Coupled Sturm snow (f2000.ne30_t232.BGC_CROP_SturmSnowtk)

[slevis-lmwg]

Description:
Same as #11 but F2000 instead of B1850.

The control (f2000.ne30_t232.BGC_CROP) is #14 and differs in the SourceMods as explained below.

Purpose is same:
See if increased vegetation at high northern latitudes can lower albedo in spring/early summer and cause earlier melt-out of the snowpack, and warm up the simulation at these latitudes.

---

Case directory:
Locally:
/glade/u/home/slevis/cases_LMWG_dev/f2000.ne30_t232.BGC_CROP_SturmSnowtk

---

Sandbox:
Locally:
/glade/work/hannay/cesm_tags/cesm2_3_alpha16b

---

user_nl_ changes:
Startup same as #6:

use_init_interp = .true.
fsurdat = '/glade/work/slevis/git/mksurfdata_toolchain/tools/mksurfdata_esmf/surfdata_ne30np4.pg3_SSP5-8.5_78pfts_CMIP6_1850-2100_c230227.nc'
finidat = '/glade/scratch/oleson/archive/ctsm51_cesm23a16bctsm51d130_ne30pg3ne30pg3mg17_GSWP3V1_SturmSnowtk_1850pAD/rest/0401-01-01-00000/ctsm51_cesm23a16bctsm51d130_ne30pg3ne30pg3mg17_GSWP3V1_SturmSnowtk_1850pAD.clm2.r.0401-01-01-00000.nc'

Continued as hybrid from year 33 to 96:

use_c13 = .true.
use_c14 = .true.
use_c13_timeseries = .true.
use_c14_bombspike = .true.
fsurdat = '/glade/work/slevis/git/mksurfdata_toolchain/tools/mksurfdata_esmf/surfdata_ne30np4.pg3_SSP5-8.5_78pfts_CMIP6_1850-2100_c230227.nc'
reseed_dead_plants = .true.

Also user_nl_cam:

fincl2 = 'TREFHT'
nhtfrq = 0,-24
mfilt  = 1,1

---

SourceMods:
/glade/u/home/slevis/cases_LMWG_dev/f2000.ne30_t232.BGC_SturmSnowtk/SourceMods/src.clm/SoilTemperatureMod.F90
plus mods found in #6:
clm_varpar.F90, surfrdMod.F90 mods for reading a ctsm5.2 fsurdat file
BUT omitted src.cam: clubb_intr.F90 hb_diff.F90 vertical_diffusion.F90 because these output vars not on master list.
Recommended SourceMods for next time.

Control case (#14) omits the mods to SoilTemperatureMod.F90.

---

Diagnostics:

f2000.ne30_t232.BGC_CROP_SturmSnowtk-f2000.ne30_t232.BGC_CROP years 77-96

---

Output:
(if still available)
/glade/scratch/slevis/archive/f2000.ne30_t232.BGC_CROP_SturmSnowtk
/glade/scratch/slevis/archive/f2000.ne30_t232.BGC_CROP <-- the control

---

Contacts:
@slevis-lmwg

---

Extra details:
./create_newcase --compset 2000_CAM60_CLM51%BGC-CROP_CICE%PRES_DOCN%DOM_MOSART_SGLC_SWAV --res ne30pg3_t232 --case /glade/u/home/slevis/cases_LMWG_dev/f2000.ne30_t232.BGC_CROP --run-unsupported
and
./create_clone --clone /glade/u/home/slevis/cases_LMWG_dev/f2000.ne30_t232.BGC_CROP/ --case /glade/u/home/slevis/cases_LMWG_dev/f2000.ne30_t232.BGC_CROP_SturmSnowtk

CLM Initial Conditions:
@olyson recommended this file from @olyson's offline case #4, which has some vegetation growing in the Arctic:
/glade/scratch/oleson/archive/ctsm51_cesm23a16bctsm51d130_ne30pg3ne30pg3mg17_GSWP3V1_SturmSnowtk_1850pAD/rest/0401-01-01-00000/ctsm51_cesm23a16bctsm51d130_ne30pg3ne30pg3mg17_GSWP3V1_SturmSnowtk_1850pAD.clm2.r.0401-01-01-00000.nc

[olyson]

You might have discussed this, but do we want a CLM51%BGC-Crop compset instead of CLM5? And do we want to include the new surface dataset?

[slevis-lmwg]

Good points. Thanks, Keith.

[slevis-lmwg]

@wwieder
Keith and I resolved the regrid issues with the diag. pkg.
Diagnostics are now posted above for this case.