Search found 24 matches

by julian.kuhlmann
Wed Nov 21, 2012 5:04 pm
Forum: ROMS Wish List
Topic: some of the standard output in netcdf
Replies: 1
Views: 5399

Re: some of the standard output in netcdf

I agree, netcdf output for these variables would be nice! For the time being, here's a fix using awk and cdo: awk '/0:00 / { print $4 }' output.out > ekin.txt cdo -f nc input,r1x1 ekin.nc < ekin.txt For epot, replace "$4" with "$5", etc. Who knows, someone might find it useful.
by julian.kuhlmann
Thu Oct 11, 2012 9:01 am
Forum: ROMS Usage
Topic: Imposing sea level time series at boundaries
Replies: 10
Views: 7283

Re: Imposing sea level time series at boundaries

Thank you, Kate! Then I just misread your answer. I thought when you said "it is tricky/impossible to simply impose zeta" you meant we shouldn't use it at all, but now I gather that simply imposing would mean the option Clamped, but we should use Chapman and Flather instead.
by julian.kuhlmann
Wed Oct 10, 2012 2:56 pm
Forum: ROMS Usage
Topic: Imposing sea level time series at boundaries
Replies: 10
Views: 7283

Re: Imposing sea level time series at boundaries

Does anybody have further suggestions on what kind of zeta/ubar/vbar boundary conditions to use in non-tidal applications?
by julian.kuhlmann
Wed Sep 19, 2012 9:39 am
Forum: ROMS Usage
Topic: Imposing sea level time series at boundaries
Replies: 10
Views: 7283

Re: Imposing sea level time series at boundaries

So does that mean the Chapman/Flather condition only makes sense for tides? Why? And what would be better for non-tidal sea level and barotropic momentum?
by julian.kuhlmann
Tue Sep 04, 2012 7:59 am
Forum: ROMS Bugs
Topic: negative temperature
Replies: 14
Views: 12769

Re: negative temperature

Since the most extreme negative temperatures are located at the coasts: Have you checked if maybe the land-sea-mask of the forcing does not exactly match the one of your ocean model? You can turn on surface net heat flux output to see if you lose the heat toward the atmosphere.
by julian.kuhlmann
Fri May 25, 2012 9:42 am
Forum: ROMS Usage
Topic: Where does ROMS store SSTs?
Replies: 3
Views: 3426

Re: Where does ROMS store SSTs?

Thank you for your responses! I actually made a mistake when estimating the depth of the uppermost rho-point, and it is not as far from the surface as I thought. Also, the temperature in the first couple of sigma-layers doesn't vary much, so I guess it's all right to just use the top layer's tempera...
by julian.kuhlmann
Fri May 25, 2012 9:07 am
Forum: ROMS Problems
Topic: Zeta following the bathymetry and velocity profiles
Replies: 2
Views: 2759

Re: Zeta following the bathymetry and velocity profiles

Thanks for the response! I am running with reanalysis forcing. In runs without forcing, there is the same effect but smaller. I doubt that the bathymetry is the problem, since there have been other studies with a similar setup. Maybe this is just a meaningful effect simulated by the model that for s...
by julian.kuhlmann
Tue May 15, 2012 2:48 pm
Forum: ROMS Usage
Topic: Where does ROMS store SSTs?
Replies: 3
Views: 3426

Where does ROMS store SSTs?

I would like to compare my modelling output to satellite-measured SST. Is it possible to have ROMS write out an SST variable? Or should I just take the uppermost layer of the variable "temp" (potential temperature)? On the one hand, that might be all right, since the temperature in the mod...
by julian.kuhlmann
Tue May 15, 2012 1:10 pm
Forum: ROMS Problems
Topic: Zeta following the bathymetry and velocity profiles
Replies: 2
Views: 2759

Zeta following the bathymetry and velocity profiles

My ROMS application with one-way nesting into a global ocean model and realistic atmospheric forcing runs in a stable way, but the results are a bit unrealistic. In particular, the SSH (variable zeta) and the horizontal velocities closely follow the bathymetry (which I smoothed already to avoid such...
by julian.kuhlmann
Tue May 15, 2012 12:56 pm
Forum: ROMS Problems
Topic: sponge layer for biharmonic viscosity
Replies: 4
Views: 5091

Re: sponge layer for biharmonic viscosity

I finally solved the problem for my case by employing Chapman boundary conditions for zeta and Flather boundary conditions for ubar and vbar. This removes the inconsistencies in the continuity equation at the boundaries which seems to have been responsible for the high vertical velocities.
by julian.kuhlmann
Fri Apr 13, 2012 12:30 pm
Forum: ROMS Problems
Topic: sponge layer for biharmonic viscosity
Replies: 4
Views: 5091

Re: sponge layer for biharmonic viscosity

Saulo,

have you found a solution to your problem? I seem to have a similar one.

