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Seasonality of Four Types of Baroclinic Instability in the Global Oceans

文献类型：期刊论文

作者Feng, Ling1,4; Liu, Chuanyu1,2,4,5; Koehl, Armin3; Wang, Fan1,2,4,5
刊名JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
出版日期2022-05-01
卷号127期号:5页码:20
关键词seasonal variability baroclinic instability types baroclinic energy conversion rate mesoscale eddies
ISSN号2169-9275
DOI10.1029/2022JC018572
通讯作者Liu, Chuanyu(chuanyu.liu@qdio.ac.cn) ; Wang, Fan(fwang@qdio.ac.cn)
英文摘要Distinct geographical distributions of four types of mesoscale baroclinic instabilities (BCIs) exist in the global oceans, implying preferences of surface or subsurface mesoscale eddies to specific regions. This study explores seasonal variations of global BCI types and their dependence on varying background ocean states with a focus on three representative regions. First, the regions of the Kuroshio Extension and Gulf Stream are representative for distinctive seasonal transition of BCI types: the Charney surface BCIs prevail in winter, while the Phillips BCIs prevail in summer, which is controlled by weak (strong) upper-layer stratification in winter (summer) but is less impacted by the seasonal changes in the mean flow-induced shear. Second, the region covering both the tropics and subtropics of the North Pacific (10 degrees N-35 degrees N) is representative for seasonal meridional migration of the border between the domains of the Phillips and the Charney surface BCIs; their border migrates equatorward (poleward) in spring and summer (autumn and winter), which is primarily caused by the equatorward (poleward) shift of both the North Equatorial Current and the Subtropical Countercurrent in spring and summer (autumn and winter), and is secondarily modulated by the variation in the upper-layer stratification. Third, the Antarctic Circumpolar Current region is chosen to represent a weak seasonal variation of BCIs. Those seasonal variations in BCI types are further demonstrated as being associated with seasonal variations of baroclinic conversion rate, implying possible generation of corresponding eddies.
资助项目Strategic Priority Research Program, CAS[XDA22050203] ; National Natural Science Foundation of China (NSFC)[41976012] ; National Natural Science Foundation of China (NSFC)[41606026] ; National Natural Science Foundation of China (NSFC)[41730534] ; National Natural Science Foundation of China (NSFC)[Y72143101B]
WOS研究方向Oceanography
语种英语
WOS记录号WOS:000802794700001
出版者AMER GEOPHYSICAL UNION
源URL[http://ir.qdio.ac.cn/handle/337002/179368]  
专题海洋研究所_海洋环流与波动重点实验室
通讯作者Liu, Chuanyu; Wang, Fan
作者单位1.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol Qingdao QNLM, Marine Dynam Proc & Climate Funct Lab, Qingdao, Peoples R China
3.Univ Hamburg, Inst Oceanog IFM, Ctr Earth Syst Res & Sustainabil CEN, Hamburg, Germany
4.Chinese Acad Sci IOCAS, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
5.Univ Chinese Acad Sci UCAS, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Feng, Ling,Liu, Chuanyu,Koehl, Armin,et al. Seasonality of Four Types of Baroclinic Instability in the Global Oceans[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2022,127(5):20.
APA Feng, Ling,Liu, Chuanyu,Koehl, Armin,&Wang, Fan.(2022).Seasonality of Four Types of Baroclinic Instability in the Global Oceans.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,127(5),20.
MLA Feng, Ling,et al."Seasonality of Four Types of Baroclinic Instability in the Global Oceans".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 127.5(2022):20.

入库方式： OAI收割

来源：海洋研究所

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