Contribution of Deep Vertical Velocity to Deficiency of Sverdrup Transport in the Low-Latitude North Pacific

doi:10.1175/JPO-D-23-0006.1

IOCAS-IR > 海洋环流与波动重点实验室

	Contribution of Deep Vertical Velocity to Deficiency of Sverdrup Transport in the Low-Latitude North Pacific
	Zhang, Kun1,2,3 ; Wang, Qiang 4,5; Yin, Baoshu 1,2,3,6; Yang, Dezhou 1,2,3,6; Yang, Lina7
	2023-11-01
发表期刊	JOURNAL OF PHYSICAL OCEANOGRAPHY
ISSN	0022-3670
卷号	53 期号:11 页码:2651-2668
通讯作者	Zhang, Kun(kzhang@qdio.ac.cn)
摘要	Deep vertical velocity is a critical factor causing deficiencies in Sverdrup theory. However, few studies have focused on its influence in the low-latitude western Pacific. Through multiple analyses of observational, reanalysis, and sim-ulation data, this study explored the contribution of deep nonzero vertical velocity to the Sverdrup transport inaccuracy in the low-latitude North Pacific. The vertical velocities inducing relatively small non-Sverdrup transport exist within 1500-2500 m, which exhibit similar patterns with opposite values to the south and north of 13 degrees N. The zonally integrated meridional volume transport associated with these vertical velocities displays nonnegligible dipolar zonal bands west of ap-proximately 150 degrees W. The positive and negative transport bands, centered at 11 degrees and 17 degrees N, can reach an amplitude of ap-proximately 8.0 Sv (1 Sv ; 106 m3 s21) when integrated from the eastern boundary to 140 degrees E. On average, such integrated meridional transport makes up roughly half of the prominent Sverdrup transport discrepancies in the central-western Pacific. Further investigation indicated that the spatial pattern of these vertical velocities is modulated by ocean topography and deep meridional currents. Moreover, a near-global test suggested that the meridional non-Sverdrup transport related to deep vertical velocity is widespread and undergoes remarkable multidecadal variation. This study reveals the disruptive role of deep vertical velocity in disturbing the Sverdrup balance and emphasizes the consideration of its long-term variation when diagnosing wind-driven circulation changes using Sverdrup theory.
关键词	Ocean North Pacific Ocean Ocean circulation
DOI	10.1175/JPO-D-23-0006.1
收录类别	SCI
语种	英语
资助项目	National Natural Sci- ence Foundation of China[92158202] ; National Natural Sci- ence Foundation of China[42090044] ; National Natural Sci- ence Foundation of China[42076017]
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:001103479200001
出版者	AMER METEOROLOGICAL SOC
WOS关键词	OCEAN DATA ASSIMILATION ; COUPLED MODEL ; CIRCULATION ; ATLANTIC ; CURRENTS ; BALANCE ; ACCOUNT
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/183868
专题	海洋环流与波动重点实验室
通讯作者	Zhang, Kun
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China 3.Laoshan Lab, Lab Ocean & Climate Dynam, Qingdao, Peoples R China 4.Hohai Univ, Key Lab Marine Hazards Forecasting, Minist Nat Resources, Nanjing, Peoples R China 5.Hohai Univ, Coll Oceanog, Nanjing, Peoples R China 6.Univ Chinese Acad Sci, Beijing, Peoples R China 7.Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Zhang, Kun,Wang, Qiang,Yin, Baoshu,et al. Contribution of Deep Vertical Velocity to Deficiency of Sverdrup Transport in the Low-Latitude North Pacific[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2023,53(11):2651-2668.
APA	Zhang, Kun,Wang, Qiang,Yin, Baoshu,Yang, Dezhou,&Yang, Lina.(2023).Contribution of Deep Vertical Velocity to Deficiency of Sverdrup Transport in the Low-Latitude North Pacific.JOURNAL OF PHYSICAL OCEANOGRAPHY,53(11),2651-2668.
MLA	Zhang, Kun,et al."Contribution of Deep Vertical Velocity to Deficiency of Sverdrup Transport in the Low-Latitude North Pacific".JOURNAL OF PHYSICAL OCEANOGRAPHY 53.11(2023):2651-2668.

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