DFC2型光电式数字日照计与暗筒式日照计对比分析

Comparative analysis on DFC2 photoelectric digital sunshine recorder and dark-tube sunshine recorder

文章基于2019-01/06日照市3个国家站DFC2型光电式数字日照计与暗筒式日照计观测的日照时数,利用差值与相对差值、线性趋势等统计方法,对比分析了光电式数字日照计与暗筒式日照计逐月、逐日、逐时以及在不同气象条件下的日照时数差异。结果表明:光电式数字日照计日照时数较暗筒式日照计略偏少,2者数据一致性较好;光电式数字日照计由于仪器分辨力高、感光灵敏度高和人为因素影响小等优势,在日出和日落时段,能更客观地反映日照变化情况。研究结果为光电式数字日照计运行维护、资料统计及相关应用研究提供了参考依据。

Based on the sunshine duration observed by using DFC2 photoelectric digital sunshine recorder and dark-tube sunshine recorder from 3 national stations in Rizhao city from January to June of 2019,and by use of the statistical methods such as difference value,relative difference value and linear trend,etc,this paper makes a comparative analysis of the sunshine duration difference between the photoelectric digital sunshine recorder and dark-tube sunshine recorder,which observed on a monthly,daily and hourly basis respectively and under different meteorological conditions.It is concluded that the sunshine duration given by photoelectric digital sunshine recorder is slightly less than that by dark-tube sunshine recorder and relatively better consistency of data can be obtained by the two.The photoelectric digital sunshine recorder,by virtue of its advantages such as high resolution,high sensitivity to light and being less affected by human factors,can be used to reflect the variations of sunshine more objectively during sunrise and sunset periods.The research results can provide a reference for the operation,maintenance,data statistics and relevant applied researches of photoelectric digital sunshine recorder.