Fig. 1. Turbidity statistics obtained by buoy observing. (a) Reservoir; (b) Zhejiang coastal water

Fig. 2. R_rc spectra and correlation coefficients. (a) R_rc spectra; (b) correlation coefficients

Fig. 3. Scatter plots of estimated turbidity and measured turbidity. (a)(b) Model based on combination 1; (c)(d) model based on combination 2

Fig. 4. Hourly turbidity changes of the Yangtze estuary and adjacent sea areas, asterisk represents position of ‘Shitang’ tide gauge station. (a)--(h) Turbidity distributions at different times

Fig. 5. Diurnal turbidity changes along longitude. (a) Transect I near Hangzhou bay; (b) transect II near Taizhou

Fig. 6. Hourly turbidity changes of reservoir and adjacent channel region. (a)--(h) Turbidity distributions at different times

Fig. 7. Diurnal turbidity changes inside reservoir, vertical dashed line is boundary of reservoir. (a) Transect III; (b) transect IV

Fig. 8. Monthly mean distributions of turbidity and turbid zone. (a)-(l) Turbidity distributions at different months

Fig. 9. Scatter plots of measured and estimated turbidity after adding random errors into R_rc. (a) 680 nm; (b) 490 nm

Fig. 10. Hourly changes of tidal elevation and turbidity of “Shitang” tide gauge station