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Diagnostic analysis on the northern South China Sea winter counter-wind current

机译：南海北部冬季冬季逆风的诊断分析

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摘要

The winter counter-wind current (also named the South China Sea Warm Current (SCSWC)) in the northern South China Sea (SCS) has been known well for decades, but its mass and momentum origination have not be quantitatively evaluated before. In this paper, the high resolution three-dimensional ocean circulation model is adopted to reproduce the circulation in the northern SCS. The diagnostic analyses are performed to investigate the momentum budget in the northern SCS continental shelf/slope and the momentum propulsion of the SCSWC. It is indicated that the across-shelf pressure gradient and the across-shelf transport are responsible for the formation of the SCSWC, while the along-shelf pressure gradient is balanced by the surface stress, bottom stress, and Coriolis force. The magnitude of the terms in the along-shelf momentum equation is smaller than that in the across-shelf one. The analysis on the momentum budget in the northern SCS will benefit the marine environmental prediction in the future.
机译：南海北部（SCS）的冬季逆风流（也称为南海暖流（SCSWC））已有数十年的知名度，但是其质量和动量的起源以前尚未得到定量评估。本文采用高分辨率三维海洋环流模型重现了南海北部的环流。进行诊断分析以调查北南海陆架/斜坡的动量收支和SCSWC的动量推进。结果表明，跨架压力梯度和跨架输送是SCSWC形成的原因，而沿架压力梯度则由表面应力，底部应力和科里奥利力平衡。沿架动量方程中的项的大小小于跨架动量方程中的项的大小。对南海北部动量预算的分析将有助于未来的海洋环境预测。

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