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Progress in Earth and Planetary Science
Fig. 4 | Progress in Earth and Planetary Science

Fig. 4

From: Precision and convergence speed of the ensemble Kalman filter-based parameter estimation: setting parameter uncertainty for reliable and efficient estimation

Fig. 4

Time series of the analysis ensemble spread for radar reflectivity. The ensemble spread was defined as the mean sample standard deviation of the radar reflectivity averaged over model grids where the observations to be assimilated existed. Open squares and open circles indicate the spreads for the first guess and the analysis, respectively. The origin of the time axis corresponds to T = 3 h for the nature run

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