摘要
通过测量太阳辐射值计算整层大气透过率的方法简单易行且精度高。利用自行研制的整层大气透过率仪测量可见到近红外波段的太阳直接辐射连续光谱,在可靠定标的基础上,推算出实际天气条件下的整层大气光谱透过率。利用Langley-plot方法对整层大气透过率仪进行标定,得到了仪器标定结果和不同时刻整层大气透过率随波长变化的曲线。将计算得到的整层大气透过率与太阳辐射计PGS-100的测量和MODTRAN计算的结果分别进行了比较,发现有较好的一致性,从而证明整层大气透过率仪设计合理,测量数据可靠。
An instrument system for atmospheric transmittance by measuring solar irradiance in the visible and near-infrared spectral range was developed.The solar irradiance spectrum was acquired and the atmospheric transmittance spectrum was obtained by employing the Langley-plot method.The results of the atmospheric transmittance are compared with the measurement data of PGS-100 and MODTRAN outputs respectively. The reliability of the system is thus confirmed.
出处
《大气与环境光学学报》
CAS
2006年第6期179-183,共5页
Journal of Atmospheric and Environmental Optics
基金
国家863计划专题资助
关键词
大气光学
整层大气透过率
太阳辐射
连续光谱
定标
atmospheric optics
atmospheric transmittance
solar irradiance
the sequential spectrum
calibration
