Fix start-stop

Author: mathomp4

CHANGELOG.md

@@ -15,11 +15,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-## [v2.5.1] - 2026-02-13
+## [v2.5.1] - 2026-02-17
 
 ### Fixed
 
 - Fix missing `GMI_HNO3` entry in `AMIP/NI2G_GridComp_ExtData.yaml` file
+- Fix start-stop regression failure in SU GridComp
 
 ## [v2.5.0] - 2026-02-05
 

ESMF/GOCART2G_GridComp/NI2G_GridComp/NI2G_GridCompMod.F90

@@ -860,11 +860,6 @@ subroutine Run2 (GC, import, export, clock, RC)
       thread = MAPL_get_current_thread()
       workspace => self%workspaces(thread)
 
-      !if (workspace%first) then
-         !xhno3 = MAPL_UNDEF
-         !workspace%first = .false.
-      !end if
-
       ! Recycle HNO3 every 3 hours
       if (alarm_is_ringing) then
          xhno3 = NITRATE_HNO3

ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_GridCompMod.F90

@@ -97,7 +97,6 @@ module SU2G_GridCompMod
       real    :: aviation_layers(4)  ! heights of the LTO, CDS and CRS layers
       real    :: fSO4anth  ! Fraction of anthropogenic emissions that are SO4
       !logical :: firstRun = .true.
-      !real, pointer :: h2o2_init(:,:,:)
 
 !     PRC: logic for GMI coupling
       logical :: using_GMI
@@ -533,8 +532,6 @@ subroutine Initialize (GC, IMPORT, EXPORT, CLOCK, RC)
                          LONS = LONS, &
                          LATS = LATS, __RC__ )
 
-    !allocate(self%h2o2_init(size(lats,1),size(lats,2),self%km), __STAT__)
-
 !   Is SU data driven?
 !   ------------------
     call determine_data_driven (COMP_NAME, data_driven, __RC__)
@@ -1256,13 +1253,6 @@ subroutine Run2 (GC, import, export, clock, RC)
 
      xoh = 0.0
      xno3 = 0.0
-
-     if (workspace%firstRun) then
-        xh2o2          = MAPL_UNDEF
-        h2o2_init = MAPL_UNDEF
-        workspace%firstRun  = .false.
-     end if
-
      xh2o2 = h2o2_init
 
      call SulfateUpdateOxidants (nymd, nhms, LONS, LATS, airdens, self%km, self%cdt, &
@@ -1332,7 +1322,7 @@ subroutine Run2 (GC, import, export, clock, RC)
           call MAPL_VarSpecGet(InternalSpec(n), SHORT_NAME=short_name, __RC__)
           call MAPL_GetPointer(internal, NAME=short_name, ptr=int_ptr, __RC__)
           call WetRemovalUFS  (self%km, self%klid, n, self%cdt, 'sulfate', &
-                      KIN, MAPL_GRAV, self%radius(n), rainout_eff, self%washout_tuning, & 
+                      KIN, MAPL_GRAV, self%radius(n), rainout_eff, self%washout_tuning, &
                       self%wet_radius_thr, int_ptr, ple, t, airdens, pfl_lsan, pfi_lsan, SUWT, __RC__)
     enddo