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ice_step_mod.F90
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ice_step_mod.F90
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!=======================================================================
!
! Contains CICE component driver routines common to all drivers.
!
! authors Elizabeth C. Hunke, LANL
! Philip W. Jones, LANL
! William H. Lipscomb, LANL
!
! 2008 ECH: created module by moving subroutines from drivers/cice4/
! 2014 ECH: created column package
module ice_step_mod
use ice_kinds_mod
use ice_blocks, only: block, get_block
use ice_blocks, only: nx_block, ny_block
use ice_constants, only: c0, c1, c1000, c4, p25
use ice_constants, only: field_loc_center, field_loc_NEcorner, &
field_loc_Nface, field_loc_Eface, &
field_type_scalar, field_type_vector
use ice_domain, only: halo_info, nblocks, blocks_ice
use ice_domain_size, only: max_blocks
use ice_exit, only: abort_ice
use ice_fileunits, only: nu_diag
use icepack_intfc, only: icepack_warnings_flush, icepack_warnings_aborted
use icepack_intfc, only: icepack_prep_radiation
use icepack_intfc, only: icepack_step_therm1
use icepack_intfc, only: icepack_step_therm2
use icepack_intfc, only: icepack_aggregate
use icepack_intfc, only: icepack_step_ridge
use icepack_intfc, only: icepack_step_wavefracture
use icepack_intfc, only: icepack_step_radiation
use icepack_intfc, only: icepack_ocn_mixed_layer, icepack_atm_boundary
use icepack_intfc, only: icepack_biogeochemistry, icepack_load_ocean_bio_array
use icepack_intfc, only: icepack_max_algae, icepack_max_nbtrcr, icepack_max_don
use icepack_intfc, only: icepack_max_doc, icepack_max_dic, icepack_max_aero
use icepack_intfc, only: icepack_max_fe, icepack_max_iso
use icepack_intfc, only: icepack_query_parameters
use icepack_intfc, only: icepack_query_tracer_flags, icepack_query_tracer_sizes
use icepack_intfc, only: icepack_query_tracer_indices
implicit none
private
public :: step_therm1, step_therm2, step_dyn_horiz, step_dyn_ridge, &
step_snow, prep_radiation, step_radiation, ocean_mixed_layer, &
update_state, biogeochemistry, step_dyn_wave, step_prep
real (kind=dbl_kind), dimension (:,:,:), allocatable :: &
uvelT_icep, & ! uvel for wind stress computation in icepack
vvelT_icep ! vvel for wind stress computation in icepack
!=======================================================================
contains
!=======================================================================
subroutine save_init
! saves initial values for aice, aicen, vicen, vsnon
use ice_state, only: aice, aicen, aice_init, aicen_init, &
vicen, vicen_init, vsnon, vsnon_init
character(len=*), parameter :: subname = '(save_init)'
!-----------------------------------------------------------------
! Save the ice area passed to the coupler (so that history fields
! can be made consistent with coupler fields).
! Save the initial ice area and volume in each category.
!-----------------------------------------------------------------
aice_init = aice
aicen_init = aicen
vicen_init = vicen
vsnon_init = vsnon
end subroutine save_init
!=======================================================================
subroutine step_prep
! prep for step, called outside nblock loop
use ice_flux, only: uatm, vatm, uatmT, vatmT
use ice_grid, only: grid_atm_dynu, grid_atm_dynv, grid_average_X2Y
use ice_state, only: uvel, vvel
logical (kind=log_kind) :: &
highfreq ! highfreq flag
logical (kind=log_kind), save :: &
first_call = .true. ! first call flag
character(len=*), parameter :: subname = '(step_prep)'
! Save initial state
call save_init
! Compute uatmT, vatmT
call grid_average_X2Y('S',uatm,grid_atm_dynu,uatmT,'T')
call grid_average_X2Y('S',vatm,grid_atm_dynv,vatmT,'T')
!-----------------------------------------------------------------
! Compute uvelT_icep, vvelT_icep
!-----------------------------------------------------------------
if (first_call) then
allocate(uvelT_icep(nx_block,ny_block,max_blocks))
allocate(vvelT_icep(nx_block,ny_block,max_blocks))
uvelT_icep = c0
vvelT_icep = c0
endif
call icepack_query_parameters(highfreq_out=highfreq)
if (highfreq) then
call grid_average_X2Y('A', uvel, 'U', uvelT_icep, 'T')
call grid_average_X2Y('A', vvel, 'U', vvelT_icep, 'T')
endif
first_call = .false.
end subroutine step_prep
!=======================================================================
!
! Scales radiation fields computed on the previous time step.
!
