Vertical Structure of the Upper-Indian Ocean Thermal Variability

doi:10.1175/JCLI-D-19-0851.1

IOCAS-IR > 海洋环流与波动重点实验室

	Vertical Structure of the Upper-Indian Ocean Thermal Variability
	Li, Yuanlong 1,2,3; Han, Weiqing 4,5; Wang, Fan1,2,3 ; Zhang, Lei 4,5; Duan, Jing 1,2,3
	2020-09-01
发表期刊	JOURNAL OF CLIMATE
ISSN	0894-8755
卷号	33 期号:17 页码:7233-7253
通讯作者	Li, Yuanlong(liyuanlong@qdio.ac.cn)
摘要	Multi-time-scale variabilities of the Indian Ocean (IO) temperature over 0-700m are revisited from the perspective of vertical structure. Analysis of historical data for 1955-2018 identifies two dominant types of vertical structures that account for respectively 70.5% and 21.2% of the total variance on interannual-to-interdecadal time scales with the linear trend and seasonal cycle removed. The leading type manifests as vertically coherent warming/cooling with the maximal amplitude at similar to 100 m and exhibits evident interdecadal variations. The second type shows a vertical dipole structure between the surface (0-60 m) and subsurface (60-400 m) layers and interannual-to-decadal fluctuations. Ocean model experiments were performed to gain insights into underlying processes. The vertically coherent, basinwide warming/cooling of the IO on an interdecadal time scale is caused by changes of the Indonesian Throughflow (ITF) controlled by Pacific climate and anomalous surface heat fluxes partly originating from external forcing. Enhanced changes in the subtropical southern IO arise from positive air-sea feedback among sea surface temperature, winds, turbulent heat flux, cloud cover, and shortwave radiation. Regarding dipole-type variability, the basinwide surface warming is induced by surface heat flux forcing, and the subsurface cooling occurs only in the eastern IO. The cooling in the southeast IO is generated by the weakened ITF, whereas that in the northeast IO is caused by equatorial easterly winds through upwelling oceanic waves. Both El Nino- Southern Oscillation (ENSO) and IO dipole (IOD) events are favorable for the generation of such vertical dipole anomalies.
DOI	10.1175/JCLI-D-19-0851.1
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2019YFA0606702] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Natural Science Foundation of China (NSFC)[41776001] ; National Natural Science Foundation of China (NSFC)[41806001] ; National Program on Global Change and Air-Sea Interaction[GASI-IPOVAI-01-01] ; NSF-AGS[1446480] ; NSF-OCE[1658132]
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000615097000001
出版者	AMER METEOROLOGICAL SOC
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/169731
专题	海洋环流与波动重点实验室
通讯作者	Li, Yuanlong
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Xian, Peoples R China 2.Chinese Acad Sci, Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China 5.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA
第一作者单位	海洋环流与波动重点实验室; 中国科学院海洋大科学研究中心
通讯作者单位	海洋环流与波动重点实验室; 中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Li, Yuanlong,Han, Weiqing,Wang, Fan,et al. Vertical Structure of the Upper-Indian Ocean Thermal Variability[J]. JOURNAL OF CLIMATE,2020,33(17):7233-7253.
APA	Li, Yuanlong,Han, Weiqing,Wang, Fan,Zhang, Lei,&Duan, Jing.(2020).Vertical Structure of the Upper-Indian Ocean Thermal Variability.JOURNAL OF CLIMATE,33(17),7233-7253.
MLA	Li, Yuanlong,et al."Vertical Structure of the Upper-Indian Ocean Thermal Variability".JOURNAL OF CLIMATE 33.17(2020):7233-7253.

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Variability.pdf（4265KB）	期刊论文	出版稿	限制开放	CC BY-NC-SA	浏览