how to turn off sea ice

[bnarapus@gmu_edu]

hello all:

I am running the cam3.0 with SOM enabled CAM with water points all over the land (aquaplanet mode). I was wondering whether there is a simple way to turn off the CSIM4 sea-ice model, so that I dont get any ice fraction. I started with the initial conditions SICTHK = 0 everywhere in the input files and also I reversed the logic in ice_data.F90 in 'models/ice/csim4' directory to look like the following.

#if (defined COUP_SOM )
do lchnk=begchunk,endchunk
aice(:pcols,lchnk) = 0.0
previcefrac(:pcols,lchnk) = 0.0
sicthk(:pcols,lchnk) = 0.0
call update_ocnice(lchnk)
end do
return
#end if

seems this is not enough as I get ice formation above 60 N and 60 S. Can anybody know how to turn off the csim4 or to make sure there is no ice formation. Any suggestion would be of good help.

thank you very much,
bala.

 

[jianlu]

Hi Bala,

I have exactly the same question. I just started to work on the aquaplanet version of the cam3.0/cam3.5. I have not clue how to modify the configuration or namelist to make it an aquaplanet. Since you have quite some experience on cam aquaplanet, may you give me some instruction on how to do that.

Have you figured out how to turn off the ice also? If so, any tips on that too?

Thanks.

Jian