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A version that uses local arrays for albedo over land and ice.
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@tanyasmirnova
tanyasmirnova committed Nov 4, 2020
1 parent 58bee86 commit 7b0434b
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77 changes: 28 additions & 49 deletions physics/sfc_drv_ruc.F90
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Original file line number Diff line number Diff line change
Expand Up @@ -204,8 +204,6 @@ end subroutine lsm_ruc_finalize
! shdmin - real, min fractional coverage of green veg im !
! shdmax - real, max fractnl cover of green veg (not used) im !
! snoalb - real, upper bound on max albedo over deep snow im !
! sfalb - real, mean sfc diffused sw albedo with effect !
! of snow (fractional) im !
! flag_iter- logical, im !
! flag_guess-logical, im !
! isot - integer, sfc soil type data source zobler or statsgo !
Expand Down Expand Up @@ -265,8 +263,8 @@ subroutine lsm_ruc_run & ! inputs
& ch_wat, tskin_wat, &
! --- in/outs for ice and land
& semis_lnd, semis_ice, &
& sncovr1_lnd, weasd_lnd, snwdph_lnd, tskin_lnd, sfalb_lnd, &
& sncovr1_ice, weasd_ice, snwdph_ice, tskin_ice, sfalb_ice, &
& sncovr1_lnd, weasd_lnd, snwdph_lnd, tskin_lnd, &
& sncovr1_ice, weasd_ice, snwdph_ice, tskin_ice, &
! for land
& smois, tsice, tslb, sh2o, keepfr, smfrkeep, & ! on RUC levels
& canopy, trans, tsurf_lnd, tsnow_lnd, z0rl_lnd, &
Expand Down Expand Up @@ -335,11 +333,11 @@ subroutine lsm_ruc_run & ! inputs
! for land
& weasd_lnd, snwdph_lnd, tskin_lnd, &
& tsurf_lnd, z0rl_lnd, tsnow_lnd, &
& sfcqc_lnd, sfcqv_lnd, sfcdew_lnd, sfalb_lnd, &
& sfcqc_lnd, sfcqv_lnd, sfcdew_lnd, &
! for ice
& weasd_ice, snwdph_ice, tskin_ice, &
& tsurf_ice, z0rl_ice, tsnow_ice, &
& sfcqc_ice, sfcqv_ice, sfcdew_ice, fice, tice, sfalb_ice
& sfcqc_ice, sfcqv_ice, sfcdew_ice, fice, tice

! --- in
real (kind=kind_phys), dimension(im), intent(in) :: &
Expand Down Expand Up @@ -372,12 +370,12 @@ subroutine lsm_ruc_run & ! inputs
& acsnow_old, wetness_old, &
! for land
& weasd_lnd_old, snwdph_lnd_old, tskin_lnd_old, &
& tsnow_lnd_old, snowfallac_lnd_old, sfalb_lnd_old, &
& tsnow_lnd_old, snowfallac_lnd_old, &
& sfcqv_lnd_old, sfcqc_lnd_old, z0rl_lnd_old, &
& sncovr1_lnd_old, &
! for ice
& weasd_ice_old, snwdph_ice_old, tskin_ice_old, &
& tsnow_ice_old, snowfallac_ice_old, sfalb_ice_old, &
& tsnow_ice_old, snowfallac_ice_old, &
& sfcqv_ice_old, sfcqc_ice_old, z0rl_ice_old, &
& sncovr1_ice_old

Expand Down Expand Up @@ -486,30 +484,6 @@ subroutine lsm_ruc_run & ! inputs
write (0,*)'flag_restart =',flag_restart
endif

!if( (flag_init .and. iter==1)) then
do i = 1, im ! n - horizontal loop
! - Initialize land and ice surface albedo
if(land(i)) then
! snow-free
sfalb_lnd(i) = max(0.01, 0.5 * (alvwf(i) + alnwf(i)))
if (weasd_lnd(i) > 0.) then
!- averaged of snow-free and snow-covered
sfalb_lnd(i) = sfalb_lnd(i) * (1.-sncovr1_lnd(i)) + snoalb(i) * sncovr1_lnd(i)
endif
endif

if(icy(i)) then
! snow-free ice
sfalb_ice(i) = 0.55
if (weasd_ice(i) > 0.) then
! averaged of snow-free and snow-covered ice
sfalb_ice(i) = sfalb_ice(i) * (1.-sncovr1_ice(i)) + 0.75 * sncovr1_ice(i)
endif
endif

