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sbcice_lim_2.F90 in branches/2015/dev_r5218_CNRS17_coupling/NEMOGCM/NEMO/OPA_SRC/SBC – NEMO

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source: branches/2015/dev_r5218_CNRS17_coupling/NEMOGCM/NEMO/OPA_SRC/SBC/sbcice_lim_2.F90 @ 5362

Last change on this file since 5362 was 5362, checked in by vancop, 9 years ago
update CLIO forcing to match with new standards
Property svn:keywords set to `Id`
File size: 14.5 KB

Rev	Line
[888]	1	MODULE sbcice_lim_2
	2	!!======================================================================
	3	!! * MODULE sbcice_lim_2 *
[2528]	4	!! Surface module : update surface ocean boundary condition over ice covered area using LIM sea-ice model
	5	!! Sea-Ice model : LIM-2 Sea ice model time-stepping
[888]	6	!!======================================================================
[1218]	7	!! History : 1.0 ! 06-2006 (G. Madec) from icestp_2.F90
	8	!! 3.0 ! 08-2008 (S. Masson, E. .... ) coupled interface
[2528]	9	!! 3.3 ! 05-2009 (G.Garric) addition of the lim2_evp case
[888]	10	!!----------------------------------------------------------------------
	11	#if defined key_lim2
	12	!!----------------------------------------------------------------------
[2528]	13	!! 'key_lim2' : LIM-2 sea-ice model
[888]	14	!!----------------------------------------------------------------------
[2528]	15	!! sbc_ice_lim_2 : sea-ice model time-stepping and update ocean sbc over ice-covered area
[888]	16	!!----------------------------------------------------------------------
[2528]	17	USE oce ! ocean dynamics and tracers
	18	USE dom_oce ! ocean space and time domain
[888]	19	USE ice_2
[1270]	20	USE par_ice_2
[888]	21	USE iceini_2
	22	USE dom_ice_2
	23
[2528]	24	USE sbc_oce ! Surface boundary condition: ocean fields
	25	USE sbc_ice ! Surface boundary condition: ice fields
	26	USE sbcblk_core ! Surface boundary condition: CORE bulk
	27	USE sbcblk_clio ! Surface boundary condition: CLIO bulk
	28	USE sbccpl ! Surface boundary condition: coupled interface
[888]	29	USE albedo
	30
[2528]	31	USE phycst ! Define parameters for the routines
	32	USE eosbn2 ! equation of state
[888]	33	USE limdyn_2
	34	USE limtrp_2
	35	USE limdmp_2
	36	USE limthd_2
[2528]	37	USE limsbc_2 ! sea surface boundary condition
[888]	38	USE limdia_2
	39	USE limwri_2
	40	USE limrst_2
	41
[2528]	42	USE c1d ! 1D vertical configuration
[888]	43
[2528]	44	USE lbclnk ! lateral boundary condition - MPP link
	45	USE lib_mpp ! MPP library
[3294]	46	USE wrk_nemo ! work arrays
[2528]	47	USE iom ! I/O manager library
	48	USE in_out_manager ! I/O manager
	49	USE prtctl ! Print control
	50
[3680]	51	# if defined key_agrif
	52	USE agrif_ice
	53	USE agrif_lim2_update
	54	# endif
	55
[4769]	56	#if defined key_bdy
	57	USE bdyice_lim ! unstructured open boundary data (bdy_ice_lim routine)
	58	#endif
	59
[888]	60	IMPLICIT NONE
	61	PRIVATE
	62
	63	PUBLIC sbc_ice_lim_2 ! routine called by sbcmod.F90
	64
	65	!! * Substitutions
	66	# include "domzgr_substitute.h90"
	67	# include "vectopt_loop_substitute.h90"
	68	!!----------------------------------------------------------------------
[2528]	69	!! NEMO/OPA 3.3 , NEMO Consortium (2010)
[1146]	70	!! $Id$
[2528]	71	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[888]	72	!!----------------------------------------------------------------------
	73	CONTAINS
	74
[1218]	75	SUBROUTINE sbc_ice_lim_2( kt, ksbc )
[888]	76	!!---------------------------------------------------------------------
	77	!! * ROUTINE sbc_ice_lim_2 *
	78	!!
	79	!! ** Purpose : update the ocean surface boundary condition via the
	80	!! Louvain la Neuve Sea Ice Model time stepping
	81	!!
	82	!! ** Method : ice model time stepping
	83	!! - call the ice dynamics routine
	84	!! - call the ice advection/diffusion routine
	85	!! - call the ice thermodynamics routine
	86	!! - call the routine that computes mass and
	87	!! heat fluxes at the ice/ocean interface
	88	!! - save the outputs
	89	!! - save the outputs for restart when necessary
	90	!!
