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利用变分资料同化技术对P矢量方法进行优化处理,并采用此优化后的P矢量方法优化计算了日本海环流和日本海主要海峡的体积输运。日本海的主要环流系统,比如对马暖流(TWC)及其分支,东朝鲜暖流(EKWC)和日本近岸分支(JNB),极地锋海流(PFC),和日本海中的反气旋式涡,都能够被很好地一一反映出来。另外,优化后的P矢量方法还合理地计算出对马、津轻和宗谷海峡的海流,这体现了此方法优化计算浅水海峡中海流的能力,弥补了原P矢量方法的不足。
The variational data assimilation technique was used to optimize the P vector method. The optimized P vector method was used to optimize the volumetric transport of the SEA and the main straits of the Sea of Japan. Major circulation systems in the Sea of Japan, such as TWC and its branches, EKWC and JNB, PFC, and the anti-cyclonic vortex in the Sea of Japan Can be well reflected one by one. In addition, the optimized P vector method can also reasonably calculate the current of the Mazu, Tsugaru and Soya channels. This shows that this method optimizes the ability to calculate the current in the shallow water channel and makes up for the deficiencies of the original P vector method.