Deviation of the Lagrangian particle tracing method in the evaluation of the Southern Hemisphere annual subduction rate

Kai LIU; Shan GAO; Fan WANG

doi:10.1007/s00343-021-1097-7

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Deviation of the Lagrangian particle tracing method in the evaluation of the Southern Hemisphere annual subduction rate

Physics | Updated：2023-05-20

- Deviation of the Lagrangian particle tracing method in the evaluation of the Southern Hemisphere annual subduction rate
- Journal of Oceanology and Limnology Vol. 40, Issue 3, Pages: 891-906(2022)
- Affiliations：
  
  1.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
  2.Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
  3.University of Chinese Academy of Sciences, Beijing 100049, China
  4.China Laboratory for Ocean Dynamics and Climate, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
- Author bio：
  
  Shan GAO, gaoshan@qdio.ac.cn
- Funds：
- DOI：10.1007/s00343-021-1097-7
  CLC：
- Published：2022-03
- Accepted：
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Kai LIU, Shan GAO, Fan WANG. Deviation of the Lagrangian particle tracing method in the evaluation of the Southern Hemisphere annual subduction rate[J]. Journal of Oceanology and Limnology, 2022, 40(3): 891-906.
DOI：

Kai LIU, Shan GAO, Fan WANG. Deviation of the Lagrangian particle tracing method in the evaluation of the Southern Hemisphere annual subduction rate[J]. Journal of Oceanology and Limnology, 2022, 40(3): 891-906. DOI： 10.1007/s00343-021-1097-7.

摘要

Abstract

The classical Lagrangian particle tracing method is widely used in the evaluation of the ocean annual subduction rate. However

our analysis indicates that in addition to neglecting the effect of mixing

there are two possible deviations in the method: one is an overestimation due to not considering that the amount of subducted water at the source location may be inadequate during the late winter of the first year when the mixed layer becomes shallow; the other one is an underestimation due to the neglect of the effective subduction caused by strong vertical pumping. Quantitative analysis shows that these two deviations mainly exist in the low-latitude subduction areas of the South Pacific and South Atlantic. The two deviations have very similar distribution areas and can partially offset each other. However

the overall deviation is still large

and the maximum relative deviation ratio can reach 50%; therefore

it cannot be ignored.

关键词

Keywords

references

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