Some Aspects of Sensitivity Analysis in Variational Data Assimilation for Coupled Dynamical Systems

Table 1

Relative errors in energy norm (subscript at parameters denotes the nondimensional time unit).

	Parameter variations in percent of unperturbed value
	1%	−1%	5%	−5%	10%	−10%
	0.1273	0.1266	0.2871	0.2796	0.4081	0.3890
	0.0584	0.0583	0.1312	0.1300	0.1866	0.1833
	0.1663	0.1689	0.3617	0.3202	0.5004	0.5742
	0.0705	0.0704	0.1583	0.1569	0.2250	0.2210