enddo ! i
!endif ! flag_init=.true.,iter=1

ims = 1
its = 1
ime = 1
Expand Down Expand Up @@ -586,7 +560,6 @@ subroutine lsm_ruc_run & ! inputs
tskin_lnd_old(i) = tskin_lnd(i)
tsnow_lnd_old(i) = tsnow_lnd(i)
snowfallac_lnd_old(i) = snowfallac_lnd(i)
sfalb_lnd_old(i) = sfalb_lnd(i)
sfcqv_lnd_old(i) = sfcqv_lnd(i)
sfcqc_lnd_old(i) = sfcqc_lnd(i)
z0rl_lnd_old(i) = z0rl_lnd(i)
Expand All @@ -597,7 +570,6 @@ subroutine lsm_ruc_run & ! inputs
tskin_ice_old(i) = tskin_ice(i)
tsnow_ice_old(i) = tsnow_ice(i)
snowfallac_ice_old(i) = snowfallac_ice(i)
sfalb_ice_old(i) = sfalb_ice(i)
sfcqv_ice_old(i) = sfcqv_ice(i)
sfcqc_ice_old(i) = sfcqc_ice(i)
z0rl_ice_old(i) = z0rl_ice(i)
Expand Down Expand Up @@ -778,7 +750,6 @@ subroutine lsm_ruc_run & ! inputs
!!\n \a sfcems - surface emmisivity -> sfcemis
!!\n \a 0.5*(alvwf + alnwf) - backround snow-free surface albedo (fraction) -> albbck
!!\n \a snoalb - upper bound on maximum albedo over deep snow -> snoalb1d
!!\n \a sfalb - surface albedo including snow effect (unitless fraction) -> alb

if(ivegsrc == 1) then ! IGBP - MODIS
vtype_wat(i,j) = 17 ! 17 - water (oceans and lakes) in MODIS
Expand Down Expand Up @@ -837,16 +808,23 @@ subroutine lsm_ruc_run & ! inputs
!!\n \a qcg_lnd - cloud water mixing ratio at surface (\f$kg kg^{-1}\f$)
!!\n \a solnet_lnd - net sw radiation flux (dn-up) (\f$W m^{-2}\f$)

solnet_lnd(i,j) = dswsfc(i)*(1.-sfalb_lnd(i)) !snet(i) !..net sw rad flx (dn-up) at sfc in w/m2
qvg_lnd(i,j) = sfcqv_lnd(i)
qsfc_lnd(i,j) = sfcqv_lnd(i)/(1.+sfcqv_lnd(i))
qsg_lnd(i,j) = rslf(prsl1(i),tsurf_lnd(i))
qcg_lnd(i,j) = sfcqc_lnd(i)
sfcems_lnd(i,j) = semis_lnd(i)
sncovr_lnd(i,j) = sncovr1_lnd(i)
snoalb1d_lnd(i,j) = snoalb(i)
albbck_lnd(i,j) = max(0.01, 0.5 * (alvwf(i) + alnwf(i)))
! sfalb_lnd takes into account snow on the ground
alb_lnd(i,j) = sfalb_lnd(i)
! alb_lnd takes into account snow on the ground
if (sncovr_lnd(i,j) > 0.) then
!- averaged of snow-free and snow-covered
alb_lnd(i,j) = albbck_lnd(i,j) * (1.-sncovr_lnd(i,j)) + snoalb(i) * sncovr_lnd(i,j)
else
alb_lnd(i,j) = albbck_lnd(i,j)
endif
solnet_lnd(i,j) = dswsfc(i)*(1.-alb_lnd(i,j)) !snet(i) !..net sw rad flx (dn-up) at sfc in w/m2

cmc(i,j) = canopy(i) ! [mm]
soilt_lnd(i,j) = tsurf_lnd(i) ! clu_q2m_iter
tsnav_lnd(i,j) = 0.5*(soilt_lnd(i,j) + soilt1_lnd(i,j)) - 273.15
Expand Down Expand Up @@ -880,7 +858,6 @@ subroutine lsm_ruc_run & ! inputs
snowh_lnd(i,j) = snwdph_lnd(i) * 0.001 ! convert from mm to m
sneqv_lnd(i,j) = weasd_lnd(i) ! [mm]
snfallac_lnd(i,j) = snowfallac_lnd(i)
sncovr_lnd(i,j) = sncovr1_lnd(i)
!> -- sanity checks on sneqv and snowh
if (sneqv_lnd(i,j) /= 0.0 .and. snowh_lnd(i,j) == 0.0) then
snowh_lnd(i,j) = 0.003 * sneqv_lnd(i,j) ! snow density ~300 kg m-3
Expand Down Expand Up @@ -914,7 +891,6 @@ subroutine lsm_ruc_run & ! inputs
write (0,*)'znt(i,j) =',i,j,znt_lnd(i,j)
write (0,*)'z0(i,j) =',i,j,z0_lnd(i,j)
write (0,*)'snoalb1d(i,j) =',i,j,snoalb1d_lnd(i,j)
write (0,*)'alb(i,j) =',i,j,alb_lnd(i,j)
write (0,*)'landusef(i,:,j) =',i,j,landusef(i,:,j)
write (0,*)'soilctop(i,:,j) =',i,j,soilctop(i,:,j)
write (0,*)'nlcat=',nlcat
Expand Down Expand Up @@ -1105,7 +1081,6 @@ subroutine lsm_ruc_run & ! inputs
! ---- ... outside RUC LSM, roughness uses cm as unit
! (update after snow's effect)
z0rl_lnd(i) = znt_lnd(i,j)*100.
sfalb_lnd(i)= alb_lnd(i,j)

