Ocean Modeling Discussion

Dan_chan

Hi, I use OTPS to extract my TIDEFILE and have some confusion about "tide_start". As OTPS toolbox couldn't set zero_phase_date variable directly, I set TIDE_START in roms.in. As shown in #896 https://www.myroms.org/projects/src/ticket/896 , it returns to same result compared with zero_phas...

Dan_chan

Thank you,

I am currently using rst to implement long-time simulation, it works. ROMS/Modules/mod_iounits.F helps me steer clear of potential issues related to character lengths in the future, I would continue to familiarize myself with the ROMS source code.

Dan_chan

Hi everyone, I've encountered an issue with the FRCNAME parameter in my roms.in and I'm seeking some guidance. It seems that when the number of FRCNAME entries exceeds 204 , for example 210 (though NFFILES == 7, 7*30years=210), I encounter an error. Unfortunately, there is no specific "Error&qu...

Dan_chan

Thank you. I have followed your suggestion and updated the mat2roms_mw.m. I am pleased to report that the results are now align correctly with another. mean of pm using coawst = 2.2583e-04; mean of pn using coawst = 2.2577e-04; mean of pm using roms_metrics = 2.2567e-04; mean of pn using roms_metric...

Dan_chan

Hi, I am currently experimenting with the generation of grid.nc using two different toolkits (coawst and roms-web). But I noticed a significant disparity in the values of pm and pn obtained from these two sources. I then stick some steps briefly to show how I generated pm and pn below. (lon and lat ...

Dan_chan

I am sorry to post my error here. I met similar Error, inquiring average file TIME-STEP YYYY-MM-DD hh:mm:ss.ss KINETIC_ENRG POTEN_ENRG TOTAL_ENRG NET_VOLUME C => (i,j,k) Cu Cv Cw Max Speed 394560 1993-01-01 00:00:00.00 4.052343E-03 2.939434E+02 2.939475E+02 2.416712E+13 (127,076,31) 1.508281E-02 3.1...

Dan_chan

Thank you for answers

I changed the revision 1192 back to 1170 without "Waves Effect on Currents", but pio failed to compile.

revision 1192:

I used the same external libraries in revision 1170:

Dan_chan

Hi,

I found ROMS update "Waves Effect on Currents" in roms.in (https://www.myroms.org/projects/src/ticket/943) which I have never used in old versions. I am very confused of these settings and how to activate ?

Dan_chan

I change my ''bry.nc'', the results become better, though the figure of two "bry.nc" seem nearly same. I will continue to check is there any invisible requirements when make boundary file.

Dan_chan

I apologize for my earlier premature enthusiasm. While the large-scale anomaly at the eastern boundary has indeed disappeared, a narrow anomaly remains at the southern boundary. Even after moving south boundary northward, contracting the simulation area, this anomaly persists. Moreover, it is partic...

Dan_chan

Hi, Chen I think I may not explain clear before, I changed TNU2 from 0 to 10, which help diffusion of TS, It looked better. However, actually, I find I not solve the problem at all. There is still strong error at southern boundary, it appears only in May, June, July and Aug at surface. I am try to f...

Dan_chan

I believe there are many possible causes for this issue, such as ‘NaN’ in the forcing files or timestamp problems, as noted by fellow contributors earlier in this thread. In fact, I myself recently encountered a same problem. Fortunately or unfortunately, my model did not blow-up, possibly because I...

Dan_chan

Hi, I change my configure of TNU2, TNUDG and OBCFAC, and the boundary condition becomes better. Before, I use similiar configure of upwelling which set them as zero. But, it seems not suitable in my case. Hope to learn more of how to configure my roms.in later.

Dan_chan

Hello everyone, I apologize for resurrecting this post. However, I believe I have identified where my previous issue occurred. It relates to the advection schemes, and I realized that the new version of ROMS allows for setting advection schemes for each tracer with switches instead of a single CPP f...

Dan_chan

Hi, I am having an issue with the temperature output from my ROMS model. The temperature seems to be bad at the open boundary, as shown in Figure 1. I have compared the ROMS output with the sst data from ERA5 and avhrr-oisst datasets. I also checked the boundary netcdf compared to the ROMS output an...

