甘肃省双套自动气象站数据评估及校准修正分析

Analysis on data evaluation and calibration for dual automatic weather stations in Gansu

甘肃省全面实行双套自动气象站同时运行,双套站虽然保证了观测数据的完整性,但二者数据的差异性成了制约观测数据质量的瓶颈。文章通过缺测率、差值的标准偏差、超差率、一致率、存疑率等指标对西峰和民乐两站的双套站数据进行评估,分析了双套站数据差异性的原因;研究发现,对仪器测量数据校准修正能降低仪器测量误差,对双套站数据差异性的影响提升了观测数据质量。

Simultaneous observation of dual automatic weather stations has been put into practice in every national weather station in Gansu.Although the integrity of observation data is guaranteed by dual stations,the difference between them has become the bottleneck restricting the quality of observation data.The data of dual stations in two stations of Xifeng and Minle was evaluated through the indicators of lack of measurement rate,standard deviation of difference,out-of-tolerance rate,consistency rate and dubiousness rate.And the reasons for the difference of data between the dual stations were analyzed,which found that calibration of the instrument can reduce the influence of instrument measurement error on the data difference between two sets of stations and improve the quality of observation data.