中国北纬30°地面太阳光谱观测  

Surface Solar Spectral Observation Along 30°N in China

作　　者：普多旺 拉瓜登顿[1] 盛敏 刘娟 王倩 王萌萌 周毅 卢汉宇 措加旺姆[1] 诺桑[1] PU Do-wang;Lagba Tunzhup;SHENG Min;LIU Juan;WANG Qian;WANG Meng-meng;ZHOU Yi;LU Han-yu;Tsoja Wangmu;Norsang Gelsor(Solar UV Lab,Tibet University,Lhasa 850000,China)

机构地区：[1]西藏大学太阳紫外线实验室,西藏拉萨850000

出　　处：《光谱学与光谱分析》2023年第6期1881-1887,共7页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(41867041);西藏自治区科技厅重大专项(XZ201901-GA-10);西藏大学研究生项目(2018-GSP-013)资助。

摘　　要：利用国际标准RAMSES光谱仪和CMP11型太阳总辐射仪,在2019年至2020年期间对中国北纬30°区域8个城市(西藏阿里、日喀则、拉萨、林芝、成都、武汉、杭州、上海)进行了地面太阳辐射的观测研究。观测结果表明在中国北纬30°区域,西藏总体太阳光谱不仅强度上远远高于低海拔的内地城市,而且光谱曲线在形态特征上比低海拔更光滑,吸收弱。观测期间西藏最大地面单色太阳光谱强度可达2018.48 mW·(m^(2)·nm)^(-1)(阿里,2020年6月21日),同纬度其他内地城市最大地面单色太阳光谱强度仅为756.22 mW·(m^(2)·nm)^(-1)(成都,2019年11月03日);西藏地面太阳光谱中所含紫外光谱(280~400 nm)比内地低海拔高出约1.5倍以上,强烈的紫外线对西藏生态和人体健康产生相应影响;观测期间发现拉萨地面太阳光谱强度约为成都的1.5~1.7倍;阿里地面太阳光谱强度比上海高出约0.2倍。观测结果为北纬30°区域太阳能资源的利用和生态环境等研究提供实地太阳光谱数据;对2020年夏至发生的日食现象进行了太阳光谱的同步观测研究,发现日食期间拉萨、阿里辐射能量损失均超过95%。分析了云、气溶胶等大气因子对太阳光谱、太阳总辐射的影响。研究表明西藏阿里等地夏季太阳总辐射值频频超过太阳常数。We conduct observation and research on ground solar radiation using the international standard RAMSES spectrometers and CMP11 global solar radiometers for 8 cities(Ngari,Shigaze,Lhasa,Nyingchi,Chengdu,Wuhan,Hangzhou,Shanghai)along the 30°N latitude region of China during 2019 and 2020.Observation results show that along the 30°N region in China,Tibet’s overall solar spectrum intensities are not only much higher than that of low altitude inland cities,but also the spectral curves are smoother and less absorbed than that at low altitude in terms of morphological characteristics.During the observation period,the maximum monochromatic solar spectral intensity on the ground in Tibet reached 2018.48 mW·(m^(2)·nm)^(-1)(Ngari,Jun.21,2020),and the maximum monochromatic solar spectral intensity in other mainland cities at the same latitude is only 756.22 mW·(m^(2)·nm)^(-1)(Chengdu,Nov.3,2019);The ultraviolet spectra(280-400nm)contained in the ground solar spectra of Tibet is about 1.5 times higher than that of the low altitude in the mainland.The strong ultraviolet has a corresponding impact on the ecology and human health in Tibet;It is found that during the observation,the ground solar spectral intensity of Lhasa is about 1.5~1.7 times than that of Chengdu;The ground solar spectral intensity of Ngari is about 0.2 times higher than that of Shanghai.The observation results provide field solar spectral data for the utilization of solar energy resources and ecological environment research in the 30°N latitude region;We conduct observational studies synchronously to the solar spectrum of the solar eclipse during the summer solstice in 2020.It is found that the radiation energy loss in Lhasa and Ngari during the solar eclipse is more than 95%.The effects of atmospheric factors such as clouds and aerosols on the solar spectrum and total solar radiation are analyzed.The work shows that the global solar radiation value in Ngari and other places in Tibet frequently exceeds the solar constant during the summers.

关 键 词：西藏 北纬30°N 太阳光谱 观测 日食 

分 类 号：P182.3[天文地球—天文学]