气候变化领域集成服务门户(CCPortal): Representation of Southern Ocean Properties across Coupled Model Intercomparison Project Generations: CMIP3 to CMIP6

CCPortal

DOI	10.1175/JCLI-D-19-0970.1
	Representation of Southern Ocean Properties across Coupled Model Intercomparison Project Generations: CMIP3 to CMIP6
	Beadling R.L.; Russell J.L.; Stouffer R.J.; Mazloff M.; Talley L.D.; Goodman P.J.; Salleé J.B.; Hewitt H.T.; Hyder P.; Pandde A.
发表日期	2020
ISSN	0894-8755
起始页码	6555
结束页码	6581
卷号	33 期号:15
英文摘要	The air-sea exchange of heat and carbon in the Southern Ocean (SO) plays an important role in mediating the climate state. The dominant role the SO plays in storing anthropogenic heat and carbon is a direct consequence of the unique and complex ocean circulation that exists there. Previous generations of climate models have struggled to accurately represent key SO properties and processes that influence the large-scale ocean circulation. This has resulted in low confidence ascribed to twenty-first-century projections of the state of the SO from previous generations of models. This analysis provides a detailed assessment of the ability of models contributed to the sixth phase of the Coupled Model Intercomparison Project (CMIP6) to represent important observationally based SO properties. Additionally, a comprehensive overview of CMIP6 performance relative to CMIP3 and CMIP5 is presented. CMIP6 models show improved performance in the surface wind stress forcing, simulating stronger and less equatorward-biased wind fields, translating into an improved representation of the Ekman upwelling over the Drake Passage latitudes. An increased number of models simulate an Antarctic Circumpolar Current (ACC) transport within observational uncertainty relative to previous generations; however, several models exhibit extremely weak transports. Generally, the upper SO remains biased warm and fresh relative to observations, and Antarctic sea ice extent remains poorly represented. While generational improvement is found in many metrics, persistent systematic biases are highlighted that should be a priority during model development. These biases need to be considered when interpreting projected trends or biogeochemical properties in this region. © 2020 American Meteorological Society. All rights reserved.
英文关键词	Biogeochemistry; Carbon; Ocean currents; Sea ice; Antarctic circumpolar current; Antarctic sea ice; Anthropogenic heat; Biogeochemical property; Coupled Model Intercomparison Project; Large-scale ocean circulations; Model development; Surface wind stress; Climate models; air-sea interaction; climate modeling; CMIP; Ekman pumping; heat transfer; oceanic circulation; sea ice; wind field; wind stress; Antarctic Circumpolar Current; Southern Ocean
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171195
作者单位	Department of Geosciences, University of Arizona, Tucson, AZ, United States; Scripps Institution of Oceanography, University of California, San Diego, CA, United States; Sorbonne Universita, Upmc University, Umr 7159, LOCEAN-IPSL, Paris 06, Paris, France; Met Office Hadley Centre, Exeter, United Kingdom
推荐引用方式 GB/T 7714	Beadling R.L.,Russell J.L.,Stouffer R.J.,et al. Representation of Southern Ocean Properties across Coupled Model Intercomparison Project Generations: CMIP3 to CMIP6[J],2020,33(15).
APA	Beadling R.L..,Russell J.L..,Stouffer R.J..,Mazloff M..,Talley L.D..,...&Pandde A..(2020).Representation of Southern Ocean Properties across Coupled Model Intercomparison Project Generations: CMIP3 to CMIP6.Journal of Climate,33(15).
MLA	Beadling R.L.,et al."Representation of Southern Ocean Properties across Coupled Model Intercomparison Project Generations: CMIP3 to CMIP6".Journal of Climate 33.15(2020).