Ocean Modeling Discussion

Hi Wilkin,

I'm a new user of Matlab and ROMS model. Can you kindly help me how to print the image of roms_zview command?
Which command I can do to plot with specific area?
Thank you very much!

Hi Dr. John, I had displayed the sizes of hlon, hlat, tmp variables after interpolating like this: hlon= 4500 1 hlat=4251 1 tmp= 40 4500 4251 however I got the error: Error using griddedInterpolant The grid vectors do not define a grid of points that match the given values. Error in interp2 ...

Hi Dr. John, Thank you very much for your suggestion. I can learn a little bit from the data. I've been practicing the hycom data in the url (https://tds.hycom.org/thredds/dodsC/GLBy0.08/expt_93.0/FMRC/runs). However, I got the problem when interpoting the u values into the grid. This error was like ...

Hi everyone, I'm practicing create the Clim condition for ROMS model by using the real-time data from https://tds.hycom.org/thredds/catalog/GLBy0.08/expt_93.0/FMRC. However, when I displayed the time values in this url, it showed that this values ranged from 120 to 300. How can I do to create the ...

Dear Dr. John, My problem came from the clm, ini, bdy conditions. All of the values of u,v, temp, zeta variables are zero. The data that I used for this case was in the GLBy0.08/latest dataset URL. I also tried using the datasets from GLBy0.08_930_FMRC URL with the 00Z and 12Z 26Dec2021, however ...

Dear Dr. John,
Thank you for your help.
After I checked my ini condition, I found out that the values of u, v and zeta variables = 0. Indeed the problem came from my ini file.
Thank you very much!

Hi everyone, I have a question related to the time forecasting of the HYCOM GLBy0.08/latest data. For example, at 00Z 23Dec2021, how many time can the COAWST model (WRF+ROMS+SWAN) forecast? (24h, 48 or 72, ...). In addition, 3D BC's, IC’s, and Climatology fields are generated by the roms_master_c ...

Dear Dr. John, Thank you for your explanation. Based on your advices, I can generate the ini, clm conditions and the contact file as well. However, during testing process, I got the problem in the COAWST.out file is that: TIME-STEP YYYY-MM-DD hh:mm:ss.ss KINETIC_ENRG POTEN_ENRG TOTAL_ENRG NET_VOLUME ...

Dear Dr. John, I have another question related to use the create_roms_child_init and create_roms_child_clm programs. For example, when I need to create the ini, clm conditions of the 2nd grid, I use the ROMS grid and the ini, clm conditions from the parent grid. So when I run model with 3 nested ...

Dear Dr. John,
Thank you for your clear explanation.
Just like you said my error came from the the boundary of swan grid 2. After I clear out all of the boundary data from the 2nd grid of swan model, my model can run successfully.
Thank you very much!

Hi John, Thank your for your reply. You are right, I forgot using the #define Nesting option in the *.h project. According to your suggestion, I have used the #define Nesting option and recompiled model, this issue didn't appear again. However, I got another error like that: forrtl: severe (174 ...

Hi everyone, I got the error when I ran the COAWST model with the nested grids of ROMS and SWAN model. The detail of this issue is that: READ_PHYPAR - Invalid dimension parameter, NestLayers2 must be equal to one in non-nesting applications. Found Error: 05 Line: 201 Source: ROMS/Utility/inp_par.F ...

HI Kate, Thank you very much for your reply. My blow-up issue came up after more than 09 hours running as you can see here: Timing for main: time 2017-11-02_21:15:20 on domain 2: 1.68971 elapsed seconds 2230 2017-11-02 21:17:30.00 8.227072E-02 2.282634E+04 2.282642E+04 8.107080E+16 (216,070,02) 1 ...

Hi Kate, I have plotted some valuables in the last hst output file but I didn't see somethings went bad in my case or maybe with my limited knowledge about the ROMS model I didn't see that. Can you kindly help me to find the solution for this blow-up error? I have tried to use a shorter timestep but ...

Hi Dr. Warner, Thank you for your reply. Regarding to the initial vertical stratification for ROMS, I set up like that: mini_depth=10m, theta_s=10; theta_b=0.4; Tcline=50; N=30; Vtransform =1; Vstretching =1; Additionally, the initial condition of SST in three cases (WRF-CTL, WRF-UDSST, COAWST) are ...

Hello everyone, I've been practicing COAWST model to simulate the intensity of the tropical cyclones in the southeast Asian. In my experiment, I had set up three cases, including WRF-control, WRF-update SST, COAWST (WRF+ROMS+SWAN) to run the 48-h simulation. The result showed that the intensity of ...

