diff --git a/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc b/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc
index 39a28308..a2a1fd9c 100644
--- a/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc
+++ b/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc
@@ -9,7 +9,7 @@ nbins: 4
 
 # Volcanic pointwise sources
 volcano_srcfilen_explosive: ExtData/chemistry/CARN/v202401/explosive/so2_explosive_volcanic_emissions_CARN_v202401.%y4%m2%d2.rc
-volcano_srcfilen_degassing: ExtData/chemistry/CARN/v202401/so2_volcanic_emissions_CARN_v202401.degassing_only.rc
+volcano_srcfilen_degassing: ExtData/chemistry/CARN/v202401/sfc/so2_volcanic_emissions_CARN_v202401.degassing_only.rc
 
 # Heights [m] of LTO, CDS and CRS aviation emissions layers
 aviation_vertical_layers: 0.0 100.0 9.0e3 10.0e3
diff --git a/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_GridCompMod.F90 b/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_GridCompMod.F90
index b5739d5a..6c84a01a 100644
--- a/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_GridCompMod.F90
+++ b/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_GridCompMod.F90
@@ -840,7 +840,6 @@ subroutine Run1 (GC, import, export, clock, RC)
 !   -----------------------------------------------
     thread = MAPL_get_current_thread()
     workspace => self%workspaces(thread)
-
 !   Update Volcanic SO2 Emissions Daily
     if(workspace%nymd_last /= nymd) then
        workspace%nymd_last = nymd
@@ -850,10 +849,13 @@ subroutine Run1 (GC, import, export, clock, RC)
        if(index(self%volcano_srcfilen_degassing,'volcanic_') /= 0) then
           call StrTemplate(fname, self%volcano_srcfilen_degassing, xid='unknown', &
                             nymd=nymd, nhms=120000 )
-          call ReadPointEmissions (nymd, fname, workspace%nVolc, workspace%vLat, workspace%vLon, &
+          inquire(file=fname, exist=fileExists)
+          if (fileExists) then
+             call ReadPointEmissions (nymd, fname, workspace%nVolc, workspace%vLat, workspace%vLon, &
                                    workspace%vElev, workspace%vCloud, workspace%vSO2, workspace%vStart, &
                                    workspace%vEnd, label='volcano', __RC__)
-          workspace%vSO2 = workspace%vSO2 * fMassSO2 / fMassSulfur
+             workspace%vSO2 = workspace%vSO2 * fMassSO2 / fMassSulfur
+          end if
        end if
 
 !      EXPLOSIVE: Get pointwise SO2 and altitude of volcanoes from a daily file data base
@@ -861,11 +863,15 @@ subroutine Run1 (GC, import, export, clock, RC)
        if(index(self%volcano_srcfilen_explosive,'volcanic_') /= 0) then
           call StrTemplate(fname, self%volcano_srcfilen_explosive, xid='unknown', &
                             nymd=nymd, nhms=120000 )
-          call ReadPointEmissions (nymd, fname, workspace%nVolcE, workspace%vLatE, workspace%vLonE, &
+          inquire(file=fname, exist=fileExists)
+          if (fileExists) then
+             call ReadPointEmissions (nymd, fname, workspace%nVolcE, workspace%vLatE, workspace%vLonE, &
                                    workspace%vElevE, workspace%vCloudE, workspace%vSO2E, workspace%vStartE, &
                                    workspace%vEndE, label='volcano', __RC__)
-          workspace%vSO2 = workspace%vSO2 * fMassSO2 / fMassSulfur
+             workspace%vSO2 = workspace%vSO2 * fMassSO2 / fMassSulfur
+          end if
        end if
+
     end if
 
 !   DEGASSING: Apply volcanic emissions
diff --git a/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_instance_SU.rc b/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_instance_SU.rc
index 4509e3f4..f46a747e 100644
--- a/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_instance_SU.rc
+++ b/ESMF/GOCART2G_GridComp/SU2G_GridComp/SU2G_instance_SU.rc
@@ -9,7 +9,7 @@ nbins: 4
 
 # Volcanic pointwise sources
 volcano_srcfilen_explosive: /dev/null
-volcano_srcfilen_degassing: ExtData/chemistry/CARN/v202401/so2_volcanic_emissions_CARN_v202401.degassing_only.rc
+volcano_srcfilen_degassing: ExtData/chemistry/CARN/v202401/sfc/so2_volcanic_emissions_CARN_v202401.degassing_only.rc
 
 # Heights [m] of LTO, CDS and CRS aviation emissions layers
 aviation_vertical_layers: 0.0 100.0 9.0e3 10.0e3