cam_cesm2_1_rel_54: adding smyle branch

[nanr]

Adding the smyle compset for the SMYLE project. Fixes #256

[gold2718]

@nanr, is it okay if this PR goes in without a regression test to protect the functionality? Is there a quick test that could be run?

[cacraigucar]

@nanr If you add me as a collaborator with write access on your fork of CAM in github, I can write up a ChangeLog and merge it directly from your fork. I can give you instructions on how to do this if you need that.

[gold2718]

@nanr, I want to triple check that you want this to go only into CESM2.1 (i.e., not CESM2.2 or current development).

[nanr]

@cacraigucar I think I should add you as a collaborator to my fork, if you tell me how to do that.

[nanr]

@gold2718 thanks for checking. I THINK the smyle branch should not be limited to cesm2.1. I think that it should be carried through to CESM2.2 / current development, and if so, let me know how to proceed.

[gold2718]

@nanr,
We will get it on CESM2.1 very soon. My understanding is that is the starting point for the SMYLE experiments -- is that correct?
We can then schedule it for the other branches. What is the use case for CESM2.2 -- is that part of the experiment plan?
For the CAM development branch, we will probably want a regression test (maybe even prebeta) to make sure nothing gets broken.

[cacraigucar]

@nanr On your github.com/nanr/CAM main page, go to settings. On the left, you'll see "manage access" . Click on that and then you should see "add collaborator". If you give me write access, that will be good.

[cacraigucar]

@nanr Please let me know if you'd like to make any changes to the ChangeLog. Or you can git pull , make your own edits and thengit commit and git push your changes back.

[cacraigucar]

@nanr Please let me know if you are okay with the ChangeLog. If you have no changes, I can go ahead and merge this into the cesm2_1 branch.

[nanr]

@cacraigucar ChangeLog looks good. I have no changes. Thanks Cheryl.