Characteristics of Climate Change and its Climatic Attribution Analysis of Recent 50 Years in Qixian,Shanxi

Based on the observational data from meteorological stations in Qianxian from 1961 to 2010, the characteristics of climate change and its tendency were analyzed using the methods of a linear trend analysis, a moving average and a wavelet analysis. The results indicated that the annual average air temperature and seasonal air temperature were in the increasing trends, and their tendency rates were 0.36,0.39,0.18,0.32 and 0.55 ℃/decade, and there were the warm abrupt changes in the 1993 s for annual average air temperature. For the seasonal air temperature, the warm abrupt changes in spring, autumn, summer and winter occurred in1997 s, 1997 s,1995s and 1990 s. Precipitation were on the declining curve in recent years, with a tendency rate of-23.34 mm/decade, and the decreasing abrupt changes occurred in 1978. For the seasonal precipitation, decreasing trend was the biggest in summer, autumn followed, and spring and winter was not so significant. By comparison of change in air temperature and precipitation trends, it has been concluded that there were negative correlation(α=0.05), besides winter, which the response of these variables to the climate change was the most significant in summer. The climate warming in Qixian were connected with rapid development of industrialization.