[MITgcm-devel] seaice_get_dynforcing.F: CDAIR SEAICE_drag and OCEAN_drag

[Menemenlis, Dimitris (3248)]

I agree.  Changing a default can be a source of problems.
Your suggestion is a more sensible way to go,
and actually we already have started using better
values in many of the verification experiments:

bash-3.2$ grep -i seaice_drag */i*/data.seaice
lab_sea/input.fd/data.seaice:  SEAICE_drag        = 0.001,
lab_sea/input.hb87/data.seaice:  SEAICE_drag        = 0.001,
lab_sea/input/data.seaice:  SEAICE_drag        = 0.001,

and for many of the experiments checked in under
MITgcm_contrib, for example:

bash-3.2$ grep -i seaice_drag */i*/data.seaice */*/i*/data.seaice
arctic40km/input/data.seaice:      SEAICE_drag       = 0.0012
arctic40km/input_ad/data.seaice:      SEAICE_drag       = 0.0012
high_res_cube/input/data.seaice:      SEAICE_drag        = 0.00114,
arctic/cs_18km/input/data.seaice:      SEAICE_drag        = 0.00114,
arctic/cs_36km/input/data.seaice:      SEAICE_drag        = 0.00114,
arctic/cs_4km/input/data.seaice:      SEAICE_drag        = 0.00114,
high_res_cube/cs510_28lev/input/data.seaice:      SEAICE_drag        = 0.0012,
high_res_cube/cs510_adjoint/input_ad/data.seaice:      SEAICE_drag        = 0.0012,
high_res_cube/cube92/input/data.seaice:      SEAICE_drag        = 0.0012,
high_res_cube/cube92up/input/data.seaice:      SEAICE_drag        = 0.00114,
llc_hires/llc_1080/input/data.seaice:      SEAICE_drag        = 0.00114,
llc_hires/llc_2160/input/data.seaice:      SEAICE_drag        = 0.00114,
llc_hires/llc_4320/input/data.seaice:      SEAICE_drag        = 0.00114,

On Jan 6, 2014, at 5:42 PM, Jean-Michel Campin wrote:

> Hi Dimitris,
> 
> Changing default value can be a source of problems for users.
> 
> But if we change all the experiments that uses pkg/seaice with the 
> default SEAICE_drag to have explicitly: SEAICE_drag = 0.0011, 
> it will incite new users to use a better value for this parameter.
> It could also push old users to revisit their choice (if/when
> they update their code and check what has changed).
> 
> Now if you really want to change the default, changing the seaice
> experiment will need to be done anyway, so it could be a first good step.
> 
> Cheers,
> Jean-Michel