Kuroshio intrusion in the Luzon Strait in an eddy-resolving ocean model and air-sea coupled model

Qian Yang; Hailong Liu; Pengfei Lin; Yiwen Li

doi:10.1007/s13131-020-1670-5

Volume 39 Issue 11

Dec. 2020

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Qian Yang, Hailong Liu, Pengfei Lin, Yiwen Li. Kuroshio intrusion in the Luzon Strait in an eddy-resolving ocean model and air-sea coupled model[J]. Acta Oceanologica Sinica, 2020, 39(11): 52-68. doi: 10.1007/s13131-020-1670-5

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Qian Yang, Hailong Liu, Pengfei Lin, Yiwen Li. Kuroshio intrusion in the Luzon Strait in an eddy-resolving ocean model and air-sea coupled model[J]. Acta Oceanologica Sinica, 2020, 39(11): 52-68. doi: 10.1007/s13131-020-1670-5

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Kuroshio intrusion in the Luzon Strait in an eddy-resolving ocean model and air-sea coupled model

doi: 10.1007/s13131-020-1670-5

Qian Yang^{1, 2},
Hailong Liu^{1, 2
,
,},
Pengfei Lin^{1, 2},
Yiwen Li^{1, 2}

1.
State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
2.
College of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Funds: The National Key R&D Program for Developing Basic Sciences under contract Nos 2018YFA0605703, 2016YFC1401401 and 2016YFC1401601; the Strategic Priority Research Program of Chinese Academy of Sciences under contract No. XDB42010404; the National Natural Science Foundation of China under contract Nos 41976026, 41776030, 41931183, 41931182 and 41576026.

More Information

Corresponding author: E-mail: lhl@lasg.iap.ac.cn
Received Date: 2020-06-13
Accepted Date: 2020-07-23

Available Online: 2020-12-28

Publish Date: 2020-11-25

Abstract

Abstract

The Kuroshio intrusion in a quasi-global eddy-resolving model (LICOMH) and a fully air-sea coupled model (LICOMHC) was evaluated against observations. We found that the Kuroshio intrusion was exaggerated in the former, while biases were significantly attenuated in the latter. Luzon Strait transport (LST) in winter was reduced from –8.8×10⁶ m³/s in LICOMH to –6.0×10⁶ m³/s in LICOMHC. Further analysis showed that different LST values could be explained by different large-scale and local surface wind stresses and the eddies east to the Luzon Strait as well. The relatively stronger cyclonic eddies in LICOMH northeast of the Luzon Island led to weak Kuroshio transport and strong intrusion through the Luzon Strait. The summed transport of all three factors was approximately 2.0×10⁶ m³/s, which was comparable with the difference in LST between the two experiments. The EKE budget showed that strong EKE transport and the baroclinic transformation term led to strong cyclonic eddies east of the Kuroshio in LICOMH, while surface winds contributed little to the differences in the eddies.
- Kuroshio intrusion,
- South China Sea,
- eddy-resolving model,
- air-sea coupled model

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References(63)

References

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