Analysis on Formation Reason of a Gale Induced by Bohai Sea Cyclone

摘要

[Objective] The research aimed to analyze formation reason of a gale induced by Bohai Sea cyclone.[Method] Yantai buoy station and Jimu Island automatic station were selected as reference of the actual situation.Gale weather process which occurred in Yantai during 26-27 April,2010 was analyzed.[Result] This gale weather was caused by Bohai Sea cyclone.Upper strong cold air invaded,which promoted ground low pressure quickly developing and deepening into Bohai Sea cyclone.Momentum download effect of the upper wind made ground wind speed increase.In forecast process of the gale,weather online and Yantai Grapes model both had basic accurate forecasts to magnitude,direction and influence system of the gale,especially to the wind field at 10 m.[Conclusion] This research provided reference basis for forecast of such gale in future.