CTSM5.3 spinup and hist at f09

[wwieder]

Lot's of moving pieces to get a 5.3 spinup started. I'll take notes here.

Description:

5.3 surface data (just f09 for now), including:

• Bill's glacier changes
• Fang's new fire datasets
  /glade/derecho/scratch/fangli/firedata/abm_0.5x0.5_simyr2000.c240821.nc for peak month of crop fires based on GFED5 for Li2024
  /glade/derecho/scratch/fangli/firedata/peatf_0.5x0.5_simyr2000.c240821.nc for new peatland fraction map for Li2024 based on Gumbricht et al. (2017) for regions south of 40ºN and Hugelius et al. (2020) for other areas

Code:

• Sam L's CTSM5.3 branch CTSM#2500 updated to master + PPE B4B dev work #2689

• Answer changing tag defaults turned on (excess ice, AC & dust)

• New fire code (default fire_method changed to li2024crujra)

• Will not include alternative Sturm parameterization (Keith's experiment in 1850 with ctsm5.3 fsurdat, excess ice ON, A/C ON, and modified Sturm (ctsm52018_f09_xsiceON_acON_SturmExp1_[AD, SASU, pSASU, hist]) #63, maybe less critical and potentially conflict with the hand tuned parameterization), we'll consider this as tuning for later

Parameter file that combines:. @samsrabin has this done

• Li2024 from the fire PR
• Linnia's hand tuned parameter file /glade/u/home/linnia/clm5ppe/pyth/CLM6_dev_handtuning/final_paramfiles/ctsm60_params.c240208_lh.nc
• B4B dev parameter changes, for PPE (not critical for spinup, but needed for the 5.3.0 tag)

---

Case directory:
Locally:
/glade/u/home/slevis/cases_LMWG_dev/ctsm52026_f09_AD DONE
/glade/u/home/slevis/cases_LMWG_dev/ctsm52026_f09_SASU DONE
/glade/u/home/slevis/cases_LMWG_dev/ctsm52026_f09_pSASU DONE
/glade/u/home/slevis/cases_LMWG_dev/ctsm52026_f09_hist DONE

---

Sandbox:
Locally:
/glade/work/slevis/git/ans_chging_tag_1 (sorry if the directory name is confusing)
git branch: new_rawpftlai
git describe: ctsm5.2.026-28-g40aacf6e9 (before making and pushing new branch tag)
git describe: branch_tags/ctsm5.3.n01_ctsm5.2.026

---

user_nl_ changes:
AD

use_init_interp = .true.
finidat = '/glade/derecho/scratch/slevis/archive/ctsm52018_f09_xsiceON_acON_pSASU/rest/0201-01-01-00000/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc'
fsurdat = '/glade/work/slevis/git/mksurfdata_toolchain/tools/mksurfdata_esmf/surfdata_0.9x1.25_hist_1850_78pfts_c240826.nc'
paramfile = '/glade/work/samrabin/ctsm_fire-li2024-pr2_paramfiles/ctsm60_params.c240822.nc'

! turn off shifting cultivation
do_grossunrep = .false.

! do this for spinup
reseed_dead_plants = .true.

! do this for isotopes
use_c13 = .true.
use_c14 = .true.
use_c13_timeseries = .true.
use_c14_bombspike = .true.

SASU difference from AD

20c20,21
< finidat = '/glade/derecho/scratch/slevis/archive/ctsm52026_f09_AD/rest/0041-01-01-00000/ctsm52026_f09_AD.clm2.r.0041-01-01-00000.nc'
---
> use_init_interp = .true.
> finidat = '/glade/derecho/scratch/slevis/archive/ctsm52018_f09_xsiceON_acON_pSASU/rest/0201-01-01-00000/ctsm52018_f09_xsiceON_acON_pSASU.clm2.r.0201-01-01-00000.nc'

pSASU diff from SASU

20c20
< finidat = '/glade/derecho/scratch/slevis/archive/ctsm52026_f09_SASU/rest/0161-01-01-00000/ctsm52026_f09_SASU.clm2.r.0161-01-01-00000.nc'
---
> finidat = '/glade/derecho/scratch/slevis/archive/ctsm52026_f09_AD/rest/0041-01-01-00000/ctsm52026_f09_AD.clm2.r.0041-01-01-00000.nc'

