clamped open boundary condition

General scientific issues regarding ROMS

Moderators: arango, robertson

Post Reply
Message
Author
iwaking
Posts: 5
Joined: Thu Nov 07, 2019 6:24 pm
Location: USA

clamped open boundary condition

#1 Unread post by iwaking »

Dear ROMS community,

I currently have a regional simulation with strongly forced tide at one side of the four boundaries. At that side, I am specifying clamped OBC (i.e. specified) for zeta, ubar, vbar, u, v, T, and S in my boundary file. I have v==0.

Then, after the ROMS run was finished, I checked the values of different variables at that particular boundary in the ROMS output. All variables but the u velocity match the input in the boundary file. What I cannot understand is that why u does not match the corresponding value in the boundary file even though a clamped OBC for M3 is prescribed.

The figure below shows the comparison between boundary-forced u and the ROMS-outputted boundary values (both at the surface). The horizontal axis is days. I would appreciate your thoughts/advice on the cause of this.

Thanks and regards,
Kevin
fig.jpg

Post Reply