Ocean Modeling Discussion

It looks like the answer is that it depends, and this posting has lots of helpful information: https://www.myroms.org/forum/viewtopic.php?f=19&t=471 So the details of being able to set no/free slip at masked areas depends on the viscosity settings in your simulation, which should depend on your ...

In Utility/metrics.F, there is a code comment (at least in an older version I am looking at) that says !----------------------------------------------------------------------- ! Set slipperiness (no-slip) mask at PSI-points. !----------------------------------------------------------------------- ! ...

Perhaps you are missing the fact that u,v still have units of m/s while omega is simply 1/s I think that the terms are inconsistent regardless of omega's units because the time derivative term has an extra length scale in the denominator. Also, with units of 1/s, the omega term then has two extra l...

At risk of being super annoying, I have another possible typo: On WikiROMS, under Equations of Motion > Horizontal Boundary Conditions ( https://www.myroms.org/wiki/index.php/Equations_of_Motion#Horizontal_Boundary_Conditions ), it says Boundary conditions on these masked regions are straightforward...

I think there is another typo on WikiROMS in the section for horizontal and vertical advection ( https://www.myroms.org/wiki/index.php/Numerical_Solution_Technique#Horizontal_and_Vertical_Advection ). The units don't seem to be working out in the equation for advection of tracer C, or perhaps I am m...

The WikiROMS page on open boundary conditions ( https://www.myroms.org/wiki/index.php/Boundary_Conditions#Flather_boundary_condition ) appears to have the multiplying gravity terms mixed up between the Flather and Chapman boundary conditions. The Flather boundary condition should have \sqrt{g/h} not...

I would like to calculate the numerical horizontal dissipation occurring in my simulation, given that there is no explicit horizontal dissipation being modeled in it. My goal with this is to add in the effect of the horizontal mixing with the vertical closure scheme turbulent kinetic energy so as to...

With some sleuthing around, I do think this is the case. I will just state it again for clarity: Omega, the sigma-coordinate vertical velocity, that is output in ocean_his.nc files is in m/s and has already been multiplied by the Hz factor that is written out in ROMS documentation. Thanks for your d...

This post has been really useful for me, but I do have a clarification question relating to this and some of the documentation. The equations at various places ( http://marine.rutgers.edu/po/documentation/docs.php?doc=romsman&page=formulation&a=s_coordinate_system , for example) show that th...

Hi, I can try to help a little. There are instructions to install HDF5 and NetCDF on a Mac at http://scicompideas.blogspot.com/2009/11/building-hdf5-and-netcdf.html. He is using a Mac with 64-bit Snow Leopard on it but I imagine the instructions should still be close if not the same for your Mac ope...

I just found your solution to this problem. Thank you so much! I am using the same version of Matlab and this has been driving me nuts. I don't know much about netCDF files yet to guess a better solution, so for now I am just happy to stop having to quit out of Matlab continuously. Thanks again! Kri...

Hi everyone,

Is there an easy way to do a rigid lid approximation in ROMS? I want to try out the code in some test cases that require it. I searched on the wiki and forum but didn't find any references to it.

Thanks for any help!