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首页> 外文期刊>Journal of Geophysical Research, C. Oceans: JGR >Mixed layer salinity budget in the tropical Pacific Ocean estimated by a global GCM
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Mixed layer salinity budget in the tropical Pacific Ocean estimated by a global GCM

机译：全球GCM估算的热带太平洋混合层盐度预算

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摘要

The mixed layer salinity (MLS) budget of the tropical Pacific is investigated using results from a model of the Consortium for Estimating the Circulation and Climate of the Ocean (ECCO). The results focusing on the western Pacific freshwater pool indicate that the long-term averaged surface freshwater flux is well balanced by ocean dynamics, in which the subsurface processes account for the major part. The MLS budget shows significant seasonal and interannual variability, as a consequence of interplay among surface freshwater flux, advection, mixing, and vertical entrainment. On seasonal time scale, both the MLS and mixed layer depth are largely controlled by surface freshwater flux. The opposite phase between the subsurface processes and the barrier layer thickness confirms the important influence of the barrier layer on vertical mixing and entrainment from below. On interannual time scale, all the MLS budget terms show significant ENSO signal, which in turn is highly correlated with the salinity front and barrier layer thickness in the equatorial Pacific.
机译：使用估计海洋环流和气候联盟（ECCO）的模型结果，研究了热带太平洋的混合层盐度（MLS）预算。以西太平洋淡水池为重点的结果表明，长期平均地表淡水通量被海洋动力学很好地平衡了，其中地下过程占了主要部分。由于地表淡水通量，平流，混合和垂直夹带之间的相互作用，MLS预算显示出明显的季节和年际变化。在季节性尺度上，MLS和混合层深度都主要受地表淡水通量控制。地下过程与阻挡层厚度之间的相反相位证实了阻挡层对垂直混合和从下方夹带的重要影响。在年际尺度上，所有MLS预算条款都显示出重要的ENSO信号，这反过来又与赤道太平洋的盐度前缘和阻挡层厚度高度相关。

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