Absolute geostrophic currents in global tropical oceans

Yang Lina; Yuan Dongliang

doi:10.1007/s00343-016-5092-3

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Absolute geostrophic currents in global tropical oceans

Updated：2023-05-16

- Absolute geostrophic currents in global tropical oceans
- Journal of Oceanology and Limnology Vol. 34, Issue 6, Pages: 1383-1393(2016)
- Affiliations：
  
  1. Institute of Oceanology Chinese Academy of Sciences
  2. University of Chinese Academy of Sciences
  3. Key Laboratory of Ocean Circulation and Waves Chinese Academy of Sciences
  4. Qingdao Collaborative Innovation Center of Marine Science and Technology
- Author bio：
- Funds：
- DOI：10.1007/s00343-016-5092-3
  CLC：
- Online First：11 March 2016，
  
  Published：2016
- Accepted：
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Yang, L., Yuan, D. Absolute geostrophic currents in global tropical oceans., Chin. J. Ocean. Limnol. 34, 1383–1393 (2016). https://doi.org/10.1007/s00343-016-5092-3
DOI：

Yang, L., Yuan, D. Absolute geostrophic currents in global tropical oceans., Chin. J. Ocean. Limnol. 34, 1383–1393 (2016). https://doi.org/10.1007/s00343-016-5092-3 DOI：

摘要

Abstract

A set of absolute geostrophic current (AGC) data for the period January 2004 to December 2012 are calculated using the P-vector method based on monthly gridded Argo profiles in the world tropical oceans. The AGCs agree well with altimeter geostrophic currents

Ocean Surface Current Analysis-Real time currents

and moored current-meter measurements at 10-m depth

based on which the classical Sverdrup circulation theory is evaluated. Calculations have shown that errors of wind stress calculation

AGC transport

and depth ranges of vertical integration cannot explain non-Sverdrup transport

which is mainly in the subtropical western ocean basins and equatorial currents near the Equator in each ocean basin (except the North Indian Ocean

where the circulation is dominated by monsoons). The identified non-Sverdrup transport is thereby robust and attributed to the joint effect of baroclinicity and relief of the bottom (JEBAR) and mesoscale eddy nonlinearity.

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references

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