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Merge pull request #3711 from ekluzek/tweaked_ciso_file
ctsm5.4.013: ne30 IC to patch Greenland snow hole, Tweaked C14 Isotope file
2 parents aee764b + 3a705fd commit 7d4a371

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‎bld/namelist_files/namelist_defaults_ctsm.xml‎

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@@ -148,8 +148,8 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
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<atm_c14_filename use_c14=".true." use_c14_bombspike =".true." ssp_rcp="SSP5-8.5" cmip_era="cmip6">lnd/clm2/isotopes/atm_delta_C14_CMIP6_SSP5B_3x1_global_1850-2100_yearly_c181209.nc</atm_c14_filename>
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<!-- Settings for Carbon Isotope streams -->
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<stream_fldfilename_atm_c14 use_c14=".true." use_c14_bombspike =".true." ssp_rcp="hist" cmip_era="cmip7">lnd/clm2/isotopes/ctsmforc.Graven.atm_delta_C14_CMIP7_360x720_1700-2023_yearly_v3.0_c251117.nc</stream_fldfilename_atm_c14>
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<stream_meshfile_atm_c14 use_c14=".true." use_c14_bombspike =".true." >share/meshes/360x720_120830_ESMFmesh_c20210507_cdf5.nc</stream_meshfile_atm_c14>
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<stream_fldfilename_atm_c14 use_c14=".true." use_c14_bombspike =".true." ssp_rcp="hist" cmip_era="cmip7">lnd/clm2/isotopes/ctsmforc.Graven.atm_delta_C14_CMIP7_360x720_1700-2023_yearly_v3.0_tweaked_latlons_c260108.nc</stream_fldfilename_atm_c14>
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<stream_meshfile_atm_c14 use_c14=".true." use_c14_bombspike =".true." >share/meshes/360x720_120830_ESMFmesh_tweaked_latlons_c20260108.nc</stream_meshfile_atm_c14>
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<!-- The following are only set if both use_c14 and use_c14_bombspike are TRUE -->
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<stream_year_first_atm_c14 sim_year="2018" sim_year_range="constant">2018</stream_year_first_atm_c14>
@@ -926,9 +926,11 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
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<init_interp_attributes sim_year="1850" use_cndv=".false." use_fates=".false." phys="clm6_0" use_cn=".false."
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>hgrid=0.9x1.25 maxpft=17 mask=tx2_3v2 use_cn=.false. use_crop=.false. glc_nec=10 do_transient_pfts=.false. use_excess_ice=.true.
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</init_interp_attributes>
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<!-- For now comment this out, until we also have an SP finidat file to use
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<init_interp_attributes sim_year="1850" use_cndv=".false." use_fates=".false." phys="clm6_0" use_cn=".false."
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>hgrid=ne30np4.pg3 maxpft=17 mask=tx2_3v2 use_cn=.false. use_crop=.false. glc_nec=10 do_transient_pfts=.false. use_excess_ice=.true.
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</init_interp_attributes>
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-->
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<init_interp_attributes sim_year="2000" use_cndv=".false." use_fates=".false." phys="clm6_0" use_cn=".false."
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>hgrid=0.9x1.25 maxpft=17 mask=tx2_3v2 use_cn=.false. use_crop=.false. glc_nec=10 do_transient_pfts=.false. use_excess_ice=.true.
@@ -1419,12 +1421,14 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
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phys="clm6_0"
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>lnd/clm2/initdata_esmf/ctsm5.4/ctsm5.4.CMIP7_ciso_ctsm5.3.075_SP_f09_127_1850.clm2.r.0102-01-01-00000.nc
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</finidat>
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<!-- comment out the SP case and use the BGC case for now
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<finidat hgrid="ne30np4.pg3" maxpft="17" mask="tx2_3v2" use_cn=".false." use_cndv=".false." use_fates=".false."
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ic_ymd="18500101" sim_year="1850" do_transient_pfts=".false." use_excess_ice=".true."
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ic_tod="0" glc_nec="10" use_crop=".false."
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phys="clm6_0"
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>lnd/clm2/initdata_esmf/ctsm5.4/ctsm5.4.CMIP7_ciso_ctsm5.3.075_SP_ne30_126_1850.clm2.r.0102-01-01-00000.nc
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</finidat>
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-->
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<finidat hgrid="0.9x1.25" maxpft="17" mask="tx2_3v2" use_cn=".false." use_cndv=".false." use_fates=".false."
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ic_ymd="20000101" sim_year="2000" do_transient_pfts=".false." use_excess_ice=".true."
@@ -1446,12 +1450,12 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
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phys="clm6_0"
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>lnd/clm2/initdata_esmf/ctsm5.4/ctsm5.4.CMIP7_ciso_ctsm5.3.075_f09_124_pSASU.clm2.r.0161-01-01-00000.nc
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</finidat>
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<!-- Corresponding ne30 -->
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<!-- ne30 case with the Greenland snow "hole" patched -->
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<finidat hgrid="ne30np4.pg3" mask="tx2_3v2" use_cn=".true." use_cndv=".false." use_fates=".false."
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sim_year="1850" do_transient_pfts=".false." use_excess_ice=".true."
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use_crop=".true."
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phys="clm6_0"
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>lnd/clm2/initdata_esmf/ctsm5.4/ctsm5.4.CMIP7_ciso_ctsm5.3.075_ne30_123_pSASU.clm2.r.0161-01-01-00000.nc
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>lnd/clm2/initdata_esmf/ctsm5.4/ctsm5.4.CMIP7_ciso_ctsm5.4.004_bgc_ne30_130_pSASU_greenland.clm2.r.0121-01-01-00000.nc
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</finidat>
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<!-- Corresponding f19 -->
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<finidat hgrid="1.9x2.5" mask="tx2_3v2" use_cn=".true." use_cndv=".false." use_fates=".false."

