Ocean Modeling Discussion

Thank you so much for your reply very helpful!

Hi,

Has anyone encounter similar problem as shown below? It seems that ROMS could not write information into the tidal forcing nc file generated on Windows.

DEF_TIDES - unable to open tide NetCDF file: /public/home/QLX/tide/tide_YS_8_19700101.nc

NETCDF_OPEN - unable to open existing NetCDF ...

Hi Kate, I have reported on the ROMS trac system

we need to add

USE mod_ncparam

around line 115 in t3dmix4_iso.h, otherwise the "build" process will fail, when we define MIX_ISO_TS and TS_DIF4.

The calcuation of tau in t3dbc_im.F of the latest version is writen as:

tau=Tobc_out(itrc,ng,iwest)
IF ((dTdt*dTdx).lt.0.0_r8) THEN
tau=Tobc_in(itrc,ng,iwest)
ELSE
tau=tau*dt(ng)
END IF

and it should be:

IF ((dTdt*dTdx).lt.0.0_r8) THEN
tau=Tobc_in(ng,iwest)
ELSE
tau=Tobc_out(ng,iwest ...

Thanks for your reply, the problem is solved by adding .mpd.conf file in my home directory and excute mpd & , then use the same mpirun command.


Sorry for misleading, It seems the problem is solved when I posted the reply, but failed later, then I give up trying mpich2 and use openmpi instead.

Thanks for your reply, the problem is solved by adding .mpd.conf file in my home directory and excute mpd &, then use the same mpirun command.

Hi all,

I have recently moved my cases to a new machine, and i use

mpirun -np 4 ./oceanM ocean_prereal_grd2_wrt_8.in > out.log

and following errors occur ( all the node number is zero ) in the log file:



Process Information:

Node # 0 (pid= 4314) is active.

Model Input Parameters: ROMS ...

The "SMAGORINSKI" in cppdefs.h should be changed into "SMAGORINSKY" as those in other codes. Otherwise this option won't be activated.

Hi all,

During making, the following problem occurs:

$ make
makefile:230: INCLUDING FILE Compilers/make_macros.mk WHICH CONTAINS APPLICATION-DEPENDENT MAKE DEFINITIONS
make: Warning: File `Compilers/make_macros.mk' has modification time 1.2 s in the future
cp -f /usr/local/netcdf-3.6.0p1-x86_64 ...

It looks the "-tp k8-64" option is not available because you're not compiling it on an AMD system. You may need to edit the appropriate *.mk (Linux-pgi.mk maybe?) file in the Compiliers directory to set your CPP options correctly.

yes, I have changed it into "-tp p7" on my system, then it works.

Thanks for your reply!

In my idealized case, before I add SOUTH_VOLCONS, the summation of zeta in the whole domain is decreasing with time (mass lose). When I activate South_VOLCONS only or West, East, South _VOLCONS simultaneously, the summation of zeta is increasing with time (mass gain).

I have ...

Now I define the OBC of an idealized upwelling case in a rectangular grid （water depth is parallel to the E-W direction) as

EW_PERIODIC,
SOUTH_FSGRADIENT
SOUTH_M2RADIATION
SOUTH_M3RADIATION
SOUTH_TRADIATION

North is masked land.

Then I activate SOUTH_VOLCONS, but the sum of the zeta in the ...

Thanks for your suggestion!

I have tried a few tests by changing the advection schemes and horiz mix related options by using the ROMS default upwelling case.

If I define:
MIX_GEO_UV, MIX_GEO_TS, UV_VIS4, TS_DIF4,
And setting the visc4 = 0 and tnu4 = 0
The model blows up after about 90 steps.

If ...

Yes, I have also activated

#define UV_VIS4
#define MIX_GEO_UV

and

#define TS_DIF4
#define MIX_GEO_TS

And I have done some tests by increasing TNU4 and VISC4, there is little change.

Hi All,

I have tested some of the advection schemes by running an idealized upwelling case driven by wind forcing.
The North is land, and South is Wall, East-West are periodic BCs,
The wind is along the channel x-direction,
sloping bottom along channel y-direction.

However, the results show ...

Thanks a lot! :D I find it.

Then I think the following parts in the cppdefs.h in ~/ROMS/Include/ should be modified, so that the users won't get confused.

** The following is short description of all available CPP options. **
** **
** OPTIONS associated with momentum equations: **
** **
** The ...

Hi all,

In roms2.2 the default advection for momentum equation is third-order upstream bias, but now the default horizontal and vertical advection is 4th-order centered.

The third-order upstream bias is no longer used in ROMS? Why?

Can we define UV_U3HADVECTION in /ROMS/Include/*.h?

:roll ...

Thanks for your instruction, I have chosen the wrong netcdf library to be included.

Hi All,

when I am trying to compiling the ROMS3.0 on the Linux using pgi, the make version is 3.80, following problem occurs:

cd Build; pgf90 -c -u -Bstatic -fastsse -Mipa=fast -tp k8-64 mod_netcdf.f90
PGF90-S-0087-Non-constant expression where constant expression required (mod_netcdf.f90: 607 ...

Thank you very much for your quickly reply and instruction!

Hi,

when I tried to download ROMS, following problem occured:

svn: Bad URL passed to RA layer
svn: Unrecognized URL scheme: https://www.myroms.org/svn/src/trunk

anyone knows what is the problem? Thanks a lot!

Hi John,

Thanks for your information! I forget to mention that every time I launch seagrid, some warnings appear:

>> seagrid
??? SWITCH expression must be a scalar or string constant.

Error in ==> C:\MATLAB6p1\toolbox\seagrid\@seagrid\doticks.m
On line 78 ==> switch lower(theMapUnits)

Error in ...

Hi Rich,

Thanks for your help! I copied these two files into my matlab\toolbox\seagrid\mex, it is still not working. i wonder if i have misunderstood what you mean, cause i don't have mexsepeli.mexw32 or mexrect.mexw32 in the original seagrid\mex folder. If you replace your win32 mex files with ...

Hi all,

i want to make large grid of 400×200 by seagrid, and i increased the NX, NY in mexsepeli.inc, and the size of the Z array in mexrect.F. But it is still not working.


??? warning - tracking error

Error in ==> C:\MATLAB6p1\toolbox\seagrid\mex\mexrect.dll
Error in ==> C:\MATLAB6p1\toolbox ...