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Fix for prohibiting irriagation with fates #206

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Fix for prohibiting irriagation with fates #206

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e45dde2
make irrigate false a default for fates, restrict irrigate to be true…
mvdebolskiy Mar 12, 2026
4275b42
Make errmsg more useful and shorter
mvdebolskiy Mar 14, 2026
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5 changes: 4 additions & 1 deletion bld/CLMBuildNamelist.pm
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Original file line number Diff line number Diff line change
Expand Up @@ -2103,13 +2103,16 @@ sub setup_logic_irrigate {
my ($opts, $nl_flags, $definition, $defaults, $nl) = @_;

add_default($opts, $nl_flags->{'inputdata_rootdir'}, $definition, $defaults, $nl, 'irrigate',
'use_crop'=>$nl_flags->{'use_crop'}, 'use_cndv'=>$nl_flags->{'use_cndv'},
'use_crop'=>$nl_flags->{'use_crop'}, 'use_cndv'=>$nl_flags->{'use_cndv'}, 'use_fates'=>$nl_flags->{'use_fates'},
'sim_year'=>$nl_flags->{'sim_year'}, 'sim_year_range'=>$nl_flags->{'sim_year_range'}, );
if ( &value_is_true($nl->get_value('irrigate') ) ) {
$nl_flags->{'irrigate'} = ".true.";
if ( $nl_flags->{'sim_year'} eq "PtVg" ) {
$log->fatal_error("irrigate=TRUE does NOT make sense with the Potential Vegetation dataset, leave irrigate=FALSE");
}
if (&value_is_true($nl_flags->{'use_fates'})) {
$log->fatal_error("irrigate=TRUE is NOT possible with use_fates=TRUE, leave irrigate=FALSE");
}
} else {
$nl_flags->{'irrigate'} = ".false.";
}
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9 changes: 5 additions & 4 deletions bld/namelist_files/namelist_defaults_ctsm.xml
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Expand Up @@ -200,10 +200,11 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
<stream_model_year_align_atm_c13 sim_year_range="1850-2000" >1700</stream_model_year_align_atm_c13>

<!-- Irrigation default (Note, the use-cases also set this) -->
<irrigate >.false.</irrigate>
<irrigate use_cndv=".false." sim_year_range="1850-2100">.true.</irrigate>
<irrigate phys="clm6_0" use_cndv=".false." sim_year_range="1850-2000">.true.</irrigate>
<irrigate phys="clm4_5" use_cndv=".false." sim_year_range="1850-2100">.false.</irrigate>
<irrigate >.false.</irrigate>
<irrigate use_fates=".true." >.false.</irrigate>
<irrigate use_cndv=".false." sim_year_range="1850-2100" use_fates=".false." >.true.</irrigate>
<irrigate phys="clm6_0" use_cndv=".false." sim_year_range="1850-2000" use_fates=".false." >.true.</irrigate>
<irrigate phys="clm4_5" use_cndv=".false." sim_year_range="1850-2100" >.false.</irrigate>

<!-- Saturation excess runoff for crops -->
<crop_fsat_equals_zero>.false.</crop_fsat_equals_zero>
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7 changes: 7 additions & 0 deletions src/main/clm_driver.F90
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Expand Up @@ -119,6 +119,7 @@ subroutine clm_drv(doalb, nextsw_cday, declinp1, declin, rstwr, nlend, rdate, ro
use FATESFireFactoryMod , only : scalar_lightning
use FatesInterfaceTypesMod, only : fates_dispersal_cadence_none
use CIsoAtmTimeseriesMod, only : C14BombSpike, C13TimeSeries
use shr_log_mod, only : errMsg => shr_log_errMsg
!
! !ARGUMENTS:
implicit none
Expand Down Expand Up @@ -821,6 +822,12 @@ subroutine clm_drv(doalb, nextsw_cday, declinp1, declin, rstwr, nlend, rdate, ro

if (irrigate) then

if (use_fates) then
call endrun(msg=' ERROR: Can not have ' // &
'use_fates = .true. and irrigate = .true. ' // &
'Set one of them to .false. in your user_nl_clm. ' // &
errMsg(sourcefile, __LINE__))
endif
! ============================================================================
! Determine irrigation needed for future time steps
! ============================================================================
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