standalone atmosphere component

[ljdiao@gmail_com]

I am tring to run a standalone atmosphere component. I tried to create a caseby:create_newcase -case mycompset -res f19_f19 -user_compset 2000_CAM4%WCCM_XLND_XICE_XOCN_XROF_XGLC_XWAV -mach userdefinedThe error messages after the second cesm_setup are: infile is .../CESM/cesm1_2_0_bak/scripts/test/Buildconf/cplconf/cesm_namelist
ERROR: xocn is not a valid value for parameter ocn: valid values are docn,dom,socn,aquaplanet,pop2
ERROR: cam.buildnml.csh failed
ERROR: .../CESM/cesm1_2_0_bak/scripts/test/preview_namelists failed: 25344

thanks,

 

[jedwards]

The atmosphere needs some kind of data on it's lower boundary.    What you probably want is an F compset which has the longname

2000_CAM4_CLM40%SP_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV<br /><br />If you don't want an active land model either then you need to use aquaplanet FAQUAP

 

[ljdiao@gmail_com]

Hi, Jedwards: Thanks, But I also need WACCM. Then I have to buid my new compsets as I already posted?

 

[mmills]

The FW (F_2000_WACCM) compset will give you a constant year 2000 with data ocean and sea ice components, and an active land component. We do not support the use of WACCM without an active land model.

 

[ljdiao@gmail_com]

Hi,  Can I ask what is the differnce between dice and cice%pres then.thanks,

 

[mmills]

If you are running with an active atmosphere, then you need to use cice%pres, which includes a thermodynamic calculation of surface temperature based on prescribed ice coverage and thickness. The data ice model (dice) couples only with the ocean, and will not calculate the surface temperatures needed by an active atmosphere.

 

[ljdiao@gmail_com]

Hi, Mike: thanks. Could you talk something about why active land model and active river run-off model are included then?

 

[mmills]

The data land model is a "stub", and does not provide the atmosphere-land fluxes that are necessary to run an atmosphere model. There is no prescribed version of CLM.See this comment on the data land model in another forum post.