Merge PR #2348 (Changes for 14.4.0 within CESM compatibility)

This merge brings PR #2348 (Changes for GEOS-Chem v14.4 within CESM
compatibility, by @jimmielin) into the GEOS-Chem "no-diff-to-benchmark"
development stream.

This PR fixes a few minor issues in the GEOS-Chem to CESM interface.

Signed-off-by: Bob Yantosca <[email protected]>

CHANGELOG.md

@@ -5,19 +5,22 @@ This file documents all notable changes to the GEOS-Chem repository starting in
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased] - TBD
+### Added
+- Added initialization of PHOTDELTA in `ucx_h2so4phot` to avoid run-time error in CESM
+
 ### Changed
-- Alphabetically sort Complex SOA species into `geoschem_config.yml` in run directory creation
+- Alphabetically sort Complex SOA species into `geoschem_config.yml` in run directory creation 
 
 ### Fixed
 - Fixed formatting error in `.github/workflows/stale.yml` that caused the Mark Stale Issues action not to run
 - Fixed typo `$GCAPVERTRESL` -> `$GCAPVERTRES` in `HEMCO_Config.rc.fullchem` template file
-- Use hard-coded years for met fields and BC files in HEMCO_Config.rc so they are not read hourly
+- Use hard-coded years for met fields and BC files in `HEMCO_Config.rc` so they are not read hourly
+- Updated `run/CESM` with alphabetical sorting of species in `geoschem_config.yml`
 
 ### Removed
 - Removed `BudgetWetDep*` entries from simulations with no soluble species in `HISTORY.rc` templates
-
-### Added
-- Added initialization of PHOTDELTA in ucx_h2so4phot to avoid run-time error in CESM
+- Disabled `run/CESM` ParaNOx extension by default in `HEMCO_Config.rc`
+- Removed MPI broadcasts in CESM-only UCX code; MPI broadcast done at coupler level
 
 ## [14.4.0] - 2024-05-30
 ### Added

GeosCore/ucx_mod.F90

@@ -3906,8 +3906,6 @@ SUBROUTINE NOXCOEFF_INIT( Input_Opt, State_Grid, State_Chm )
     USE State_Chm_Mod,      ONLY : ChmState
 #if defined( MODEL_CESM )
     USE UNITS,              ONLY : freeUnit
-    USE CAM_ABORTUTILS,     ONLY : endrun
-    USE SPMD_UTILS,         ONLY : mpicom, masterprocid, mpi_success, mpi_real8
 #endif
 !
 ! !INPUT PARAMETERS:
@@ -3933,10 +3931,6 @@ SUBROUTINE NOXCOEFF_INIT( Input_Opt, State_Grid, State_Chm )
     INTEGER            :: I, AS, IOS
     INTEGER            :: IMON, ITRAC, ILEV
     INTEGER            :: IU_FILE
-#if defined( MODEL_CESM )
-    INTEGER            :: nSize ! Number of elements in State_Chm%NOXCOEFF
-    INTEGER            :: ierr
-#endif
 
     ! Strings
     CHARACTER(LEN=255) :: NOX_FILE
@@ -4060,7 +4054,6 @@ SUBROUTINE NOXCOEFF_INIT( Input_Opt, State_Grid, State_Chm )
     State_Chm%NOXCOEFF = 0.0e+0_fp
 
 #if defined( MODEL_CESM )
-    nSize = State_Chm%JJNOXCOEFF * UCX_NLEVS * 6 * 12
     IF ( Input_Opt%amIRoot ) THEN
 #endif
     ! Fill array
@@ -4141,9 +4134,6 @@ SUBROUTINE NOXCOEFF_INIT( Input_Opt, State_Grid, State_Chm )
     ENDDO !IMON
 #if defined( MODEL_CESM )
     ENDIF
-
-    CALL MPI_BCAST( State_Chm%NOXCOEFF, nSize, mpi_real8, masterprocid, mpicom, ierr )
-    IF ( ierr /= mpi_success ) CALL endrun(subname//': MPI_BCAST ERROR: NOXCOEFF')
 #endif
 
   END SUBROUTINE NOXCOEFF_INIT

run/CESM/HEMCO_Config.rc

@@ -162,7 +162,7 @@ VerboseOnCores:              root       # Accepted values: root all
 # -----------------------------------------------------------------------------
 100     Custom                 : off   -
 101     SeaFlux                : on    DMS/ACET/ALD2/MENO3/ETNO3/MOH
-102     ParaNOx                : on    NO/NO2/O3/HNO3
+102     ParaNOx                : off   NO/NO2/O3/HNO3
     --> LUT data format        :       nc
     --> LUT source dir         :       $ROOT/PARANOX/v2015-02
 103     LightNOx               : off   NO