! authors: Elizabeth Hunke, LANL
subroutine prep_radiation (iblk)
use ice_domain_size, only: ncat, nilyr, nslyr
use ice_flux, only: scale_factor, swvdr, swvdf, swidr, swidf, &
alvdr_ai, alvdf_ai, alidr_ai, alidf_ai, &
alvdr_init, alvdf_init, alidr_init, alidf_init
use ice_arrays_column, only: fswsfcn, fswintn, &
fswthrun, fswthrun_vdr, fswthrun_vdf, fswthrun_idr, fswthrun_idf, &
fswpenln, Sswabsn, Iswabsn
use ice_state, only: aice, aicen
use ice_timers, only: ice_timer_start, ice_timer_stop, timer_sw
integer (kind=int_kind), intent(in) :: &
iblk ! block index
! local variables
integer (kind=int_kind) :: &
ilo,ihi,jlo,jhi, & ! beginning and end of physical domain
i, j ! horizontal indices
type (block) :: &
this_block ! block information for current block
character(len=*), parameter :: subname = '(prep_radiation)'
call ice_timer_start(timer_sw,iblk) ! shortwave
alvdr_init(:,:,iblk) = c0
alvdf_init(:,:,iblk) = c0
alidr_init(:,:,iblk) = c0
alidf_init(:,:,iblk) = c0
this_block = get_block(blocks_ice(iblk),iblk)
ilo = this_block%ilo
ihi = this_block%ihi
jlo = this_block%jlo
jhi = this_block%jhi
!-----------------------------------------------------------------
! Compute netsw scaling factor (new netsw / old netsw)
!-----------------------------------------------------------------
do j = jlo, jhi
do i = ilo, ihi
alvdr_init(i,j,iblk) = alvdr_ai(i,j,iblk)
alvdf_init(i,j,iblk) = alvdf_ai(i,j,iblk)
alidr_init(i,j,iblk) = alidr_ai(i,j,iblk)
alidf_init(i,j,iblk) = alidf_ai(i,j,iblk)
call icepack_prep_radiation (ncat=ncat, nilyr=nilyr, nslyr=nslyr, &
scale_factor=scale_factor(i,j,iblk), &
aice = aice (i,j, iblk), aicen = aicen (i,j, :,iblk), &
swvdr = swvdr (i,j, iblk), swvdf = swvdf (i,j, iblk), &
swidr = swidr (i,j, iblk), swidf = swidf (i,j, iblk), &
alvdr_ai = alvdr_ai(i,j, iblk), alvdf_ai = alvdf_ai(i,j, iblk), &
alidr_ai = alidr_ai(i,j, iblk), alidf_ai = alidf_ai(i,j, iblk), &
fswsfcn = fswsfcn (i,j, :,iblk), fswintn = fswintn (i,j, :,iblk), &
fswthrun = fswthrun(i,j, :,iblk), &
fswthrun_vdr = fswthrun_vdr(i,j, :,iblk), &
fswthrun_vdf = fswthrun_vdf(i,j, :,iblk), &
fswthrun_idr = fswthrun_idr(i,j, :,iblk), &
fswthrun_idf = fswthrun_idf(i,j, :,iblk), &
fswpenln = fswpenln(i,j,:,:,iblk), &
Sswabsn = Sswabsn (i,j,:,:,iblk), Iswabsn = Iswabsn (i,j,:,:,iblk))
enddo ! i
enddo ! j
call icepack_warnings_flush(nu_diag)
if (icepack_warnings_aborted()) call abort_ice(error_message=subname, &
file=__FILE__, line=__LINE__)
call ice_timer_stop(timer_sw,iblk) ! shortwave
end subroutine prep_radiation
!=======================================================================
!
! Driver for updating ice and snow internal temperatures and
! computing thermodynamic growth rates and coupler fluxes.
!
! authors: William H. Lipscomb, LANL
subroutine step_therm1 (dt, iblk)
use ice_arrays_column, only: ffracn, dhsn, &
Cdn_ocn, Cdn_ocn_skin, Cdn_ocn_floe, Cdn_ocn_keel, Cdn_atm_ratio, &
Cdn_atm, Cdn_atm_skin, Cdn_atm_floe, Cdn_atm_rdg, Cdn_atm_pond, &
hfreebd, hdraft, hridge, distrdg, hkeel, dkeel, lfloe, dfloe, &
fswsfcn, fswintn, Sswabsn, Iswabsn, meltsliqn, meltsliq, &
fswthrun, fswthrun_vdr, fswthrun_vdf, fswthrun_idr, fswthrun_idf
use ice_calendar, only: yday
use ice_domain_size, only: ncat, nilyr, nslyr, n_iso, n_aero
use ice_flux, only: frzmlt, sst, Tf, strocnxT_iavg, strocnyT_iavg, rside, fbot, Tbot, Tsnice, &
meltsn, melttn, meltbn, congeln, snoicen, uatmT, vatmT, fside, wlat, &
wind, rhoa, potT, Qa, zlvl, zlvs, strax, stray, flatn, fsensn, fsurfn, fcondtopn, &
flw, fsnow, fpond, sss, mlt_onset, frz_onset, fcondbotn, fcondbot, fsloss, &
frain, Tair, strairxT, strairyT, fsurf, fcondtop, fsens, &
flat, fswabs, flwout, evap, evaps, evapi, Tref, Qref, Uref, fresh, fsalt, fhocn, &
