海陆风影响下的黄海北部沿岸天气特征分析

Weather Features in the Coastal Area of the Northern Yellow Sea under the Influence of Sea-Land Breeze

利用丹东、东港、宽句3站2006～2008年地面观测数据及相关资料，对比黄海北部沿岸和内陆地区全年风向频率特征，统计沿海各站的海陆风日，分析该地区海陆风的宏观统计特征，并研究海陆风与降水和气温的相关关系。结果表明，黄海北部沿岸海陆风效应明显，季节分布不均，年际变化大；夏秋季海风常在沿海地区造成低云天气，并有利于海雾登陆；由海陆风引起的低层辐含线（海岸锋、海风锋）有利于雷暴等强对流天气的发生；海陆风效应是产生降水日变化的重要因子，并可制约高温天气的出现。

By using ground-based observation data and related information in Dandong, Donggang and Kuandian from 2006 to 2008, compared the characteristic of annual wind frequency in the coastal area of the northern Yellow Sea with that in the inland region, the sea-land breeze days of the coastal stations were counted, the macroseopieal statistics characteristics of the sea-land breeze in this area were analyzed, and the correlation between sea-land breeze and rainfall as well as temperature were studied. The results showed that the sea-land breeze and its annual variation in the coastal area of the northern Yellow Sea is obvious and it is seasonal maldistribution. Sea breeze often causes low clouds in coastal area in summer and autumn,and it is beneficial to sea fog landing. The Low-level convergence line（coastal front, sea breeze front） caused by sea-land breeze is helpful to the occurrence of thunderstorms and other severe convective weather. Land-sea breeze is an important factor for diurnal variation of precipitation and it can restrict the emergence of high temperature.