diff --git a/cime_config/buildnml b/cime_config/buildnml
index e834eb2d..757a8470 100755
--- a/cime_config/buildnml
+++ b/cime_config/buildnml
@@ -326,15 +326,16 @@ def buildnml(case, caseroot, compname):
     # Note - this does not change the blom namelist - it changes xml variables that are then
     # used by cmeps to change attributes that are sent to the atm
     # TODO: add n2o_emis and nh3_emis logic
-    if "ecosys" in case.get_value("BLOM_TRACER_MODULES"):
-        dms_emis = case.get_value("DMS_EMIS_OCN")
-        if dms_emis is not None:
-            case.set_value('DMS_EMIS_OCN','TRUE')
-            print ("   ***Setting DMS_EMIS_OCN to TRUE***")
-        brf_emis = pg_blom.get_value('use_bromo')
-        if brf_emis == ".true.":
-            case.set_value('BRF_EMIS_OCN','TRUE')
-            print ("   ***Setting BRF_EMIS_OCN to TRUE***")
+    if comp_interface == "nuopc":
+        if "ecosys" in case.get_value("BLOM_TRACER_MODULES"):
+            dms_emis = case.get_value("DMS_EMIS_OCN")
+            if dms_emis is not None:
+                case.set_value('DMS_EMIS_OCN','TRUE')
+                print ("   ***Setting DMS_EMIS_OCN to TRUE***")
+            brf_emis = pg_blom.get_value('use_bromo')
+            if brf_emis == ".true.":
+                case.set_value('BRF_EMIS_OCN','TRUE')
+                print ("   ***Setting BRF_EMIS_OCN to TRUE***")
 
 ###############################################################################
 def _main_func():
diff --git a/drivers/mct/setlogunit.F90 b/drivers/mct/setlogunit.F90
new file mode 100644
index 00000000..72673278
--- /dev/null
+++ b/drivers/mct/setlogunit.F90
@@ -0,0 +1,43 @@
+! ------------------------------------------------------------------------------
+! Copyright (C) 2015-2024 Mats Bentsen, Ping-Gin Chiu
+!
+! This file is part of BLOM.
+!
+! BLOM is free software: you can redistribute it and/or modify it under the
+! terms of the GNU Lesser General Public License as published by the Free
+! Software Foundation, either version 3 of the License, or (at your option)
+! any later version.
+!
+! BLOM is distributed in the hope that it will be useful, but WITHOUT ANY
+! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+! FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
+! more details.
+!
+! You should have received a copy of the GNU Lesser General Public License
+! along with BLOM. If not, see <https://www.gnu.org/licenses/>.
+! ------------------------------------------------------------------------------
+
+subroutine setlogunit
+
+   use mod_config,   only: inst_suffix
+   use mod_xc,       only: mnproc, lp
+   use shr_file_mod, only: shr_file_getUnit, shr_file_setIO
+
+   implicit none
+
+   character(len = 256) :: nlfnm
+   logical :: exists
+
+   ! ---------------------------------------------------------------------------
+   ! Redirect standard out to a log file if requested
+   ! ---------------------------------------------------------------------------
+   if (mnproc.eq.1) then
+      nlfnm = 'ocn_modelio.nml'//trim(inst_suffix)
+      inquire(file = nlfnm, exist = exists)
+      if (exists) then
+         lp = shr_file_getUnit()
+         call shr_file_setIO(nlfnm, lp)
+      endif
+   endif
+
+end subroutine setlogunit
diff --git a/phy/mod_xc.F90 b/phy/mod_xc.F90
index 80dd0489..286efcac 100644
--- a/phy/mod_xc.F90
+++ b/phy/mod_xc.F90
@@ -1,7 +1,7 @@
 ! ------------------------------------------------------------------------------
 ! Copyright (C) 2005 HYCOM Consortium and contributors
-! Copyright (C) 2006-2020 Lars Inge Enstad, Mats Bentsen, Alok Kumar Gupta
-! Copyright (C) 2024 Mariana Vertenstein
+! Copyright (C) 2006-2024 Lars Inge Enstad, Mats Bentsen, Alok Kumar Gupta,
+!                         Mariana Vertenstein
 !
 ! This file is part of BLOM.
 !
@@ -1389,6 +1389,8 @@ subroutine xcspmd
 
     mnproc = mypei + 1  ! mnproc counts from 1
 
+    call setlogunit
+
     if (use_DEBUG_ALL) then
        write(lp,'(a,i5)') 'mnproc =',mnproc
        call xcsync(flush_lp)