Johnson B C, Zibordi Giuseppe, Brown Steven W, Feinholz Michael E, Sorokin Mikhail G, Slutsker Ilya, Woodward John T, Yoon Howard W
Appl Opt. 2021 Apr 20;60(12):3380-3392. doi: 10.1364/AO.419766.
The Ocean Color component of the global Aerosol Robotic Network (AERONET-OC) utilizes CE-318 sun photometers modified for above-water radiometry from fixed structures such as oil rigs, lighthouses, and service platforms. Primarily, AERONET-OC measurements allow determination of the water-leaving radiance required for the validation of ocean color satellite data products. One instrument from the AERONET-OC network, identified as AERONET #080, was studied in this work. A laser-illuminated integrating sphere of known radiance enabled determination of the linearity with flux and absolute radiance responsivity at multiple wavelengths within seven of the AERONET #080 filter bands. We compared the results to calibrations from the AERONET facility at the Goddard Space Flight Center of the National Aeronautics and Space Administration and from the Joint Research Centre of the European Commission. These results agree within the estimated mean comparison uncertainty of 1.88 % (=2). We also assessed these results using calibrated lamp-illuminated integrating spheres and observed a spectral dependence to the comparison results that is unexplained.
全球气溶胶机器人网络（AERONET-OC）的海洋颜色组件使用经过改装的CE-318太阳光度计，用于从石油钻井平台、灯塔和服务平台等固定结构进行水上辐射测量。主要而言，AERONET-OC测量可确定验证海洋颜色卫星数据产品所需的离水辐射率。本研究工作对AERONET-OC网络中的一台仪器（编号为AERONET #080）进行了研究。一个已知辐射率的激光照明积分球能够确定AERONET #080滤光带中的七个波段在多个波长下的通量线性度和绝对辐射响应率。我们将结果与美国国家航空航天局戈达德太空飞行中心的AERONET设施以及欧盟联合研究中心的校准结果进行了比较。这些结果在估计的平均比较不确定度1.88%（=2）范围内一致。我们还使用校准的灯照明积分球评估了这些结果，并观察到比较结果存在无法解释的光谱依赖性。