do k = 1, lsoil_ruc
smois(i,k) = smsoil(i,k,j)
Expand All @@ -1124,15 +1099,23 @@ subroutine lsm_ruc_run & ! inputs
if (flag_ice_uncoupled(i)) then ! at least some ice in the grid cell
!-- ice point

solnet_ice(i,j) = dswsfc(i)*(1.-sfalb_ice(i))
sncovr_ice(i,j) = sncovr1_ice(i)
snoalb1d_ice(i,j) = 0.75 ! RAP value for max snow alb on ice
albbck_ice(i,j) = 0.55 ! RAP value for ice alb
if (sncovr_ice(i,j) > 0.) then
!- averaged of snow-free and snow-covered ice
alb_ice(i,j) = albbck_ice(i,j) * (1.-sncovr_ice(i,j)) + snoalb1d_ice(i,j) * sncovr_ice(i,j)
else
! snow-free ice
alb_ice(i,j) = albbck_ice(i,j)
endif

solnet_ice(i,j) = dswsfc(i)*(1.-alb_ice(i,j))
qvg_ice(i,j) = sfcqv_ice(i)
qsfc_ice(i,j) = sfcqv_ice(i)/(1.+sfcqv_ice(i))
qsg_ice(i,j) = rslf(prsl1(i),tsurf_ice(i))
qcg_ice(i,j) = sfcqc_ice(i)
sfcems_ice(i,j) = semis_ice(i)
snoalb1d_ice(i,j) = 0.75 ! RAP value for max snow alb on ice
albbck_ice(i,j) = 0.55 ! RAP value for ice alb
alb_ice(i,j) = sfalb_ice(i)
soilt_ice(i,j) = tsurf_ice(i) ! clu_q2m_iter
tsnav_ice(i,j) = 0.5*(soilt_ice(i,j) + soilt1_ice(i,j)) - 273.15
if (tsnow_ice(i) > 0. .and. tsnow_ice(i) < 273.15) then
Expand All @@ -1157,7 +1140,6 @@ subroutine lsm_ruc_run & ! inputs
cmm_ice(i) = cm_ice (i) * wind(i)
chh_ice(i) = chs_ice(i,j) * rho(i)

sncovr_ice(i,j) = sncovr1_ice(i)

snowh_ice(i,j) = snwdph_ice(i) * 0.001 ! convert from mm to m
sneqv_ice(i,j) = weasd_ice(i) ! [mm]
Expand Down Expand Up @@ -1238,7 +1220,6 @@ subroutine lsm_ruc_run & ! inputs
weasd_ice(i) = sneqv_ice(i,j) ! mm
sncovr1_ice(i) = sncovr_ice(i,j)
z0rl_ice(i) = znt_ice(i,j)*100.
sfalb_ice(i)= alb_ice(i,j)

do k = 1, lsoil_ruc
tsice(i,k) = stsice(i,k,j)
Expand Down Expand Up @@ -1315,7 +1296,6 @@ subroutine lsm_ruc_run & ! inputs
tsnow_lnd(i) = tsnow_lnd_old(i)
snowfallac_lnd(i) = snowfallac_lnd_old(i)
acsnow(i) = acsnow_old(i)
sfalb_lnd(i) = sfalb_lnd_old(i)
sfcqv_lnd(i) = sfcqv_lnd_old(i)
sfcqc_lnd(i) = sfcqc_lnd_old(i)
wetness(i) = wetness_old(i)
Expand All @@ -1327,7 +1307,6 @@ subroutine lsm_ruc_run & ! inputs
tskin_ice(i) = tskin_ice_old(i)
tsnow_ice(i) = tsnow_ice_old(i)
snowfallac_ice(i) = snowfallac_ice_old(i)
sfalb_ice(i) = sfalb_ice_old(i)
sfcqv_ice(i) = sfcqv_ice_old(i)
sfcqc_ice(i) = sfcqc_ice_old(i)
z0rl_ice(i) = z0rl_ice_old(i)
Expand Down
18 changes: 0 additions & 18 deletions physics/sfc_drv_ruc.meta
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Original file line number Diff line number Diff line change
Expand Up @@ -870,15 +870,6 @@
kind = kind_phys
intent = inout
optional = F
[sfalb_lnd]
standard_name = surface_diffused_shortwave_albedo_over_land
long_name = mean surface diffused sw albedo over land with snow effect
units = frac
dimensions = (horizontal_dimension)
type = real
kind = kind_phys
intent = inout
optional = F
[sncovr1_ice]
standard_name = surface_snow_area_fraction_over_ice
long_name = surface snow area fraction over ice
Expand Down Expand Up @@ -915,15 +906,6 @@
kind = kind_phys
intent = inout
optional = F
[sfalb_ice]
standard_name = surface_diffused_shortwave_albedo_over_ice
long_name = mean surface diffused sw albedo over ice with snow effect
units = frac
dimensions = (horizontal_dimension)
type = real
kind = kind_phys
intent = inout
optional = F
[smois]
standard_name = volume_fraction_of_soil_moisture_for_land_surface_model
long_name = volumetric fraction of soil moisture for lsm
Expand Down

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