A tentative study of water quality retrieval in low-level-polluted Case II waters using analytical model

The problem of Case II water pollution has been paid more and more attention these years. Although traditional means could provide more accurate measured values, they are greatly limited by its temporal and spatial defects. Therefore, remote sensing technology is introduced in and it has become a hot spot in the study of water environment monitoring. In this study, Guanting Reservoir, which lies between Zhangjiakou (HeBeijing) and Beijing, is selected to be the research object. With the data obtained in situ and in the laboratory, the water quality retrial model is established to calculate the water quality parameters of Guanting Reservoir. Further, combining with the satellite data (CHRIS/Proba), the qualitative distribution of water quality parameters at the whole reservoir region scale is obtained, which could support the quantitative study in the next step with data and theory basis.