空中水分对探空仪温度观测的影响

Influence Analysis of Air Moisture on Temperature Observations from Radiosondes

分析了射阳高空观测站2014年全年探测资料,发现因为水分影响导致温度测量数据失真是比较普遍的问题,其主要原因是当温度元件在高湿区吸附了水分进入低湿区时,元件会因水分蒸发带走潜热使温度测值低于环境实际温度。由于空中环境温度、水分分布、水分相态等情况的不同,形成了形态各异的失真记录,对此我们选择部分实例进行分析,同时进行了测试检验,并就这些失真数据对使用者可能造成的一些影响进行了说明。

The radiosonde temperature observation data collected at the Sheyang station throughout 2014 are analyzed,and it is discovered that the detection errors caused by air moisture are very common.When temperature sensors transferring from high humidity area to low humidity area,the observed temperature will become lower than environmental temperature due to water evaporation.Inconsistent air temperature,moisture distribution,and phase states of water in the atmosphere result in disparate errors in the collected data.Several practical cases,as examples,are selected to perform simple experiments,and the potential influences of air moisture on radiosonde temperature observations are discussed.