通过对湖州、长兴、德清三站在 2018 年 5～8 月期间暗筒式日照计和自动观测日照仪器所得日照时数进行相关性对比, 以及对三站逐日日照时数相对差值的统计分析, 发现暗筒式日照计和 FS-RZ1 型日照时数传感器、 FS-ST 系列自动太阳跟踪器所得观测值相关程度极高。相比较而言, 自动观测仪器所得日照数据具有较高的可信度, 其中 FS-RZ1 型日照时数传感器和 FS-ST 系列自动太阳跟踪器所得观测值与暗筒式日照计所得观测值相比均偏低。 FS-ST 系列自动太阳跟踪器与暗筒式日照计所得日照时数间的相关性可达到 0.99 左右, 比 FS-RZ1 型日照时数传感器的相关性略高, 这与站内观测人员有无对比人工自动观测数值的意识有一定的关系。分析表明台站所处探测环境、局部天气条件以及台站观测人员业务素质差异都是影响人工与自动日照时数相对差值的因子。

By comparing the sunshine durations obtained by Jordan sunshine recorder and the two automatic observation sunshine detectors (FS-RZ1 sunshine sensor and FS-ST series automatic solar tracker, abbreviated as FS-RZ1 and FS-ST respectively) during May-August2018 in Huzhou, Changxing, and Deqing, Zhejiang, China, and statistically analyzing the relative difference between the daily sunshine durations of the three detectors, it is found that the observation values of the three detectors are highly correlated . In comparison, there is a high degree of credibility of sunshine duration obtained by the automatic observation detector, and the sunshine durations of FS-RZ1 and FS-ST are generally lower than those of Jordan sunshine recorder. The correlation of FS-ST and Jordan sunshine recorder can reach about 0.99, which is slightly higher than that of FS-RZ1 and Jordan sunshine recorder. This difference may be related to whether the Deqing station observers have the awareness to do a comparison of artificial and automatic observations. The analysis also shows that the detection environment, local weather conditions and the difference in the operational quality of station observers are the main factors that affect the relative difference between artificial and automatic sunshine duration.