Stretched grid updates between 2.0.0 and 2.1.0

[lizziel]

I am planning to update the version of this repo used in GCHP. I would like to better understand the implications of the stretched grid updates that went into 2.1.0. I browsed the changes at v2.0.0...v2.1.0 but have not been able to find any documentation on why the changes were made, whether it was a bug fix or an objective improvement, or what the expected differences would be. Do you have this information? Thank you!

[mathomp4]

I am going to ping @wmputman as he is the one that made (most of) these changes that were brought in in #196

[mathomp4]

One note: If you are running the stretched grid, I'd probably trust the code that is in our upcoming v3.0 release (currently on feature/sdrabenh/gcm_v12). You can see diffs with main here:

main...feature/sdrabenh/gcm_v12

@wmputman has made many changes to the defaults for example:

   ! Rayleigh & Divergence Damping
   if (FV_Atm(1)%flagstruct%stretch_fac > 1.0) then
     FV_Atm(1)%flagstruct%RF_fast = .true.
     FV_Atm(1)%flagstruct%tau = 1.25
     FV_Atm(1)%flagstruct%rf_cutoff = 0.50e2
    ! 6th order default damping options
     FV_Atm(1)%flagstruct%nord = 3
     FV_Atm(1)%flagstruct%dddmp = 0.2
     FV_Atm(1)%flagstruct%d4_bg = 0.14
     FV_Atm(1)%flagstruct%d2_bg = 0.0
     FV_Atm(1)%flagstruct%d_ext = 0.0
     FV_Atm(1)%flagstruct%d2_bg_k1 = 0.20
     FV_Atm(1)%flagstruct%d2_bg_k2 = 0.15
     FV_Atm(1)%flagstruct%consv_te = 1.0

[lizziel]

Thanks @mathomp4. Do you know the last release that is compatible with MAPL 2.59?

[mathomp4]

Thanks @mathomp4. Do you know the last release that is compatible with MAPL 2.59?

@lizziel I mean, the latest release is compatible. As for what is the oldest one...I'm not sure. I don't see anything in the release notes about requiring a specific MAPL version, so even 2.0.0 might be happy with MAPL 2.59.