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

Table 1

Error statistics of the TEs in Group one before and after assimilation.

Experiment	J300/	(µg/m^3)		(µg/m^3)		(µg/m^3)
		Before	After	Before	After	Before	After	Before	After
SSI (TE1)	9.50e-4	32.81	0.97	29.03	0.89	6.33	1.14	13.34%	6.09%
CI (TE1)	1.96e-3	32.81	1.34	29.03	1.13	6.33	1.43	13.34%	6.66%
SSI (TE2)	1.73e-4	52.57	0.49	49.22	0.36	23.91	7.73	39.25%	14.64%
CI (TE2)	7.60e-4	52.57	1.04	49.22	1.12	23.91	7.87	39.25%	15.17%

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.