Slab ocean mode via data ocean.

[dbailey]

Hello all,
I wanted to highlight the new FAQ I have started on the slab ocean model (SOM) mode of CESM-DOCN. It is at:https://bb.cgd.ucar.edu/faq-data-ocean-slab-mode-docn-somThis mode is no longer supported through CAM and is now part of the data ocean component. Further questions on the E compset or CAM-SOM mode should go there.Dave

 

[climatemodelling@gmx_com]

I am using the SOM mode with the E compset and trying to do the following:I want to restore SSTs in certain regions to a fixed value while running the SOM model freely in other regions. To do this, I modified the 'mask' variable in the domain file (e.g. domain.ocn.gx3v7.090903.nc), by including additional integers (e.g. 2,3,4,5...) in certain regions. This way I can use the mask combined with logical expressions in the data ocean subroutine to access certain areas of the domain (The original file has only two integer values, 1 for ocean and 0 for land areas). However, I ran into a model crash that occurs if the mask variable in the domain file includes integers other than 1 and 0. The error message from the ccsm log file is attached below. Any tips what causes the problem in the domain_check_grid_mct routine with integers larger than 1? Thanks!
CalcWorkPerBlock: Total blocks:    16 Ice blocks:    12 IceFree blocks:     4 Land blocks:     0MCT::m_Router::initp_: GSMap indices not increasing...Will correctMCT::m_Router::initp_: RGSMap indices not increasing...Will correctMCT::m_Router::initp_: RGSMap indices not increasing...Will correctMCT::m_Router::initp_: GSMap indices not increasing...Will correct (domain_check_grid_mct) ERROR: incompatible domain grid coordinates(domain_check_grid_mct) : incompatible domain grid coordinates009.MCT(MPEU)::die.: from (domain_check_grid_mct)() (domain_check_grid_mct) ERROR: incompatible domain grid coordinates(domain_check_grid_mct) : incompatible domain grid coordinates004.MCT(MPEU)::die.: from (domain_check_grid_mct)() (domain_check_grid_mct) ERROR: incompatible domain grid coordinates(domain_check_grid_mct) : incompatible domain grid coordinates007.MCT(MPEU)::die.: from (domain_check_grid_mct)() (domain_check_grid_mct) ERROR: incompatible domain grid coordinates

 

[dbailey]

This should really go in the Data Models thread. I can't move just your comment though. Generally when users modify the CESM out-of-the-box configuration, we cannot support these configurations. However, what version of CESM are you using? I believe the 1.0 version had an issue with the gx3v7 grid domain. I would highly recommend using 1.1 or newer. Otherwise, try a domain file with a newer date on it.Dave

 

[climatemodelling@gmx_com]

I moved the question to the correct part of the forum. Should I delete my reply here? Thanks!

 

[dbailey]

Thanks. No you don't need to delete it here. I'll respond in the other forum.Dave