Dan_chan

I faced this problem but forgot some details. Maybe you could try to use matlab tool to extract child grid. Or, try to run contact script lines by lines. The error may caused by lon-lat or xi-eta, the difference between these two types not recognized automatically.
Best regards.

Dan_chan

Hi, I have a nesting error, and I am not sure if it is somthing to this topic. I have two exp, they are both online-nesting. One is two-layers, outer parent grid's rho points is '221*303' (grdA), and its child grid (refined factor = 3) is '362*254' (grdB). I test one year, it can run. And I set Ntil...

Dan_chan

Thank you Wikin, you are right. nc_attadd and nc_varrename are ok.

wilkin wrote: ↑Thu Nov 03, 2022 3:29 pm However, I did not get any errors using nc_attadd or nc_varrename. Only nc_drename.

Dan_chan

The NetCDF library encountered an error during execution of 'renameDim' function - 'Operation not allowed in data mode (NC_ENOTINDEFINE)'. When I use 'nc_drename' function today,I encounter the following error: >> nc_drename(fid,'xrho','xi_rho') Error using matlab.internal.imagesci.netcdflib The Ne...

Dan_chan

Unrecognized field name "f" using coarse2fine Hi, I am using the latest version matlab tools ( https://www.myroms.org/svn/src/matlab) to generate finer grid nc. But, I encounter the following error: Unrecognized field name "f". Error in coarse2fine (line 666) status = nc_write (...

Dan_chan

Hi, I test pyroms example Palau_HYCOM directly and make grid nc file. But when I run 'python make_remap_weight_file.py' or 'python make_bdry_file.py 2015', it return an error on spheical. I find out the error command in .py script is dstgrd = pyroms.grid.get_ROMS_grid('PALAU1') >>> dstgrd = pyroms.g...

Dan_chan

Remarkably, I tested contact function in lake_jersey app, came with the same error. I run the command according to https://www.myroms.org/wiki/Lake_Jersey_Refinement_Example_ADE. I guess something may need to update. >> Gnames = {'lake_jersey_grd_a.nc', 'lake_jersey_grd_d.nc', 'lake_jersey_grd_e.nc'...

Dan_chan

Hi Kosa,

For Mac (apple silicon is also ok), you might just double click "GridBuilder_toolbox.mltbx" in Matlab window, and it will be loaded in your matlab toolbox automatically. Then, run "GridBuilder" command directly, Gui will show.

Hope it could help.

Dan

Dan_chan

Hi， I used grid matlab tool (from https://www.myroms.org/svn/src/matlab/grid/) to generate my nested grid contact nc. But, I met the same problem as the second question of floor #22. %% create grd nc of parent domain [99-140,0-26] >> x = 99:1:140; >> y = 0:1:26; >> [rlon,rlat] = meshgrid(x,y); >> rl...

Dan_chan

Thank you wilkin, I will git it for keeping latest version.

Dan_chan

Dear Wilkin,

Is there any difference between svn and github? I used svn to download and svn update in current dir. But it keeps -360.

If so, I might to download from github.

Thank you

Dan_chan

Thank you arango,

They are useful to change my lon of past downloded file.

Dan_chan

(to answer #3) Refer to forum https://www.myroms.org/forum/viewtopic.php?p=22253#p22253 (#13), I try to modify roms_get_era5_NCARds633_bulkflux in around line 282 and line 292. original version: lon = ncread(url,'longitude')-360; % read global lon, this is to change (180,360] to [-180,0] which is wo...

Dan_chan

Hi Wilkin,

You are right, the error may be fixed automatically. Now it works well.

Thank you

Dan_chan

Hi all, I met a new wrong when using roms_get_era5_NCARds633_bulkflux function. Actually, it worked well yesterday and I got some forcing nc. But, today the error shows like: Processing variable mean sea-level pressure Error using matlab.internal.imagesci.netcdflib The NetCDF library encountered an ...

Dan_chan

Hi Arango,

Thank you for kind help.

