两种不同类型日照仪器观测数值的对比及差异分析

Comparison and Difference Analysis of the Observed Values of Two Different Types of Sunshine Instruments

摘要: 本文利用哈密市6个站2019年1~6月DFC2型光电式数字日照计与暗筒式日照计日照平行观测资料，分析了两个序列数据的完整性、一致性及其差异。结果表明：哈密6个台站人工日照时数略大于自动观测，随着海拔高度的增长人工观测与自动观测值越接近，并通过显著性检验；二者间相关性较好，尤其小时值相关性更好；两个序列数据完整性很好，数据采集成功率高；小时数据差值有明显日变化规律，差值的日变化无明显地域差异；两种观测方式因仪器观测原理不同，观测环境的天气条件影响，以及观测员的观测习惯等因素，造成了观测数据有差异。

Abstract: This article uses six stations’ Parallel observation data in Hami City from January to June 2019, which is collected by DFC2 photoelectric digital sunshine meter and Jordan sunshine recorder, an-alyzed the completeness, consistency and differences of the two series data. The results show that the sunshine hours recorded by manually of the 6 stations in Hami are slightly larger than the au-tomatic observations records. Along with the altitude increases, manually record sunshine hours are closer to the automatic observations’ and pass the significance test; correlation between these two results is good, especially on hourly observation record. The two series data integrality is good, and success rate of data collection is high; hourly data difference has obvious diurnal changes, and the diurnal changes of the difference have no obvious regional differences. Due to two instruments principles are different, weather conditions of observation environment, as well as the observation habits of observers and other factors, which have caused differences of observation data.