Modifying Covariance Localization to Mitigate Sampling Errors from the Ensemble Data Assimilation

Figure 1

(a) shows the predecessors of the model component 28, the green region, blue region, and yellow region within the different localization radii. (b) and (c) show schematic diagrams of the observations used in the localization method from the i-th grid point to the (i+1) th grid point. For each grid point (gray dots, the analyzed point is red). The localization region is drawn (red circle) and only those observation points (red pentacles) are included in the analysis.

(a)

(b)

(c)