Hardening and frost mortality schemes in FATES

[mariuslam]

Description of changes

Changes in Atm2Lnd : averaging of temperature to feed the hardening scheme in fates

Specific notes

Contributors other than yourself, if any:
@huitang-earth @rosiealice @rgknox

CTSM Issues Fixed (include github issue #):
NGEET/fates#836

Are answers expected to change (and if so in what way)?

Any User Interface Changes (namelist or namelist defaults changes)?

Testing performed, if any:

[ekluzek]

@mvdebolskiy @rosiealice @rgknox can you comment on the status of this one? I know @mariuslam is gone, but is there someone else that can bring this in without him? It's also closely coupled to the FATES PR which has the real work in it. I'm just wondering how this should be handled.

[glemieux]

FYI, I have a local copy of the ctsm and fates side on my forks:

• https://github.com/glemieux/ctsm/tree/mariuslam/ctsm_hardening_06_10
• https://github.com/glemieux/fates/tree/mariuslam/sci.1.48.0_api.17.0.0_frost_14_02

[glemieux]

@mvdebolskiy @rosiealice @rgknox can you comment on the status of this one? I know @mariuslam is gone, but is there someone else that can bring this in without him? It's also closely coupled to the FATES PR which has the real work in it. I'm just wondering how this should be handled.

Cross posting to note @rosiealice recent comment on NGEET/fates#1130 (comment)

[mvdebolskiy]

@mvdebolskiy @rosiealice @rgknox can you comment on the status of this one? I know @mariuslam is gone, but is there someone else that can bring this in without him? It's also closely coupled to the FATES PR which has the real work in it. I'm just wondering how this should be handled.

I am not that familiar with FATES coding conventions, but I can try to rewrite Marius's code based on the current commit if you want. We'll discuss this with Rossie at the noresm-ctsm meeting this week.