本溪地区大风天气气候统计分析及概念模型

选取1980—2010年本溪市区、小市镇、桓仁镇、草河口站4个测站逐日自记风记录，运用气候资料统计整理方法分析本溪地区大风的气候特征，得到了本溪地区大风的一些气候事实及规律。结果显示：本溪地区大风日数年际变化分3个阶段：1980—1984年偏多，1984—1998年正常波动不大，1999年以后大风日数明显减少；大风天气最多的季节是春季，以4、5月最多；最多的为偏WNW大风。根据环流形势特征，用天气学方法对大风进行了分型与分析，将大风分为冷锋后部型、高压后部偏南型、低压发展型3种天气环流类型，并给出了每个概念模型的预报着眼点，为今后的预报提供一定参考。

Analysis of Strong Winds Over Benxi and the Conceptual Mode

Based on the statistics of daily wind records in 4 observational stations of Benxi City, Xiaoshi Town, Huanren Town and Caohekou during 1980-2010, the climatic characteristics of strong winds over Benxi were analyzed and a set of climatic realities and rules were concluded. The results showed that: the inter-annual variations of the strong wind days in Benxi could be divided into 3 periods. The strong wind days were excessive during 1980-1984 and normal in 1984-1998, but deficient after 1999. Strong winds mostly occurred in spring, especially in April and May, which was characterized by the wind direction of WNW. According to the features of atmospheric circulation, 3 circulation patterns were separated using synoptic methods, showing that strong winds may happen behind the cold front or the southern part of the high-pressure and in the developing low-pressure. Moreover, the key points of forecasting each conceptual mode were also presented in order to provide a reference.