Comparative simulation study of effects of eddy-topography interaction in the East/Japan Sea deep circulation

CHOI Youngjin

doi:10.1007/s13131-015-0693-1

Volume 34 Issue 7

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CHOI Youngjin. Comparative simulation study of effects of eddy-topography interaction in the East/Japan Sea deep circulation[J]. Acta Oceanologica Sinica, 2015, 34(7): 1-18. doi: 10.1007/s13131-015-0693-1

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CHOI Youngjin. Comparative simulation study of effects of eddy-topography interaction in the East/Japan Sea deep circulation[J]. Acta Oceanologica Sinica, 2015, 34(7): 1-18. doi: 10.1007/s13131-015-0693-1

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Comparative simulation study of effects of eddy-topography interaction in the East/Japan Sea deep circulation

doi: 10.1007/s13131-015-0693-1

CHOI Youngjin

Center for Earth Information Science and Technology, Japan Agency for Marine-Earth Science and Technology, Yokohama 236-0001, Japan;GeoSystem Research Corporation, Gyeonggi-do 435-824, Korea

Received Date: 2014-05-27
Rev Recd Date: 2014-10-10

Abstract

Abstract

In this study the structure and seasonal variations of deep mean circulation in the East/Japan Sea (EJS) were numerically simulated using a mid-resolution ocean general circulation model with two different parameterizations for the eddy-topography interaction (ETI). The strong deep mean circulations observed in the EJS are well reproduced when using the ETI parameterizations. The seasonal variability in the EJS deep layer is shown by using ETI parameterization based on the potential vorticity approach, while it is not shown in the statistical dynamical parameterization. The driving mechanism of the strong deep mean currents in the EJS are discussed by investigating the effects of model grids and parameterizations. The deep mean circulation is more closely related to the baroclinic process and potential vorticity than it is to the wind driven circulation.
- East/Japan Sea,
- deep mean current,
- seasonal variability,
- ocean general circulation model,
- eddytopography interaction

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