From cf767a9eb1c49b6d337492373ae7492bd7bc1089 Mon Sep 17 00:00:00 2001
From: Samuel Levis <slevis@ucar.edu>
Date: Thu, 17 Oct 2024 12:02:48 -0600
Subject: [PATCH] Add 20thC test to build-namelist_test.pl and update defaults
 accordingly

---
 bld/namelist_files/namelist_defaults_ctsm.xml | 5 +++++
 bld/unit_testers/build-namelist_test.pl       | 1 +
 2 files changed, 6 insertions(+)

diff --git a/bld/namelist_files/namelist_defaults_ctsm.xml b/bld/namelist_files/namelist_defaults_ctsm.xml
index 421f450ec8..ab0d7c0d7f 100644
--- a/bld/namelist_files/namelist_defaults_ctsm.xml
+++ b/bld/namelist_files/namelist_defaults_ctsm.xml
@@ -1248,6 +1248,11 @@ attributes from the config_cache.xml file (with keys converted to upper-case).
 >hgrid=ne0np4.ARCTICGRIS.ne30x8 maxpft=17 mask=tx0.1v2 use_cn=.false. use_crop=.false. irrigate=.true. glc_nec=10 do_transient_pfts=.false. use_excess_ice=.false.
 </init_interp_attributes>
 
+<init_interp_attributes sim_year="2013" use_cndv=".false." use_fates=".false." lnd_tuning_mode="clm6_0_cam6.0"
+			hgrid="ne0np4CONUS.ne30x8" use_cn=".false." maxpft="17"
+>hgrid=ne0np4CONUS.ne30x8 maxpft=17 mask=tx0.1v2 use_cn=.false. use_crop=.false. irrigate=.true. glc_nec=10 do_transient_pfts=.false. use_excess_ice=.false.
+</init_interp_attributes>
+
 <init_interp_attributes sim_year="1979" use_cndv=".false." use_fates=".false." lnd_tuning_mode="clm6_0_cam7.0"
                         hgrid="0.9x1.25" use_cn=".false." maxpft="17"
 >hgrid=0.9x1.25 maxpft=17 mask=gx1v7 use_cn=.false. use_crop=.false. irrigate=.true. glc_nec=10 do_transient_pfts=.false. use_excess_ice=.false.
diff --git a/bld/unit_testers/build-namelist_test.pl b/bld/unit_testers/build-namelist_test.pl
index 06c9bcc361..346b852dc2 100755
--- a/bld/unit_testers/build-namelist_test.pl
+++ b/bld/unit_testers/build-namelist_test.pl
@@ -514,6 +514,7 @@ sub cat_and_create_namelistinfile {
    foreach my $options (
                       "--res 1.9x2.5 --mask gx1v7 --bgc sp --use_case 20thC_transient --namelist '&a start_ymd=19790101/' --lnd_tuning_mode ${phys}_cam6.0 --infile empty_user_nl_clm",
                       "--res 1.9x2.5 --mask gx1v7 --bgc sp --use_case 20thC_transient --namelist '&a start_ymd=19790101/' --lnd_tuning_mode ${phys}_cam7.0 --infile empty_user_nl_clm",
+                      "--res ne0np4CONUS.ne30x8 --mask tx0.1v2 -bgc sp -use_case 20thC_transient -namelist '&a start_ymd=20130101/' -lnd_tuning_mode ${phys}_cam6.0 --infile empty_user_nl_clm",
                      ) {
       &make_env_run( 'LND_SETS_DUST_EMIS_DRV_FLDS'=>"FALSE" );
       eval{ system( "$bldnml --envxml_dir . $options > $tempfile 2>&1 " ); };