Ocean Modeling Discussion

Thanks John! in COAWST (and soon in Rutgers version) you just set the time step of the child and the parent in the ocean.in. You need to make sure that the child time steps equally into the parent step. so for example: parent step 60 sec, child 20 sec = ok parent step 60 sec, child 10 sec = ok ...

Hi ROMS forum, I was looking for the information about how frequent the parent grid and child grid communicate and exchange information in nested ROMS, but couldn't find it in the ocean.in ... I couldn't find it at wikiROMS either ... Where can I find such information? Is it something users can ...

I am using daily boundaries interpolated from existing model solutions obtained from our colleagues. I know daily BC might not be good enough, but that's all we have so far. We are trying to find higher freq. results. I didn't use VolCons. I think you have pointed me to the right direction. I had a ...

Hi ROMS forum, I am running a ROMS simulation with prescribed BC and initial condition from an existing model solution. However when I look at the time evolution of the velocities at the northern boundary and also an arbitrary cross-section in the middle of the domain, I see this really strange ...

Dear ROMS forum, I am trying to run a simulation for an area located on the US west coast. I extracted initial condition and boundary condition from a daily averaged solution of a donor grid (~3km resolution), and used it to force my 1km grid. I ran the 1km grid for about 1 week, and had a look at ...

In the version I use, 'inp_par.F' has: character (len=160) :: fname, line so my previous HISNAME is still shorter than the limit. Somehow I got the feeling that 'ocean.in' file has a length limit for each line ? I think the length changed between ROMS versions. The latest has 256 characters for all ...

Hi ROMS, I am getting a little confused by some interesting behavior of ROMS. So I am driving the model with monthly forcing/clim. The 'ocean_time' has the following values: ocean_time = 15 45 75 105 135 165 195 225 255 285 315 345 But I noticed some strange behaviors when running the model. When I ...

Hi Kate, I made the HISNAME shorter, and the model was able to run OK. Apparently the HISNAME is not supposed to be too long. But I am still very curious what's the length limit? I don't see anywhere this is mentioned in wikiroms. Thanks, Xiufeng The model has happily read your boundary conditions ...

Hi Kate, I have the same thing at line 90 of output.f90: WRITE (HISname(ng),10) HISbase(ng)(1:lstr-3),ifile Here is my HISNAME in ocean.in: HISNAME == /nas/xyang44/coawst/Projects/test_indv_grd_full_run/output/test_ca_his_level1.nc Is it because it is too long? Is there is length limit for file ...

Hi Kate and hbzong, You guys are right. I was using the scripts from the COAWST, and it didn't have BC on west and north ends. Thanks for your help! Xiufeng It seems that you use Matlab scripts in the directory roms_clm of COAWST to generate boundary file. In their case, west and north boundary are ...

I got it.
Thank you so much John!!

Xiufeng

jcwarner wrote:svn checkout https://coawstmodel.sourcerepo.com/coaw ... /data/tide .

Hi ROMS, Can someone please help me take a look at the error msg, and tell me what was wrong? I am supplying monthly climatology and forcing to ROMS, and 'ocean_time' is equal to: ocean_time = 15 45 75 105 135 165 195 225 255 285 315 345 All the other time variables (such as swf_time, sms_time ) are ...

Hi ROMS community, I am running ROMS with ' #define BULK_FLUXES ' turned on, and I am supplying it with the forcing file ' roms_narr_Jan2012.nc ', which contains the following variables: >> netcdf_load roms_narr_Jan2012.nc >> whos Name Size Bytes Class Attributes Uwind 300x120x25 7200000 double ...

Hi John,

I appreciate your response. I am looking forward to seeing a solution to this problem soon!

Thanks,
Xiufeng

wilkin wrote:Yes, there are bugs in the 3-level nesting code for the contacts file.

We're working on it and will announce a solution when we have it corrected.

Hi ROMS community, I just started to play with the newest version of ROMS, and one important update is the way it handles grid nesting. The new ROMS now requires users to provide a 'contact' file to specify the overlapping regions between nesting grids. However I ran into some difficulties while ...