	91	!! ** Action : - time evolution of the LIM sea-ice model
	92	!! - update all sbc variables below sea-ice:
[3625]	93	!! utau, vtau, taum, wndm, qns , qsr, emp , sfx
[888]	94	!!---------------------------------------------------------------------
	95	INTEGER, INTENT(in) :: kt ! ocean time step
[1218]	96	INTEGER, INTENT(in) :: ksbc ! type of sbc ( =3 CLIO bulk ; =4 CORE bulk ; =5 coupled )
[888]	97	!!
	98	INTEGER :: ji, jj ! dummy loop indices
[4990]	99	REAL(wp), DIMENSION(:,:,:), POINTER :: zalb_os ! ice albedo under overcast sky
	100	REAL(wp), DIMENSION(:,:,:), POINTER :: zalb_cs ! ice albedo under clear sky
	101	REAL(wp), DIMENSION(:,:,:), POINTER :: zalb_ice ! mean ice albedo
	102	REAL(wp), DIMENSION(:,:,:), POINTER :: zsist ! ice surface temperature (K)
[5220]	103	REAL(wp), DIMENSION(:,: ), POINTER :: zutau_ice, zvtau_ice
[888]	104	!!----------------------------------------------------------------------
	105
	106	IF( kt == nit000 ) THEN
	107	IF(lwp) WRITE(numout,*)
	108	IF(lwp) WRITE(numout,*) 'sbc_ice_lim_2 : update ocean surface boudary condition'
	109	IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~ via Louvain la Neuve Ice Model (LIM) time stepping'
[2528]	110	!
[888]	111	CALL ice_init_2
[3680]	112	!
	113	# if defined key_agrif
	114	IF( .NOT. Agrif_Root() ) CALL Agrif_InitValues_cont_lim2 ! AGRIF: set the meshes
	115	# endif
[888]	116	ENDIF
	117
[2528]	118	! !----------------------!
	119	IF( MOD( kt-1, nn_fsbc ) == 0 ) THEN ! Ice time-step only !
	120	! !----------------------!
[3680]	121	# if defined key_agrif
	122	IF( .NOT. Agrif_Root() ) lim_nbstep = MOD(lim_nbstep,Agrif_rhot()&
	123	&*Agrif_PArent(nn_fsbc)/REAL(nn_fsbc)) + 1
	124	# endif
[5220]	125
	126	CALL wrk_alloc( jpi,jpj , zutau_ice, zvtau_ice)
	127	CALL wrk_alloc( jpi,jpj,1, zalb_os, zalb_cs, zalb_ice, zsist )
	128
[2528]	129	! Bulk Formulea !
	130	!----------------!
[888]	131	! ... mean surface ocean current at ice dynamics point
[2528]	132	SELECT CASE( cp_ice_msh )
	133	CASE( 'I' ) !== B-grid ice dynamics : I-point (i.e. F-point with sea-ice indexation)
	134	DO jj = 2, jpj
	135	DO ji = 2, jpi ! NO vector opt. possible
[4990]	136	u_oce(ji,jj) = 0.5_wp * ( ssu_m(ji-1,jj ) * umask(ji-1,jj ,1) &
[5220]	137	& + ssu_m(ji-1,jj-1) * umask(ji-1,jj-1,1) ) * tmu(ji,jj)
[4990]	138	v_oce(ji,jj) = 0.5_wp * ( ssv_m(ji ,jj-1) * vmask(ji ,jj-1,1) &
[5220]	139	& + ssv_m(ji-1,jj-1) * vmask(ji-1,jj-1,1) ) * tmu(ji,jj)
[2528]	140	END DO
[888]	141	END DO
[2528]	142	CALL lbc_lnk( u_oce, 'I', -1. ) ! I-point (i.e. F-point with ice indices)
	143	CALL lbc_lnk( v_oce, 'I', -1. ) ! I-point (i.e. F-point with ice indices)
	144	!
	145	CASE( 'C' ) !== C-grid ice dynamics : U & V-points (same as ocean)
[4990]	146	u_oce(:,:) = ssu_m(:,:) * umask(:,:,1) ! mean surface ocean current at ice velocity point
	147	v_oce(:,:) = ssv_m(:,:) * vmask(:,:,1)
[2528]	148	!
