A semi-analytical algorithm for deriving the particle size distribution slope of turbid inland water based on OLCI data: A case study in Lake Hongze

The particle size distribution (PSD) slope (ξ) can indicate the predominant particle size, material composition, and inherent optical properties (IOPs) of inland waters. However, few semi-analytical methods have been proposed for deriving ξ from the surface remote sensing reflectance due to the vari...

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Bibliographic Details
Published in:Environmental pollution (1987) 2021-02, Vol.270, p.116288, Article 116288
Main Authors: Lei, Shaohua, Xu, Jie, Li, Yunmei, Li, Lin, Lyu, Heng, Liu, Ge, Chen, Yu, Lu, Chunyan, Tian, Chao, Jiao, Wenzhe
Format: Article
Language:English
Subjects:
Algorithms
Back scattering slope
Chlorophyll - analysis
Environmental Monitoring
Lake Hongze
Lakes
OLCI
Particle Size
PSD slope
Turbid inland waters
Water - analysis
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Summary:The particle size distribution (PSD) slope (ξ) can indicate the predominant particle size, material composition, and inherent optical properties (IOPs) of inland waters. However, few semi-analytical methods have been proposed for deriving ξ from the surface remote sensing reflectance due to the variable optical state of inland waters. A semi-analytical algorithm was developed for inland waters having a wide range of turbidity and ξ in this study. Application of the proposed model to Ocean and Land Color Instrument (OLCI) imagery of the water body resulted in several important observations: (1) the proposed algorithm (754 nm and 779 nm combination) was capable of retrieving ξ with R2 being 0.72 (p 
ISSN:0269-7491
1873-6424
DOI:10.1016/j.envpol.2020.116288