CAJ | 학술논문

利用渤、黄海407组实测透明度（0．1～18．0 m）与遥感反射率光谱数据，评估了3种透明度半分析遥感反演算法在渤、黄海的适用性，包括基于709 nm 波段、基于560 nm 波段和基于固有光学量准分析算法的透明度半分析算法。结果表明：3种半分析算法均不适用于渤、黄海水体，透明度反演值的均方根误差（RMSE）都大于2．2 m，平均相对误差（APD）都高于68％。其中，基于560 nm 波段的半分析算法反演误差相对较小，RMSE为2．2～4．6 m，APD 为68．0～86．7％。
이용발、황해407조실측투명도（0．1～18．0 m）여요감반사솔광보수거，평고료3충투명도반분석요감반연산법재발、황해적괄용성，포괄기우709 nm 파단、기우560 nm 파단화기우고유광학량준분석산법적투명도반분석산법。결과표명：3충반분석산법균불괄용우발、황해수체，투명도반연치적균방근오차（RMSE）도대우2．2 m，평균상대오차（APD）도고우68％。기중，기우560 nm 파단적반분석산법반연오차상대교소，RMSE위2．2～4．6 m，APD 위68．0～86．7％。
Transparency,usually characterized by the Secchi disk depth ZSD ,is a basic parameter of optical properties of ocean water.Main semi-analytical algorithms for transparency estimation are validated based on 407 in-situ data in the Bohai Sea and Yellow Sea (the measured ZSD is in the range of 0.1 ~18.0 m).The semi-analytical algorithms include those based on remote sensing reflectance at 709 nm,at 560 nm and the quasi-analytical algorithm (QAA)of the inher-ent optical properties.Comparisons between Secchi depth retrievals from semi-analytical algorithms and in-situ measure-ments show that these three algorithms are not applicable to the Bohai Sea and Yellow Sea.The root mean square error (RMSE)is larger than 2.2 m and the average absolute percentage difference (APD)is larger than 68%.The semi-an-alytical algorithm based on remote sensing reflectance at 560 nm shows a better performance with RMSE of 2.2 ~4.6 m and APD of 68.0 ~86.7%,compared to the algorithms based on remote sensing reflectance at 709 nm (RMSE of 10.8~15.9 m and APD of 70.4 ~1 16.3%)and QAA (RMSE of 2.8 ~4.4 m and APD of 73.9 ~1 15.1%).