基于要素差值分析的探空系统比对研究

Sounding System Comparison Study Based on the Analysis of the Elements of Difference

为比较59-701探空系统和L波段探空系统的探测性能,确定高空气象探测系统换型前后可能存在的系统差异,利用安徽省阜阳高空气象站60次的同步对比探测数据,运用计算两组数据平均差、标准差比较的方法,对实地探测的气象要素值进行分析,找出它们之间的性能差异。结果表明:两套探空系统,在位势高度和温度上差异较小,数据比较接近;在湿度上,59-701探空系统滞后误差较大,湿度变化比较平稳,曲线较均匀;在风向、风速指标上,L波段优于59-701探空系统,随着高度的增加,优势越明显;在测风精度、稳定性上,L波段探空雷达明显提高,59-701探空雷达的测风精度、稳定性相对较差。

In order to compare S9-701 and L-band sounding system detection performance,and determine the alttitude weather detection system there may be systematic before and after the changeover.By using Fuyang Anhui high altitude weather station 60 synchronous contrast data to calculate two sets data mean difference,standard deviation comparison to analyze the value of field testing of weather elements and identify the performance difference between them.The results show that the two sets of sounding system,the reign of potential height and temperature difference is small,the data are approached relatively.On humidity,S9-701 sounding system has bigger hysteresis error,changes in humidity is relatively stable,more uniform curve.On the wind direction and speed,L-band is better than S9-701,as altitude increases,the more obvious advantages in measurement accuracy and stability.L-band sounding radar is significantly improved than that of S9-701..