长兴站人工与自动日照观测的对比分析

A Comparative Analysis of Manual and Automatic Sunshine Observation at Changxing Station

摘要: 本文通过长兴国家站日照平行观测数据，对人工观测与自动观测的数据一致性进行统计、分析资料序列差异及出现原因。通过对比分析发现，暗筒式日照计记录的日照时数明显比FS-RZ1型光电式数字日照计多，光电式日照传感器观测灵敏度高，对早、晚日照的临界值和低日照天气的处理更准确；暗筒式日照计受人为影响明显，真实性差。日照自动观测对日出、日落的日照临界值记录准确，但是人工观测往往忽略了日照有无频繁转换时的变化细节，导致数据失真偏大。

Abstract: This paper uses the parallel observation data of sunshine at Changxing National Station to make statistics on the data consistency between manual observation and automatic observation, and analyze the differences in data sequences and the reasons for their occurrence. Through comparative analysis, the results show the number of sunshine hours recorded by the cylindrical sunshine meter is significantly higher than that of the FS-RZ1 photoelectric digital sunshine meter; the FS-RZ1 photoelectric digital sunshine has high observation sensitivity; thresholds of sunshine hours recorded by it at sunrise and sunset and low-sun weather are processed more accurately; the observation data from the cylindrical sunshine meter is obviously affected by human influence and its authenticity is poor. The automatic sunshine observation records the sunshine critical value of sunrise and sunset accurately, but the manual observation often ignores the details of changes in the sunshine with or without frequent transitions, resulting in large data distortion.