| 摘要: |
| 利用林芝国家基准站冬季（2018年12月—2019年2月），CHP1型太阳直接辐射传感器、DFC2型光电式数字日照计、暗筒式日照计3种仪器，在不同天空状况下的测量值，分类进行对比分析。结果表明：3种仪器测量值对比绝对偏差和相对偏差，直接辐射传感器测量值在阴云、多云、晴天比暗筒式日照计低。从大到小的顺序为晴天＞阴云＞多云。DFC2型光电式数字日照计仅“晴天”测量值比暗筒式日照计高，其余则低。从大到小顺序为晴天＞多云＞阴云；3种仪器测量值可以相互替代，取消人工观测仪器后，日照资料可以合并使用。 |
| 关键词: 天空状况；DFC2型光电式数字日照计；日照时数；测量值 |
| DOI： |
| 投稿时间：2019-05-03 |
| 基金项目:山洪地质灾害气象防治保障工程2019年西藏建设项目（201822）-自动日照计 |
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| Comparison of three kinds of sunshine measuring instruments under different sky conditions |
| YIXI Zhuoma,RAN Guanghui,BAI Yuxuan |
| (Tibet Forest City Meteorological Bureau, Linzhi 860000 , China;Tibet Zuogong County Meteorological Bureau, Zuogong 850000 , China) |
| Abstract: |
| In winter of Linzhi National Reference Station(December 2018-February 2019), three kinds of instruments were used, namely, the CHP1 solar direct radiation sensor, the DFC2 photoelectric digital sunshine meter, and the dark tube sunshine meter, which were measured under different sky conditions, and were classified for comparative analysis. The results show that the three kinds of instruments measure the absolute deviation and relative deviation, and the direct radiation sensor measures the cloudy cloud, cloudy and sunny day lower than the dark tube sunshine meter. The order from large to small is sunny＞cloudy＞cloudy. The DFC2 type photoelectric digital sunshine meter is only "sunny" and the measurement value is higher than that of dark tube sunshine, while the rest is low. From large to small, the order is sunny＞cloudy＞cloudy; The measurements of the three instruments can be replaced with each other. After the manual observation instruments are cancelled, the sunshine data can be combined. |
| Key words: sky condition； DFC2 type digital sunshine meter； sunshine hours； measurement value |
