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sbcice_lim_2.F90 @ 5082

Last change on this file since 5082 was 4990, checked in by timgraham, 9 years ago

Merged branches/2014/dev_MERGE_2014 back onto the trunk as follows:

In the working copy of branch ran:
svn merge svn+ssh://forge.ipsl.jussieu.fr/ipsl/forge/projets/nemo/svn/trunk@HEAD
1 conflict in LIM_SRC_3/limdiahsb.F90
Resolved by keeping the version from dev_MERGE_2014 branch
and commited at r4989

In working copy run:
svn switch svn+ssh://forge.ipsl.jussieu.fr/ipsl/forge/projets/nemo/svn/trunk
to switch working copy

Run:
svn merge --reintegrate svn+ssh://forge.ipsl.jussieu.fr/ipsl/forge/projets/nemo/svn/branches/2014/dev_MERGE_2014
to merge the branch into the trunk - no conflicts at this stage.

Property svn:keywords set to Id

File size: 14.1 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)
[888]	103	!!----------------------------------------------------------------------
	104
[4990]	105	CALL wrk_alloc( jpi,jpj,1, zalb_os, zalb_cs, zalb_ice, zsist )
[2715]	106
[888]	107	IF( kt == nit000 ) THEN
	108	IF(lwp) WRITE(numout,*)
	109	IF(lwp) WRITE(numout,*) 'sbc_ice_lim_2 : update ocean surface boudary condition'
	110	IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~ via Louvain la Neuve Ice Model (LIM) time stepping'
[2528]	111	!
[888]	112	CALL ice_init_2
[3680]	113	!
	114	# if defined key_agrif
	115	IF( .NOT. Agrif_Root() ) CALL Agrif_InitValues_cont_lim2 ! AGRIF: set the meshes
	116	# endif
[888]	117	ENDIF
	118
[2528]	119	! !----------------------!
	120	IF( MOD( kt-1, nn_fsbc ) == 0 ) THEN ! Ice time-step only !
	121	! !----------------------!
[3680]	122	# if defined key_agrif
	123	IF( .NOT. Agrif_Root() ) lim_nbstep = MOD(lim_nbstep,Agrif_rhot()&
	124	&*Agrif_PArent(nn_fsbc)/REAL(nn_fsbc)) + 1
	125	# endif
[2528]	126	! Bulk Formulea !
	127	!----------------!
[888]	128	! ... mean surface ocean current at ice dynamics point
[2528]	129	SELECT CASE( cp_ice_msh )
	130	CASE( 'I' ) !== B-grid ice dynamics : I-point (i.e. F-point with sea-ice indexation)
	131	DO jj = 2, jpj
	132	DO ji = 2, jpi ! NO vector opt. possible
[4990]	133	u_oce(ji,jj) = 0.5_wp * ( ssu_m(ji-1,jj ) * umask(ji-1,jj ,1) &
	134	& + ssu_m(ji-1,jj-1) * umask(ji-1,jj-1,1) ) * tmu(ji,jj)
	135	v_oce(ji,jj) = 0.5_wp * ( ssv_m(ji ,jj-1) * vmask(ji ,jj-1,1) &
	136	& + ssv_m(ji-1,jj-1) * vmask(ji-1,jj-1,1) ) * tmu(ji,jj)
[2528]	137	END DO
[888]	138	END DO
[2528]	139	CALL lbc_lnk( u_oce, 'I', -1. ) ! I-point (i.e. F-point with ice indices)
	140	CALL lbc_lnk( v_oce, 'I', -1. ) ! I-point (i.e. F-point with ice indices)
	141	!
	142	CASE( 'C' ) !== C-grid ice dynamics : U & V-points (same as ocean)
[4990]	143	u_oce(:,:) = ssu_m(:,:) * umask(:,:,1) ! mean surface ocean current at ice velocity point
	144	v_oce(:,:) = ssv_m(:,:) * vmask(:,:,1)
[2528]	145	!
	146	END SELECT
[888]	147
	148	! ... masked sea surface freezing temperature [Kelvin] (set to rt0 over land)
[4990]	149	tfu(:,:) = eos_fzp( sss_m ) + rt0
[888]	150
[1109]	151	zsist (:,:,1) = sist (:,:) + rt0 * ( 1. - tmask(:,:,1) )
[888]	152
[4990]	153	! Ice albedo
