Ocean Modeling Discussion

I got compiling errors for the Revision 1122 using the same makefile, and it was fixed in the Revision 1123 as Hernan said. For Revision 1122, I have to use Build_ROMS.sh, which works fine, but not "gmake -f makefile"

Hernan, I understand what you are talking about. I did not post on this site doesn't mean I am not doing it. Nobody reports a bug also doesn't mean there is no bug in ROMS. I tried to solve my problem quicker by posting it on ROMS forum since I thought some ROMS experts would easily tell me what's w...

I checked your NetCDF file and noticed that you have an interpolation problem in the bottom left corner in variables Uwind and Vwind . However, this is not your problem. It is always a good idea to plot the fields if there is a problem reading input NetCDF files. This should be the first step in di...

Hernan,

I compared my atmospheric forcing file with frc_bulk.cdl in Data/ROMS/CDL directory. I found that there are more attributes (missing_value, field) for each of variable in my forcing file. Should this caused the problem?

Thanks

AJ

Hernan, Thanks a lot for your comments. There is no error message directly written from ROMS except error message of "task 0: Segmentation fault" in the IBM system runtime error file, so I do not know what's wrong with my surface forcing NetCDF file. The surface forcing file is attached, c...

Yes. We are developing operating forecast systems (OFS), and all OFS have river forcing, tidal forcing, open boundary forcing, and atmospheric forcing from NetCDF files. For the same forcing files, the older version (v90) of ROMS runs well, but the newer version (v340) stops after reading river forc...

I cannot attach my files in the attachment. it says that "the extension err is not allowed" when I did the following, 1. browse the file I tried to attach 2. click on add the file 3. submit I use to be able to do it. I forget how to do it now since it's been a while I did not use it. Thanks.

Hello, ROMS Modelers, We are developing operational forecast system using ROMS under our environment. I tried to run two different versions of ROMS on same supercomputer of IBM power 6 (AIX OS) with exactly same CPP options and same forcing files, The two versions are, svn: $LastChangedRevision: 90 ...

I read all messages about this topic, but I am lost at the end. For my understanding, there are two kinds of wind forcing formats for ROMS: one is single point wind time series (1-D) and the other is spatial variation wind forcing (2-D). For 1-D wind, the u and v are true east and north winds, ROMS ...

For my understanding, you need activate CPP Option "ATM_PRESS" so that ROMS declares arrays of PairG and Pair and also read in air pressure from forcing file if ANA_PAIR is not activated. Since Pair and PairG are declared in Module mod_forces, I think the statement of "USE mod_forces&...

Thank you all for your replies. By following Kate's suggestion, I think I was able to put the river discharges correctly. For verification, I set my background salinity is 35 everywhere (in initial file), the salinity values are zeros at river input locations. I saw the freshwater flowed in near the...

Hi, Kate and Gerardo, Thanks a lot for your replies. I did what Gerardo told me to do, and I got the same error message. Then I go to google to search the error message, found out that the same error message came up mostly with ifort 9.0 compiler. So I switched to ifort 8.0. ROMS3.0 was successfully...

Hello, All, I tried to compile ROMS3.0 on my Linux workstation using Intel Fortran Compiler 9.0 for Linux (ifort) without MPI (serial) . After running: make or gmake I got the following error message, IPO link: can not find "(" ifort: error: problem during multi-file optimization compilati...

Hi, Modelers, I use ROMS3.0 to do tidal simulation with constant T=15 and S=35, but I want to include some rivers. I am confused about how to specify river inflows for ROMS3.0. There are several rivers in my model domain. I like to let the freshwater flow in by providing discharges, temperature=15 a...

I think CPP option "PERFECT_RESTART" is very important for developing operational forecast systems since forecasts start from a restart file generated from previous nowcasts and we don't expect to get any oscillation at the forecast start time. I tested this option in my Tampa Bay applicat...

Thanks a lot. I found netcdf.mod file in the system, and I copied the typesize.mod of my linux system to the NCEP's IBM system, so compiling is fine now.
Thanks again.

I downloaded the latest version of ROMS3.0 today, and tried to compile it on my Linux workstation using ifort compiler (serial run without MPI). There are error messages caused by "USE netcdf" in mod_netcdf.f90. I compared mod_netcdf.F of the latest version with the previous version, and f...

Hi, everyone, I recently downloaded the latest version of ROMS 3.0, I found that there are two netcdf related files (netcdf.mod and typesize.mod) required. these two files weren't required by the version back to June 1, 2007. I wonder where to get these two files, and what's the purpose? For my opin...

Hi, John, Thanks a lot for your quick anwsers for my question. In my application, I set DSTART and TIDE_START as you said as, DSTART=151.0 for Days of Jun1 1, 1990 from Jan. 1, 1990 TIDE_START=0.0 I assumed the model simuated beginning from June 1, 1990 in this way. However, The model simulation tim...

Hi, John,
Thanks a lot. I tried LOGDRAG option with z0b=0.02 and 0.002, The model blew up at almost same time (about 3 hour simulation). By the way, I use dt=30s, and Ndtfast=30. Will it be helpful to increase vertical layer (currently I use 11 vertical layers) or reduce dt?

AJ

I am applying ROMS3.0 (minimum water depth 10cm with wet-dry option) in Tampa Bay tidal simulation. It ran well for 30 day simulation, but the elevation amplitude is too larger than the tidal prediction in the upper bay. Therefore, I tried to increase bottom friction by changing RDRG2 since I use qu...