fswthru, fswthru_vdr, fswthru_vdf, fswthru_idr, fswthru_idf, &
meltt, melts, meltb, congel, snoice, &
flatn_f, fsensn_f, fsurfn_f, fcondtopn_f, &
send_i2x_per_cat, fswthrun_ai, dsnow
use ice_flux_bgc, only: dsnown, faero_atm, faero_ocn, fiso_atm, fiso_ocn, &
Qa_iso, Qref_iso, fiso_evap, HDO_ocn, H2_16O_ocn, H2_18O_ocn
use ice_grid, only: lmask_n, lmask_s, tmask
use ice_state, only: aice, aicen, aicen_init, vicen_init, &
vice, vicen, vsno, vsnon, trcrn, vsnon_init
#ifdef CICE_IN_NEMO
use ice_state, only: aice_init
#endif
#ifdef CESMCOUPLED
use ice_prescribed_mod, only: prescribed_ice
#else
logical (kind=log_kind) :: &
prescribed_ice ! if .true., use prescribed ice instead of computed
#endif
real (kind=dbl_kind), intent(in) :: &
dt ! time step (s)
integer (kind=int_kind), intent(in) :: &
iblk ! block index
! local variables
#ifdef CICE_IN_NEMO
real (kind=dbl_kind) :: &
raice ! reciprocal of ice concentration
#endif
integer (kind=int_kind) :: &
ilo,ihi,jlo,jhi, & ! beginning and end of physical domain
i, j , & ! horizontal indices
n , & ! thickness category index
k, kk ! indices for aerosols
integer (kind=int_kind) :: &
ntrcr, nt_apnd, nt_hpnd, nt_ipnd, nt_alvl, nt_vlvl, nt_Tsfc, &
nt_iage, nt_FY, nt_qice, nt_sice, nt_aero, nt_qsno, &
nt_isosno, nt_isoice, nt_rsnw, nt_smice, nt_smliq
logical (kind=log_kind) :: &
tr_iage, tr_FY, tr_iso, tr_aero, tr_pond, &
tr_pond_lvl, tr_pond_topo, calc_Tsfc, highfreq, tr_snow
real (kind=dbl_kind) :: &
puny ! a very small number
real (kind=dbl_kind), dimension(n_aero,2,ncat) :: &
aerosno, aeroice ! kg/m^2
real (kind=dbl_kind), dimension(n_iso,ncat) :: &
isosno, isoice ! kg/m^2
real (kind=dbl_kind), dimension(nslyr,ncat) :: &
rsnwn, smicen, smliqn
type (block) :: &
this_block ! block information for current block
character(len=*), parameter :: subname = '(step_therm1)'
call icepack_query_parameters(puny_out=puny)
call icepack_query_parameters(calc_Tsfc_out=calc_Tsfc)
call icepack_query_parameters(highfreq_out=highfreq)
call icepack_query_tracer_sizes(ntrcr_out=ntrcr)
call icepack_query_tracer_flags( &
tr_iage_out=tr_iage, tr_FY_out=tr_FY, tr_iso_out=tr_iso, &
tr_aero_out=tr_aero, tr_pond_out=tr_pond, &
tr_pond_lvl_out=tr_pond_lvl, tr_pond_topo_out=tr_pond_topo, &
tr_snow_out=tr_snow)
call icepack_query_tracer_indices( &
nt_apnd_out=nt_apnd, nt_hpnd_out=nt_hpnd, nt_ipnd_out=nt_ipnd, &
nt_alvl_out=nt_alvl, nt_vlvl_out=nt_vlvl, nt_Tsfc_out=nt_Tsfc, &
nt_iage_out=nt_iage, nt_FY_out=nt_FY, &
nt_qice_out=nt_qice, nt_sice_out=nt_sice, &
nt_aero_out=nt_aero, nt_qsno_out=nt_qsno, &
nt_rsnw_out=nt_rsnw, nt_smice_out=nt_smice, nt_smliq_out=nt_smliq, &
nt_isosno_out=nt_isosno, nt_isoice_out=nt_isoice)
call icepack_warnings_flush(nu_diag)
if (icepack_warnings_aborted()) call abort_ice(error_message=subname, &
file=__FILE__, line=__LINE__)
#ifndef CESMCOUPLED
prescribed_ice = .false.
#endif
rsnwn (:,:) = c0
smicen (:,:) = c0
smliqn (:,:) = c0
isoice (:,:) = c0
aerosno(:,:,:) = c0
aeroice(:,:,:) = c0
#ifdef CICE_IN_NEMO
do j = 1, ny_block
do i = 1, nx_block
!---------------------------------------------------------------
! Scale frain and fsnow by ice concentration as these fields
! are supplied by NEMO multiplied by ice concentration
!---------------------------------------------------------------
if (aice_init(i,j,iblk) > puny) then
raice = c1 / aice_init(i,j,iblk)
frain(i,j,iblk) = frain(i,j,iblk)*raice
fsnow(i,j,iblk) = fsnow(i,j,iblk)*raice
else
frain(i,j,iblk) = c0
fsnow(i,j,iblk) = c0
endif
enddo ! i
enddo ! j
#endif
this_block = get_block(blocks_ice(iblk),iblk)
ilo = this_block%ilo
ihi = this_block%ihi
jlo = this_block%jlo
jhi = this_block%jhi
do j = jlo, jhi
do i = ilo, ihi
if (tr_snow) then
do n = 1, ncat
