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首页> 外文期刊>Journal of Physical Oceanography >The South China Sea Throughflow Retrieved from Climatological Data
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The South China Sea Throughflow Retrieved from Climatological Data

机译：气候资料反演南海海流

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The salinity distribution in the South China Sea (SCS) has a pronounced subsurface maximum from 150-220 m throughout the year. This feature can only be maintained by the existence of a mean flow through the SCS, consisting of a net inflow of salty North Pacific tropical water through the Luzon Strait and outflow through the Mindoro, Karimata, and Taiwan Straits. Using an inverse modeling approach, the authors show that the magnitude and space-time variations of the SCS thermohaline structure, particularly for the salinity maximum, allow a quantitative estimate of the SCS throughflow and its distribution among the three outflow straits. Results from the inversion are compared with available observations and output from a 50-yr simulation of a highly resolved ocean general circulation model. The annual-mean Luzon Strait transport is found to be 2.4 ± 0.6 Sv (Sv = 10~6 m~3 s~(-1)). This inflow is balanced by the outflows from the Karimata (0.3 ± 0.5 Sv), Mindoro (1.5 ± 0.4), and Taiwan (0.6 ± 0.5 Sv) Straits. Results of the inversion suggest that the Karimata transport tends to be overestimated in numerical models. The Mindoro Strait provides the only passage from the SCS deeper than 100 m, and half of the SCS throughflow (1.2 ± 0.3 Sv) exits the basin below 100 m in the Mindoro Strait, a result that is consistent with a climatological run of a 0.1° global ocean general circulation model.
机译：南海的盐度分布全年明显具有最大的地下最大范围150-220 m。只有通过南海的平均流量才能保持这一特征，该流量包括咸北太平洋热带水通过吕宋海峡的净流入以及通过明多洛，卡里马塔和台湾海峡的净流出。使用逆建模方法，作者表明，SCS热盐结构的大小和时空变化，特别是对于盐度最大值，可以定量估算SCS的通流量及其在三个流出海峡之间的分布。将反演的结果与可获得的观测结果进行比较，并将高度解析的海洋总环流模型进行50年的模拟输出。吕宋海峡的年平均运输量为2.4±0.6 Sv（Sv = 10〜6 m〜3 s〜（-1））。来自Karimata海峡（0.3±0.5 Sv），Mindoro海峡（1.5±0.4）和台湾海峡（0.6±0.5 Sv）的水流平衡了这一流入。反演结果表明，Karimata运移在数值模型中往往被高估了。 Mindoro海峡是南海唯一一条深度超过100 m的通道，SCD流量的一半（1.2±0.3 Sv）离开Mindoro海峡100 m以下的盆地，其结果与0.1 km的气候变化一致°全球海洋总循环模型。

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