Comparative Analysis of the Gale over Bohai Straits
GAO Rui-hua et al(Yantai Meteorological Bureau of shandong,Yantai,Shandong 264003)
[Objective] The space distribution characters of the gale over Bohai straits were investigated.[Method] Based on the daily meteorological data of 6 stations in the coastal area of Yantai and Dalian from 1975 to 2005,the space contrast distribution characters of the gale were analyzed.[Result] The result showed that island stations had more gale days and strong wind power,representing gale situation perfectly over Bohai Straits.The main gale's direction over Bohai Straits was NW-NNE.The gale's direction was north in Dalian coastal,and the south gale days increased obviously in Yantai coastal in spring and autumn;north and south gales were stronger than the east and west.Gale in the Nanhuangcheng station was bigger in amplitude,faster in speed increase,more excessive in gale days,stronger in wind power.The time when wind power became large was evidently different between both stations.[Conclusion] This study could provide important reference to the gale's forecast and service over Bohai Straits.