The physical mechanisms which led to the explosive consecutive (cascade) cyclogenesis of “the major southern cyclone–the mesocyclone” pair over the Sea of Japan on January 17-21, 2016 are considered. The important role of oceanographic (the thermal state of the northwestern Sea of Japan) and synoptic (the strong cold ultrapolar invasion of Arctic air) factors is demonstrated. The interaction of these factors led to heavy precipitation, storm wind, and intense sea waves. The numerical experiments using the WRF-NMM atmosphere model and various initial conditions for the Sea of Japan surface temperature allowed identifying the driving atmospheric and marine factors needed for the development of cascade cyclogenesis. It is shown that the increased heat accumulation in the sea combined with ultrapolar invasions can initiate the cascade cyclogenesis development. Perhaps, these regional atmospheric and oceanic processes and their interaction response to the climate change of the recent decades.

中文翻译：

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日本西北海级联回旋的发展

考虑了导致2016年1月17日至21日在日本海上空爆发的“南半球主要旋风-中旋风”的爆炸性连续（级联）气旋的物理机制。证明了海洋因素（日本西北海的热状态）和天气因素（北极空气的强烈冷超极入侵）的重要作用。这些因素的相互作用导致大量降雨，暴风雨和强烈的海浪。使用WRF-NMM大气模型和日本海表层温度的各种初始条件进行的数值实验可以确定发展级联旋回作用所需的驱动大气和海洋因素。结果表明，海中热量积累的增加与超极子的入侵相结合，可以启动级联的细胞周期发育。也许，这些区域性的大气和海洋过程及其相互作用对近几十年来的气候变化做出了反应。