1961—2011年四子王旗气候变化特征分析

Analysis on Climatic Variation Characteristics of Siziwang Banner from 1961 to 2011 Years

利用四子王旗1961—2011年逐日平均气温、日最高气温、日最低气温以及降水量资料,综合运用线性倾向估计、修正的谢良尼诺夫公式等方法,综合分析了51a来四子王旗气候变化情况。结果表明:1961—2011年间,四子王旗全年平均气温的升高趋势十分显著的,且在1987—1989年出现增温突变现象,平均气温的升高主要是受最低温度的升高而影响的;夏季降水呈现减少趋势,冬、春、秋三个季节是增长趋势,相对来说春季降水增加是显著的;该地区干燥度整体来说并无明显变化趋势。

Using the data of daily mean temperature, daily maximum temperature, daily minimum temperature and precipitation, and the methods of linear trend estimate and XiliSergie Rachmaninoff formula, the variation situation of weather and climate were analyzed comprehensively in recent 51 years. The results showed that the rising trend of annual mean temperature was very pruminent in Siziwang banner from 1961 to 2011 years, moreover, tile warming jumping was appearing from1987 to 1989 years, the rising of minimum temperature was main factor to influence rise of mean temperature, summer precipitation showed a tendency of decrease, but the winter, spring and autunm were increasing, the spring was most prominent, the variation trend of dryness was not obvious in this area.