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LFRic2UM pseudo-levels #266

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90f44cb
migrating changes from fcm
mo-lottieturner Feb 13, 2026
89d008e
Merge branch 'main' into lfric2um_pseudL
mo-lottieturner Feb 13, 2026
d4d47a8
reordering use statements etc
mo-lottieturner Feb 13, 2026
efa6505
Merge branch 'lfric2um_pseudL' of github.com:mo-lottieturner/lfric_ap…
mo-lottieturner Feb 13, 2026
cf73f22
alphabetising and aligning
mo-lottieturner Feb 13, 2026
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80 changes: 58 additions & 22 deletions applications/lfricinputs/source/common/lfricinp_add_um_field_to_file_mod.f90
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Original file line number Diff line number Diff line change
Expand Up @@ -9,26 +9,26 @@ module lfricinp_add_um_field_to_file_mod
use, intrinsic :: iso_fortran_env, only: real64, int64

! lfricinp modules
use lfricinp_stashmaster_mod, only: get_stashmaster_item, grid, &
p_points, u_points, v_points, &
ozone_points, &
ppfc, &
sm_lbvc => lbvc, &
cfff, &
levelt, &
rho_levels, theta_levels, &
single_level, &
cfll, &
datat
use lfricinp_um_parameters_mod, only: um_imdi, um_rmdi, &
rh_polelat, rh_polelong, &
ldc_zsea_theta, ldc_zsea_rho, &
ldc_c_theta, ldc_c_rho, &
rh_deltaEW, rh_deltaNS, &
ih_model_levels
use lfricinp_check_shumlib_status_mod, only: shumlib
use lfricinp_grid_type_mod, only: lfricinp_grid_type
use lfricinp_stashmaster_mod, only: get_stashmaster_item, grid, &
p_points, u_points, v_points, &
ozone_points, land_compressed, &
ppfc, p_points_values_over_sea, &
sm_lbvc => lbvc, &
cfff, &
levelt, &
rho_levels, theta_levels, &
single_level, &
cfll, &
datat
use lfricinp_um_level_codes_mod, only: lfricinp_get_first_level_num
use lfricinp_check_shumlib_status_mod, only: shumlib
use lfricinp_um_parameters_mod, only: um_imdi, um_rmdi, &
rh_polelat, rh_polelong, &
ldc_zsea_theta, ldc_zsea_rho, &
ldc_c_theta, ldc_c_rho, &
rh_deltaEW, rh_deltaNS, &
ih_model_levels


! lfric modules
Expand All @@ -40,7 +40,7 @@ module lfricinp_add_um_field_to_file_mod
use f_shum_file_mod, only: shum_file_type
use f_shum_field_mod, only: shum_field_type
use f_shum_lookup_indices_mod, only: &
lbyr, lbmon, lbdat, lbhr, lbmin, lbday, lbsec, lbyrd, lbmond, lbdatd, &
lbyr, lbmon, lbdat, lbhr, lbmin, lbday, lbsec, lbyrd, lbmond, lbdatd, &
lbhrd, lbmind, lbdayd, lbsecd, lbtim, lbft, lbcode, lbhem, &
lbrow, lbnpt, lbpack, lbrel, lbfc, lbcfc, lbproc, lbvc, lbrvc, &
lbtyp, lblev, lbrsvd1, lbrsvd2, &
Expand All @@ -50,7 +50,7 @@ module lfricinp_add_um_field_to_file_mod
bmks

use f_shum_fixed_length_header_indices_mod, only: &
vert_coord_type, horiz_grid_type, &
vert_coord_type, horiz_grid_type, &
dataset_type, run_identifier, calendar, projection_number, model_version, &
grid_staggering, sub_model, t1_year, t1_month, t1_day, t1_hour, t1_minute, &
t1_second, t2_year, t2_month, t2_day, t2_hour, t2_minute, t2_second, &
Expand Down Expand Up @@ -140,7 +140,7 @@ subroutine lfricinp_add_um_field_to_file(um_file, stashcode, level_index, &

! Set horiz grid
select case(grid_type_code)
case(p_points, ozone_points)
case(p_points, ozone_points, land_compressed, p_points_values_over_sea)
lookup_int(lbrow) = um_grid%num_p_points_y
lookup_int(lbnpt) = um_grid%num_p_points_x
! "Zeroth" start lat/lon so subtract one grid spacing
Expand Down Expand Up @@ -227,14 +227,49 @@ subroutine lfricinp_add_um_field_to_file(um_file, stashcode, level_index, &

