b.e30_alpha07g.B1850C_LTso.ne30_t232_wgx3.265

Compare issue 226 and issue 264 with the case description in the cesm_dev repository, then inspect the user_nl_mom settings and SourceMods/src.mom/MOM_hor_visc.F90 referenced here. Done means the case configuration and source modification are represented for b.e30_alpha07g.B1850C_LTso.ne30_t232_wgx3.265 and its expected diagnostics or output can be checked.

Purpose:
Same as 264 + Leithy Backscatter

Description:
Same as 226 (#226) except:

• add to user_nl_mom

INPUTDIR = "/glade/derecho/scratch/gmarques/g.e30_a07g.GW1850MARBL_JRA.TL319_t232_wgx3_hycom1_N75.2025.152/run/INPUT"
SMAGORINSKY_KH = False
MAXTRUNC = 1.0E6

! Leith+E Settings
TAPER_LEITHY = True
LEITH_BI_CONST = 85.0
LEITHY_CK = 1.0

! Background KH
USE_KH_BG_2D = True
KH_BG_2D_FILENAME = "KH_BG_2D.nc"
KH_BG_2D_VARNAME = "KH"

! Resolution scaling:
!! GM & Redi the same
!! Don't apply scaling to Laplacian viscosity, which is the 2D background
RESOLN_SCALED_KH = False
RESOLN_SCALED_KHTH = True  ! Already using, here for clarity
RESOLN_SCALED_KHTR = True  ! Already using, here for clarity
KH_RES_SCALE_COEF = 0.5    ! Tighter around the equator
KH_RES_FN_POWER = 6        ! Already using, here for clarity
VISC_RES_SCALE_COEF = 0.5  ! Used for KHTR
VISC_RES_FN_POWER = 6      ! Used for KHTR
INTERPOLATE_RES_FN = True  ! Only computes resolution fn once, then interpolates

• add SourceMods/src.mom

/glade/work/gmarques/cesm.cases/G/g.e30_a07g.GW1850MARBL_JRA.TL319_t232_wgx3_hycom1_N75.2025.152/SourceMods/src.mom/MOM_hor_visc.F90 

Case directory:

• Locally (if still available):
  /glade/campaign/cesm/cesmdata/cseg/runs/cesm2_0/b.e30_alpha07g.B1850C_LTso.ne30_t232_wgx3.265

• On github:
  https://github.com/NCAR/cesm_dev/tree/b.e30_alpha07g.B1850C_LTso.ne30_t232_wgx3.265

Sandbox:

• Locally (if still available): /glade/work/hannay/cesm_tags/cesm3_0_alpha07g

• On github: https://github.com/ESCOMP/cesm/tree/cesm3_0_alpha07g

Diagnostics:

• Diags (if available):
  https://webext.cgd.ucar.edu/BLT1850/b.e30_alpha07g.B1850C_LTso.ne30_t232_wgx3.265/

Output:

• Raw output on derecho (if still available): /glade/derecho/scratch/hannay/archive/b.e30_alpha07g.B1850C_LTso.ne30_t232_wgx3.265/
• CAM Climos: /glade/campaign/cgd/amp/amwg/climo/b.e30_alpha07g.B1850C_LTso.ne30_t232_wgx3.265

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

Extra details: