中国不同光气候分区地面日光光谱的观测与分析

发布时间：2018-09-17 08:12

【摘要】：我国地域辽阔,各地光气候有很大区别,为了扩大和提高太阳能与天然光的利用范围及利用效率,采用一种便携式的光谱扫描仪,对我国不同光气候分区的7个代表性城市(昆明、西宁、北京、深圳、南京、南昌和重庆)一天中不同太阳高度角对应时刻的地面直射日光光谱在380~780nm可见光谱段进行了跟踪观测,分析了不同光气候分区城市一天中不同太阳高度角对应时刻的日光光谱变化规律,比较了不同光气候分区城市的日光光谱曲线,总结了日光光谱辐射强度的影响因素。分析表明:不同光气候分区城市一天中不同太阳高度角对应时刻的日光光谱辐射强度不同,但日光光谱功率的分布和走向基本一致,总体呈先上升后下降的趋势,最大峰值出现在475nm附近,380~475nm之间光谱功率分布曲线出现陡升,475~700nm之间曲线有下降趋势但基本平稳,700nm曲线出现了反复的较大起伏;不同光气候分区城市的日光光谱功率分布曲线的分布和走向也基本一致,没有明显的与不同光气候分区直接相关的日光光谱功率分布差异性规律;日光光谱辐射强度与太阳高度角和日面状况密切相关。
[Abstract]:In order to expand and improve the utilization range and efficiency of solar and natural light, a kind of portable spectral scanner is adopted in order to expand and improve the utilization of solar energy and natural light. Seven representative cities with different light climatic zones in China (Kunming, Xining, Beijing, Shenzhen, Nanjing, Nanchang and Chongqing) the direct sunlight spectra of the ground at different solar height corresponding time during the day are observed in the visible spectrum of 380~780nm. The variation of solar spectrum at different solar height angles in cities with different light climates is analyzed, and the solar spectral curves of cities with different light climates are compared, and the influencing factors of solar spectral radiation intensity are summarized. The analysis shows that the solar spectral radiation intensity is different at different solar height angles in cities with different light climates, but the distribution and direction of solar spectral power are basically the same, and the overall trend of solar spectral power increases first and then decreases. The maximum peak value appears in the curve of spectral power distribution between 380 nm and 475 nm near 475nm. The curve between 475nm and 475nm has a tendency to decrease, but the curve of almost steady peak value of 700nm has repeated and larger fluctuation. The distribution and trend of the power distribution curve of the solar spectrum in different urban areas are basically the same, and there is no obvious difference law of the power distribution of the solar spectrum directly related to the different zones of light climate. The solar spectral radiation intensity is closely related to the solar height angle and the solar surface condition.
【作者单位】：重庆大学建筑城规学院山地城镇建设与新技术教育部重点实验室;
【基金】：国家自然科学基金项目(51478060) 中央高校基本科研业务费(106112015CDJXY190002)资助
【分类号】：P182.21

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