hist diff from pSASU

5c5,6
<  co2_type = 'diagnostic'
---
>  co2_ppmv = 284.7
>  co2_type = 'constant'
13c14
<  finidat = '/glade/derecho/scratch/slevis/ctsm52026_f09_pSASU/run/ctsm52026_f09_pSASU.clm2.r.0421-01-01-00000.nc'
---
>  finidat = '/glade/derecho/scratch/slevis/ctsm52026_f09_SASU/run/ctsm52026_f09_SASU.clm2.r.0271-01-01-00000.nc'
28c29
<  irrigate = .true.
---
>  irrigate = .false.
71d71
<  use_init_interp = .true.
86d85
<  model_year_align_ndep = 1850
90c89
<  stream_fldfilename_ndep = '/glade/campaign/cesm/cesmdata/inputdata/lnd/clm2/ndepdata/fndep_clm_hist_b.e21.BWHIST.f09_g17.CMIP6-historical-WACCM.ensmean_1849-2015_monthly_0.9x1.25_c180926.nc'
---
>  stream_fldfilename_ndep = '/glade/campaign/cesm/cesmdata/inputdata/lnd/clm2/ndepdata/fndep_clm_WACCM6_CMIP6piControl001_y21-50avg_1850monthly_0.95x1.25_c180802.nc'
93c92
<  stream_year_last_ndep = 2015
---
>  stream_year_last_ndep = 1850
96d94
<  model_year_align_popdens = 1850
101c99
<  stream_year_last_popdens = 2016
---
>  stream_year_last_popdens = 1850
104d101
<  model_year_align_urbantv = 1850
108c105
<  stream_year_last_urbantv = 2106
---
>  stream_year_last_urbantv = 1850
168,173d164
<  do_harvest = .true.
<  do_transient_crops = .true.
<  do_transient_lakes = .true.
<  do_transient_pfts = .true.
<  do_transient_urban = .true.
<  flanduse_timeseries = '/glade/work/slevis/git/mksurfdata_toolchain/tools/mksurfdata_esmf/landuse.timeseries_0.9x1.25_hist_1850-2023_78pfts_c240826.nc'
182d172
<  check_dynpft_consistency = .false.
185d174
<  init_interp_method = 'general'
331a321
>  reseed_dead_plants = .true.
361,364d350
<  stream_fldfilename_exice = '/glade/campaign/cesm/cesmdata/inputdata/lnd/clm2/paramdata/exice_init_0.125x0.125_c20220516.nc'
<  stream_mapalgo_exice = 'bilinear'
<  stream_meshfile_exice = '/glade/campaign/cesm/cesmdata/inputdata/lnd/clm2/paramdata/exice_init_0.125x0.125_ESMFmesh_cdf5_c20220802.nc'
<  use_excess_ice_streams = .true.

---

SourceMods:
NONE

---

Diagnostics:
Diagnostics for last 20 years of pSASU compared to last 20 years of pSASU for ctsm52018_f09_xsiceON_acON_pSASU (Issue #62 ):

https://webext.cgd.ucar.edu/I1850/ctsm52026_f09_pSASU/lnd/ctsm52026_f09_pSASU_401_420-ctsm52018_f09_xsiceON_acON_pSASUl_221_240/setsIndex.html

Standard diagnostics for historical compared to #62

https://webext.cgd.ucar.edu/I20TR/ctsm52026_f09_hist/lnd/ctsm52026_f09_hist_2004_2023-ctsm52018_f09_xsiceON_acON_hist_2004_2023/setsIndex.html

ILAMB diagnostics:

https://webext.cgd.ucar.edu/I20TR/ctsm52026_f09_hist/lnd/_build_ctsm52026_f09_hist/
Note that the labeling refers to issue number, e.g, this issue number, I65.

Also see this for survivability and max LAI:

https://docs.google.com/presentation/d/1m-9wXGc3Jh8J4Vi4VUjw4U-hI7YQe-5E/edit?usp=drive_link&ouid=104026900087612515425&rtpof=true&sd=true

---

Output:
Output (if still available):
/glade/scratch/$USER/archive/$CASE/

---

Contacts:
@slevis-lmwg

---

Extra details:
We will cycle 1901-1920 of datm, starting with finidat from #62, and completing this sequence:
AD 40 yrs --> SASU 270 yrs (~16% land area in disequilibrium in TOTECOSYSC) --> pSASU 420 yrs (3.43%) --> hist modeled after Daniel's approach described here:
We ran a long spinup for the default parameters and used that as initial conditions for all ensemble members. Then for each new parameter set we ran, 20year AD, 80 years SASU, 40 years postSASU cycling a ten year forcing dataset.

