The experiment setting is similar to Twin Experiment 4, but where EnKF-GS is run over three different periods: run 1: Cold Start - 01/05/2015, run 2: 01/05/2015-01/10/2015, and run 3: 01/10/2015 - 01/01/2016. Moreover, run 2 and run 3 started with the last Kalman gain from the last analyses in the previous runs. In this way, unlike in Twin Experiment 4, the smoothing of the Kalman gain really took place.
Results
At assimilation station
RMSE over 51 analyses
At all stations