Mélin Frédéric, Zibordi Giuseppe
European Commission-Joint Research Centre, Institute for Environment and Sustainability, Global Environment Monitoring Unit, TP272, Ispra 21027, Italy.
Appl Opt. 2010 Feb 10;49(5):798-810. doi: 10.1364/AO.49.000798.
Regionally specific vicarious calibration coefficients for ocean color sensors have been computed for the visible bands using the normalized water leaving radiance L(wn) collected at sites in the northern Adriatic Sea and Baltic Proper. These coefficients are consistent with those found in oligotrophic waters for the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) and Moderate Resolution Imaging Spectroradiometer (MODIS) . The extension of the vicarious calibration process to the near-infrared is investigated by taking advantage of the field data of aerosol optical thickness coincident with L(wn). Results further confirm the importance of accurately modeling and identifying the aerosol components in atmospheric correction schemes.
利用在亚得里亚海北部和波罗的海收集的归一化离水辐射率L(wn)，计算了海洋颜色传感器在可见波段的区域特定替代校准系数。这些系数与在贫营养水域中针对宽视场海洋观测传感器（SeaWiFS）和中等分辨率成像光谱仪（MODIS）所发现的系数一致。利用与L(wn)同时出现的气溶胶光学厚度的现场数据，研究了替代校准过程向近红外的扩展。结果进一步证实了在大气校正方案中对气溶胶成分进行准确建模和识别的重要性。