Cheers,
Julian
by julian.kuhlmann
Tue Feb 07, 2012 4:48 pm
Forum: ROMS Installation
Topic: Compiler warnings since upgrade
Replies: 7
Views: 5655

Re: Compiler warnings since upgrade

Thanks, Hernan! This did the trick for me, I can now again compile without errors or warnings.
by julian.kuhlmann
Fri Feb 03, 2012 3:35 pm
Forum: ROMS Installation
Topic: Compiler warnings since upgrade
Replies: 7
Views: 5655

Compiler warnings since upgrade

Hi, since the last update (announced here ), I receive a bunch of warnings at the beginning of compilation: ROMS/Nonlinear/Module.mk:13: warning: overriding commands for target `/.../Build/libNLM.a' ROMS/Nonlinear/Module.mk:13: warning: ignoring old commands for target `/.../Build/libNLM.a' ROMS/Non...
by julian.kuhlmann
Fri Jan 20, 2012 11:56 am
Forum: ROMS Discussion
Topic: it was: "Time for another European ROMS workshop?"
Replies: 7
Views: 4231

Re: it was: "Time for another European ROMS workshop?"

Sure, the goal would not be to replace the planned ROMS workshops or to move them over to Europe. But maybe we could just have an informal meeting of European users to discuss applications, problems, and some results. Just a couple of days at a European university or institute, more talks and discus...
by julian.kuhlmann
Wed Jan 18, 2012 11:07 am
Forum: ROMS Discussion
Topic: it was: "Time for another European ROMS workshop?"
Replies: 7
Views: 4231

Re: it was: "Time for another European ROMS workshop?"

I think it's a great idea and I'd definitely want to participate. If nobody from America could make it to the workshop, it should work with Europeans only, too. Especially for European PhD students, it's always hard to justify a journey to a workshop in Brazil or Honolulu in front of their superviso...
by julian.kuhlmann
Mon Dec 05, 2011 9:37 am
Forum: ROMS Discussion
Topic: on the code of ROMS
Replies: 5
Views: 3354

Re: on the code of ROMS

Have a look here: https://www.myroms.org/wiki/index.php/Subversion WARNING: It is strongly suggested that you checkout the ROMS source code using the same operating system you wish to compile and run ROMS on. If you download the code on a Windows machine and wish to run it on a non-Windows machine y...
by julian.kuhlmann
Fri Dec 02, 2011 2:16 pm
Forum: ROMS Source
Topic: Ascending/descending latitude dimension in forcing fields
Replies: 0
Views: 3692

Ascending/descending latitude dimension in forcing fields

Hi, a suggestion to the subroutine "hindices" that would probably be easy to write and extremely helpful in certain cases: There should be an error message for when the condition ((Ygrd(1,j ).le.Ypos(mp,np)).and.(Ygrd(1,j+1).gt.Ypos(mp,np))) (and vice versa for X) is never satisfied. More ...
by julian.kuhlmann
Fri Nov 25, 2011 2:08 pm
Forum: Meetings/Workshops
Topic: EGU '12 Crustal heatflow & its influence on the Earth system
Replies: 0
Views: 3574

EGU '12 Crustal heatflow & its influence on the Earth system

Apologies for multiple/cross-postings, but we would like to draw your attention to the following session at EGU 2012 in Vienna and invite you to submit an abstract: GD2.3 Crustal heatflow and its influence on the Earth system (co-listed in OS - Ocean Sciences and CR - Cryospheric Sciences) Convener:...
by julian.kuhlmann
Wed Nov 16, 2011 4:35 pm
Forum: ROMS Problems
Topic: How to use forcing package
Replies: 12
Views: 10305

Re: How to use forcing package

CORE2 looks good, thank you! I think I can use this. The other thing I need is the ini- and especially bry-files for the open edges. Where do you usually get these from?
by julian.kuhlmann
Tue Nov 15, 2011 4:04 pm
Forum: ROMS Problems
Topic: How to use forcing package
Replies: 12
Views: 10305

Re: How to use forcing package

Hi Kate, were you able to find some pieces of code that could help me?
by julian.kuhlmann
Tue Nov 08, 2011 9:41 am
Forum: ROMS Problems
Topic: How to use forcing package
Replies: 12
Views: 10305

Re: How to use forcing package

Thank you, that sounds great! I just need something to start with, later I might replace pieces that turn out to be problematic. I'm planning a hindcast simulation of the years 2002-2006 for the area around South Africa and a piece of the ACC, probably around 1/4-degree resolution. 6-hourly winds ar...
by julian.kuhlmann
Mon Nov 07, 2011 2:35 pm
Forum: ROMS Problems
Topic: How to use forcing package
Replies: 12
Views: 10305

Re: How to use forcing package

I'm basically looking for something equivalent to the Roms-tools that come with the ROMS-Agrif distribution, but they are not really compatible with Rutgers ROMS. They let you pick a study region and time period and provide all grd/ini/frc/blk/clm/bry/... files that one needs for a simulation. I was...
by julian.kuhlmann
Fri Oct 28, 2011 8:36 am
Forum: ROMS Problems
Topic: How to use forcing package
Replies: 12
Views: 10305

Re: How to use forcing package

Are there any news about Python/Fortran/Matlab/whatever packages to create forcing files?