Search found 30 matches

by MIDHILAVARNAV
Fri Jan 26, 2024 2:01 pm
Forum: ROMS Discussion
Topic: Need Help Saving Idealized Grid Structure to NetCDF File in MATLAB
Replies: 4
Views: 1205

Re: Need Help Saving Idealized Grid Structure to NetCDF File in MATLAB

If you have made changes to variables you can use the inbuilt function of matlab (nwrite) itself to store them in the existing variable of the netcdf file.
by MIDHILAVARNAV
Tue Jan 23, 2024 9:42 am
Forum: ROMS Discussion
Topic: Need Help Saving Idealized Grid Structure to NetCDF File in MATLAB
Replies: 4
Views: 1205

Re: Need Help Saving Idealized Grid Structure to NetCDF File in MATLAB

The function is c_grid.m. The function takes the following as arguments on input: % % Lp Number of RHO-points in the XI-direction % Mp Number of RHO-points in the ETA-direction % Gname Grid NetCDF file name (string) % NewFile Switch to create a new file (logical, OPTIONAL) % spherical Spherical grid...
by MIDHILAVARNAV
Wed May 10, 2023 8:17 am
Forum: ROMS Discussion
Topic: best 3D visualization tool for ROMS
Replies: 2
Views: 3692

Re: best 3D visualization tool for ROMS

ROMS tools (Matlab based) have a romsgui function, an interactive visual toolbox. ( The link http://forge.ipsl.jussieu.fr/roms_locea ... order=name). Pl Check folder visualisation tools
by MIDHILAVARNAV
Wed May 10, 2023 8:11 am
Forum: ROMS Discussion
Topic: The salinity is too small
Replies: 6
Views: 2255

Re: The salinity is too small

The forcing file which is required is climatological (roms_frc_woa365.nc), which could be created easily using the Romstools toolbox (specifically for your grid) using
climatological World Ocean Atlas data (WOA2013).
by MIDHILAVARNAV
Tue May 09, 2023 8:50 am
Forum: ROMS Discussion
Topic: The salinity is too small
Replies: 6
Views: 2255

Re: The salinity is too small

Yes, adding the same in the header file and recompiling it.
by MIDHILAVARNAV
Tue May 09, 2023 5:40 am
Forum: ROMS Discussion
Topic: The salinity is too small
Replies: 6
Views: 2255

Re: The salinity is too small

Have you tried adding salinity correction term to the CPPDEFS key ?
by MIDHILAVARNAV
Tue Nov 01, 2022 10:41 am
Forum: ROMS Discussion
Topic: Canyon test case: unable to open restart NetCDF file
Replies: 6
Views: 7479

Re: Canyon test case: unable to open restart NetCDF file

The reason for this is probably the location of the file directory you provided, ROMS could not locate the restart file location. Pl check if the location you provided in .in file is correct or not.
by MIDHILAVARNAV
Thu Sep 22, 2022 8:32 am
Forum: ROMS Problems
Topic: NaN occur in fisrt step
Replies: 7
Views: 6695

Re: NaN occur in fisrt step

Checking your log file it has been found that there exist NaN values in your U wind and V wind component (1.0000E+35) and also in many other variables of your forcing file. So you have to mask those bad values before running the model by setting the NaN flag in your forcing file. The forcing file is...
by MIDHILAVARNAV
Mon Aug 01, 2022 8:42 am
Forum: ROMS Tools and Techniques
Topic: How to extract all sea surface height data along the lon, lat path
Replies: 3
Views: 4293

Re: How to extract all sea surface height data along the lon, lat path

I think you could use the roms_2d slice.m function in the same repository or use secondary software like Ferret (sample_xyt) to extract the data from the post-processed ROMS output data.
by MIDHILAVARNAV
Wed Apr 27, 2022 10:05 am
Forum: ROMS Discussion
Topic: Regarding creation of ROMS FILES before compilation in ROMS PISCES model
Replies: 1
Views: 704

Re: Regarding creation of ROMS FILES before compilation in ROMS PISCES model

You would have to set the switch for intermediate file (OA ) ON (ie to 1) in the parameter file(romstools_param.m). And try re-running the script again.
by MIDHILAVARNAV
Tue Jan 28, 2020 4:54 am
Forum: ROMS Problems
Topic: A ROMS nesting question
Replies: 10
Views: 13270

