Ocean Modeling Discussion

Nothing too complicated, I'm just trying to do post processing, such as computing SST gradients, divergence, curls, vorticity, etc. Previously, I've assumed constant metric resolution (20km) and just calculated derivatives using center finite difference method for the interior points and either ...

Thank you Kate. So pm and pn that correspond to interior rho-points can be used as is, but extra precaution has to be taken at the boundaries? I can now see how to create derivatives using pm and pn with u- and v-grids. Somehow, rho-grid is still rather fuzzy. Do you think it would be okay to ...

Hi there, I'm hoping to calculate derivatives with pm and pn. Given that dx=1/pm and dy=1/pn (metric distance between grid points), why is pm and pn still on rho-grid? So for instance, is pm(i,j)=2/(x(i+1,j)-x(i-1,j))? How are the boundaries handled? Thank you so much for all the help. Cheers, Dian

Thank you for pointing out that ROMS only interpolate in time and not extrapolate it. That would really help me prevent an error there. Another quick question, as I set up the forcing files, I realize that while I have individual monthly files for winds and SST, I only have monthly climatological ...

Fantastic. Thank you so much.

Cheers,
Dian

Hi Kate,

Thank you for replying. I do have the fields for each individual months, it's not generic. So would ROMS automatically interpolate between each relevant two months to provide the forcing and boundary conditions that is appropriate for each day? Thanks.

Cheers,
Dian

Hi, I'm trying to run a simulation with monthly NCEP winds and monthly boundary conditions for the time period 1980/1/1 - 1990/12/31. Since the actual year, month and day is important, I thought it might be best to use TIME_REF=-2 and DSTART=2444240 (Julian day for Jan. 1, 1980). For the initial ...

Hi all! I'm having some problems with restarting ROMS again. I'm running a 10 year spinup, and in the first year (say Oct. 2002), the model had been accidentally aborted. I tried to restart the model from where it was aborted (Oct. 2002, NRREC=60) and it worked. However, the output wasn't written to ...

Thank you!
I found the index that was needed for NRREC. And I also used the history file instead of the restart file so that the time index corresponded. Thanks again.

Hi all! I was trying to do a 5 year spin-up run on ROMS when it stalled about 10 months into the run. I would like to restart the run from the last record before it stalled (day 297.5 in this case). I have the restart file, but would I have to convert this to an initial file to restart the run? What ...

Hi all! I tried using "make" for ROMS 2.2 and it worked perfectly well. However, when I used "make" for ROMS 3.0, it gave me this error. make: svnversion: Command not found I have made sure that "make" version 3.81 was used, but somehow, ROMS 3.0 doesn't recognize the "make" command. Could anyone ...

Hi! Could someone advise me where can I start looking and make changes to get ROMS to run for with the usual climatology and boundary files, but with a different surface forcing file? I have 12-hourly surface forcing for 3 months, but the normal climatology files have time_step=12. ROMS gave me an ...