Estimation of Open Boundary Conditions Based on an Isopycnic-Coordinate Internal Tidal Model with Adjoint Assimilation Method

Table 3

Statistics of the errors before assimilation (BA) and after assimilation (AA). The values in parentheses in the first column are the optimal numbers of independent points and the unit of the errors is cms⁻¹.

Distributions	𝑢-vector difference			𝑣-vector difference
	BA	AA	1-AA/BA (%)	BA	AA	1-AA/BA (%)
1 (2)	2.65	0.19	92.83	0.92	0.17	81.52
2 (4)	2.72	0.40	85.29	0.85	0.60	29.41
3 (5)	1.45	0.07	95.17	0.32	0.12	62.50
4 (9)	0.43	0.19	55.81	0.41	0.11	83.17
5 (13)	0.37	0.05	86.49	0.18	0.06	66.67
6 (17)	0.27	0.20	25.93	0.17	0.13	23.53