Fig. 8

The assimilation results for the ideal test case scenario, but with an increased spatial resolution of the ionospheric field. The results are obtained using the additional spatial correlation. On the top, the ionospheric component is simulated up to SH 10 and on the bottom up to SH 50. In both cases, the left side presents the absolute deviation to the final scale factor \({\mathbf{k}}_{f}\) from the true value of 1, and the associated uncertainty (posterior standard deviation) of the final scale \(\sigma _{{\mathbf{k}}_{f}}\) is shown on the right side