title: [Three wavelengths factor model of chlorophyll concentrations inversion based on different spectral dominating factors for inland lake].
abstract: A hierarchical cluster analysis is applied to the data set of R(rs) spectra. Combing the inherent optical and measured water color characteristics, we determine factors of the variability for each class of R(rs) spectra. The R(rs) measured from Lake Taihu, Chaohu, Dianchi and Three Gorges Reservoir can be divided into three spectrally distinct classes: class 1, class 2 and class 3. Class 1 is associated with water optical property dominated by total suspended matter and phytoplankton. Class 2 is associated with water optical property dominated by phytoplankton. And Class 3 is associated with water optical property dominated by total suspended matter. The three wavelengths factor Chlorophyll a concentration inversion models were developed according to different class water optical characteristics, which means relative error and RMSE are 23.8% and 8.5 mg/m3, and have higher accuracy than the model developed without classification.
authors.affiliation: Key Laboratory of Virtual Geographic Environment, Ministry of Education, Nanjing Normal University, Nanjing 210046, China. ahnushikun@yahoo.com.cn
authors.forename: Kun
authors.initials: K
authors.lastname: Shi
authors.forename: Yun-Mei
authors.initials: YM
authors.lastname: Li
authors.forename: Zhong-Hua
authors.initials: ZH
authors.lastname: Liu
authors.forename: Yi-Fan
authors.initials: YF
authors.lastname: Xu
authors.forename: Xini
authors.initials: X
authors.lastname: Xu
authors.forename: Chuan-Qing
authors.initials: CQ
authors.lastname: Wu
authors.forename: Li
authors.initials: L
authors.lastname: Zhu
mesh_terms: D002681:China; D002734:Chlorophyll / Q000032:analysis*; D016000:Cluster Analysis; D004784:Environmental Monitoring / Q000379:methods*; D005618:Fresh Water / Q000032:analysis*; D008962:Models, Theoretical; D055095:Optics and Photonics; D010777:Photochemistry; D017215:Satellite Communications; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D002734:Chlorophyll