关键词: 气温变化, 气温变化, 气候突变, 累积距平法(CA), M-K, 临沂市

Abstract: 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.