‎cime_config/testdefs/ExpectedTestFails.xml‎

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<comment>Restart issues with default "inactive" fields added to history by hist_all_fields.</comment>
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</phase>
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</test>
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<test name="MKSURFDATAESMF_P128x1.f10_f10_mg37.I1850Clm50BgcCrop.derecho_intel">
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<phase name="NLCOMP">
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<status>FAIL</status>
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<issue>#3453</issue>
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</phase>
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</test>
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<test name="SUBSETDATAPOINT_Ld5_D_Mmpi-serial.CLM_USRDAT.I2000Clm60BgcCropCrujra.derecho_intel.clm-default">
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<phase name="NLCOMP">
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<status>FAIL</status>
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</phase>
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</test>
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<test name="SMS_Ld10_D_Mmpi-serial.CLM_USRDAT.I1PtClm60Bgc.derecho_gnu.clm-default--clm-NEON-HARV">
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<phase name="SHAREDLIB_BUILD">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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</test>
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<test name="SMS_Ld10_D_Mmpi-serial.CLM_USRDAT.I1PtClm60Bgc.derecho_gnu.clm-NEON-MOAB--clm-PRISM">
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<phase name="SHAREDLIB_BUILD">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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<phase name="RUN">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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</test>
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<test name="FUNITCTSM_P1x1.f10_f10_mg37.I2000Clm50Sp.izumi_intel">
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<phase name="RUN">
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<status>FAIL</status>
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<issue>#3182</issue>
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</phase>
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</test>
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<test name="SMS_Ld10_D_Mmpi-serial.CLM_USRDAT.I1PtClm60Bgc.izumi_nag.clm-default--clm-NEON-HARV--clm-matrixcnOn">
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<phase name="RUN">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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</test>
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<test name="SMS_Ld10_D_Mmpi-serial.CLM_USRDAT.I1PtClm60Bgc.izumi_nag.clm-NEON-MOAB--clm-PRISM">
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<phase name="SHAREDLIB_BUILD">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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<phase name="RUN">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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</test>
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<test name="SMS_Ld10_D_Mmpi-serial.CLM_USRDAT.I1PtClm60Fates.derecho_gnu.clm-FatesPRISM--clm-NEON-FATES-YELL">
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<phase name="SHAREDLIB_BUILD">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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<phase name="RUN">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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</test>
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<test name="SMS_Ld10_D_Mmpi-serial.CLM_USRDAT.I1PtClm60SpRs.derecho_gnu.clm-default--clm-NEON-TOOL">
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<phase name="SHAREDLIB_BUILD">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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<phase name="RUN">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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</test>
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<test name="ERS_Ld60.f45_f45_mg37.I2000Clm50FatesCruRsGs.derecho_intel.clm-FatesColdST3">
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<phase name="RUN">
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<status>FAIL</status>
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<issue>#2867</issue>
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</phase>
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</test>
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<test name="SMS_Ld10_D_Mmpi-serial.CLM_USRDAT.I1PtClm60Fates.izumi_nag.clm-FatesFireLightningPopDens--clm-NEON-FATES-NIWO">
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<phase name="SHAREDLIB_BUILD">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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<phase name="RUN">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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</test>
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<test name="SMS_Ld10_D_Mmpi-serial.CLM_USRDAT.I1PtClm60Fates.izumi_nag.clm-FatesPRISM--clm-NEON-FATES-YELL">
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<phase name="SHAREDLIB_BUILD">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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<phase name="RUN">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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</test>
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<!-- fates test suite failures -->
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<!-- This is commented out because cime currently does NOT allow longnames in the XML in the XSD for this file
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</test>
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<test name="SMS_Ld10_D_Mmpi-serial.CLM_USRDAT.I1PtClm60Fates.derecho_intel.clm-FatesFireLightningPopDens--clm-NEON-FATES-NIWO">
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<phase name="SHAREDLIB_BUILD">
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<status>FAIL</status>
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<issue>#2310</issue>
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</phase>
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<phase name="RUN">
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<status>FAIL</status>
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<issue>#3038</issue>
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<!-- interim_restart (and aux_clm) test list-->
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<test name="ERR_Ld7.f10_f10_mg37.I2000Clm50BgcCropRtm.derecho_gnu.clm-default">
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<phase name="COMPARE_base_rest">
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<status>FAIL</status>
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<issue>#3383</issue>
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</test>
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<test name="ERR_Ld7.f10_f10_mg37.IHistClm60BgcCrop.derecho_gnu.clm-default">
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<status>FAIL</status>
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<issue>#3383</issue>
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</phase>
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</test>
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<test name="ERI_Ld41.f10_f10_mg37.I2000Clm60BgcCrop.derecho_gnu.clm-default">
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<phase name="COMPARE_base_hybrid">
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<status>FAIL</status>

