Optimal estimation of zonal velocity and transport through Luzon Strait using variational data assimilation technique

Lan Jian; Bao Xianwen; Gao Guoping

doi:10.1007/BF02843626

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Optimal estimation of zonal velocity and transport through Luzon Strait using variational data assimilation technique

OriginalPaper | Updated：2023-05-16

- Optimal estimation of zonal velocity and transport through Luzon Strait using variational data assimilation technique
- Optimal estimation of zonal velocity and transport through Luzon Strait using variational data assimilation technique
- 海洋湖沼学报（英文） 2004年22卷第4期页码：335-339
- Affiliations：
  
  Physical Oceanography Laboratory Ocean University of China
- Author bio：
- Funds：
  
  Supported by the Major State Basic Research Program (No. G1999043810), Open Laboratory for Tropical Marine Environmental Dynamics (LED), South China Sea Institute of Oceanology, Chinese Academy of Sciences, and the NSFC (No. 40306004).
- DOI：10.1007/BF02843626
  中图分类号：
- 纸质出版：2004
- Accepted：
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Optimal estimation of zonal velocity and transport through Luzon Strait using variational data assimilation technique[J]. 海洋湖沼学报（英文）, 2004,22(4):335-339.

Jian, L., Xianwen, B. & Guoping, G. Optimal estimation of zonal velocity and transport through Luzon Strait using variational data assimilation technique., Chin. J. Ocean. Limnol. 22, 335–339 (2004). https://doi.org/10.1007/BF02843626
Optimal estimation of zonal velocity and transport through Luzon Strait using variational data assimilation technique[J]. 海洋湖沼学报（英文）, 2004,22(4):335-339. DOI： 10.1007/BF02843626.

Jian, L., Xianwen, B. & Guoping, G. Optimal estimation of zonal velocity and transport through Luzon Strait using variational data assimilation technique., Chin. J. Ocean. Limnol. 22, 335–339 (2004). https://doi.org/10.1007/BF02843626 DOI：

摘要

Abstract

A P-vector method was optimized using variational data assimilation technique

with which the vertical structures and seasonal variations of zonal velocities and transports were investigated. The results showed that westward and eastward flowes occur in the Luzon Strait in the same period in a year. However the net volume transport is westward. In the upper level (0m–−500m)

the westward flow exits in the middle and south of the Luzon Strait

and the eastward flow exits in the north. There are two centers of westward flow and one center of eastward flow. In the middle of the Luzon Strait

westward and eastward flowes appear alternately in vertical direction. The westward flow strengthens in winter and weakens in summer. The net volume transport is strong in winter (5.53 Sv) but weak in summer (0.29 Sv). Except in summer

the volume transport in the upper level accounts for more than half of the total volume transport (0m—bottom). In summer

the net volume transport in the upper level is eastward (1.01 Sv)

but westward underneath.

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references

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