do k = 1, nslyr
rsnwn (k,n) = trcrn(i,j,nt_rsnw +k-1,n,iblk)
smicen(k,n) = trcrn(i,j,nt_smice+k-1,n,iblk)
smliqn(k,n) = trcrn(i,j,nt_smliq+k-1,n,iblk)
enddo
enddo
endif ! tr_snow
if (tr_iso) then ! trcrn(nt_iso*) has units kg/m^3
do n=1,ncat
do k=1,n_iso
isosno(k,n) = trcrn(i,j,nt_isosno+k-1,n,iblk) * vsnon_init(i,j,n,iblk)
isoice(k,n) = trcrn(i,j,nt_isoice+k-1,n,iblk) * vicen_init(i,j,n,iblk)
enddo
enddo
endif ! tr_iso
if (tr_aero) then ! trcrn(nt_aero) has units kg/m^3
do n=1,ncat
do k=1,n_aero
aerosno (k,:,n) = &
trcrn(i,j,nt_aero+(k-1)*4 :nt_aero+(k-1)*4+1,n,iblk) &
* vsnon_init(i,j,n,iblk)
aeroice (k,:,n) = &
trcrn(i,j,nt_aero+(k-1)*4+2:nt_aero+(k-1)*4+3,n,iblk) &
* vicen_init(i,j,n,iblk)
enddo
enddo
endif ! tr_aero
if (tmask(i,j,iblk)) then
call icepack_step_therm1(dt=dt, ncat=ncat, &
nilyr=nilyr, nslyr=nslyr, &
aicen_init = aicen_init (i,j,:,iblk), &
vicen_init = vicen_init (i,j,:,iblk), &
vsnon_init = vsnon_init (i,j,:,iblk), &
aice = aice (i,j, iblk), &
aicen = aicen (i,j,:,iblk), &
vice = vice (i,j, iblk), &
vicen = vicen (i,j,:,iblk), &
vsno = vsno (i,j, iblk), &
vsnon = vsnon (i,j,:,iblk), &
uvel = uvelT_icep (i,j, iblk), &
vvel = vvelT_icep (i,j, iblk), &
Tsfc = trcrn (i,j,nt_Tsfc,:,iblk), &
zqsn = trcrn (i,j,nt_qsno:nt_qsno+nslyr-1,:,iblk), &
zqin = trcrn (i,j,nt_qice:nt_qice+nilyr-1,:,iblk), &
zSin = trcrn (i,j,nt_sice:nt_sice+nilyr-1,:,iblk), &
alvl = trcrn (i,j,nt_alvl,:,iblk), &
vlvl = trcrn (i,j,nt_vlvl,:,iblk), &
apnd = trcrn (i,j,nt_apnd,:,iblk), &
hpnd = trcrn (i,j,nt_hpnd,:,iblk), &
ipnd = trcrn (i,j,nt_ipnd,:,iblk), &
iage = trcrn (i,j,nt_iage,:,iblk), &
FY = trcrn (i,j,nt_FY ,:,iblk), &
rsnwn = rsnwn (:,:), &
smicen = smicen (:,:), &
smliqn = smliqn (:,:), &
aerosno = aerosno (:,:,:), &
aeroice = aeroice (:,:,:), &
isosno = isosno (:,:), &
isoice = isoice (:,:), &
uatm = uatmT (i,j, iblk), &
vatm = vatmT (i,j, iblk), &
wind = wind (i,j, iblk), &
zlvl = zlvl (i,j, iblk), &
zlvs = zlvs (i,j, iblk), &
Qa = Qa (i,j, iblk), &
Qa_iso = Qa_iso (i,j,:,iblk), &
rhoa = rhoa (i,j, iblk), &
Tair = Tair (i,j, iblk), &
Tref = Tref (i,j, iblk), &
Qref = Qref (i,j, iblk), &
Qref_iso = Qref_iso (i,j,:,iblk), &
Uref = Uref (i,j, iblk), &
Cdn_atm_ratio= Cdn_atm_ratio(i,j, iblk), &
Cdn_ocn = Cdn_ocn (i,j, iblk), &
Cdn_ocn_skin = Cdn_ocn_skin(i,j, iblk), &
Cdn_ocn_floe = Cdn_ocn_floe(i,j, iblk), &
Cdn_ocn_keel = Cdn_ocn_keel(i,j, iblk), &
Cdn_atm = Cdn_atm (i,j, iblk), &
Cdn_atm_skin = Cdn_atm_skin(i,j, iblk), &
Cdn_atm_floe = Cdn_atm_floe(i,j, iblk), &
Cdn_atm_pond = Cdn_atm_pond(i,j, iblk), &
Cdn_atm_rdg = Cdn_atm_rdg (i,j, iblk), &
hfreebd = hfreebd (i,j, iblk), &
hdraft = hdraft (i,j, iblk), &
hridge = hridge (i,j, iblk), &
distrdg = distrdg (i,j, iblk), &
hkeel = hkeel (i,j, iblk), &
dkeel = dkeel (i,j, iblk), &
lfloe = lfloe (i,j, iblk), &
dfloe = dfloe (i,j, iblk), &
strax = strax (i,j, iblk), &
stray = stray (i,j, iblk), &
strairxT = strairxT (i,j, iblk), &
strairyT = strairyT (i,j, iblk), &
potT = potT (i,j, iblk), &
sst = sst (i,j, iblk), &
sss = sss (i,j, iblk), &
Tf = Tf (i,j, iblk), &
strocnxT = strocnxT_iavg(i,j, iblk), &
strocnyT = strocnyT_iavg(i,j, iblk), &
fbot = fbot (i,j, iblk), &
Tbot = Tbot (i,j, iblk), &
Tsnice = Tsnice (i,j, iblk), &
frzmlt = frzmlt (i,j, iblk), &
rside = rside (i,j, iblk), &
fside = fside (i,j, iblk), &
wlat = wlat (i,j, iblk), &
fsnow = fsnow (i,j, iblk), &
frain = frain (i,j, iblk), &
fpond = fpond (i,j, iblk), &
fsloss = fsloss (i,j, iblk), &
fsurf = fsurf (i,j, iblk), &
fsurfn = fsurfn (i,j,:,iblk), &
fcondtop = fcondtop (i,j, iblk), &
fcondtopn = fcondtopn (i,j,:,iblk), &
fcondbot = fcondbot (i,j, iblk), &
fcondbotn = fcondbotn (i,j,:,iblk), &
fswsfcn = fswsfcn (i,j,:,iblk), &
fswintn = fswintn (i,j,:,iblk), &
