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

Table 5

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	5.0118×10^−4	1.08499	0.01873	98.27%
CDS	24	6.1274×10^−4	1.16529	0.02102	98.20%