Re: A ROMS nesting question

Dear Kobashi, You may please note that ROMS has the capability to perform the spatial and temporal interpolation of 2D forcing fields. So it is not necessary that you need to interpolate your forcing files to your grid. But make sure that forcing file is either larger in dimension or smaller ( I mea...
by MIDHILAVARNAV
Mon Jan 27, 2020 4:16 am
Forum: ROMS Problems
Topic: A ROMS nesting question
Replies: 10
Views: 13270

Re: A ROMS nesting question

Dear Kobashi, I also had the same problem when I used same forcing files for nested grids(exception tidal forcing), the same was solved by repeating the forcing names as follows The following is an excerpt from my .in file NFFILES == 9 9 ! number of unique forcing files FRCNAME == input/ncmrwf/Input...
by MIDHILAVARNAV
Thu Dec 12, 2019 4:57 am
Forum: ROMS Discussion
Topic: Request: Numerical modeling course syllabi
Replies: 11
Views: 8285

Re: Request: Numerical modeling course syllabi

The following is the syllabus of Department of Physical Oceanography CUSAT, splitted into theory and practical sections. Please find the attached figures giving details about the theory syllabus MODELING1.png The syllabus for practicals section is given by the following attachment Practical_modeling...
by MIDHILAVARNAV
Tue Jul 30, 2019 4:35 am
Forum: ROMS Problems
Topic: Nesting problem:Subscript #1 of the array IDG has value -999
Replies: 2
Views: 1603

Re: Nesting problem:Subscript #1 of the array IDG has value

Have you created a new contact grid file after you changed the domain ? As domain changes the contact point also changes.
by MIDHILAVARNAV
Tue Jul 02, 2019 8:12 am
Forum: ROMS Problems
Topic: ROMS 2-way nesting
Replies: 8
Views: 4901

Re: ROMS 2-way nesting

Dear osua72
I have also met up with such instable values in salinity during my two way nesting and for one way it is almost fine. Would it be possible for you to check the configuration with one way nesting defined instead of two way?
by MIDHILAVARNAV
Tue Jul 02, 2019 7:41 am
Forum: ROMS Problems
Topic: ROMS 2-way nesting
Replies: 8
Views: 4901

Re: ROMS 2-way nesting

Dear osua72
Was you able to resolve the blowup? Could you please state out what was wrong with the setup.
by MIDHILAVARNAV
Tue Jul 02, 2019 7:24 am
Forum: ROMS Discussion
Topic: Negative salinity during two way nesting
Replies: 1
Views: 1567

Negative salinity during two way nesting

I have tried using a simple nesting set up (both one way and two way), when I run the two way nesting setup negative values arise and further it blows up[ cfl criterion is still valid] but for one way no such negative values arose. I would like to know the possible reasons for the same. The both sim...
by MIDHILAVARNAV
Wed Jun 26, 2019 6:26 am
Forum: ROMS Tools and Techniques
Topic: Creating contact grid file for 2 independent grids.
Replies: 0
Views: 1324

Creating contact grid file for 2 independent grids.

I have 2 grids which are running independently one of a larger region with coarse resolution and other within the larger region and smaller in domain and of higher resolution. The grids are needed to be nested, to create contact point file I used contact.m but error of non existence of contact point...
by MIDHILAVARNAV
Tue Jun 25, 2019 5:57 am
Forum: ROMS Discussion
Topic: Slow running of nesting simulation
Replies: 5
Views: 2430

Re: Slow running of nesting simulation

My standalone ROMS set up for coarse(1/12) and fine(1/36) resolution is running well individually but when I use two way nesting the Cw value becomes greater than one for finer resolution grid. Is that problem due to the higher time step? I have used 300,100 for coarse and finer resolution respectiv...
by MIDHILAVARNAV
Mon Jun 10, 2019 11:50 am
Forum: ROMS Discussion
Topic: Slow running of nesting simulation
Replies: 5
Views: 2430

Re: Slow running of nesting simulation

Hi kate, I need your help to resolve one of my doubt regarding Nesting, I have a coarser grid (1/16) and a refined grid(1/48) the refined grid is created from the coarse using coarse2refine.m matlab script. Rather than having a higher resolution bathymetry for the refined grid, the same bathymetry i...
by MIDHILAVARNAV
Mon Jun 10, 2019 8:27 am
Forum: ROMS Discussion
Topic: Slow running of nesting simulation
Replies: 5
Views: 2430

