摘要
为填补我国现有气象业务站网中地基太阳光谱辐射观测的空白,采用国产自校准式高光谱辐射观测系统,分别于2019年和2022年在内蒙古自治区呼伦贝尔市鄂温克族自治旗开展了两次外场试验,试验结果表明,该系统辐射观测数据的月缺测率小于1%,平均无故障工作时间达到有效工作时间的96.5%,显示出其在恶劣户外环境下的良好稳定性。将该系统与宽光谱辐射表的对应产品进行比较,得到:紫外辐射、光合有效辐射、总辐射和直射辐射产品的线性拟合系数分别为0.95、0.97、0.75和0.80;与日本EKO公司高光谱辐射仪产品相比,高光谱直接辐照度的线性拟合系数为97%;与已知反射率的靶标对比,高光谱反射率产品的偏差低于0.5%。这些结果表明,国产高光谱辐射观测系统运行稳定,其数据产品精度与国际先进太阳高光谱观测产品相当,能够为完善我国地基太阳辐射观测网以及开展气象卫星光学载荷产品的真实性检验提供有力支持,进而显著提升区域气象探测能力。
To fill the gap in ground-based solar radiation observations in the existing meteorological business station network in China,we conducted two field experiments in Ewenki Autonomous Banner,Hulunbuir,Inner Mongolia in 2019 and 2022,using a domestic self-calibrating hyperspectral radiometer system.The results show that the monthly missing data rate of the system is less than 1%,and the mean time between failures reaches 96.5%of the effective working time,demonstrating its good stability in harsh outdoor environments.Compared with the corresponding products of broadband radiometers,the linear fitting coefficients of ultraviolet radiation,photosynthetically active radiation,total radiation,and direct radiation are 0.95,0.97,0.75,and 0.80,respectively.The linear fitting coefficient of hyperspectral direct irradiance of the proposed hyperspectral radiometer system is 97%compared with the products of the Japanese EKO hyperspectral radiometer,and the deviation of hyperspectral reflectance from the reference reflectance is less than 0.5%.These results indicate that the domestic hyperspectral radiometer system operates stably,and its data product accuracy is comparable to that of international advanced solar hyperspectral observation products.It can provide strong support for improving China’s ground-based solar radiation observation network and validating the products of meteorological satellite optical payloads,thereby significantly enhancing regional meteorological detection capabilities.
作者
马云飞
郭雅凯
邵长亮
刘丽莹
李峰
Ma Yunfei;Guo Yakai;Shao Changliang;Liu Liying;Li Feng(Meteorological Observation Center,China Meteorological Administration,Beijing 100081,China;Key Laboratory of Urban Meteorology,China Meteorological Administration,Beijing 100089,China;Meteorological Bureau of Qinglong Manchu Autonomous County,Qinhuangdao 066500,Hebei,China;Henan Provincial Meteorological Bureau,Zhengzhou 450003,Henan,China;China Aerospace New Meteorological Technology Company Limited,Wuxi 214000,Jiangsu,China)
出处
《光学学报(网络版)》
2025年第16期82-93,共12页
Acta Optica Sinica(Online)
基金
中国气象局城市气象重点开放实验室开放基金(LUM-2024-10)
河南省自然科学基金(242300421367)
关键词
太阳光谱
高光谱辐射
观测试验
比较评估
solar spectrum
hyperspectral radiation
observational experiment
comparative evaluation
