大气电场仪观测结果的修订

Calibration of the atmospheric electric field mill

大气电场仪是测量大气电场的重要设备,其测量结果受多种因素影响.通过一系列对比试验表明:电场仪采用探头正置或倒置结构时的观测结果基本一致,倒置结构有利于避免雨水带来的影响.不同的安装环境对测量结果的影响很大,为了消除这种影响,提出了对观测数据进行地面修订的方法,得到不同天气条件下的修订系数.所得结果对于实现多站电场仪联网观测的数据一致性有重要实际意义.

Electric field mills play an important role in measuring near-ground electric field,whose observation accuracy is prone to be influenced by many factors.Based on experiments with upright and inverted probes,this paper demonstrates that the orientationouts of the probes makes no difference to the results,while inverted probes couldminimize impacts of charged raindrops in the perennial and all-weather observation.In addition,it puts up a calibration method to get the electric field value on the ground in different weathers and different amplitudes of atmospheric electric field,which can eliminate impacts of the surroundings to realize uniformity and comparability of data from multiple sites.