Francis Vitt

> Thinking about it initially this should only be TRUE, even when connected to CAM, until CAM is updated to be able to control the dust_emis drv_flds_in namelist. > >...

The difference I see is the new MSIS wants altitude rather than pressure and the date format is different.

Yes Z3 is always available -- it is derived from `state%zm` which is updated each time step: ``` do k = 1, pver z3(:ncol,k) = state%zm(:ncol,k) + state%phis(:ncol)*rga end do...

@rgarc1a No, the ubc in WACCM is not a function of latitude only -- `msis_ubc` is set as a function of column. See https://github.com/ESCOMP/CAM/blob/c97e39c1b97562fe84fd4a16bdc6042c599727aa/src/chemistry/utils/mo_msis_ubc.F90#L170C1-L194C1 It seems we could set the...

Nothing is simple in this model. However, we should be able to deal with restart issues.

> Are there plans to bring biological effects in to this PR? @coupewx has coupled a version of WACCM4 with TUV (from @cbardeen) to POP in CESM2 to compute UV...

@mattldawson Is the version of TUVx used in your branch near the head of NCAR/tuv-x? Do you have a test case for WACCM including the json file needed for Js...

Should we include the fix to this issue as well? https://github.com/ESCOMP/CAM/issues/876 See PR https://github.com/ESCOMP/CAM/pull/878

This is my cime PR: https://github.com/ESMCI/cime/pull/4559 And cime branch: https://github.com/fvitt/cime/tree/derecho_mods

> My colleague using the cesm2.2.2 release tag is getting greater than 2X slow-down just by turning on 2 tapes of 3-hourly output. These are 1/8deg SE var-res simulations. >...