./create_newcase --case ~/cases_LMWG_dev/ctsm52026_f09_AD --compset I1850Clm60BgcCropCru --res f09_g17 --run-unsupported
./create_clone --clone ~slevis/cases_LMWG_dev/ctsm52026_f09_AD --case ~slevis/cases_LMWG_dev/ctsm52026_f09_SASU
./create_clone --clone ~slevis/cases_LMWG_dev/ctsm52026_f09_SASU --case ~slevis/cases_LMWG_dev/ctsm52026_f09_pSASU
./create_clone --clone ~slevis/cases_LMWG_dev/ctsm52018_f09_xsiceON_acON_hist/ --case ~slevis/cases_LMWG_dev/ctsm52026_f09_hist

[samsrabin]

Are the b4b parameter file changes the ones from this PR?

[wwieder]

Are the b4b parameter file changes the ones from this PR?

Yes, I'll link above too for clarity

[samsrabin]

I made new ctsm60 parameter files , starting with @slevis-lmwg's most recent (ctsm60_params.c240814.nc), then applying Linnia's changes, then applying Fang's.

I checked for conflicts at both steps. Sam L. and Linnia modified different parameters, so nothing there. Linnia and Fang both modified froot_leaf, but fortunately different PFTs, so no conflicts there either.

The files are in /glade/work/samrabin/ctsm_fire-li2024-pr2_paramfiles/:

1. ctsm60_params.c240822.li2021gswpfrc.nc: The version with just Linnia's changes added to Sam L.'s. This should be the default for clm6_0 runs with the li2021gswpfrc fire_method.
2. ctsm60_params.c240822.li2024gswpfrc.nc: Applied Fang's new parameterizations for GSWP3 forcings onto the above paramfile. Should be the default for clm6_0 runs with the li2024gswpfrc fire_method.
3. ctsm60_params.c240822.li2024crujra.nc: Applied Fang's new parameterizations for CRU-JRA forcings onto the above paramfile. Should be the default for all other clm6_0 runs.

I didn't think I should apply Linnia's and Fang's changes to any of the other paramfiles (clm45_params, clm50_params, ctsm51_params, ctsm60_params_cn30), but let me know if I'm wrong there. If I'm not, then the c240814 versions of those parameter files can just be copied to c240822 versions.

[wwieder]

Thanks for merging these, Sam. I'm curious what changes made to feoot_leaf (and for what reason)?

I don't think we want to change parameter files for older physics versions.

We'll likely have to discuss how best to handle options for different datm options, but that can happen over the fall.

[samsrabin]

Left-hand side of <> gives the values Linnia and Fang started with; right gives their new values:

$ nccmp -dfs -v froot_leaf $linnia_base $linnia
DIFFER : VARIABLE : froot_leaf : POSITION : [1] : VALUES : 1.5 <> 1.7693
DIFFER : VARIABLE : froot_leaf : POSITION : [2] : VALUES : 1.5 <> 1.7945
DIFFER : VARIABLE : froot_leaf : POSITION : [11] : VALUES : 1.2 <> 1.7915
DIFFER : VARIABLE : froot_leaf : POSITION : [12] : VALUES : 1.2 <> 1.7924

$ nccmp -dfs -v froot_leaf $fang_base $fang_gswp
DIFFER : VARIABLE : froot_leaf : POSITION : [6] : VALUES : 1.5 <> 0.5
DIFFER : VARIABLE : froot_leaf : POSITION : [14] : VALUES : 1.5 <> 0.5

$ nccmp -dfs -v froot_leaf $fang_base $fang_crujra
DIFFER : VARIABLE : froot_leaf : POSITION : [6] : VALUES : 1.5 <> 0.5
DIFFER : VARIABLE : froot_leaf : POSITION : [14] : VALUES : 1.5 <> 0.5

My note from Fang says, "Changed froot_leaf of tropical BDT and C4 grass to 0.5, so more new carbon goes to the leaves to represent faster post-fire recovery as observed."

[wwieder]

Thanks. Let's see how things look in the initial 5.3 simulations and we can evaluate

[lifang0209]

@wwieder @samsrabin I modified froot_leaf for BDT tropical (PFT=6) and C4 grass (PFT=14) in the parameter file because in tropical savannas, where fires are frequent, observations show that root burning and damage during fires are much less than leaf burning for these two PFTs and leaves recover quickly after fires. This means new carbon should be allocated more to leaves than to roots for the 2 PFTs