Contribution of Deep Vertical Velocity to Deficiency of Sverdrup Transport in the Low-Latitude North Pacific | |
Zhang, Kun1,6,7; Wang, Qiang2,3; Yin, Baoshu1,4,6,7; Yang, Dezhou1,4,6,7; Yang, Lina5 | |
刊名 | JOURNAL OF PHYSICAL OCEANOGRAPHY |
2023-11-01 | |
卷号 | 53期号:11页码:2651-2668 |
关键词 | Ocean North Pacific Ocean Ocean circulation |
ISSN号 | 0022-3670 |
DOI | 10.1175/JPO-D-23-0006.1 |
通讯作者 | Zhang, Kun(kzhang@qdio.ac.cn) |
英文摘要 | 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. |
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关键词 | OCEAN DATA ASSIMILATION ; COUPLED MODEL ; CIRCULATION ; ATLANTIC ; CURRENTS ; BALANCE ; ACCOUNT |
WOS研究方向 | Oceanography |
语种 | 英语 |
出版者 | AMER METEOROLOGICAL SOC |
WOS记录号 | WOS:001103479200001 |
内容类型 | 期刊论文 |
源URL | [http://ir.qdio.ac.cn/handle/337002/183867] |
专题 | 海洋研究所_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.Hohai Univ, Key Lab Marine Hazards Forecasting, Minist Nat Resources, Nanjing, Peoples R China 3.Hohai Univ, Coll Oceanog, Nanjing, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang, Peoples R China 6.Laoshan Lab, Lab Ocean & Climate Dynam, Qingdao, Peoples R China 7.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China |
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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