A Study of the Transport of Marine Pollutants Using Adjoint Method of Data Assimilation with Method of Characteristics

Table 7

The results of the adjoint model using CFD and CDS.

Method	Time step size (h)	Relative magnitude of the cost function	Mean absolute error of observation points
			Before assimilation; (mg/L)	After assimilation; (mg/L)	Rate of decline
CFD	48	7.5274×10^−4	0.79497	0.01667	97.90%
CDS	24	1.7942×10^−3	0.62949	0.01960	96.89%