Hi Wilkin,
Thank you for your help.
This is my typing mistake, I changed that and this error doesn't occur again.
Thank you very much!

Hi ROMS Community, I got the problem when I used the extract_bath.m program with the etopo5 data to create the bathymetry data. It was successful for the USeast area like the COAWST manual, but I modified it to another are but it failed without error or warning. This is my program: % % EXTRACT_BATH ...

HI Robertson, Thank you for your reply. I've changed REC=0 in the script set DT=0 # plotting interval (plot all records set REC=1 # Starting time record (minus 1) to process however, this error still appeared. Plottable Fields in Primary NetCDF File: --------------------------------------- /work ...

Hi Robertson, Thank you for your answer. After I added the coastline file to the script, the error didn't appear again. Unfortunately, I got the another error is that: GET_NC2DAT - error while reading variable: temp NetCDF: Index exceeds dimension bound Execution abnormally terminated in module: GET ...

Hi Arango, Thank you for your help. I tried using your program to plot ROMS output but I got the error like that: Fri May 21 14:59:21 +07 2021 At line 32 of file read_fname.f90 (unit = 5, file = 'stdin') Fortran runtime error: End of file if: Expression Syntax. At line 32 of file read_fname.f90 ...

Hi everyone, I'm compiling COAWSTv3.7 model with WRF+SWAN option, I got the error like that: get_wrf_moving_grids.f90(49): error #6404: This name does not have a type, and must have an explicit type. [A2ONAME] nc_name=A2Oname(ia,1) --------------------^ get_wrf_moving_grids.f90(49): error #6054: A ...

Hi everyone,
I'm practicing plot the ROMS output by using the plt_html.sh script, however I don't find the ncgm2www script in src/bin.
Can anyone kindly give me this program?
Thanks all,
Bests,
manh,

Hi everyone, I've been using COAWST model with new version (3.7), however, I got the error related to the MPI like that: Fatal error in MPI_Send: Other MPI error, error stack: MPI_Send(173)..................: MPI_Send(buf=0x4768f30, count=4, MPI_INTEGER, dest=0, tag=31, comm=0xc400002c) failed MPIDI ...

Hi John, I've practiced many cases related to simulate the SST value with WRF_CTL, WRF with updating SST data, COAWST model (WRF+ROMS+SWAN) in which the initial of WRF model is updated with SST data. The result at the initial time is quite good, but after 06-12h simulating, the SST of COAWST model ...

Hi everyone, I got the error when I ran the ww3_swan_input program. This error is described like that: Error using fgets Invalid file identifier. Use fopen to generate a valid file identifier. Error in fgetl (line 32) [tline,lt] = fgets(fid); Error in ww3partition_2TPAR (line 22) tline = fgetl(fid ...

Hi everyone, I got the error when I ran the model with WRF and ROMS option which is described in the below: forrtl: severe (174): SIGSEGV, segmentation fault occurred Image PC Routine Line Source coawstM 00000000038D5BFA Unknown Unknown Unknown libpthread-2.17.s 00002B4AF22F95D0 Unknown Unknown ...

Hi Kate, I had the same problem during running period, my model died after 2 hours forecast. My error is displayed in the below: DIAG speed trouble 20.0066825983225 Found Error: 01 Line: 351 Source: ROMS/Nonlinear/main3d.F Found Error: 01 Line: 332 Source: ROMS/Drivers/nl_ocean.h Blowing-up: Saving ...

Hi everyone, I have a problem which related to create the ww3partition_2TPAR data by using the ww3_swan_input.m program. I can run this program successfully with the data before 2018, however I got this error immediately when using the date of 2018. The error is displayed in the below: Error using ...

Hi John,
Thank you for your reply. I've posted my issue on your site.
Please help me to solve it.
Thanks,

Hi John, In term of the warning (Quadruplets will be updated per iteration), I've fixed it by changed my grid points in SWAN's namelist and my script.in. To be more detail, I've increase the number of grid point of SWAN model by 1 to equal with the number of grid point of ROMS model. - My ROMS's ...

Hi John, Thank you for your suggestion! I've changed my SWAN's namelist with "OFF QUAD" option, but I got this error: &COMPUTE STAT 20161017.000000 COMPUTE NONSTAT 20161017.000000 1 HR 20161023.000000 ** Error : Quadruplets should be activated when SWAN ** Error : is running in a third generation ...

Hi everyone, I'm a new user of the COAWST model. I've been using WRF+ROMS+SWAN option, however, I got the warning when running the model: ** Warning : Quadruplets will be updated per iteration ** Warning : instead of per sweep. This will increase ** Warning : amount of internal memory with a factor ...