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首页> 外文期刊>Journal of Geophysical Research, C. Oceans: JGR >Effects of the Yellow Sea Warm Current on the winter temperature distribution in a numerical model
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Effects of the Yellow Sea Warm Current on the winter temperature distribution in a numerical model

机译：黄海暖流对冬季温度分布的影响

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摘要

The temperature distribution and circulation patterns in the Yellow Sea (YS) are examined by using a wave-tide-circulation coupled numerical model. This model sufficiently reproduces the variation of the warm tongue structure of the Yellow Sea Warm Current (YSWC) from the double branches flowing along the YS Trough and the western 60 m isobath in January to the single stream along the western temperature front in March. This is observed in both the long-term monthly climatology and the satellite-based sea surface temperature images in recent years. Examining the local heat balance in the numerical model during the entire cooling period, it is found that the YSWC has a very important influence on the YS warm tongue structure. Compared with the surface cooling, the influence of the advection is small in the coastal shallow area but large in the deep warm tongue area (up to 50% of the magnitude of heat flux). Although bathymetry is the essential factor which causes the temperature front, the YSWC is the key factor which positions, shapes, and maintains the warm tongue structure. This helps to affirm the existence of the YSWC, at least as a monthly mean flow. However, more high-resolution current observations in deeper layers west of Cheju Island and the western fork of the YS Trough are needed to confirm the existence of the YSWC and its characteristic timescale in the real YS.
机译：利用潮汐-环流耦合数值模型研究了黄海（YS）的温度分布和环流模式。该模型充分再现了黄海暖流（YSWC）的暖舌结​​构的变化，从沿1月YS槽和西部60 m等深线流动的双分支到沿3月西部温度前沿的单流。近年来，在长期每月气候和基于卫星的海面温度图像中都可以观察到这一点。在整个冷却过程中，通过对数值模型中的局部热量平衡进行分析，发现YSWC对YS暖舌结构具有非常重要的影响。与表面冷却相比，对流的影响在沿海浅层区域较小，而在深部暖舌区域较大（达热通量的50％）。尽管测深法是导致温度上升的重要因素，但YSWC是定位，塑形并保持温暖舌头结构的关键因素。这有助于确认YSWC的存在，至少作为每月平均流量。但是，需要在济州岛以西和YS海槽西叉的更深层中进行更高分辨率的当前观测，以确认YSWC的存在及其在真实YS中的特征时标。

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