一次自动土壤水分观测数据异常的原因分析  

Analysis on the causes of abnormal soil moisture observation data

作　　者：李艳萍[1] 陶伟[1] 黄剑钊[1] Li Yanping;Tao Wei;Huang Jianzhao(Guangxi Meteorological Technology Equipment Center,Nanning Guangxi 530022)

机构地区：[1]广西壮族自治区气象技术装备中心,南宁530022

出　　处：《气象研究与应用》2020年第3期98-101,共4页Journal of Meteorological Research and Application

摘　　要：利用广西某土壤水分观测站2018年1月1日01时-2月23日08时10~100 cm(共8层)土壤水分逐小时监测数据,进行瞬时归一化频率值的变化趋势分析。结果表明,10~40 cm土壤层水分观测值先后出现异常是探测环境改变引起。对土壤水分观测数据的统计分析不仅能进行数据质量控制,也可以间接达到探测环境监控的目的,而传感器的归一化频率值的变化更能直接反映探测环境现状。The paper analyzed the hourly instantaneous normalized frequency values of 10-100cm(8 layers)in a soil moisture observation station from January 1,2018 to February 23,2018.The results show that anomalies in the observed values of soil moisture in the 10-40 cm soil layer were caused by changes in the detection environment;The statistical analysis of soil moisture observation data can not only perform data quality control,but also achieve the purpose of detecting environmental monitoring,and the change of the normalized frequency value of the sensor can directly reflect the current state of the detecting environment.

关 键 词：土壤水分 频域反射法原理(FDR) 探测环境 归一化频率 

分 类 号：P41[天文地球—大气科学及气象学]