Application of Surface Spline Interpolation Method in Parameter Estimation of a PM_2.5 Transport Adjoint Model

Table 2

Error statistics of TE3 and 4 and observations at 49 sites are assimilated in the TEs.

Experiment		K (µg/m^3)		K (µg/m^3)		K(µg/m^3)		K
		Before	After	Before	After	Before	After	Before	After
SSI (TE3)	1.30e-3	30.49	1.06	29.01	0.98	6.33	1.18	13.34%	6.14%
CI (TE3)	2.75e-3	30.49	1.61	29.01	1.35	6.33	1.48	13.34%	6.74%
SSI (TE4)	9.56e-3	53.53	4.37	49.22	4.83	23.91	10.90	39.25%	23.48%
CI (TE4)	1.12e-2	53.53	4.88	49.22	5.35	23.91	11.21	39.25%	29.12%

is the final value of cost function and J₁ is the initial value of cost function. K1 is the MAGEs between simulated values and “observations” in “assimilated cities”. K2 is the MAGEs between simulated values and “observations” in “checked cities. K3 and K4 are the MAGEs and MNGEs between prescribed and inverted IC, respectively.