fswthrun = fswthrun (i,j,:,iblk), &
fswthrun_vdr = fswthrun_vdr (i,j,:,iblk),&
fswthrun_vdf = fswthrun_vdf (i,j,:,iblk),&
fswthrun_idr = fswthrun_idr (i,j,:,iblk),&
fswthrun_idf = fswthrun_idf (i,j,:,iblk),&
fswabs = fswabs (i,j, iblk), &
flwout = flwout (i,j, iblk), &
Sswabsn = Sswabsn (i,j,:,:,iblk), &
Iswabsn = Iswabsn (i,j,:,:,iblk), &
flw = flw (i,j, iblk), &
fsens = fsens (i,j, iblk), &
fsensn = fsensn (i,j,:,iblk), &
flat = flat (i,j, iblk), &
flatn = flatn (i,j,:,iblk), &
evap = evap (i,j, iblk), &
evaps = evaps (i,j, iblk), &
evapi = evapi (i,j, iblk), &
fresh = fresh (i,j, iblk), &
fsalt = fsalt (i,j, iblk), &
fhocn = fhocn (i,j, iblk), &
fswthru = fswthru (i,j, iblk), &
fswthru_vdr = fswthru_vdr (i,j, iblk), &
fswthru_vdf = fswthru_vdf (i,j, iblk), &
fswthru_idr = fswthru_idr (i,j, iblk), &
fswthru_idf = fswthru_idf (i,j, iblk), &
flatn_f = flatn_f (i,j,:,iblk), &
fsensn_f = fsensn_f (i,j,:,iblk), &
fsurfn_f = fsurfn_f (i,j,:,iblk), &
fcondtopn_f = fcondtopn_f (i,j,:,iblk), &
faero_atm = faero_atm (i,j,1:n_aero,iblk), &
faero_ocn = faero_ocn (i,j,1:n_aero,iblk), &
fiso_atm = fiso_atm (i,j,:,iblk), &
fiso_ocn = fiso_ocn (i,j,:,iblk), &
fiso_evap = fiso_evap (i,j,:,iblk), &
HDO_ocn = HDO_ocn (i,j, iblk), &
H2_16O_ocn = H2_16O_ocn (i,j, iblk), &
H2_18O_ocn = H2_18O_ocn (i,j, iblk), &
dhsn = dhsn (i,j,:,iblk), &
ffracn = ffracn (i,j,:,iblk), &
meltt = meltt (i,j, iblk), &
melttn = melttn (i,j,:,iblk), &
meltb = meltb (i,j, iblk), &
meltbn = meltbn (i,j,:,iblk), &
melts = melts (i,j, iblk), &
meltsn = meltsn (i,j,:,iblk), &
congel = congel (i,j, iblk), &
congeln = congeln (i,j,:,iblk), &
snoice = snoice (i,j, iblk), &
snoicen = snoicen (i,j,:,iblk), &
dsnow = dsnow (i,j, iblk), &
dsnown = dsnown (i,j,:,iblk), &
meltsliq = meltsliq (i,j, iblk), &
meltsliqn = meltsliqn (i,j,:,iblk), &
lmask_n = lmask_n (i,j, iblk), &
lmask_s = lmask_s (i,j, iblk), &
mlt_onset = mlt_onset (i,j, iblk), &
frz_onset = frz_onset (i,j, iblk), &
yday=yday, prescribed_ice=prescribed_ice)
!-----------------------------------------------------------------
! handle per-category i2x fields, no merging
!-----------------------------------------------------------------
if (send_i2x_per_cat) then
do n = 1, ncat
! TODO (mvertens, 2018-12-22): do we need to add the band separated quantities
! for MOM6 here also?
fswthrun_ai(i,j,n,iblk) = fswthrun(i,j,n,iblk)*aicen_init(i,j,n,iblk)
enddo ! ncat
endif
endif
if (tr_snow) then
do n = 1, ncat
do k = 1, nslyr
trcrn(i,j,nt_rsnw +k-1,n,iblk) = rsnwn (k,n)
trcrn(i,j,nt_smice+k-1,n,iblk) = smicen(k,n)
trcrn(i,j,nt_smliq+k-1,n,iblk) = smliqn(k,n)
enddo
enddo
endif ! tr_snow
if (tr_iso) then
do n = 1, ncat
if (vicen(i,j,n,iblk) > puny) &
isoice(:,n) = isoice(:,n)/vicen(i,j,n,iblk)
if (vsnon(i,j,n,iblk) > puny) &
isosno(:,n) = isosno(:,n)/vsnon(i,j,n,iblk)
do k = 1, n_iso
trcrn(i,j,nt_isosno+k-1,n,iblk) = isosno(k,n)
trcrn(i,j,nt_isoice+k-1,n,iblk) = isoice(k,n)
enddo
enddo
endif ! tr_iso
if (tr_aero) then
do n = 1, ncat
if (vicen(i,j,n,iblk) > puny) &
aeroice(:,:,n) = aeroice(:,:,n)/vicen(i,j,n,iblk)
if (vsnon(i,j,n,iblk) > puny) &
aerosno(:,:,n) = aerosno(:,:,n)/vsnon(i,j,n,iblk)
do k = 1, n_aero
do kk = 1, 2
trcrn(i,j,nt_aero+(k-1)*4+kk-1,n,iblk)=aerosno(k,kk,n)
trcrn(i,j,nt_aero+(k-1)*4+kk+1,n,iblk)=aeroice(k,kk,n)
enddo
enddo
enddo
endif ! tr_aero
enddo ! i
enddo ! j
call icepack_warnings_flush(nu_diag)
if (icepack_warnings_aborted()) call abort_ice(error_message=subname, &
file=__FILE__, line=__LINE__)
end subroutine step_therm1
!=======================================================================
! Driver for thermodynamic changes not needed for coupling:
! transport in thickness space, lateral growth and melting.
