b.e30_alpha06b.B1850C_LTso.ne30_t232_wgx3.139

Start by reviewing the case directory and the linked cesm_dev and CESM sandbox trees, then compare the listed user_nl_mom settings with case 138 (#59). Done would require a clear, maintained record of the experiment configuration and its available diagnostics or output; the issue does not identify a code change or test.

Purpose:

• Initializing from a G case at year 16
• Stronger salinity restoring
• Reverting vertical grid back to out-of-the-box

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Description:
Same as 138 (#59) except user_nl_mom is set to

INPUTDIR = "INPUT"
MAXTRUNC = 2000
REMAPPING_USE_OM4_SUBCELLS = False
BODNER_DETECT_MLD = True
MLE_USE_PBL_MLD = False
MLE_DENSITY_DIFF = 0.02
MLE%
USE_BODNER23 = True
USE_CR_GRID = True
CR_FILE = "mle-cr-tx2_3v2-v8_20250215.nc"
MIN_WSTAR2 = 1.0E-09
BLD_DECAYING_TFILTER = 8.64E+04
MLD_DECAYING_TFILTER = 2.592E+06
BLD_GROWING_TFILTER = 300.
MLD_GROWING_TFILTER = 3600.
%MLE
KPP%
KPP_CVt2 = 1.0
%KPP

INIT_LAYERS_FROM_Z_FILE = False
THICKNESS_FILE = "/glade/derecho/scratch/hannay/b.e30_alpha06b.B1850C_LTso.ne30_t232_wgx3.139/run/INPUT/g.e30_a06a.GJRAv4.TL319_t232_wgx3_hycom1_N75.2025.049.mom6.r.0016-0
1-01-00000.nc"
TS_FILE = "/glade/derecho/scratch/hannay/b.e30_alpha06b.B1850C_LTso.ne30_t232_wgx3.139/run/INPUT/g.e30_a06a.GJRAv4.TL319_t232_wgx3_hycom1_N75.2025.049.mom6.r.0016-01-01-00
000.nc"
VELOCITY_FILE = "/glade/derecho/scratch/hannay/b.e30_alpha06b.B1850C_LTso.ne30_t232_wgx3.139/run/INPUT/g.e30_a06a.GJRAv4.TL319_t232_wgx3_hycom1_N75.2025.049.mom6.r.0016-01
-01-00000.nc"

RESTART_CHECKSUMS_REQUIRED = FALSE

RESTORE_SALINITY = True
ADJUST_NET_FRESH_WATER_TO_ZERO = False
ADJUST_NET_SRESTORE_TO_ZERO = True

SALT_RESTORE_FILE = "state_restore_tx2_3_20230416.nc"
FLUXCONST = 1.667
SRESTORE_AS_SFLUX = True
MAX_DELTA_SRESTORE = 5.0

To start from teh default grid, we removed the lines:

ALE_COORDINATE_CONFIG = "HYBRID:hybrid_75layer_zstar2.50m-2025-02-14.nc,sigma2,dz"
MAX_LAYER_THICKNESS_CONFIG = "FILE:dz_max.nc,dz"
MAXIMUM_INT_DEPTH_CONFIG = "FILE:lev.nc,Z"

To make sure, mom starts from a G case, we added:

INIT_LAYERS_FROM_Z_FILE = False

For stronger salinity restoring

FLUXCONST = 0.1667->1.667

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Case directory:

• Locally (if still available):
  /glade/campaign/cesm/cesmdata/cseg/runs/cesm2_0/b.e30_alpha06b.B1850C_LTso.ne30_t232_wgx3.139

• On github:
  https://github.com/NCAR/cesm_dev/tree/b.e30_alpha06b.B1850C_LTso.ne30_t232_wgx3.139

---

Sandbox:

• Locally (if still available): /glade/work/hannay/cesm_tags/cesm3_0_alpha06b

• On github: https://github.com/ESCOMP/cesm/tree/cesm3_0_alpha06b

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Diagnostics:

• Diags (if available):
  https://webext.cgd.ucar.edu/BLT1850/b.e30_alpha06b.B1850C_LTso.ne30_t232_wgx3.139/

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Output:

• Raw output on derecho (if still available): /glade/derecho/scratch/hannay/archive/b.e30_alpha06b.B1850C_LTso.ne30_t232_wgx3.139/
• CAM Climos: /glade/campaign/cgd/amp/amwg/climo/b.e30_alpha06b.B1850C_LTso.ne30_t232_wgx3.139

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Contacts:
@cecilehannay @dlawrenncar @adamrher @PeterHjortLauritzen @JulioTBacmeister @slevis-lmwg @wwieder @olyson @gustavo-marques @fobryan3 @klindsay28 @dabail10 @duvivier @tilmes

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Extra details: