黄渤海悬浮颗粒物散射特性研究

摘要

【目的】研究悬浮颗粒物的散射特性，用以描述水体固有光学特性。【方法】利用2014年11月黄渤海海区航测数据，分别选取555 nm 和532 nm 作为参考波长，建立悬浮颗粒物散射及后向散射的光谱模型，并对模型拟合效果进行检验；此外，还建立了悬浮颗粒物散射参数与水体组分浓度的关系模型。【结果】模型验证结果表明：光谱模型的平均相对误差绝对值(MAPE)分别在60%和35%以内；散射参数与悬浮颗粒物质量浓度模型MAPE 的最小值仅为15.0%。【结论】黄渤海颗粒物散射特性主要由非藻类颗粒物主导。%Objective]The scattering properties of suspended particulates were analyzed to de﹣scribe important inherent optical properties of water.[Methods]In this study,light scattering properties of suspended particulate matter in Yellow Sea and Bohai Sea were investigated in November 2014.Based on these data,spectrum models of the scattering and backscattering co﹣efficient of suspended particulate matter were developed using 555 nm and 532 nm as the refer﹣ence bands.In addition,estimation models of scattering parameters were developed using con﹣centrations of water constitutes.[Results]The model performance assessments indicated that the mean absolute percentage errors (MAPE)of spectrum models were within 60% and 35%. Among the estimation models of scattering properties using concentrations of water consti﹣tutes,those models using concentrations of suspended particulate matter are the best,with the minimum MAPE of 15%.[Conclusion]These results imply that non-algal particles may be the dominant component controlling the scattering properties of suspended particulate matter in this region.