近7年蒙自自动站与人工站气温差异对比分析

利用蒙自站2003～2009年自动站与人工站的逐时气温平行观测资料,对两种仪器的观测值进行了对比差值及其均方根、标准差及不确定度、粗差率、一致率等方面的对比分析,并对自动站观测气温序列进行了显著性检验。结果表明:由于两种仪器气温的感应元件、测温原理和观测方式不同,造成两种观测数据存在差异,人工观测值普遍小于自动观测值。偏差存在明显的日变化,白天大于夜间,夏季的偏差明显高于其他季节,超出了+0.2℃的正常范围。自动站观测的气温值与历史序列中的气温值无显著性差异。由于两者在部分时次或月份还存在较大偏差,在业务应用时还需时行较长时间的平行观测,并对其进行均一性分析和客观订正。

COMPARATIVE ANALYSIS OF AUTOMATIC AND MANUAL ATMOSPHERIC TEMPERATURE IN MENG ZI FOR THE PAST 7 YEARS

Based on the automatic and manual hourly temperatures parallel observation data of mengzi from 2003 to 2009,the deviation and their RMS,standard deviation and indeterminacy,gross errors,consistency between the two sorts of data are analyzed,and the significant testing for the automatic data are done.The results show that because of the differences of the temperature sensing elements,temperature measuring principle and observation,the two kinds of observation data in different ways,the manual data is smaller...