How to extract land/sea mask from region_mask.ieeei4?

[wadewei]

Hi all,

I am trying to run a LGM simulation with CESM1.2.2 and B1850 compset. I have a set of ocean restart files (gx1v6) and corresponding mask files to take advantage of. Unfortunately the bnd_topo file for CAM on hand has land/sea mask slightly different from the ocean files due to different interpolation strategy by different people. Can I modify the LAND_FRAC to somewhat match the ocean/sea ice's mask?

Thank you!

Wade

 

[slevis]

It seems worth trying your idea to see if it works.

 

[wadewei]

It seems worth trying your idea to see if it works.

Can you kindly provide guidance on how to extract the mask from region_mask.ieeei4, so that I can modify the LAND_FRAC accordingly?

 

[slevis]

In new versions of the land model (master branch on GitHub) we provide some tools in /tools/modify_input_files that you may or may not find useful. Look at the README instructions there.

@altuntas @islas might visualCaseGen be helpful for this user? Any other options that you or anyone else may wish to suggest?