	149	END SELECT
[888]	150
	151	! ... masked sea surface freezing temperature [Kelvin] (set to rt0 over land)
[4990]	152	tfu(:,:) = eos_fzp( sss_m ) + rt0
[888]	153
[1109]	154	zsist (:,:,1) = sist (:,:) + rt0 * ( 1. - tmask(:,:,1) )
[888]	155
[4990]	156	! Ice albedo
	157
[2715]	158	CALL albedo_ice( zsist, reshape( hicif, (/jpi,jpj,1/) ), &
	159	reshape( hsnif, (/jpi,jpj,1/) ), &
[4990]	160	zalb_cs, zalb_os )
[888]	161
[4990]	162	SELECT CASE( ksbc )
	163	CASE( jp_core , jp_cpl ) ! CORE and COUPLED bulk formulations
	164
	165	! albedo depends on cloud fraction because of non-linear spectral effects
	166	zalb_ice(:,:,:) = ( 1. - cldf_ice ) * zalb_cs(:,:,:) + cldf_ice * zalb_os(:,:,:)
	167	! In CLIO the cloud fraction is read in the climatology and the all-sky albedo
	168	! (zalb_ice) is computed within the bulk routine
	169
	170	END SELECT
	171
[888]	172	! ... Sea-ice surface boundary conditions output from bulk formulae :
[1469]	173	! - utau_ice ! surface ice stress i-component (I-point) [N/m2]
	174	! - vtau_ice ! surface ice stress j-component (I-point) [N/m2]
[888]	175	! - qns_ice ! non solar heat flux over ice (T-point) [W/m2]
	176	! - qsr_ice ! solar heat flux over ice (T-point) [W/m2]
	177	! - qla_ice ! latent heat flux over ice (T-point) [W/m2]
	178	! - dqns_ice ! non solar heat sensistivity (T-point) [W/m2]
	179	! - dqla_ice ! latent heat sensistivity (T-point) [W/m2]
	180	! - tprecip ! total precipitation (T-point) [Kg/m2/s]
	181	! - sprecip ! solid precipitation (T-point) [Kg/m2/s]
	182	! - fr1_i0 ! 1sr fraction of qsr penetration in ice [%]
	183	! - fr2_i0 ! 2nd fraction of qsr penetration in ice [%]
	184	!
[1218]	185	SELECT CASE( ksbc )
[4990]	186	CASE( jp_clio ) ! CLIO bulk formulation
[5362]	187	! CALL blk_ice_clio( zsist, zalb_cs , zalb_os , zalb_ice , &
	188	! & utau_ice , vtau_ice , qns_ice , qsr_ice, &
	189	! & qla_ice , dqns_ice , dqla_ice , &
	190	! & tprecip , sprecip , &
	191	! & fr1_i0 , fr2_i0 , cp_ice_msh , jpl )
	192	CALL blk_ice_clio_tau
	193	CALL blk_ice_clio_flx( zsist, zalb_cs, zalb_os, zalb_ice )
[914]	194
[4990]	195	CASE( jp_core ) ! CORE bulk formulation
[5357]	196	CALL blk_ice_core_tau
	197	CALL blk_ice_core_flx( zsist, zalb_ice )
[4990]	198	IF( ltrcdm2dc_ice ) CALL blk_ice_meanqsr( zalb_ice, qsr_ice_mean, jpl )
[4306]	199
[4990]	200	CASE( jp_cpl ) ! Coupled formulation : atmosphere-ice stress only (fluxes provided after ice dynamics)
[1469]	201	CALL sbc_cpl_ice_tau( utau_ice , vtau_ice )
[888]	202	END SELECT
[5220]	203
	204	IF( ln_mixcpl) THEN
	205	CALL sbc_cpl_ice_tau( zutau_ice , zvtau_ice )
	206	utau_ice(:,:) = utau_ice(:,:) * xcplmask(:,:,0) + zutau_ice(:,:) * ( 1. - xcplmask(:,:,0) )
	207	vtau_ice(:,:) = vtau_ice(:,:) * xcplmask(:,:,0) + zvtau_ice(:,:) * ( 1. - xcplmask(:,:,0) )
	208	ENDIF
[888]	209
[1482]	210	CALL iom_put( 'utau_ice', utau_ice ) ! Wind stress over ice along i-axis at I-point
	211	CALL iom_put( 'vtau_ice', vtau_ice ) ! Wind stress over ice along j-axis at I-point
	212
[888]	213	IF(ln_ctl) THEN ! print mean trends (used for debugging)
	214	CALL prt_ctl_info( 'Ice Forcings ' )
[1469]	215	CALL prt_ctl( tab2d_1=tprecip ,clinfo1=' sbc_ice_lim: precip : ', tab2d_2=sprecip , clinfo2=' Snow : ' )
	216	CALL prt_ctl( tab2d_1=utau_ice,clinfo1=' sbc_ice_lim: utau_ice: ', tab2d_2=vtau_ice, clinfo2=' vtau_ice: ' )
	217	CALL prt_ctl( tab2d_1=sst_m ,clinfo1=' sbc_ice_lim: sst : ', tab2d_2=sss_m , clinfo2=' sss : ' )
[1470]	218	CALL prt_ctl( tab2d_1=u_oce ,clinfo1=' sbc_ice_lim: u_io : ', tab2d_2=v_oce , clinfo2=' v_io : ' )
[1469]	219	CALL prt_ctl( tab2d_1=hsnif ,clinfo1=' sbc_ice_lim: hsnif 1: ', tab2d_2=hicif , clinfo2=' hicif : ' )
	220	CALL prt_ctl( tab2d_1=frld ,clinfo1=' sbc_ice_lim: frld 1: ', tab2d_2=sist , clinfo2=' sist : ' )
[888]	221	ENDIF
	222
	223	! ---------------- !
