Ocean Modeling Discussion

isabelmonteiro

Hello,

I would like to know what is the horizontal interpolation method that ROMS uses for putting input forcing files in ROMS grid. If I use 3 different resolution forcing files and plot Y-wind stress as a function of longitude for a given latitude and a given time I get a very different profile ...

isabelmonteiro

I'm using ROMS 3.2 version,
I have a problem with stations location:
For a given Ipos, Jpos, my station location is lat=38.5391230508468 and lon=-11.0589999999828
But in history file lat_rho(Jpos,Ipos)=38.5186762826554 and lon_rho(Jpos,Ipos)=-11.072999999983

What am I doing wrong?

isabelmonteiro

I've already installed roms-3.2 without any problem. Now I need to install the 2.1 roms version.
I get the follow error message (file not found):

/usr/bin/cpp -P -traditional -DLINUX -DX86_64 -DGFORTRAN -IInclude -INonlinear -IDrivers Nonlinear/analytical.F > analytical.f90
analytical.f90
make ...

isabelmonteiro

The NS_PERIODIC boundary conditions impose a exchange of h along east and west boundaries at history file.

I´ve got several suggestions:

1st suggestion : To impose EW_PERIODIC instead of NS_PERIODIC and see if h gets exchange.
result : No wrong h at history file=> no problem with EW_PERIODIC ...

isabelmonteiro

Sorry I was out of the office.
I did the shoreface example with my grid file and I still get the shift bathymetry at history file. Did you use my grid (from the ftp site) to do the shoreface example ?

isabelmonteiro

I did what you suggested (also for all grid parameters, lat_rho,lon_rho,pn,pm,f,etc, because they were all flipped ) and I still have the same problem land at west.
Meanwhile I also tested NS_PERIODIC with a flat bathymetry with land at eastern boundary and in history file I also have the western ...

isabelmonteiro

Did you find anything with the material that I put on the ftp site?

isabelmonteiro

isabelmonteiro

I did the shoreface test (ROMS version 3.2) I get the same problem. It probably is a problem in my grid parameters that make history file confused

isabelmonteiro

Is just the first and last columns, see att difference with W and E zooms

isabelmonteiro

I will consider your suggestions.
I was considering doing something analogous to the work of Kuebel-Cervantes and Allen for northern California (Deep-Sea Research II 53 (2006) 2956-2984) they used ROMS with periodic NS, or some POM users like Oke et al. for Oregon coast (J. Phys. Oceanogr 32 1383 ...

isabelmonteiro

I did:
#undef NS_PERIODIC
#define EW_PERIODIC
and I get no changes in the bathymetry from history file.

I've checked lon_rho(1,1) and lat_rho(1,1) and corresponds to the domain southwestern corner (lower left)

isabelmonteiro

I'm using ROMS in the western Iberia coast in an upwelling configuration. Because I have a rather small domain I've imposed NS_PERIODIC boundary conditions (with bathymetry and pn,pm adjusted).
Somehow when I consider NS_PERIODIC the history file changes the bathymetry and puts at the western ...

isabelmonteiro

To better show my problem with NS_PERIODIC, I've 3 figures with h. "Grid_bathy.jpg" is the bathymetry read from the grid file, "NS_periodic_his_bathy.jpg" is the bathymetry read from history file with NS_PERIODIC boundary conditions where the wrong h appears at Western and Eastern boundaries and ...

isabelmonteiro

I did the test NS_PERIODIC similar to the EW UPWELLING test case, and everything works ok.
Further investigating my history file bathymetry I notice that bathymetry at E and W boundaries
are different from those of my grid file. I have a EASTERN wall and of course no problem there, but I have open ...

isabelmonteiro

I'm running a ROMS application with NS_PERIODIC boundary conditions:
# define NS_PERIODIC
#define EASTERN_WALL
# define WEST_FSCHAPMAN
# ifdef SOLVE3D
# define WEST_M3RADIATION
# define WEST_TGRADIENT
# define WEST_KGRADIENT
#endif
I've adjusted my bathymetry file to have h, pm and pn equal at the N ...

isabelmonteiro

What keywords should I use in my "upwelling.h" file to prescribe Mixed Boundary conditions (as Marchesiello et al. 2001 proposed (and like it is refered in https://www.myroms.org/wiki/index.php/B ... Conditions).

isabelmonteiro

When you prescribe analytical forcing fields what fields does the model precribe at the boundaries ?

isabelmonteiro

I'm running ROMS in a upwelling configuration, to make some tests I've tried to run an analytical wind with the option # define ANA_WIND #define BULK_FLUXES
in my "upwelling.h" file but I keep getting a message that ROMS wants a FRC_FILE
(in "upwelling.h" I also set #undef FRC_FILE)

Isabel

isabelmonteiro

My grid is generated using seagrid.

isabelmonteiro

I'm running a ROMS upwelling configuration for north-eastern off Iberia.
Is it possible to prescribe, with ROMS, a variable resolution, that is; if I want to get a finer resolution near the coast can I prescribe a variable resolution in the x-direction (across-shelf direction)?

isabelmonteiro

I'm still getting horizontal velocities ~0.001 m/s with no forcing with bathymetry smoothing,the slope parameter maximum value is r = grad(h)/h = 0.2.