‎doc/ChangeLog‎

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===============================================================
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Tag name: ctsm5.4.013
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Originator(s): erik (Erik Kluzek,UCAR/TSS,303-497-1326)
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Date: Wed Jan 28 12:24:02 AM MST 2026
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One-line Summary: Patch the Greenland snow hole with initial conditions for ne30 and tweak the C14 isotope latitudes
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Purpose and description of changes
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----------------------------------
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Point to tweaked C14 Isotope file so that the latitude line is straight and regrid doesn't change depending on processor count.
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Also bring in a new ne30 finidat (Initial Conditions or IC) file so that the Greenland snow hole won't exist in ne30 initial conditions.
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Significant changes to scientifically-supported configurations
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--------------------------------------------------------------
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Does this tag change answers significantly for any of the following physics configurations?
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(Details of any changes will be given in the "Answer changes" section below.)
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[Put an [X] in the box for any configuration with significant answer changes.]
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[ ] clm6_0
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[ ] clm5_0
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[ ] ctsm5_0-nwp
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[ ] clm4_5
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Bugs fixed
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----------
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List of CTSM issues fixed (include CTSM Issue # and description) [one per line]:
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Fixes #3708 -- Patch Greenland snow "hole"
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Fixes #3716 -- Use "tweaked" lat/lon C14 dataset so that the lattitude line will be straight and answers same on PE layout change
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Notes of particular relevance for users
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---------------------------------------
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Caveats for users (e.g., need to interpolate initial conditions):
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ONLY the ne30 IC file was updated, so this doesn't fix other resolutions
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And the datm forcing still has the problem of too low snow over Greenland
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Changes made to namelist defaults (e.g., changed parameter values):
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Updated: stream_fldfilename_atm_c14 and stream_meshfile_atm_c14
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Updated: finidat for ne30np4.pg3 grid (use the BgcCrop file for both BGC and SP cases)
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Notes of particular relevance for developers:
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---------------------------------------------
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Changes to tests or testing: Removed some expected fails that have been passing
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Testing summary: regular
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----------------
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[PASS means all tests PASS; OK means tests PASS other than expected fails.]
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build-namelist tests (if CLMBuildNamelist.pm has changed):
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derecho - OK
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regular tests (aux_clm: https://github.com/ESCOMP/CTSM/wiki/System-Testing-Guide#pre-merge-system-testing):
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derecho ----- OK
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izumi ------- OK
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If the tag used for baseline comparisons was NOT the previous tag, note that here:
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Answer changes
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--------------
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Changes answers relative to baseline: Yes! for f10 ciso cases, and ne30.pg3 cases
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Summarize any changes to answers, i.e.,
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- what code configurations: All
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- what platforms/compilers: All
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- nature of change:
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minor for f10 Carbon Isotope C14 (the latitude line is straightened)
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New IC for ne30.pg3 cases, so startup is different
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Other details
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-------------
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Pull Requests that document the changes (include PR ids):
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(https://github.com/ESCOMP/ctsm/pull)
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https://github.com/ESCOMP/CTSM/pull/3711 "ne30 IC to patch Greenland snow hole, Tweaked C14 isotope file"
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===============================================================
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===============================================================
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Tag name: ctsm5.4.012
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Originator(s): slevis (Samuel Levis,UCAR/TSS,303-665-1310)
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Date: Mon Jan 26 03:13:02 PM MST 2026

‎doc/ChangeSum‎

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Tag Who Date Summary
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============================================================================================================================
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ctsm5.4.013 erik 01/28/2026 Patch the Greenland snow hole with initial conditions for ne30 and tweak the C14 isotope latitudes
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ctsm5.4.012 slevis 01/26/2026 Fix C-balance error for partly emerged crops
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ctsm5.4.011 slevis 01/22/2026 Merge b4b-dev to master
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ctsm5.4.010 erik 01/21/2026 Update cime to version that changes answers for ERI tests

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