	224	! Ice model step !
	225	! ---------------- !
[2528]	226	numit = numit + nn_fsbc ! Ice model time step
[1239]	227
[2528]	228	CALL lim_rst_opn_2 ( kt ) ! Open Ice restart file
	229	IF( .NOT. lk_c1d ) THEN ! Ice dynamics & transport (except in 1D case)
	230	CALL lim_dyn_2 ( kt ) ! Ice dynamics ( rheology/dynamics )
	231	CALL lim_trp_2 ( kt ) ! Ice transport ( Advection/diffusion )
	232	IF( ln_limdmp ) CALL lim_dmp_2 ( kt ) ! Ice damping
[4769]	233	#if defined key_bdy
	234	CALL bdy_ice_lim( kt ) ! bdy ice thermo
	235	#endif
[2528]	236	END IF
	237	! ! Ice surface fluxes in coupled mode
[5220]	238	IF( ln_cpl ) THEN ! pure coupled and mixed forced-coupled configurations
[3294]	239	a_i(:,:,1)=fr_i
	240	CALL sbc_cpl_ice_flx( frld, &
[2715]	241	! optional arguments, used only in 'mixed oce-ice' case
[4990]	242	& palbi = zalb_ice, psst = sst_m, pist = zsist )
[3294]	243	sprecip(:,:) = - emp_ice(:,:) ! Ugly patch, WARNING, in coupled mode, sublimation included in snow (parsub = 0.)
	244	ENDIF
[2528]	245	CALL lim_thd_2 ( kt ) ! Ice thermodynamics
	246	CALL lim_sbc_flx_2 ( kt ) ! update surface ocean mass, heat & salt fluxes
[4306]	247	#if defined key_top
	248	IF( ltrcdm2dc_ice )CALL lim_bio_meanqsr_2
	249	#endif
[1481]	250
[4621]	251	IF( .NOT. lk_mpp )THEN
	252	IF( MOD( kt+nn_fsbc-1, ninfo ) == 0 .OR. ntmoy == 1 ) &
[2528]	253	& CALL lim_dia_2 ( kt ) ! Ice Diagnostics
[4621]	254	ENDIF
[1482]	255	# if ! defined key_iomput
[2528]	256	CALL lim_wri_2 ( kt ) ! Ice outputs
[1482]	257	# endif
[2528]	258	IF( lrst_ice ) CALL lim_rst_write_2( kt ) ! Ice restart file
[888]	259	!
[3680]	260	# if defined key_agrif && defined key_lim2
	261	IF( .NOT. Agrif_Root() ) CALL agrif_update_lim2( kt )
	262	# endif
	263	!
[5220]	264	CALL wrk_dealloc( jpi,jpj , zutau_ice, zvtau_ice)
	265	CALL wrk_dealloc( jpi,jpj,1, zalb_os, zalb_cs, zalb_ice, zsist )
	266	!
[2528]	267	ENDIF ! End sea-ice time step only
[888]	268	!
[2528]	269	! !--------------------------!
	270	! ! at all ocean time step !
	271	! !--------------------------!
	272	!
	273	! ! Update surface ocean stresses (only in ice-dynamic case)
	274	! ! otherwise the atm.-ocean stresses are used everywhere
	275	IF( ln_limdyn ) CALL lim_sbc_tau_2( kt, ub(:,:,1), vb(:,:,1) ) ! using before instantaneous surf. currents
	276	!
[888]	277	END SUBROUTINE sbc_ice_lim_2
	278
	279	#else
	280	!!----------------------------------------------------------------------
	281	!! Default option Dummy module NO LIM 2.0 sea-ice model
	282	!!----------------------------------------------------------------------
	283	CONTAINS
[1218]	284	SUBROUTINE sbc_ice_lim_2 ( kt, ksbc ) ! Dummy routine
[2715]	285	INTEGER, INTENT(in) :: kt, ksbc
[1218]	286	WRITE(,) 'sbc_ice_lim_2: You should not have seen this print! error?', kt, ksbc
[888]	287	END SUBROUTINE sbc_ice_lim_2
	288	#endif
	289
	290	!!======================================================================
	291	END MODULE sbcice_lim_2

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