! Check vertical coordinate type
if (lookup_int(lbvc) >= 126 .and. lookup_int(lbvc) <= 139 &
.or. lookup_int(lbvc) == 5) then
.or. lookup_int(lbvc) == 5 .or. lookup_int(lbvc) == 0 .or. &
lookup_int(lbvc) == 275 ) then
! Special codes inc single level, set to 0.0
if ( .not. lookup_int(lbvc) == 129 ) then
write(log_scratch_space, '(A,I0,A)') &
"Vertical coord type ", lookup_int(lbvc), " treated as single layer"
call log_event(log_scratch_space, LOG_LEVEL_INFO)
end if
lookup_real_tmp(blev)=0.0_real64
lookup_real_tmp(bhlev)=0.0_real64
lookup_real_tmp(brlev)=0.0_real64
lookup_real_tmp(bhrlev)=0.0_real64
lookup_real_tmp(bulev)=0.0_real64
lookup_real_tmp(bhulev)=0.0_real64
else if (lookup_int(lbvc) == 6) then ! Deep soil levels
! These are hardcoded to the settings in a UM dump file with 4 soil levels as
! that is currently hardcoded in elsewhere in lfric2um. If at some point that
! gets changed to not be hardcoded, this will also need to change
! bulev is the same as brsvd1
write(log_scratch_space, '(A,I0,A)') &
"Vertical coord type ", lookup_int(lbvc), " treated as soil field"
call log_event(log_scratch_space, LOG_LEVEL_INFO)
if (level_number == 1) then
lookup_real_tmp(bulev) = 0.0_real64
lookup_real_tmp(blev)=0.05_real64
lookup_real_tmp(brlev)=0.1_real64
else if (level_number == 2) then
lookup_real_tmp(bulev) = 0.1_real64
lookup_real_tmp(blev)=0.225_real64
lookup_real_tmp(brlev)=0.35_real64
else if (level_number == 3) then
lookup_real_tmp(bulev) = 0.35_real64
lookup_real_tmp(blev)=0.675_real64
lookup_real_tmp(brlev)=1.0_real64
else if (level_number == 4) then
lookup_real_tmp(bulev) = 1.0_real64
lookup_real_tmp(blev)=2.0_real64
lookup_real_tmp(brlev)=3.0_real64
else
write(log_scratch_space, '(A,I0,A)') "Soil level number ", level_number, &
" not supported. Only soil fields with 4 levels are supported currently"
call log_event(log_scratch_space, LOG_LEVEL_ERROR)
end if
else if (lookup_int(lbvc) == 65) then ! Standard hybrid height levels
! height of model level k above mean sea level is
! z(i,j,k) = Zsea(k) + C(k)*Zorog(i,j)
Expand All @@ -243,6 +278,7 @@ subroutine lfricinp_add_um_field_to_file(um_file, stashcode, level_index, &
! brlev,bhrlev zsea,C of lower level boundary
! The level here can refer to either a theta or rho level, with
! layer boundaries defined by surrounding rho or theta levels.

if (level_code == theta_levels) then ! theta level (& w)

! When referencing theta arrays need to add 1 to the level number as level
Expand Down
23 changes: 23 additions & 0 deletions applications/lfricinputs/source/common/lfricinp_create_lfric_fields_mod.f90
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Original file line number Diff line number Diff line change
Expand Up @@ -106,24 +106,36 @@ subroutine lfricinp_create_lfric_fields( mesh, twod_mesh, &
select case (lfric_field_kind)

case(w2h_field) ! Stashcodes that would map to W2h, i.e. winds
write(log_scratch_space, '(A,I0,A)') &
"LFRic field kind code is ", lfric_field_kind, " or w2h_field"
call log_event(log_scratch_space, LOG_LEVEL_INFO)
type_mesh => mesh
fs_id = W2H
ndata_64 = 1_int64
ndata_first = .false.

case(w3_field) ! Stashcodes that map to W3/rho
write(log_scratch_space, '(A,I0,A)') &
"LFRic field kind code is ", lfric_field_kind, " or w3_field"
call log_event(log_scratch_space, LOG_LEVEL_INFO)
type_mesh => mesh
fs_id = W3
ndata_64 = 1_int64
ndata_first = .false.

case(wtheta_field) ! Stashcodes that maps to Wtheta
write(log_scratch_space, '(A,I0,A)') &
"LFRic field kind code is ", lfric_field_kind, " or wtheta_field"
call log_event(log_scratch_space, LOG_LEVEL_INFO)
type_mesh => mesh
fs_id = Wtheta
ndata_64 = 1_int64
ndata_first = .false.

case(w3_field_2d) ! Stash that needs 2D mesh
write(log_scratch_space, '(A,I0,A)') &
"LFRic field kind code is ", lfric_field_kind, " or w3_field_2d"
call log_event(log_scratch_space, LOG_LEVEL_INFO)
type_mesh => twod_mesh
fs_id = W3
if ( get_stashmaster_item(stashcode, pseudt) == 0 ) then
Expand All @@ -132,13 +144,22 @@ subroutine lfricinp_create_lfric_fields( mesh, twod_mesh, &
else
! Get number of pseudo levels/ndata
ndata_64 = lfricinp_get_num_pseudo_levels(um_grid, stashcode)
write(log_scratch_space, '(A,I0,A)') &
"This field has ", ndata_64, " pseudo levels"
call log_event(log_scratch_space, LOG_LEVEL_INFO)
end if
ndata_first = .false.

