A vertical phytoplankton model is developed, combining with the analyses of the Delft3D model.
The bloom development is investigated from the physical control: vertical stability and critical depth.
Vertical stability threshold is strongly related to specific growth rate, loss rate, and euphotic depth.
Critical depth is closely linked with light availability, and indirectly associated with suspended sediment.
Significant correlations are established between chlorophyll a and phytoplankton biomass.