Ocean Modeling Discussion

Hi John,

Thanks for replying.
I checked the step3d_t.f90 in build directory and 'tracer_test' piece is present there.

The rhs term (source or decay) does not seem to work. I ran two cases, one with tracer_test and one without tracer_test and I am getting the exact same output.
my dt(ng) is 15 ...

Hello,

I want to add a decay term to the passive tracer equation:

dC/dt = <diffusive terms> - \alpha*C
here, C is concentration of the passive tracer, dC/dt is the material derivative, <diffusive terms> are the diffusive terms, and \alpha*C is the new term I want to add where \alpha is the decay ...

I am simulating with 8 passive tracers (dye_01 - dye_08).
I need to release them not at the same time but after interval of say 2 hours.
So dye_01 will be released at t=0, dye_02 at t=0+2 hrs, etc etc.

The only way I know right now is to do it manually, i.e. save a restart file every 2 hrs, give ...

okay, thanks!

I added the code

LDFLAGS += -L/location_of_libcurl -lcurl

and it got rid of the 'lcurl' error which I was getting while compiling in the debug mode.
Thanks Kate for this suggestion.

Debug mode compilation still was not successful due to some other error.
Anyways I went ahead and compiled ...

well...when I switched on the debug mode, it did not compile but gave error.
attaching the error.

Hello!

I have a working version which uses external forcing files (wind, BCs, rivers, ...)

On top of that I wanted to simulate non reactive passive tracers.
So I added variable 'dye_01' to
initial conditions netcdf file, with the same dimensions as that of temperature.

and in the cpp file (.h ...

An update on this:

When I am having these settings in the ocean.in file:
___________________________________________________________________
TIDENAME == osom_grid4_mindep_smlp_mod6_tidalforcing_2006.nc

NFFILES == 2 ! number of unique forcing files

FRCNAME == frc_NAM_wind_fields_OSOM_2006.nc ...

Hello!

I am running the latest version of roms (downloaded fresh copy today and ported everything from older version to newer version. I also ran the test case 'upwelling' and there was no problem in running it.)

For the model I am running, I have compiled it with no issues.
But when I am running ...

Great, that clears things up.

Thanks!

-Aakash

Hi,

I am a new user and I am confused about one option in the ocean.in file.
If I have to specify tidal forcing, should I specify it under
FRCNAME = ...... by switching off the options SSH_TIDES, UV_TIDES and RAMP_TIDES

OR switch on the options SSH_TIDES, UV_TIDES and RAMP_TIDES
and specify ...

Hi Kate,

I changed the Lm and Mm as per my grid file and the issue was resolved.
Now the Fjord tidal case is running without any errors.

I guess the lesson I learned is that when the grid is analytical grid, Lm and Mm can be changed in the input file but when external grid file is being called ...

Hi Kate,

I deleted the Build directory and oceanG file and built it from fresh.
Now after running ./oceanG < ocean_fjord.in I did not get a segmentation fault but I got a new error:

_______________________________________
*******

NETCDF_CHECK_DIM - inconsistent size of dimension: xi_rho 92 152 ...

Hi All,

I am new to ROMS and I am trying to get my hands "wet" with it.

I am trying to run the Fjord Tidal Case given here:
https://www.myroms.org/wiki/FJORD_TIDAL_CASE

Although I have the oceanS (or oceanG) file, after issuing the ./oceanG < ocean_fjord.in command,

I get the following error ...