diff --git a/atm/src/atm.F90 b/atm/src/atm.F90
index b6c77d0..15dde85 100644
--- a/atm/src/atm.F90
+++ b/atm/src/atm.F90
@@ -2,7 +2,7 @@ program atm
 
     use mod_oasis, only : OASIS_IN, OASIS_OUT
     use forcing_config_mod, only : forcing_config_type => forcing_config
-    use forcing_field_mod, only : forcing_field_type => forcing_field, FORCING_FIELD_DOMAIN_LAND
+    use forcing_field_mod, only : forcing_field_type => forcing_field, FORCING_FIELD_REALM_LAND
     use coupler_mod, only : coupler_type => coupler
     use error_handler, only : assert
     use ice_grid_proxy_mod, only : ice_grid_type => ice_grid_proxy
@@ -121,7 +121,7 @@ program atm
     allocate(to_runoff_map(num_atm_to_ice_fields))
     ri = 1
     do i=1, num_atm_to_ice_fields
-        if (forcing_fields(i)%domain == FORCING_FIELD_DOMAIN_LAND) then
+        if (forcing_fields(i)%realm == FORCING_FIELD_REALM_LAND) then
             to_runoff_map(i) = ri
             ri = ri + 1
         else
@@ -135,7 +135,7 @@ program atm
             ri = to_runoff_map(i)
             runoff_forcing_fields(ri)%coupling_name = &
                 forcing_fields(i)%coupling_name
-            runoff_forcing_fields(ri)%domain = forcing_fields(i)%domain
+            runoff_forcing_fields(ri)%realm = forcing_fields(i)%realm
             allocate(runoff_forcing_fields(ri)%data_array(ice_shape(1), ice_shape(2)))
             call coupler%init_field(runoff_forcing_fields(ri)%coupling_name, &
                                     OASIS_OUT, &
diff --git a/libforcing/src/forcing_field.F90 b/libforcing/src/forcing_field.F90
index ec0a237..9b02ae6 100644
--- a/libforcing/src/forcing_field.F90
+++ b/libforcing/src/forcing_field.F90
@@ -13,16 +13,16 @@ module forcing_field_mod
 implicit none
 private
 
-! Forcing fields can have a domain
-integer, parameter, public :: FORCING_FIELD_DOMAIN_NONE = 0
-integer, parameter, public :: FORCING_FIELD_DOMAIN_ATMOSPHERE = 10
-integer, parameter, public :: FORCING_FIELD_DOMAIN_LAND = 20
+! Forcing fields can have a realm
+integer, parameter, public :: FORCING_FIELD_REALM_NONE = 0
+integer, parameter, public :: FORCING_FIELD_REALM_ATMOSPHERE = 10
+integer, parameter, public :: FORCING_FIELD_REALM_LAND = 20
 
 type, public :: forcing_field
     character(len=64), dimension(:), allocatable :: names
     character(len=64) :: coupling_name
     character(len=1024), dimension(:), allocatable :: filename_templates
-    integer :: domain
+    integer :: realm
 
     integer :: dt
     character(len=9) :: calendar
@@ -46,13 +46,13 @@ module forcing_field_mod
 
 contains
 
-subroutine forcing_field_init(self, name_list, filename_template_list, cname, domain, &
+subroutine forcing_field_init(self, name_list, filename_template_list, cname, realm, &
                               start_date, product_name, loggerin, dt, calendar)
     class(forcing_field), intent(inout) :: self
     character(len=*), dimension(:), intent(in) :: name_list
     character(len=*), dimension(:), intent(in) :: filename_template_list
     character(len=*), intent(in) :: cname
-    character(len=*), intent(in) :: domain
+    character(len=*), intent(in) :: realm
     type(datetime), intent(in) :: start_date
     character(len=*), intent(in) :: product_name
     type(logger_type), target, intent(in) :: loggerin
@@ -71,12 +71,12 @@ subroutine forcing_field_init(self, name_list, filename_template_list, cname, do
     self%names(:) = name_list(:)
     self%filename_templates(:) = filename_template_list(:)
     self%coupling_name = cname
-    if (domain == 'atmosphere') then
-        self%domain = FORCING_FIELD_DOMAIN_ATMOSPHERE
+    if (realm == 'atmosphere') then
+        self%realm = FORCING_FIELD_REALM_ATMOSPHERE
     else
-        call assert(trim(domain) == 'land', &
-                    "Invalid domain value.")
-        self%domain = FORCING_FIELD_DOMAIN_LAND
+        call assert(trim(realm) == 'land', &
+                    "Invalid realm value.")
+        self%realm = FORCING_FIELD_REALM_LAND
     endif
 
     self%product_name = trim(product_name)
diff --git a/tests/ERA5/accessom2.nml b/tests/ERA5/accessom2.nml
index 5f91827..cfe9771 100644
--- a/tests/ERA5/accessom2.nml
+++ b/tests/ERA5/accessom2.nml
@@ -5,7 +5,7 @@
 /
 
 &date_manager_nml
-    forcing_start_date = '1980-12-30T00:00:00'
-    forcing_end_date = '2020-01-01T00:00:00'
-    restart_period = 1, 0, 0
+    forcing_start_date = '1981-01-01T00:00:00'
+    forcing_end_date = '1981-02-01T00:00:00'
+    restart_period = 0, 1, 0
 /
diff --git a/tests/ERA5/forcing.json b/tests/ERA5/forcing.json
index aa2a2d7..a49d828 100644
--- a/tests/ERA5/forcing.json
+++ b/tests/ERA5/forcing.json
@@ -64,7 +64,7 @@
     },
     {
         "coupling_field_name": "runof_ai",
-        "realm": "land",
+        "realm": "atmosphere",
         "input_fields": [
             {
                 "filename": "/g/data/rt52/era5/single-levels/reanalysis/mror/{{year}}/mror_era5_oper_sfc_{{year}}{{month}}{{start_day}}-{{year}}{{month}}{{end_day}}.nc",
diff --git a/tests/ERA5/namcouple b/tests/ERA5/namcouple
index 088223e..81199e2 100644
--- a/tests/ERA5/namcouple
+++ b/tests/ERA5/namcouple
@@ -106,12 +106,14 @@ CONSERV LR SCALAR LATLON 10 FRACNNEI FIRST
 ##########
 # Field 06 : runoff. Runoff is passed on the destination grid.
 ##########
-runof_ai runof_i 297 3600 1 a2i.nc EXPORTED
+runof_ai runof_i 297 3600 3 a2i.nc EXPORTED
 cict cict LAG=0 SEQ=+1
 P  0  P  0
 #
-LOCTRANS
+LOCTRANS MAPPING SCRIPR
 INSTANT
+../test_data/ERA5_MOM1_conserve.nc dst
+CONSERV LR SCALAR LATLON 10 FRACNNEI FIRST
 ##########
 # Field 07 : near surface (2m) air temp
 ##########