case(w3_soil_field) ! Soil fields
write(log_scratch_space, '(A,I0,A)') &
"LFRic field kind code is ", lfric_field_kind, " or w3_soil_field"
call log_event(log_scratch_space, LOG_LEVEL_INFO)
type_mesh => twod_mesh
fs_id = W3
ndata_64 = lfricinp_get_num_levels(um_file, stashcode)
write(log_scratch_space, '(A,I0,A)') &
"This field has ", ndata_64, " levels"
call log_event(log_scratch_space, LOG_LEVEL_INFO)
ndata_first = .true.

case DEFAULT
Expand All @@ -162,6 +183,8 @@ subroutine lfricinp_create_lfric_fields( mesh, twod_mesh, &
call field % set_write_behaviour(tmp_write_ptr)
call log_event("Add "//field_name//" to field collection", LOG_LEVEL_INFO)
call field_collection % add_field(field)
call log_event("Added", LOG_LEVEL_INFO)


nullify(tmp_read_ptr, tmp_write_ptr)
nullify(vector_space)
Expand Down
32 changes: 29 additions & 3 deletions applications/lfricinputs/source/common/lfricinp_um_level_codes_mod.f90
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@ module lfricinp_um_level_codes_mod

! lfric modules
use log_mod, only : log_event, log_scratch_space, &
LOG_LEVEL_ERROR
LOG_LEVEL_ERROR, LOG_LEVEL_INFO

implicit none

Expand Down Expand Up @@ -145,11 +145,23 @@ function lfricinp_get_num_pseudo_levels(um_grid, stashcode) &
type(lfricinp_grid_type), intent(in):: um_grid
integer(kind=int64), intent(in) :: stashcode
! Result
integer(kind=int64) :: num_pseudo_levels
integer(kind=int64) :: num_pseudo_levels, last_pseudL_num, first_pseudL_num


num_pseudo_levels = lfricinp_get_last_pseudo_level_num(um_grid, stashcode) - &
lfricinp_get_first_pseudo_level_num(stashcode) + 1

last_pseudL_num = lfricinp_get_last_pseudo_level_num(um_grid, stashcode)

first_pseudL_num = lfricinp_get_first_pseudo_level_num(stashcode)
write(log_scratch_space, '(A,I0)') &
"Last pseudo level number:", last_pseudL_num
call log_event(log_scratch_space, LOG_LEVEL_INFO)

write(log_scratch_space, '(A,I0)') &
"First pseudo level number:",first_pseudL_num
call log_event(log_scratch_space, LOG_LEVEL_INFO)

end function lfricinp_get_num_pseudo_levels

!------------------------------------------------------------------
Expand Down Expand Up @@ -207,14 +219,29 @@ function lfricinp_get_last_pseudo_level_num(um_grid, stashcode) &
'lfricinp_get_last_pseudo_level_num'

last_pseudo_level_code = get_stashmaster_item(stashcode, pseudl)
write(log_scratch_space, '(A,I0)') &
"Last pseudo level code is ", last_pseudo_level_code
call log_event(log_scratch_space, LOG_LEVEL_INFO)

select case(last_pseudo_level_code)
case (7,9) ! ntypes == ntiles (lfricinputs doesn't support aggregate tile)
last_pseudo_level_num = um_grid % num_surface_types
if (last_pseudo_level_num == -32768) then
last_pseudo_level_num = 9
end if
write(log_scratch_space, '(A,I0)') &
"Last pseudo level number is ", last_pseudo_level_num
call log_event(log_scratch_space, LOG_LEVEL_INFO)
case (10)
last_pseudo_level_num = um_grid%num_ice_cats
case (11)
last_pseudo_level_num = um_grid%num_snow_layers * um_grid%num_surface_types
if ( um_grid%num_snow_layers == -32768 .or. um_grid%num_surface_types == -32768 ) then
last_pseudo_level_num = 3 * 9
end if
write(log_scratch_space, '(A,I0)') &
"Last pseudo level number is ", last_pseudo_level_num
call log_event(log_scratch_space, LOG_LEVEL_INFO)
case DEFAULT
write(log_scratch_space, '(A,I0,A,I0)') &
"Last pseudo_level code ", last_pseudo_level_code, &
Expand All @@ -224,5 +251,4 @@ function lfricinp_get_last_pseudo_level_num(um_grid, stashcode) &

end function lfricinp_get_last_pseudo_level_num


end module lfricinp_um_level_codes_mod
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