	154
[2715]	155	CALL albedo_ice( zsist, reshape( hicif, (/jpi,jpj,1/) ), &
	156	reshape( hsnif, (/jpi,jpj,1/) ), &
[4990]	157	zalb_cs, zalb_os )
[888]	158
[4990]	159	SELECT CASE( ksbc )
	160	CASE( jp_core , jp_cpl ) ! CORE and COUPLED bulk formulations
	161
	162	! albedo depends on cloud fraction because of non-linear spectral effects
	163	zalb_ice(:,:,:) = ( 1. - cldf_ice ) * zalb_cs(:,:,:) + cldf_ice * zalb_os(:,:,:)
	164	! In CLIO the cloud fraction is read in the climatology and the all-sky albedo
	165	! (zalb_ice) is computed within the bulk routine
	166
	167	END SELECT
	168
[888]	169	! ... Sea-ice surface boundary conditions output from bulk formulae :
[1469]	170	! - utau_ice ! surface ice stress i-component (I-point) [N/m2]
	171	! - vtau_ice ! surface ice stress j-component (I-point) [N/m2]
[888]	172	! - qns_ice ! non solar heat flux over ice (T-point) [W/m2]
	173	! - qsr_ice ! solar heat flux over ice (T-point) [W/m2]
	174	! - qla_ice ! latent heat flux over ice (T-point) [W/m2]
	175	! - dqns_ice ! non solar heat sensistivity (T-point) [W/m2]
	176	! - dqla_ice ! latent heat sensistivity (T-point) [W/m2]
	177	! - tprecip ! total precipitation (T-point) [Kg/m2/s]
	178	! - sprecip ! solid precipitation (T-point) [Kg/m2/s]
	179	! - fr1_i0 ! 1sr fraction of qsr penetration in ice [%]
	180	! - fr2_i0 ! 2nd fraction of qsr penetration in ice [%]
	181	!
[1218]	182	SELECT CASE( ksbc )
[4990]	183	CASE( jp_clio ) ! CLIO bulk formulation
	184	CALL blk_ice_clio( zsist, zalb_cs , zalb_os , zalb_ice , &
[1469]	185	& utau_ice , vtau_ice , qns_ice , qsr_ice, &
	186	& qla_ice , dqns_ice , dqla_ice , &
	187	& tprecip , sprecip , &
[2528]	188	& fr1_i0 , fr2_i0 , cp_ice_msh , jpl )
[914]	189
[4990]	190	CASE( jp_core ) ! CORE bulk formulation
	191	CALL blk_ice_core( zsist, u_ice , v_ice , zalb_ice , &
[1469]	192	& utau_ice , vtau_ice , qns_ice , qsr_ice, &
	193	& qla_ice , dqns_ice , dqla_ice , &
	194	& tprecip , sprecip , &
[2528]	195	& fr1_i0 , fr2_i0 , cp_ice_msh , jpl )
[4990]	196	IF( ltrcdm2dc_ice ) CALL blk_ice_meanqsr( zalb_ice, qsr_ice_mean, jpl )
[4306]	197
[4990]	198	CASE( jp_cpl ) ! Coupled formulation : atmosphere-ice stress only (fluxes provided after ice dynamics)
[1469]	199	CALL sbc_cpl_ice_tau( utau_ice , vtau_ice )
[888]	200	END SELECT
	201
[1482]	202	CALL iom_put( 'utau_ice', utau_ice ) ! Wind stress over ice along i-axis at I-point
	203	CALL iom_put( 'vtau_ice', vtau_ice ) ! Wind stress over ice along j-axis at I-point
	204
[888]	205	IF(ln_ctl) THEN ! print mean trends (used for debugging)
	206	CALL prt_ctl_info( 'Ice Forcings ' )
[1469]	207	CALL prt_ctl( tab2d_1=tprecip ,clinfo1=' sbc_ice_lim: precip : ', tab2d_2=sprecip , clinfo2=' Snow : ' )
	208	CALL prt_ctl( tab2d_1=utau_ice,clinfo1=' sbc_ice_lim: utau_ice: ', tab2d_2=vtau_ice, clinfo2=' vtau_ice: ' )
	209	CALL prt_ctl( tab2d_1=sst_m ,clinfo1=' sbc_ice_lim: sst : ', tab2d_2=sss_m , clinfo2=' sss : ' )
[1470]	210	CALL prt_ctl( tab2d_1=u_oce ,clinfo1=' sbc_ice_lim: u_io : ', tab2d_2=v_oce , clinfo2=' v_io : ' )
[1469]	211	CALL prt_ctl( tab2d_1=hsnif ,clinfo1=' sbc_ice_lim: hsnif 1: ', tab2d_2=hicif , clinfo2=' hicif : ' )
