气候变化领域集成服务门户(CCPortal): Improvement of the simulated southern hemisphere stratospheric polar vortex across series of CMIPs

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DOI	10.1007/s00382-024-07250-x
	Improvement of the simulated southern hemisphere stratospheric polar vortex across series of CMIPs
	Feng, Kexiang; Rao, Jian; Chen, Haohan; Ren, Rongcai; Guo, Dong
发表日期	2024
ISSN	0930-7575
EISSN	1432-0894
英文摘要	Modeling of the Antarctic stratospheric polar vortex from the Coupled Model Intercomparison Project phase 3 (CMIP3) to phase 6 (CMIP6) is evaluated in this study. On average, a wide coverage of warm biases appears in the Antarctic stratosphere, which is greatest in the early CMIP and is gradually diminished in the two later CMIPs with the number of models reproducing QBO increasing (0, 5, and 19). Four metrics of the Antarctic stratospheric polar vortex are assessed for three generations of CMIPs. Biases such as the overly weak strength, the overly large aspect ratio and the westward drifted vortex centroid are commonly shared across the CMIPs. While with improvements of the model resolution, model top, interactive chemistry and physical process, the intermodel spread narrows generation by generation, especially for high-top models than low-top models in the simulation of vortex area. Further, intermodel spread of Antarctic stratospheric vortex is obviously associated with the bias of austral winter sea surface temperature (SST). Specifically, as cold SST bias in the southern tropical Pacific Ocean and warm SST bias in the Southern Hemisphere Ni & ntilde;o 1 + 2 region (Nino) improve, biases in the modelled vortex metrics also decrease, which can be partly attributed to the modifying of the upward propagations of planetary waves over tropical and extratropical oceans. The strengthened relationships in the focused regions further confirms the importance of the SST simulation for the stratosphere vortex simulation. In general, despite biases of the polar vortex existing across CMIPs, marked progresses have been achieved for most models.
英文关键词	Stratospheric circulation; Stratosphere-troposphere coupling; Model comparison; Sea-atmosphere interaction
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001221401600001
来源期刊	CLIMATE DYNAMICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300734
作者单位	Nanjing University of Information Science & Technology; Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS
推荐引用方式 GB/T 7714	Feng, Kexiang,Rao, Jian,Chen, Haohan,et al. Improvement of the simulated southern hemisphere stratospheric polar vortex across series of CMIPs[J],2024.
APA	Feng, Kexiang,Rao, Jian,Chen, Haohan,Ren, Rongcai,&Guo, Dong.(2024).Improvement of the simulated southern hemisphere stratospheric polar vortex across series of CMIPs.CLIMATE DYNAMICS.
MLA	Feng, Kexiang,et al."Improvement of the simulated southern hemisphere stratospheric polar vortex across series of CMIPs".CLIMATE DYNAMICS (2024).