Improving the Distributed Hydrological Model Performance in Upper Huai River Basin: Using Streamflow Observations to Update the Basin States via the Ensemble Kalman Filter

Figure 8

Comparison of the RMSE (15) for the estimated surface runoff storage () on 82 HRUs by EnKF and EnOL with varying (a) slope steepness, (b) soil category, and (c) land cover. S-1, S-2, S-3, S-4, S-5, S-6, and S-7 are the seven types of soil (Table 1). RICE, AGRC, FRST, SESB, and MESQ represent the land cover of rice, mixed agriculture, mixed forest, the Sesbania, and honey mesquite, respectively. The solid black line is the 1 : 1 line.

(a)

(b)

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