The role of small-scale topography in modulating eddy scale in the northern South China Sea

Yang, Zhibin, Jing, Zhao and Zhai, Xiaoming (2023) The role of small-scale topography in modulating eddy scale in the northern South China Sea. Journal of Geophysical Research - Oceans, 128 (3). ISSN 2169-9275

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Abstract

A high-resolution nested model initialized with either smooth or synthetically-generated rough topography is used to investigate the role of small-scale topography in modulating eddy scales in the northern South China Sea. It is found that while adding small-scale topography leads to negligible changes in the surface eddy scales and their seasonal cycle, it significantly reduces the bottom eddy scales by about 30-40%. This reduction in bottom eddy scales is mainly contributed by three processes: wave generation due to flow interaction with rough topography and subsequent wave propagation into the ocean interior, forward energy cascade associated with processes such as nonpropagating form drag effect, and the influence of small-scale topography on the deep boundary current. Our results highlight the importance of small‐scale topography in setting the eddy length scales particularly in the deep ocean.

Item Type:	Article
Additional Information:	The model configuration files are available online: https://doi.org/10.7910/DVN/M2QSGG Acknowledgments: ZY and ZJ are supported by Science and Technology Innovation Foundation of Laoshan Laboratory (No. LSKJ202202501), Taishan Scholar Funds (tsqn201909052), Qingdao applied research project. The research presented in this paper was carried out on the High Performance Computing Cluster supported by National Supercomputer Center in Tianjin.
Faculty \ School:	Faculty of Science > School of Environmental Sciences Faculty of Science > School of Natural Sciences
UEA Research Groups:	Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences
Depositing User:	LivePure Connector
Date Deposited:	15 Feb 2023 17:30
Last Modified:	15 Mar 2023 15:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/91145
DOI:	10.1029/2022JC019524

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