北欧海的环流、回流、对流和溢流交织在一起，形成了复杂的内部过程，既包括了水体和热量的输送，也包括了能量的转换、不同水层的沟通。针对这些问题，重点开展对北欧海核心内部过程的研究。第一，北欧海内部溢流对冷水库的驱动作用和能量输送机制。研究扬马延水道形成内部溢流，势能输出与挪威海水压作用的密切联系及其对驱动格陵兰-苏格兰海脊溢流的关键作用。第二，格陵兰海浅对流对海洋热盐环流的支撑能力。研究对流深度与溢流水体结构的关系，探讨格陵兰海对流水体的翻转对溢流的影响。第三，全球变化背景下北欧海内部过程对外界的溢出效应。着重考虑北欧海内部过程对北欧海能量和物质输出的改变。此外，主要通过北欧海的熵平衡来研究溢出效应。一方面，分析北欧海的熵生和熵流，认识造就和调控高熵的北欧海和低熵的北冰洋的关键因素。另一方面，揭示北欧海与北大西洋、北冰洋和大气的熵交换。通过这些研究，揭示北欧海的自然调整过程及其对全球变化的作用

The interleaving of Nordic Seas’ circulation, return currents, convection, and overflow composes of complicated inner processes, which includes mass and heat transportation, transform of different kind of energies, vertical mass exchange, etc. This study focuses on some core inner processes of Nordic Seas. The first is the driven mechanism of the Inner Overflow of Nordic Seas on the Cool Pool and potential energy exportation; the connection of the Inner Overflow and the hydraulic action; the key function to drive the Greenland-Scotland Ridge Overflow. The second is the supplement of convection to the global thermohaline circulation. The connection between convection depth and the overflow amount of water masses will be studied, and the overturning of the convected water in the Greenland Sea will be explored. The third is the spillover effect of inner processes of Nordic Seas under the global variation condition. Besides the variation of mass and energy exportation caused by inner processes of Nordic Seas, the theory for entropy equilibrium is used to study the spillover effect. The entropy production and entropy flow of Nordic Seas are studied to identify the key factors in building the high entropy Nordic and low entropy Arctic. On the other hand, to calculate the entropy exchanges among Nordic Seas, North Atlantic, and atmosphere. Based on the results of these studies, the natural adjustment of the Nordic Seas and their global effects would be revealed.