Fig. 11

The original deviations between the true and imposed OIMF anomalies (imposed NRMSD) are shown on the left. The deviations between true and theoretically best possible rescaled OIMF anomalies (optimal NRMSD) are illustrated on the right side. Both are shown exemplarily for the test case using a different true OIMF with a spatial oversampling up to SH 45. Dark colors indicate large discrepancies between the true and imposed (respectively, optimal rescaled) OIMF anomalies, and lighter colors accordingly, a good agreement. Both plots do not rely on assimilation results