Liang Shu-ying, Yang Chun-yu
Guang Pu Xue Yu Guang Pu Fen Xi. 2015 Dec;35(12):3475-9.
The territory of China is vast, so the daylight climates of different regions are not the same. In order to expand theutilization scope and improve the utilization efficiency of solar energy and daylight resources, this article observed and analyzed the ground daylight spectra of China's different light climate partitions. Using a portable spectrum scanner, this article did a tracking observation of ground direct daylight spectra in the period of 380-780 nm visible spectrum of different solar elevation angles during one day in seven representative cities of china's different light climate partitions. The seven representative cities included Kunming, Xining, Beijing, Shenzhen, Nanjing, Nanchang and Chongqing. According to the observation results, this article analyzed the daylight spectrum changing law, compared the daylight spectrum curves of different light climate partitions cities, and summarized the influence factors of daylight spectral radiation intensity. The Analysis of the ground direct daylight spectra showed that the daylight spectral radiation intensity of different solar elevation angles during one day of china's different light climate partitions cities was different, but the distribution and trend of daylight power spectra were basically the same which generally was first increased and then decreased. The maximum peak of spectral power distribution curve appeared at about 475 nm, and there were a steep rise between 380-475 nm and a smooth decline between 475-700 nm while repeatedly big ups and downs appearing after 700 nm. The distribution and trend of daylight power spectra of china's different light climate partitions cities were basically the same, and there was no obvious difference between the daylight spectral power distribution curves and the different light climate partitions. The daylight spectral radiation intensity was closely related to the solar elevation angle and solar surface condition.
中国地域辽阔，不同地区的日光气候各不相同。为了扩大太阳能和日光资源的利用范围并提高其利用效率，本文对中国不同光气候分区的地面日光光谱进行了观测与分析。本文使用便携式光谱扫描仪，在中国不同光气候分区的七个代表性城市，对一天中不同太阳高度角下380 - 780nm可见光谱范围内的地面直射日光光谱进行了跟踪观测。这七个代表性城市包括昆明、西宁、北京、深圳、南京、南昌和重庆。根据观测结果，本文分析了日光光谱变化规律，比较了不同光气候分区城市的日光光谱曲线，并总结了日光光谱辐射强度的影响因素。地面直射日光光谱分析表明，中国不同光气候分区城市一天中不同太阳高度角下的日光光谱辐射强度不同，但日光功率谱的分布和趋势基本相同，总体上先增大后减小。光谱功率分布曲线的最大峰值出现在约475nm处，在380 - 475nm之间有一个陡峭上升，在475 - 700nm之间有一个平缓下降，而在700nm之后出现多次大幅起伏。中国不同光气候分区城市的日光功率谱分布和趋势基本相同，不同光气候分区的日光光谱功率分布曲线之间没有明显差异。日光光谱辐射强度与太阳高度角和太阳表面状况密切相关。