!
! authors: William H. Lipscomb, LANL
! Elizabeth C. Hunke, LANL
subroutine step_therm2 (dt, iblk)
use ice_arrays_column, only: hin_max, fzsal, ocean_bio, wave_sig_ht, &
wave_spectrum, wavefreq, dwavefreq, &
first_ice, bgrid, cgrid, igrid, floe_rad_c, floe_binwidth, &
d_afsd_latg, d_afsd_newi, d_afsd_latm, d_afsd_weld
use ice_calendar, only: yday
use ice_domain_size, only: ncat, nilyr, nslyr, nblyr, nfsd
use ice_flux, only: fresh, frain, fpond, frzmlt, frazil, frz_onset, &
update_ocn_f, fsalt, Tf, sss, salinz, fhocn, rside, fside, wlat, &
meltl, frazil_diag
use ice_flux_bgc, only: flux_bio, faero_ocn, &
fiso_ocn, HDO_ocn, H2_16O_ocn, H2_18O_ocn
use ice_grid, only: tmask
use ice_state, only: aice, aicen, aice0, trcr_depend, &
aicen_init, vicen_init, trcrn, vicen, vsnon, &
trcr_base, n_trcr_strata, nt_strata
real (kind=dbl_kind), intent(in) :: &
dt ! time step
integer (kind=int_kind), intent(in) :: &
iblk ! block index
! local variables
integer (kind=int_kind) :: &
ilo,ihi,jlo,jhi, & ! beginning and end of physical domain
i, j ! horizontal indices
integer (kind=int_kind) :: &
ntrcr, nbtrcr, nltrcr
logical (kind=log_kind) :: &
tr_fsd, & ! floe size distribution tracers
z_tracers, & ! vertical biogeochemistry
solve_zsal ! zsalinity
type (block) :: &
this_block ! block information for current block
character(len=*), parameter :: subname = '(step_therm2)'
call icepack_query_parameters(z_tracers_out=z_tracers,solve_zsal_out=solve_zsal)
call icepack_query_tracer_sizes(ntrcr_out=ntrcr, nbtrcr_out=nbtrcr)
call icepack_query_tracer_flags(tr_fsd_out=tr_fsd)
call icepack_warnings_flush(nu_diag)
if (icepack_warnings_aborted()) call abort_ice(error_message=subname, &
file=__FILE__, line=__LINE__)
! nltrcr is only used as a zbgc flag in icepack (number of zbgc tracers > 0)
if (z_tracers .or. solve_zsal) then
nltrcr = 1
else
nltrcr = 0
endif
this_block = get_block(blocks_ice(iblk),iblk)
ilo = this_block%ilo
ihi = this_block%ihi
jlo = this_block%jlo
jhi = this_block%jhi
do j = jlo, jhi
do i = ilo, ihi
if (tmask(i,j,iblk)) then
! significant wave height for FSD
if (tr_fsd) &
wave_sig_ht(i,j,iblk) = c4*SQRT(SUM(wave_spectrum(i,j,:,iblk)*dwavefreq(:)))
call icepack_step_therm2(dt=dt, ncat=ncat, &
nltrcr=nltrcr, nilyr=nilyr, nslyr=nslyr, nblyr=nblyr, &
hin_max = hin_max (:), &
aicen = aicen (i,j,:,iblk), &
vicen = vicen (i,j,:,iblk), &
vsnon = vsnon (i,j,:,iblk), &
aicen_init = aicen_init(i,j,:,iblk), &
vicen_init = vicen_init(i,j,:,iblk), &
trcrn = trcrn (i,j,:,:,iblk), &
aice0 = aice0 (i,j, iblk), &
aice = aice (i,j, iblk), &
trcr_depend= trcr_depend(:), &
trcr_base = trcr_base(:,:), &
n_trcr_strata = n_trcr_strata(:), &
nt_strata = nt_strata(:,:), &
Tf = Tf (i,j, iblk), &
sss = sss (i,j, iblk), &
salinz = salinz (i,j,:,iblk), &
rside = rside (i,j, iblk), &
meltl = meltl (i,j, iblk), &
fside = fside (i,j, iblk), &
wlat = wlat (i,j, iblk), &
frzmlt = frzmlt (i,j, iblk), &
frazil = frazil (i,j, iblk), &
frain = frain (i,j, iblk), &
fpond = fpond (i,j, iblk), &
fresh = fresh (i,j, iblk), &
fsalt = fsalt (i,j, iblk), &
fhocn = fhocn (i,j, iblk), &
update_ocn_f = update_ocn_f, &
bgrid = bgrid, &
cgrid = cgrid, &
igrid = igrid, &
faero_ocn = faero_ocn (i,j,:,iblk), &
first_ice = first_ice (i,j,:,iblk), &
fzsal = fzsal (i,j, iblk), &
flux_bio = flux_bio (i,j,1:nbtrcr,iblk), &
ocean_bio = ocean_bio (i,j,1:nbtrcr,iblk), &
frazil_diag= frazil_diag(i,j,iblk), &