What is "no motion" with ROMS? What do you consider acceptable horizontal velocities with no forcing ?

Isabel

isabelmonteiro

I'm running a ROMS upwelling configuration for north-eastern off Iberia. To check if the model grid and other grid parameters are OK I setup a Run with no forcing, summer stratified configuration and a realistic smothed batymetry. I was exepcting to get a near-steday flow with near zero horizontal ...

isabelmonteiro

My domain is rather small (only 6 degrees lat) so changes in "f" will not be a problem. Besides matching bathymetry and grid spacing do you no if there is an advisable cell number to do this matching.

isabelmonteiro

I'm running ROMS for a upwelling east coast,I would like to test north-south periodic and west open boundary conditions, can anyone tell be if I have to make any changes in the north/south boundaries bathymetry or does ROMS does this internally

isabelmonteiro

I manage to run my ROMS configuration with a forcing file with a grid resolution different from the model resolution (but with a regular grid and the correct netCDF attributes). I would like to know if I can do the same with initial conditions and climatology?

isabelmonteiro

I have the environment variable NCARG_ROOT. The problem is that although the ncl_ncarg-5.1.1 was done with no problems (I've attached make-output file from ncl_ncarg-5.1.1 installation) I can't find idt executable anywhere!
I must say that I had to hand copy X11R6 include files because initially ...

isabelmonteiro

Well, why don't you have libncarg_c.a? Did you compile from source or install the binaries? Can you try fetching a newer version?

Well following your instructions I've got the ncl_ncarg-5.1.1 version and I did manage to instal the plot package and to get a gmeta file but when I do "idt gmeta ...

isabelmonteiro

My ncargversion is 4.2.2.
I've included LIBS path and now I'm getting the folloing error

monteiroi@gridpt15:~/plot_from_svn$ make
/usr/bin/gfortran -frepack-arrays -O3 -ffast-math \
cnt.o cpmpxy2d.o mapeod.o stumsl.o stumxy.o vvumxy.o -o /home/monteiroi/bin/cnt \
libUTIL.a -L/home/monteiroi/ncarg ...

isabelmonteiro

I suggest that you fetch the code from the ROMS svn site:
https://www.myroms.org/svn/src/plot/ :mrgreen:

Well I did so and now I have some fresh new problems (with ncarg libs I suppose ):

/usr/bin/gfortran -frepack-arrays -O3 -ffast-math \
cnt.o cpmpxy2d.o mapeod.o stumsl.o stumxy.o vvumxy.o ...

isabelmonteiro

I've overcome the problem of not recognizing #include "netcdf.inc" I just took the "#" and line 39 now is include "netcdf.inc".

But now I have another problem first I have to hand copy the *.F to *.f90 to plot/src/ directory where I have the Makefile (its annoying but I can do it) but the worst is ...

isabelmonteiro

I download it from
https://www.myroms.org/index.php?page=Processing ,

In that line I included:

#include "netcdf.inc"

isabelmonteiro

In fact in the "crash.f90" that I downloaded there is no "#include "netcdf.inc" so I put it in the code and now I get the following message:
gfortran -c -frepack-arrays -O3 -ffast-math crash.f90
Warning: crash.f90:39: Illegal preprocessor directive

and I still can´t visualize my fields

Thanks

isabelmonteiro

I've successful installed roms and I'm now running with "real" bathymetry... But I didn't yet manage to install the plot package; running the makefile I get the following message:

monteiroi@gridpt15:~/plot/src$ make
/usr/bin/gfortran -c -frepack-arrays -O3 -ffast-math crash.f90
In file crash.f90 ...

isabelmonteiro

I have installed the NetCDF package apparently with no problems, after doing "make check install" I got the message: Congratulations! You have successfully installed netCDF!

But when I tried to use ncdump I get the following message:
-bash: ncdump: command not found

Can you please tell me what ...

isabelmonteiro

I followed your suggestion and I’m working now in a machine with a more recent PGI compiler, ROMS installation was straightforward.

Thank you

isabelmonteiro

I attached my mod_netcdf.f90 file (from my Build directory). Anyway do you think that I could use a former version of mod_netcdf.f90 which my PGI could handle? :?

In the installation of this latest version of ROMS, previous to find this mod_netcdf.f90 error, I have done some changes on my Linux-pgi ...

isabelmonteiro

I'm installing roms_395.While compiling "mod_netcdf.f90" I get the following messages:
PGF90-S-0034-Syntax error at or near identifier netcdf_get_fvar (mod_netcdf.f90: 29)
PGF90-S-0034-Syntax error at or near identifier netcdf_get_ivar (mod_netcdf.f90: 34)
PGF90-S-0034-Syntax error at or near ...

isabelmonteiro

I'm using ROMS in Atlantic coast of the Iberian Peninsula. To investigate the dynamics of the upwelling in this region, I want to study the different energy terms. Does anyone know if there is any user in ROMS community that developed an energy diagnostic tool?

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