Mean sea level (astronomical forcing)

[alejandro@ccb.ufsc.br]

Hi all! I have a doubt related to results of the astronomic model. After forcing my domain with astronomical data obtained from FES 2004 I realized that there are no negative values. The same happens when checking the time series files. I'd like to know if there is something wrong with my model or if MOHID alwais showed positive water level values?
I appreciate any help.
Thank you so much in advance,
Sincerely, Alejandro