frz_onset = frz_onset (i,j, iblk), &
yday = yday, &
fiso_ocn = fiso_ocn (i,j,:,iblk), &
HDO_ocn = HDO_ocn (i,j, iblk), &
H2_16O_ocn = H2_16O_ocn(i,j, iblk), &
H2_18O_ocn = H2_18O_ocn(i,j, iblk), &
nfsd = nfsd, &
wave_sig_ht= wave_sig_ht(i,j,iblk), &
wave_spectrum = wave_spectrum(i,j,:,iblk), &
wavefreq = wavefreq(:), &
dwavefreq = dwavefreq(:), &
d_afsd_latg= d_afsd_latg(i,j,:,iblk),&
d_afsd_newi= d_afsd_newi(i,j,:,iblk),&
d_afsd_latm= d_afsd_latm(i,j,:,iblk),&
d_afsd_weld= d_afsd_weld(i,j,:,iblk),&
floe_rad_c = floe_rad_c(:), &
floe_binwidth = floe_binwidth(:))
endif ! tmask
enddo ! i
enddo ! j
call icepack_warnings_flush(nu_diag)
if (icepack_warnings_aborted()) call abort_ice(error_message=subname, &
file=__FILE__, line=__LINE__)
end subroutine step_therm2
!=======================================================================
!
! finalize thermo updates
!
! authors: Elizabeth Hunke, LANL
subroutine update_state (dt, daidt, dvidt, dagedt, offset)
use ice_domain_size, only: ncat
! use ice_grid, only: tmask
use ice_state, only: aicen, trcrn, vicen, vsnon, &
aice, trcr, vice, vsno, aice0, trcr_depend, &
bound_state, trcr_base, nt_strata, n_trcr_strata
use ice_timers, only: ice_timer_start, ice_timer_stop, timer_bound, timer_updstate
real (kind=dbl_kind), intent(in) :: &
dt ! time step
real (kind=dbl_kind), dimension(:,:,:), intent(inout), optional :: &
daidt, & ! change in ice area per time step
dvidt, & ! change in ice volume per time step
dagedt ! change in ice age per time step
real (kind=dbl_kind), intent(in), optional :: &
offset ! d(age)/dt time offset = dt for thermo, 0 for dyn
integer (kind=int_kind) :: &
iblk, & ! block index
i,j, & ! horizontal indices
ntrcr, & !
nt_iage !
logical (kind=log_kind) :: &
tr_iage !
character(len=*), parameter :: subname='(update_state)'
call ice_timer_start(timer_updstate)
call icepack_query_tracer_flags(tr_iage_out=tr_iage)
call icepack_query_tracer_sizes(ntrcr_out=ntrcr)
call icepack_query_tracer_indices(nt_iage_out=nt_iage)
call icepack_warnings_flush(nu_diag)
if (icepack_warnings_aborted()) call abort_ice(error_message=subname, &
file=__FILE__, line=__LINE__)
!-------------------------------------------------------------------
! Ghost cell updates for state variables.
!-------------------------------------------------------------------
call ice_timer_start(timer_bound)
call bound_state (aicen, &
vicen, vsnon, &
ntrcr, trcrn)
call ice_timer_stop(timer_bound)
!$OMP PARALLEL DO PRIVATE(iblk,i,j) SCHEDULE(runtime)
do iblk = 1, nblocks
do j = 1, ny_block
do i = 1, nx_block
!-----------------------------------------------------------------
! Aggregate the updated state variables (includes ghost cells).
!-----------------------------------------------------------------
! if (tmask(i,j,iblk)) &
call icepack_aggregate(ncat = ncat, &
aicen = aicen(i,j,:,iblk), &
trcrn = trcrn(i,j,:,:,iblk), &
vicen = vicen(i,j,:,iblk), &
vsnon = vsnon(i,j,:,iblk), &
aice = aice (i,j, iblk), &
trcr = trcr (i,j,:,iblk), &
vice = vice (i,j, iblk), &
vsno = vsno (i,j, iblk), &
aice0 = aice0(i,j, iblk), &
ntrcr = ntrcr, &
trcr_depend = trcr_depend(:), &
trcr_base = trcr_base(:,:), &
n_trcr_strata = n_trcr_strata(:), &
nt_strata = nt_strata(:,:))
if (present(offset)) then
!-----------------------------------------------------------------
! Compute thermodynamic area and volume tendencies.
