b.e30_alpha09e_m.B1850C_MTso_Gris_Marbl.ne30_t233_wgx3.381

[gustavo-marques]

Purpose:
There have been too many advective CFL violations in the ocean. We have identified where these truncations occur and proposed modifications to the ocean topography to reduce flow speeds at these locations (Gustavo will add a discussion of this topic and a link here). This run assesses whether the modified ocean topography reduces CFL truncations without adversely affecting key climate metrics.

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Description:
Same as 377 (#382) but with changes in ocean topography. Adding the following to user_nl_mom:

TOPO_EDITS_FILE = "topo_edits_truncations_avg8.nc"

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Case directory:

• Locally (if still available):
  /glade/campaign/cesm/cesmdata/cseg/runs/cesm2_0/b.e30_alpha09d_m.B1850C_MTso_Gris_Marbl.ne30_t233_wgx3.381

• On github:
  https://github.com/NCAR/cesm_dev/tree/b.e30_alpha09d_m.B1850C_MTso_Gris_Marbl.ne30_t233_wgx3.381

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Sandbox:

• Locally (if still available): /glade/work/gmarques/cesm.sandboxes/cesm3_0_alpha09e_MARBL

• On github:

# get the cesm tag
git clone -b cesm3_0_alpha09e https://github.com/ESCOMP/cesm.git cesm3_0_alpha09e_MARBL

# Make the following change in the [submodule "mom"] section of .gitmodules:
cd cesm3_0_alpha09e_MARBL
emacs -nw .gitmodules
-        fxtag = mi_260625
+        fxtag = mi_260715

# check out the tag
./bin/git-fleximod update

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Diagnostics:

• Diags (if available):
  https://webext.cgd.ucar.edu/BMT1850/b.e30_alpha09d_m.B1850C_MTso_Gris_Marbl.ne30_t233_wgx3.381/

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Output:

• Raw output on derecho (if still available): /glade/derecho/scratch/gmarques/archive/b.e30_alpha09d_m.B1850C_MTso_Gris_Marbl.ne30_t233_wgx3.381/
• CAM Climos: /glade/campaign/cgd/amp/amwg/climo/b.e30_alpha09d_m.B1850C_MTso_Gris_Marbl.ne30_t233_wgx3.381

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

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Extra details:

user_nl_mom:

INPUTDIR = "INPUT"
TOPO_EDITS_FILE = "topo_edits_truncations_avg8.nc"
DIAG_COORD_DEF_RHO2 = "FILE:ocean_rho2_190917.nc,interfaces=rho2"
BBL_EFFIC = 0.2
MARBL_TRACERS_IC_FILE = "/glade/derecho/scratch/hannay/archive/b.e30_alpha09d_m.B1850C_MTso_Gris_Marbl.ne30_t233_wgx3.374/ocn/hist/b.e30_alpha09d_m.B1850C_MTso_Gris_Marbl.ne30_t233_wgx3.374.mom6.h.bgc.z.0136-12.nc"
MARBL_TRACERS_IC_FILE_IS_Z = True
ATM_ALT_CO2_OPT = "constant"
LEITH_BI_CONST = 80
MLE_TAPER_FN_DEPTH = 2000.
MLE_TAPER_FN_POWER = 4


! restart T/S from b.e30_alpha08o.B1850C_MTso.ne30_t232_wgx3.341.mom6.h.z.0238.nc

AGE_IC_FILE = "b.e30_alpha08o.B1850C_MTso.ne30_t232_wgx3.341.mom6.h.z.0238.nc"
AGE_IC_FILE_IS_Z = True
INIT_LAYERS_FROM_Z_FILE = True
TEMP_SALT_Z_INIT_FILE = "b.e30_alpha08o.B1850C_MTso.ne30_t232_wgx3.341.mom6.h.z.0238.nc"
TEMP_IC_VAR = "thetao"
SALT_IC_VAR = "so"
VELOCITY_CONFIG = "zero"
Z_INIT_FILE_PTEMP_VAR = "thetao" ! default = "ptemp"
Z_INIT_FILE_SALT_VAR = "so"