Numerical Study on Initial Field of Pollution in the Bohai Sea with an Adjoint Method

Table 2

The change of cost function and MRE after reversion.

Type of pollutant distribution	Initial value of MRE (%)	Final value of MRE (%)	Reduction ration of MRE (%)
Parabolic surface
Up direction	86.3	12.8	85.2
Down direction	96.7	12.2	87.4
Conical surface
Up direction	93.9	12.7	86.5
Down direction	95.1	12.3	87.1