2019年辽宁及内蒙古冻土自动观测及其分钟数据的时间一致性检测

在辽宁省喀左站、辽阳站和内蒙古满洲里站统一安装5种型号冻土自动观测仪进行外场试验，采集2019年3—6月逐分钟冻土数据，采用纵横极值集合法，对采样数据进行时间一致性质量控制，与3站的人工定时数据进行对比分析。根据同期人工观测数据，判断冻土自动观测异常可疑数据和异常数据阈值，分别为5 cm和11 cm，据此开展验证。结果表明: 冻土自动观测仪分钟数据完整率为99.59%;冻土自动观测仪平均冻土层数与人工观测基本一致，符合冻土业务数据分布特性; 5种类型冻土自动观测仪均能较好地反映不同气候区域的冻土的分钟数据变化，冻土自动观测分钟数据质量控制阈值合理可靠。

Automatic observation of frozen soil and its time consistency detection of minute data in Liaoning provice and Inner Mongolia Autonomous region in 2019

Five types of frozen soil automatic observational instruments were installed for field experiment at Kazuo station, Liaoyang station in Liaoning province and Manzhouli station in Inner Mongolia Autonomous region.The minute frozen soil data were collected from March to June 2019.These dataset were processed with the control of the time consistency and quality adopting the vertical and horizontal extreme value set method and compared with the manual timing data of the three stations.According to the manual observation data in the same period, the thresholds of abnormal suspicious data and abnormal data of automatic observation of frozen soil were recognized as 5 cm and 11 cm respectively, and the verification was carried out accordingly.The results show that the integrity rate of minute data of frozen soil automatic observation instrument is 99.59%.The average number of frozen soil layers observed with the automatic instrument is consistent with the manual observation, which is in line with the distribution characteristics of frozen soil data applied in business.The five types of frozen soil automatic observation instruments can better reflect the minute changes of frozen soil data in different climatic regions, and the quality control threshold of minute data from frozen soil automatic observation is reasonable and reliable.