Re: Slow running of nesting simulation

Thank you for the reply Kate. I tried with multiple combinations of Ntilei and NtileJ keeping their ratio almost equal to Lm/Mm, as I reduced the total number of processors from 40x30 to 10x7 (40/30=1.33~Lm/Mm)(10/7=1.423~Lm/Mm) I was able to decrease the time taken for running the model considerabl...
by MIDHILAVARNAV
Fri Jun 07, 2019 12:23 pm
Forum: ROMS Discussion
Topic: Slow running of nesting simulation
Replies: 5
Views: 2430

Slow running of nesting simulation

I have started to run a two way nesting simulation with a grid size of 1079*755 755*663, for running 2 minutes the time taken is 3 minutes approximately(slower as compared to standalone model), I am attaching my .in file for your reference. Kindly suggest a solution for this one. I have seen previou...
by MIDHILAVARNAV
Fri Jun 07, 2019 5:38 am
Forum: ROMS Problems
Topic: NESTING RUNTIME ERROR code 59
Replies: 5
Views: 2641

Re: NESTING RUNTIME ERROR code 59

Yes you are right, it was due to an error in the input script, I corrected it. Thank you.
by MIDHILAVARNAV
Tue Jun 04, 2019 4:55 am
Forum: ROMS Problems
Topic: NESTING RUNTIME ERROR code 59
Replies: 5
Views: 2641

Re: NESTING RUNTIME ERROR code 59

Thank you for your suggestions, I have figured out that the problem was due to some syntax error in my ocean.in file, and have solved it. I have tried to use export use_debug but the same results in creation of oceanG (shared executable) where as I need oceanM. Is it possible to get oceanM (Mpi para...
by MIDHILAVARNAV
Mon Jun 03, 2019 11:03 am
Forum: ROMS Problems
Topic: NESTING RUNTIME ERROR code 59
Replies: 5
Views: 2641

NESTING RUNTIME ERROR code 59

I am trying to run a refined nesting case for 2 grids, after compiling with define NESTINg I am getting the following error report: Model Input Parameters: ROMS/TOMS version 3.7 Monday - June 3, 2019 - 4:32:54 PM -------------------------------------------------------------------------------- ------...
by MIDHILAVARNAV
Mon Apr 08, 2019 5:49 am
Forum: ROMS Installation
Topic: compiling upwelling
Replies: 10
Views: 4354

Re: compiling upwelling

I suppose that you are trying to compile the test case of upwelling, i too had similiar problems while compiling the test case. Please try to rectify it by changing line 52 of Linux-gfortran.mk as follows ( code from unidata): Before LIBS := -L$(NETCDF_LIBDIR) -lnetcdf After LIBS := -L$(NETCDF_LIBDI...
by MIDHILAVARNAV
Tue Jan 23, 2018 4:58 am
Forum: ROMS Tools and Techniques
Topic: Getting data for make_forcing.m
Replies: 4
Views: 29582

Re: Getting data for make_forcing.m

Thank you Andres
by MIDHILAVARNAV
Mon Jan 22, 2018 4:50 am
Forum: ROMS Tools and Techniques
Topic: Getting data for make_forcing.m
Replies: 4
Views: 29582

Re: Getting data for make_forcing.m

No I have just the global COADS atlas files for each month in the folder. Could you please specify where to get the files mentioned by you.
by MIDHILAVARNAV
Fri Jan 19, 2018 11:04 am
Forum: ROMS Tools and Techniques
Topic: Getting data for make_forcing.m
Replies: 4
Views: 29582

Getting data for make_forcing.m

I would like to get data for running the script make_forcing.m whenever I run make_forcing.m in matlab session I am getting this as my output: ASHSW Model Read in the grid... Create the forcing file... Warning: NARGCHK will be removed in a future release. Use NARGINCHK or NARGOUTCHK instead. > In me...
by MIDHILAVARNAV
Thu Jan 18, 2018 10:35 am
Forum: ROMS Tools and Techniques
Topic: EASYGRID: Grid generation for ROMS
Replies: 24
Views: 30632

Re: EASYGRID: Grid generation for ROMS

I tried using make_grid.m of ROMS_tools to create grid, but I did not get any desired result. Kindly resolve the problem.