Research Article
A Study of Coupling Parameter Estimation Implemented by 4D-Var and EnKF with a Simple Coupled System
Figure 2
Time series of sensitivities of (a) and (b) with respect to (pink), (green), (black), (dashed-black), (yellow), (blue), and (red). Note that here the sensitivities of and are computed as the ensemble spreads normalized by their climatological standard deviations (i.e., 14.5 and 1.5). Parameters , , , , and are dimensionless while the units of and are and (°C)−1, where is the dimensionless time step.
| (a) |
| (b) |