寿县24节气气候特征分析

Analysis on Climatic Characteristics of “24 Solar Terms” in Shouxian County

利用寿县气候观象台1960—2009年的逐日平均气温、日照时数和降水量资料,对寿县气候变化特征进行分析后认为:24节气平均气温的时间序列呈准正态单峰分布,大暑全年最热,平均气温28.3℃,小寒全年最冷,平均气温1.3℃,从20世纪80年代后开始,各节气均有明显的变暖趋势;降水量最大出现在夏至,历年平均117.5 mm,最小出现在冬至和大雪,仅8.4 mm;平均日照时数最大值出现在大暑,历年平均8.0 h,最小值在冬至和小寒,为4.6 h。

Based on the daffy temperature data,sunshine hours and the precipitation data of Shouxian National Climate Observatory in 1951 to 2009, the climatic characteristics of Shouxian County were analyzed. The time series of average temperature in ＂24 solar terms＂ showed quasi normal distribution, namely single peak type, and great heat meant the hottest time within one year, the average temperature was 28.3 ℃, and slight cold was the coldest time within one year, the average temperature was 1.3 ℃. Since the 1980 s, the solar term had obvious warming trend;average rainfall maximum appears in the summer solstice （117.5 mm）, the minimum appeared in the Heavy Snow and the Winter Solstice （8.4 mm） ;average sunshine in the great heat was the longest （8.0 h ）, the shortest was the winter solstice and the slight cold （4.6 h ）.