Baseline Zuidwestelijke Delta: automatic re-calibration of waquaschelde_nevla-j07_5 with lower weights in the Rupel basin

This report is an extension to the work previously reported by Chu et al. (2019). During the discussion of the results, the suggestion was given to lower the weight of the stations in the Rupel Basin in the cost function that is used in the automatic calibration procedure, and check the influence on the end result.
This report follows up on that suggestion. The weights in the cost function for the water level stations in the Rupel basin are made 16 times smaller. The model is then automatically calibrated on bottom roughness for the entire year of 2007. The result of lowering the weight of the stations in the Rupel basin in the cost function is that (as expected), the error on water levels in the Rupel basin slightly rises by 1-2 cm. The model however performs slightly better from Hemiksem to Walem (also by 1-2 cm). The re-calibrated model shows an unchanged (good) skill representing the salinity and cross-sectional discharge in the Scheldt estuary. As expected, the model performance in the Western Scheldt is unaffected by the change in weights.