocean (SO) is vital to Earth's climate system due to its dominant role in exchanging carbon and heat between the ocean and atmosphere and transforming water masses. Evaluating the ability of fully coupled climate models to accurately simulate SO circulation and properties is crucial for building confidence in model projections and advancing model fidelity. By analyzing multiple biases collectively across large model ensembles, physical mechanisms governing the diverse mean-state SO circulation found across models can be identified. This analysis 1) assesses the ability of a large ensemble of models contributed to phase 5 of the Coupled Model Intercomparison Project (CMIP5) to simulate observationally based metrics associated with an accurate representation of the Antarctic Circumpolar Current (ACC), and 2) presents a framework by which the quality of the simulation can be categorized and mechanisms governing the resulting circulation can be deduced. Different combinations of biases in critical metrics including the magnitude and position of the zonally averaged westerly wind stress maximum, wind-driven surface divergence, surface buoyancy fluxes, and properties and transport of North Atlantic Deep Water entering the SO produce distinct mean-state ACC transports. Relative to CMIP3, the quality of the CMIP5 SO simulations has improved. Eight of the thirty-one models simulate an ACC within observational uncertainty (2 sigma) for approximately the right reasons; that is, the models achieve accuracy in the surface wind stress forcing and the representation of the difference in the meridional density across the current. Improved observations allow for a better assessment of the SO circulation and its properties. |
英文关键词 | Ocean circulation Climate models Coupled models General circulation models Model comparison Model evaluation performance |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000481476900002 |
WOS关键词 | ANTARCTIC CIRCUMPOLAR CURRENT ; GLOBAL OVERTURNING CIRCULATION ; HISTORICAL BIAS ; SEA-ICE ; TRANSPORT ; DEEP ; CONFIGURATION ; SENSITIVITY ; ATLANTIC ; PACIFIC |
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/186777 |
专题 | 气候变化 |
作者单位 | 1.Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA; 2.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA |
推荐引用方式 GB/T 7714 | Beadling, R. L.,Russell, J. L.,Stouffer, R. J.,et al. Assessing the Quality of Southern Ocean Circulation in CMIP5 AOGCM and Earth System Model Simulations[J]. JOURNAL OF CLIMATE,2019,32(18):5915-5940. |
APA | Beadling, R. L.,Russell, J. L.,Stouffer, R. J.,Goodman, P. J.,&Mazloff, M..(2019).Assessing the Quality of Southern Ocean Circulation in CMIP5 AOGCM and Earth System Model Simulations.JOURNAL OF CLIMATE,32(18),5915-5940. |
MLA | Beadling, R. L.,et al."Assessing the Quality of Southern Ocean Circulation in CMIP5 AOGCM and Earth System Model Simulations".JOURNAL OF CLIMATE 32.18(2019):5915-5940. |
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