The absorption spectral decomposition of water in Lake Taihu,China(I):the decomposition of absorption due to suspend particulate matter and due to phytoplankton pigment

Based on the data measured in situ in Lake Taihu in October 2008,two models,namely,Mod-4 with five unknown parameters and Mod-5 with two unknown parameters,were developed to decompose the absorption due to suspend particulate matter (SPM) into absorptions due to phytoplankton pigment and non-pigment particulate absorption.The result showed that both of the models were good for the accurate decomposition.But Mod-5 was better than Mod-4 and Mod-5 can be preferentially recommended, which was helpful to develop an appropriable and applicable bio-optical model for retrieval of water quality parameter in Lake Taihu.