Dan

Dan_chan

Hi, I still have a problem on bbox. I am used to -180 to 180 or 0 to 360 when read longitude. But, the output is -360 to 0 when units shows 'degree_east'. I want to make sure that this is correct or not? I had set bbox as [99 140 0 26] before, but error showed like: Processing variable mean sea-leve...

Dan_chan

Sorry,

Maybe I missed bitcount. I download bitcount function from matlab web. https://ww2.mathworks.cn/matlabcentral/ ... bitcount_2.

Now, roms_write_era5_NCARds633_frcfile.m is ok.

Thanks to all.

Dan_chan

Hi, I am using Matlab tool shared by Wilkin to write forcing file. First, I got E value using roms_get_era5_NCARds633_bulkflux.m. I chose the real box as 99E-140E 0-26N, and set bbox as [-261 -220 0 26]. This function worked well and E value generated. Then, I run roms_write_era5_NCARds633_frcfile.m...

Dan_chan

Dear Ivan, I am new in ROMS and Data assimilation, so I am sorry for I couldn't solve your problems. Besides, I'd like to ask you some question on your result. As shown in npo_roms_grids_new.png, what did 2 rectangle mean? Do they relate to Nested Grids? How could you realize nested grids in OI. If ...

Dan_chan

The homebrew installed NCL (NCAR Graphics) was built for x86-64 (presumably under the Rosetta 2) but you are attempting to build the package for arm64. I'm not familiar with homebrew but a quick google search suggests maybe trying to install ncl with: arch -arm64 brew install ncl Hi, Thank you for ...

Dan_chan

Does that mean ARM could not support Plotting Package?

Dan_chan

Hello, I tried to install Plotting Package in my PC(MAC with apple silicon). But when I 'make', it errors like that. How to solve it? Thank you Warning: Type mismatch between actual argument at (1) and actual argument at (2) (INTEGER(4)/REAL(4)). /opt/homebrew/Cellar/open-mpi/4.1.4_1/bin/mpif90 -fre...

Ocean Modeling Discussion

Search found 38 matches

Difference between 'TIDE_START' and 'zero_phase_date'

Re: Query about FRCNAME Limitation in .in Files

Query about FRCNAME Limitation in .in Files

Re: different pm and pn using COAWST and Rutgers Toolkits

different pm and pn using COAWST and Rutgers Toolkits

Re: History file archiving intervals: bug in output.F?

Re: update of "Waves Effect on Currents" ?

update of "Waves Effect on Currents" ?

Re: boundary condition not absorb

Re: boundary condition not absorb

Re: boundary condition not absorb

Re: NaN occur in fisrt step

Re: boundary condition not absorb

Re: CPU time and MPI issues with nested grids

boundary condition not absorb

Re: Error while using contact.m : Unrecognized field name "contact".

Re: CPU time and MPI issues with nested grids

Re: some possible errors using matlab tool

Re: some possible errors using matlab tool

some possible errors using matlab tool

Re: Create boundary and initial file from seagrid and GLBa0.08

Re: Which tool is the stablest tools to create ROMS grid?

Re: Which tool is the stablest tools to create ROMS grid?

Re: Which tool is the stablest tools to create ROMS grid?

Re: no bitcount using roms_write_era5_NCARds633_frcfile.m

Re: no bitcount using roms_write_era5_NCARds633_frcfile.m

Re: no bitcount using roms_write_era5_NCARds633_frcfile.m

Re: no bitcount using roms_write_era5_NCARds633_frcfile.m

Re: Extraction of ERA 5 data for custom grid

Re: Extraction of ERA 5 data for custom grid

Re: no bitcount using roms_write_era5_NCARds633_frcfile.m

Re: no bitcount using roms_write_era5_NCARds633_frcfile.m

Re: no bitcount using roms_write_era5_NCARds633_frcfile.m

no bitcount using roms_write_era5_NCARds633_frcfile.m

Re: How to correct HYCOM SSH before using it as OBCs in ROMS

Re: Errors when install Plotting Package

Re: Errors when install Plotting Package

Errors when install Plotting Package