近10年沈阳对流层顶高度及温度变化特征

利用2005—2014年沈阳探空站高空观测资料,采用趋势分析方法,对近10年沈阳两类对流层顶高度和温度特征进行对比分析。结果表明,沈阳全年各月均可观测到复合对流层顶,两类对流层顶存在明显的季节差异;第1对流层顶的平均高度在夏季相对较高,冬季相对较低,第2对流层顶的平均高度在全年变化较为平稳。对于对流层顶的温度,夏季、冬季和年平均温度均呈上升趋势,春季呈弱上升趋势;多年平均值的年变化表现为第1对流层顶温度夏秋季最高,春季最低,变化幅度相对较小;第2对流层顶温度夏季最高,冬季最低,变化幅度相对较大。

Change Characteristics of the Height and Temperature of the Tropopause in Shenyang in Recent 10 Years

Based on the high altitude observation data of Shenyang sounding station in 2005-2014,the characteristics of height and temperature of two types of the tropopause in Shenyang in recent 10 years were analyzed by trend analysis method.The results showed that the composite troposphere could be observed in Shenyang in the whole year,there were obvious seasonal differences between the two groups of the tropopause.The average height of the first tropopause was relatively high in summer and relatively low in winter,and the average height of the second tropopause was more stable throughout the year.For the temperature of the tropopause,the summer,winter and annual average temperature were increasing trend,the spring was weak rising trend.The annual variation of the annual mean value was the highest in the first tropopause in summer and autumn,and the lowest in spring,and the variation range was relatively small.The second tropopause was the highest in summer and the lowest in winter,and the variation range was relatively large.