Open AccessRetrieval chlorophyll-a concentration from coastal waters: three-band semi-analytical algorithms comparison and development
Author(s) -
Jun Chen,
Xunhua Zhang,
Wenting Quan
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.009024
Subject(s) - chlorophyll a , eutrophication , algorithm , remote sensing , attenuation coefficient , absorption (acoustics) , chlorophyll , environmental science , attenuation , optics , computer science , physics , geology , chemistry , nutrient , biochemistry , organic chemistry
The objectives of this study are to validate the applicability of a three-band algorithm in determining chlorophyll-a in eutrophic coastal waters, and to improve the model using improved three-band algorithm. Evaluated using two independent data sets collected from the West Florida Shelf, the variation three-band model was found to have a superior performance to both the three-band and modified three-band model. Using the variation three-band algorithm decreased 18% and 56% uncertainty, respectively, from the three-band and modified three-band algorithms. The significantly reduced uncertainty in chlorophyll-a estimations is attributed to effective removal of absorption of gelbstoff and suspended solids and backscattering of water molecules.