Switching FWsc2010climo from f09_f09_mg17 (~0.9°×1.25°) to ~1°×1° grid – required steps and potential issues

[jurymark]

Hello,

I am working with the FWsc2010climo compset. The default resolution is f09_f09_mg17. For my application, I would like to use a more regular ~1° × 1° grid instead.

From what I understand, this would require regridding all of the input data (initial conditions, prescribed ozone, CO₂, emissions, SST/ice boundary conditions, land surface data, etc.) onto the new grid. Beyond this, is there any other difficulty?

 

[hplin]

Hi Mark, thanks for writing. I believe a lot of the tunable parameters specified in the namelist would need to be re-tuned and scientifically validated for the new grid as well. Can I ask why the 0.9x1.25 grid won't work for your application? You could regrid the output onto 1x1 degree and that would be much easier.

 

[jurymark]

Hello Haipeng, thank you for your response. I need to assimilate some satellite data, then restart. The ultimate goal is to obtain some atmospheric parameters. Since the proposal requires the evaluation grid to be 1x1, I am concerned that the existing resolution interpolation will increase the error. The regridding you mentioned should be useful. I would like to ask, the result after assimilation still 1x1 here, it seems unfavorable for a restart ? Thanks again.