Ocean Modeling Discussion

Dear ROMS users, I am trying to set up a very high resolution model with grid size of around 40*2500*3000. The initial conditions file itself is around 25GB. So, I'm assuming the bare minimum output (with only primitive state variables written) will be of the same size. I'm facing memory as well as ...

Thanks Kate..!!

Hi ROMS users I am saving Hsbl (depth of oceanic surface boundary layer) and Hbbl (depth of oceanic bottom boundary layer) variables in my average output file. I am using LMD vertical mixing scheme. When I plot Hsbl, I observe that some of the values (generally near river mouth) are positive and the ...

Hello ROMS users I have been using matlab toolbox for making surface forcing files for a while now. Recently I've decided to use the toolbox for making boundary as well as initial conditions files. Upon inspection, I've decided to modify d_mercator2roms.m for making initial file and d_obc_mercator.m ...

Thank you very much Kate. That's really helpful

kate wrote:The forcing extent has to be at least as big as the ROMS grid. I have my winds on a global grid, then I can use it on any ROMS grid.

You mean I can have forcing fields on a grid that is larger than my ROMS application grid?

Hi ROMS users I know that ROMS can interpolate the surface forcing data from a lat-lon grid onto a ROMS application grid, but I am confused as to the lat-lon extent of the forcing data that we can provide. For example, in my grid file, the corner latitudes and longitudes are LowerLeft(-30S,30E ...

Sorry for late reply but I communicated my cluster admin that there is no problem with the model. After resolving an issue of password less login, I tried to run the model and got the following as output in the log file. [mpiexec@tyrone-node16] HYD_pmcd_pmiserv_send_signal (./pm/pmiserv/pmiserv_cb.c ...

Removed the blank lines. Still the same log. Did a tracejob on jobid, the output is as follows: [casparga@tyrone-cluster upwelling]$ tracejob 78891 /var/spool/torque/server_priv/accounting/20171111: Permission denied Job: 78891.tyrone-cluster 11/11/2017 12:29:47 S enqueuing into batch, state 1 hop 1 ...

Please find my job submit submit script in the attachment. It used to run, albeit with a little difference in execute line.

Yes Kate. That's exactly what's happening. Please help.

I didn't get any output. The log file is supposed to show something like this: -------------------------------------------------------------------------------- Model Input Parameters: ROMS/TOMS version 3.7 Wednesday - November 8, 2017 - 2:50:07 PM ...

Hi ROMS users I have been trying to run a roms application, but after submitting my job (parallel) to the cluster, it exits from the queue after running for 1 second. I checked the log file and it displays the following message ...

Dear ROMS users I have a confusion regarding nudging in ROMS. In my application domain, I have 2 open boundaries. The boundary conditions file is prepared using climatology(WOA09) for salinity and temperature and there is no seperate climatology file. Open boundary conditions for salinity and ...

Hi ROMS users I'm running a simulation wherein I provide the surface forcing i.e. stresses, E-P and net heat flux directly (i.e. without using Bulk Formulae). I am providing them after interpolating from data sets to ROMS application grid. I was wondering if it is possible to provide these forcing ...

Thank you very much rsignell. That is very helpful.

Thank you very much rsignell. Although I am looking for a way to do it using filled contours (without having to interpolate the variable on a fixed set of depth values), your notebook is very helpful. Thanks a lot.

Hello ROMS users I am trying to show a vertical section of salinity (or any 3D or 4D variable) along a latitude using filled contours. Along x-axis I have values of Longitudes or distance along the section (vector) but along y-axis, I have a 2D array of depths of salinity since depths at each lat ...

Thanks everyone. The rationale provided by shchepet is indeed easy to understand and implement. Thank you very much.

Thank you very much kate and shchepet. I used to use roms_tools but the algorithm it uses to calculate the angle was difficult to understand. Now I use matlab routines by Arango, but couldn't find an algorithm to compute angle.

Thank you very much.

Hi ROMS users In the ROMS grid file, the description of the variable 'angle' is the angle between XI-axis and EAST. My question is how do you determine this angle? If I want to run a simulation for Indian Ocean, how will I determine this angle? Also, should the units of angle be degrees or radians ...

Hi ROMS users This question is about the mathematical treatment of rivers in ROMS. If rivers are treated as active boundary conditions, to which equations they act as boundary conditions? One equation would obviously be the salinity transport equation. But river runoff does impart some momentum to ...

Thanks kate..!!

Thanks kate. But, would it not affect the calculation of other fluxes, since many of them depend on the Monin-Obukhov similarity parameters (e.g. Wstar)? I want only stresses to be zero while retaining all other surface forcings.

Hi ROMS users I am running a simulation of Bay of Bengal to study it's circulation. I need to run a case where the wind forcing is switched off. If I do not define BULK_FLUXES, it is straightforward to switch the winds off by specifying 0 values for it in the stress files. I want to know if there is ...

Thank you very much Kate.

Hi ROMS users I have two questions. 1.If I define BULK_FLUXES and provide u and v winds, do I need to provide sustr and svstr i.e. surface U and V momentum stress values? 2. If I am not to define BULK_FULXES, QCORRECTION and SRELAXATION, will it work if I don't provide any SST and SSS data in ...