We investigate the control mechanisms of the deep Pacific Ocean circulation by introducing updated methods for parameterizing tidal mixing. The column-integrated rates of dissipation in near- and far-fields are derived from the tidal energy conversion and dissipation rates estimated by a high resolution tide model. In the calculation of the far-field mixing, its dependency on stratification is taken into account based on theoretical and observational knowledge. Unlike previous studies that did not take the stratification dependence into account, the far-field mixing does not function to significantly enhance the deep Pacific Ocean circulation. The deep Pacific Ocean circulation is also found to be insensitive to the decay scale height of the near-field mixing. However, these factors affect the reproducibility of the radiocarbon distribution, especially its minimum in the upper deep layer, through their influence on the mixing with the shallower layers.

中文翻译：

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潮汐引起的垂直混合在深太平洋环流中的作用

我们通过引入潮汐混合参数化的更新方法来研究深太平洋环流的控制机制。近场和远场的柱积分耗散率来自高分辨率潮汐模型估计的潮汐能转换和耗散率。在远场混合的计算中，基于理论和观测知识考虑了其对分层的依赖性。与之前没有考虑分层依赖性的研究不同，远场混合并不能显着增强深太平洋环流。还发现深太平洋环流对近场混合的衰减标度高度不敏感。然而，这些因素会影响放射性碳分布的再现性，