!-----------------------------------------------------------------
daidt(i,j,iblk) = (aice(i,j,iblk) - daidt(i,j,iblk)) / dt
dvidt(i,j,iblk) = (vice(i,j,iblk) - dvidt(i,j,iblk)) / dt
if (tr_iage) then
if (offset > c0) then ! thermo
if (trcr(i,j,nt_iage,iblk) > c0) &
dagedt(i,j,iblk) = (trcr(i,j,nt_iage,iblk) &
- dagedt(i,j,iblk) - offset) / dt
else ! dynamics
dagedt(i,j,iblk) = (trcr(i,j,nt_iage,iblk) &
- dagedt(i,j,iblk)) / dt
endif
endif ! tr_iage
endif ! present(offset)
enddo ! i
enddo ! j
enddo ! iblk
!$OMP END PARALLEL DO
call icepack_warnings_flush(nu_diag)
if (icepack_warnings_aborted()) call abort_ice(error_message=subname, &
file=__FILE__, line=__LINE__)
call ice_timer_stop(timer_updstate)
end subroutine update_state
!=======================================================================
!
! Run one time step of wave-fracturing the floe size distribution
!
! authors: Lettie Roach, NIWA
! Elizabeth C. Hunke, LANL
subroutine step_dyn_wave (dt)
use ice_arrays_column, only: wave_spectrum, &
d_afsd_wave, floe_rad_l, floe_rad_c, wavefreq, dwavefreq
use ice_domain_size, only: ncat, nfsd, nfreq
use ice_state, only: trcrn, aicen, aice, vice
use ice_timers, only: ice_timer_start, ice_timer_stop, timer_column, &
timer_fsd
real (kind=dbl_kind), intent(in) :: &
dt ! time step
! local variables
type (block) :: &
this_block ! block information for current block
integer (kind=int_kind) :: &
ilo,ihi,jlo,jhi, & ! beginning and end of physical domain
iblk, & ! block index
i, j ! horizontal indices
character (len=char_len) :: wave_spec_type
character(len=*), parameter :: subname = '(step_dyn_wave)'
call ice_timer_start(timer_column)
call ice_timer_start(timer_fsd)
call icepack_query_parameters(wave_spec_type_out=wave_spec_type)
call icepack_warnings_flush(nu_diag)
if (icepack_warnings_aborted()) call abort_ice(error_message=subname, &
file=__FILE__, line=__LINE__)
!$OMP PARALLEL DO PRIVATE(iblk,i,j,ilo,ihi,jlo,jhi,this_block)
do iblk = 1, nblocks
this_block = get_block(blocks_ice(iblk),iblk)
ilo = this_block%ilo
ihi = this_block%ihi
jlo = this_block%jlo
jhi = this_block%jhi
do j = jlo, jhi
do i = ilo, ihi
d_afsd_wave(i,j,:,iblk) = c0
call icepack_step_wavefracture (wave_spec_type, &
dt, ncat, nfsd, nfreq, &
aice (i,j, iblk), &
vice (i,j, iblk), &
aicen (i,j,:, iblk), &
floe_rad_l(:), floe_rad_c(:), &
wave_spectrum (i,j,:, iblk), &
wavefreq(:), dwavefreq(:), &
trcrn (i,j,:,:,iblk), &
d_afsd_wave (i,j,:, iblk))
end do ! i
end do ! j
end do ! iblk
!$OMP END PARALLEL DO
call ice_timer_stop(timer_fsd)
call ice_timer_stop(timer_column)
end subroutine step_dyn_wave
!=======================================================================
!
! Run one time step of dynamics and horizontal transport.
! NOTE: The evp and transport modules include boundary updates, so
! they cannot be done inside a single block loop.
!
! authors: William H. Lipscomb, LANL
! Elizabeth C. Hunke, LANL
subroutine step_dyn_horiz (dt)
use ice_boundary, only: ice_HaloUpdate
use ice_dyn_evp, only: evp
use ice_dyn_eap, only: eap
use ice_dyn_vp, only: implicit_solver
use ice_dyn_shared, only: kdyn
use ice_flux, only: strocnxU, strocnyU, strocnxT_iavg, strocnyT_iavg
use ice_flux, only: init_history_dyn
use ice_grid, only: grid_average_X2Y
use ice_state, only: aiU
use ice_transport_driver, only: advection, transport_upwind, transport_remap
real (kind=dbl_kind), intent(in) :: &
dt ! dynamics time step
! local variables
type (block) :: &
this_block ! block information for current block
integer (kind=int_kind) :: &
ilo,ihi,jlo,jhi, & ! beginning and end of physical domain
iblk, & ! block index
i, j ! horizontal indices
real (kind=dbl_kind), dimension (nx_block,ny_block,max_blocks) :: &
work1, & ! temporary
work2 ! temporary
character(len=*), parameter :: subname = '(step_dyn_horiz)'
call init_history_dyn ! initialize dynamic history variables
!-----------------------------------------------------------------
! Ice dynamics (momentum equation)
!-----------------------------------------------------------------
if (kdyn == 1) call evp (dt)
if (kdyn == 2) call eap (dt)
if (kdyn == 3) call implicit_solver (dt)
!-----------------------------------------------------------------
! Compute strocnxT_iavg, strocnyT_iavg for thermo and coupling
!-----------------------------------------------------------------
! strocn computed on U, N, E as needed. Map strocn U divided by aiU to T
! conservation requires aiU be divided before averaging
work1 = c0
work2 = c0
!$OMP PARALLEL DO PRIVATE(iblk,i,j,ilo,ihi,jlo,jhi,this_block)
do iblk = 1, nblocks
this_block = get_block(blocks_ice(iblk), iblk)
ilo = this_block%ilo