Journal of Atmospheric and Environmental Optics ›› 2020, Vol. 15 ›› Issue (4): 251-260.

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Comparative Analysis of Observed Values Based on Three Different Types of Sunshine Detectors

DING Li1, LIU Shuangxi1, HU Jingbo1, QIU Jie1, WANG Lei1, YU Xufeng2   

  1. 1 Huzhou Meteorological Bureau, Huzhou 313000, China; 2 Deqing Meteorological Bureau, Huzhou 313000, China
  • Online:2020-07-28 Published:2020-07-23

Abstract:

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-August 2018 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.

Key words: automatic sunshine detector, Jordan sunshine recorder, sunshine duration, relevance analysis, relative bias

CLC Number: