Dear ROMS users,
I'm using the upwelling test case in a 4-wall basin with wind forcing but no tides. There are some adjustment I made according to my problem, like the 4-wall boundaries. I expect there are variations in free surface during the run but I got zeros for zeta all through the time. I had no clue which setup in my model could cause this. I have the cpp options file attached here. Could anyone help me with this?
Thanks a lot in advance!
Shuang
zeta output all zeros
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Zhang.Shuang
- Posts: 5
- Joined: Thu Jul 02, 2009 5:45 pm
- Location: Applied Physics Lab. Univresity of Washington
zeta output all zeros
- Attachments
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upwelling.h- (2 KiB) Downloaded 267 times
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- ocean_upwelling.in
- (64.7 KiB) Downloaded 241 times
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- ana_grid.h
- (33.74 KiB) Downloaded 247 times
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- ana_smflux.h
- (13.58 KiB) Downloaded 243 times
Last edited by Zhang.Shuang on Thu Apr 29, 2010 1:51 am, edited 1 time in total.
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linzhenhua
- Posts: 64
- Joined: Mon Oct 17, 2005 2:02 am
- Location: Institute of Oceanology,Chinese Academy of Sciences
Re: zeta output all zeros
I do not know whether the files you uploaded are exactly the files you are using for the numerical simulation.
In your ocean_upwelling_2.in file, you set your project name UPWELLING, so it will try to use upwelling.h, not upwelling_2.h. I'm not sure whether this is the reason for the problem.
In your ocean_upwelling_2.in file, you set your project name UPWELLING, so it will try to use upwelling.h, not upwelling_2.h. I'm not sure whether this is the reason for the problem.
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Zhang.Shuang
- Posts: 5
- Joined: Thu Jul 02, 2009 5:45 pm
- Location: Applied Physics Lab. Univresity of Washington
Re: zeta output all zeros
Thank you for your reply. Yes, these files are exactly the files I used in the run. I changed their names to distinguish them from the original upwelling files in my computer. It maybe a bit confusing so I changed their names in my original post.linzhenhua wrote:I do not know whether the files you uploaded are exactly the files you are using for the numerical simulation.
In your ocean_upwelling_2.in file, you set your project name UPWELLING, so it will try to use upwelling.h, not upwelling_2.h. I'm not sure whether this is the reason for the problem.
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linzhenhua
- Posts: 64
- Joined: Mon Oct 17, 2005 2:02 am
- Location: Institute of Oceanology,Chinese Academy of Sciences
Re: zeta output all zeros
Hi
Just have a close look at your set up. Please notice the definition of NDTFAST:
! NDTFAST Number of barotropic time-steps between each baroclinic time
! step.
So it should be an integer. In your configuration file you set it to 0.5, this is not right. I change it to 5, and it works.
Also notice that in your case ,the largest surface momentum flux is -1.309592837245419E-005, which is too small for a test case in my opinion, though this has nothing to do with your zero surface elevation error.
Just have a close look at your set up. Please notice the definition of NDTFAST:
! NDTFAST Number of barotropic time-steps between each baroclinic time
! step.
So it should be an integer. In your configuration file you set it to 0.5, this is not right. I change it to 5, and it works.
Also notice that in your case ,the largest surface momentum flux is -1.309592837245419E-005, which is too small for a test case in my opinion, though this has nothing to do with your zero surface elevation error.