Hi ROMS community, I have the matlab script to create tidal forcing for ROMS "create_roms_tides.m". The script includes the following lines: c:\work\models\COAWST_data\tide\adcirc_ec2001v2e_fix.mat COAWST_data\tide\tpx_uv.mat COAWST_data\tide\tpx_h.mat However those data files are not distributed ...

UPDATE: Problem solved! The cluster I am using has several different versions of ifort and NETCDF installed. Apparently I have to match the version numbers (if I use compiler ifort -v12.0.0.084, then I have to use the NETCDF that was compiled with the exactly same version of ifort, i.e. -v12.0.0.084 ...

Hi Kate, I did what you suggested, and added the netcdf library to the LD_LIBRARY_PATH. I then did a test run, and got the following errors: Initial basin volumes: TotVolume = 1.3165844712E+12 m3 MinVolume = 1.1469543535E+04 m3 MaxVolume = 1.0121271461E+09 m3 Max/Min = 8.8244762571E+04 forrtl: error ...

Hi, I guess my question is very similar to this one: https://www.myroms.org/forum/viewtopic.php?f=31&t=1992 But the difference is that I was able to compile ROMS successfully. The error showed when I ran ROMS. I was able to compile ROMS (as part of COAWST. ROMS only with no coupling) using ifort ...

Hi, I have been running ROMS with tidal forcing only (no wind forcing and surface flux is defined as '#define ANA_SMFLUX'). Now I intend to add wind surface forcing to the model on top of the tidal forcing. I have created separate wind forcing netcdf files (Uwind, Vwind) from NARR data. How should I ...

Hi Kate, I am looking for wind forcing for a particular historical period of time (say, daily wind in Jan., 2010) for somewhere on the US west coast. The spatial resolution is approx. a few kilometers. Do you mind providing some guidance on how your group creates wind forcing? Many thanks, Tides are ...

Hi, The wiki ROMS has a very nice documentation on how to create tidal forcing in ROMS (https://www.myroms.org/wiki/index.php/Tidal_Forcing). I wonder if there is a similar documentation for creating atmospheric forcing (wind forcing, etc) in ROMS? Any suggestions? Any comments are truly appreciated ...

Hi ROMS experts, USGS has put together a very nice tutorial for 2-level grid refinement/nesting in ROMS in its COAWST_User_Manual. But I am not so sure about how to determine the values of 'Lm' and 'Mm' for more refined grids (Lm and Mm are Number of I/J-direction INTERIOR RHO-points in the 'ocean ...

Hi, I wanted to download the OSU OTPS tidal forcing software and the database, but the following link on https://www.myroms.org/wiki/index.php/Tidal_Forcing is no longer valid: http://www.coas.oregonstate.edu/research/po/research/tide/region.html Can someone point me to the corrected link for the ...

we found this one a while ago. gfortran did not like the .eq. and wanted .eqv. I recoded this to use an integer 1/0 instead of T/F. So can you please do an svn update and see if it works? thanks, john Hey John, Thanks for fast reply. Should I update the entire COAWST package or ROMS only? I tried ...

Hi, I was trying to compile COAWST for the first time, and ran into some error: cd ./Build; /usr/bin/gfortran -c -frepack-arrays -O3 -ffast-math -I/etc/MCT/include -I/etc/MCT/include -I/usr/include/mpich2-x86_64/ -ffree-form -ffree-line-length-none waves_control.f90 waves_control.f90:131.14: IF (run ...

Firstly please igore the linking methods posted previously. The reson you have a "libnetcdff.a" instead of "libnetcdf.a" is because the version you use is netcdf4. One simple method I suggest is to download netcdf 3.6.3, compile and use that version. If you still want to use the available netcdf ...

The reason for this is the compiler is trying to find the file libnetcdf.a, but the netcdf fortran library in your system is libnetcdff.a. You could either link the libnetcdff.a to a libnetcdf.a or add "-lnetcdff" in your corresponding Compiler/*.mk file. Thanks a lot for reply. So I changed ...

I was trying to compile ROMS on my Linux computer. At first I used ifort compiler and had an error msg saying " This module file was not generated by any release of this compiler". According to the thread at "https://www.myroms.org/forum/viewtopic.php?f=31&t=2638", I figure it might be because ...