	212	CALL prt_ctl( tab2d_1=frld ,clinfo1=' sbc_ice_lim: frld 1: ', tab2d_2=sist , clinfo2=' sist : ' )
[888]	213	ENDIF
	214
	215	! ---------------- !
	216	! Ice model step !
	217	! ---------------- !
[2528]	218	numit = numit + nn_fsbc ! Ice model time step
[1239]	219
[2528]	220	CALL lim_rst_opn_2 ( kt ) ! Open Ice restart file
	221	IF( .NOT. lk_c1d ) THEN ! Ice dynamics & transport (except in 1D case)
	222	CALL lim_dyn_2 ( kt ) ! Ice dynamics ( rheology/dynamics )
	223	CALL lim_trp_2 ( kt ) ! Ice transport ( Advection/diffusion )
	224	IF( ln_limdmp ) CALL lim_dmp_2 ( kt ) ! Ice damping
[4769]	225	#if defined key_bdy
	226	CALL bdy_ice_lim( kt ) ! bdy ice thermo
	227	#endif
[2528]	228	END IF
	229	! ! Ice surface fluxes in coupled mode
[4990]	230	IF( ksbc == jp_cpl ) THEN
[3294]	231	a_i(:,:,1)=fr_i
	232	CALL sbc_cpl_ice_flx( frld, &
[2715]	233	! optional arguments, used only in 'mixed oce-ice' case
[4990]	234	& palbi = zalb_ice, psst = sst_m, pist = zsist )
[3294]	235	sprecip(:,:) = - emp_ice(:,:) ! Ugly patch, WARNING, in coupled mode, sublimation included in snow (parsub = 0.)
	236	ENDIF
[2528]	237	CALL lim_thd_2 ( kt ) ! Ice thermodynamics
	238	CALL lim_sbc_flx_2 ( kt ) ! update surface ocean mass, heat & salt fluxes
[4306]	239	#if defined key_top
	240	IF( ltrcdm2dc_ice )CALL lim_bio_meanqsr_2
	241	#endif
[1481]	242
[4621]	243	IF( .NOT. lk_mpp )THEN
	244	IF( MOD( kt+nn_fsbc-1, ninfo ) == 0 .OR. ntmoy == 1 ) &
[2528]	245	& CALL lim_dia_2 ( kt ) ! Ice Diagnostics
[4621]	246	ENDIF
[1482]	247	# if ! defined key_iomput
[2528]	248	CALL lim_wri_2 ( kt ) ! Ice outputs
[1482]	249	# endif
[2528]	250	IF( lrst_ice ) CALL lim_rst_write_2( kt ) ! Ice restart file
[888]	251	!
[3680]	252	# if defined key_agrif && defined key_lim2
	253	IF( .NOT. Agrif_Root() ) CALL agrif_update_lim2( kt )
	254	# endif
	255	!
[2528]	256	ENDIF ! End sea-ice time step only
[888]	257	!
[2528]	258	! !--------------------------!
	259	! ! at all ocean time step !
	260	! !--------------------------!
	261	!
	262	! ! Update surface ocean stresses (only in ice-dynamic case)
	263	! ! otherwise the atm.-ocean stresses are used everywhere
	264	IF( ln_limdyn ) CALL lim_sbc_tau_2( kt, ub(:,:,1), vb(:,:,1) ) ! using before instantaneous surf. currents
	265	!
[4990]	266	CALL wrk_dealloc( jpi,jpj,1, zalb_os, zalb_cs, zalb_ice, zsist )
[2715]	267	!
[888]	268	END SUBROUTINE sbc_ice_lim_2
	269
	270	#else
	271	!!----------------------------------------------------------------------
	272	!! Default option Dummy module NO LIM 2.0 sea-ice model
	273	!!----------------------------------------------------------------------
	274	CONTAINS
[1218]	275	SUBROUTINE sbc_ice_lim_2 ( kt, ksbc ) ! Dummy routine
[2715]	276	INTEGER, INTENT(in) :: kt, ksbc
[1218]	277	WRITE(,) 'sbc_ice_lim_2: You should not have seen this print! error?', kt, ksbc
[888]	278	END SUBROUTINE sbc_ice_lim_2
	279	#endif
	280
	281	!!======================================================================
	282	END MODULE sbcice_lim_2

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