New URL for NEMO forge! http://forge.nemo-ocean.eu

Since March 2022 along with NEMO 4.2 release, the code development moved to a self-hosted GitLab.
This present forge is now archived and remained online for history.

istate.F90 in trunk/NEMOGCM/NEMO/OPA_SRC/DOM – NEMO

Context Navigation

source: trunk/NEMOGCM/NEMO/OPA_SRC/DOM/istate.F90 @ 5332

Last change on this file since 5332 was 5332, checked in by mathiot, 9 years ago
ISOMIP config code removed (mv to unsupported configuration); correction of bug about initialisation of top friction (ISF only), about coastline modification if ISF activated and top and bottom e3uw if ISF.
Property svn:keywords set to `Id`
File size: 27.4 KB

Rev	Line
[3]	1	MODULE istate
	2	!!======================================================================
	3	!! * MODULE istate *
	4	!! Ocean state : initial state setting
	5	!!=====================================================================
[2104]	6	!! History : OPA ! 1989-12 (P. Andrich) Original code
	7	!! 5.0 ! 1991-11 (G. Madec) rewritting
	8	!! 6.0 ! 1996-01 (G. Madec) terrain following coordinates
	9	!! 8.0 ! 2001-09 (M. Levy, M. Ben Jelloul) istate_eel
	10	!! 8.0 ! 2001-09 (M. Levy, M. Ben Jelloul) istate_uvg
	11	!! NEMO 1.0 ! 2003-08 (G. Madec, C. Talandier) F90: Free form, modules + EEL R5
	12	!! - ! 2004-05 (A. Koch-Larrouy) istate_gyre
	13	!! 2.0 ! 2006-07 (S. Masson) distributed restart using iom
	14	!! 3.3 ! 2010-10 (C. Ethe) merge TRC-TRA
[3294]	15	!! 3.4 ! 2011-04 (G. Madec) Merge of dtatem and dtasal & suppression of tb,tn/sb,sn
[508]	16	!!----------------------------------------------------------------------
[3]	17
	18	!!----------------------------------------------------------------------
	19	!! istate_init : initial state setting
	20	!! istate_tem : analytical profile for initial Temperature
	21	!! istate_sal : analytical profile for initial Salinity
	22	!! istate_eel : initial state setting of EEL R5 configuration
[93]	23	!! istate_gyre : initial state setting of GYRE configuration
[3]	24	!! istate_uvg : initial velocity in geostropic balance
	25	!!----------------------------------------------------------------------
	26	USE oce ! ocean dynamics and active tracers
	27	USE dom_oce ! ocean space and time domain
[4245]	28	USE c1d ! 1D vertical configuration
[2104]	29	USE daymod ! calendar
	30	USE eosbn2 ! eq. of state, Brunt Vaisala frequency (eos routine)
[3]	31	USE ldftra_oce ! ocean active tracers: lateral physics
	32	USE zdf_oce ! ocean vertical physics
	33	USE phycst ! physical constants
[3294]	34	USE dtatsd ! data temperature and salinity (dta_tsd routine)
[4245]	35	USE dtauvd ! data: U & V current (dta_uvd routine)
[544]	36	USE zpshde ! partial step: hor. derivative (zps_hde routine)
	37	USE eosbn2 ! equation of state (eos bn2 routine)
[593]	38	USE domvvl ! varying vertical mesh
	39	USE dynspg_oce ! pressure gradient schemes
[4370]	40	USE dynspg_flt ! filtered free surface
[3764]	41	USE sol_oce ! ocean solver variables
[4990]	42	!
	43	USE in_out_manager ! I/O manager
	44	USE iom ! I/O library
[2715]	45	USE lib_mpp ! MPP library
[3680]	46	USE restart ! restart
[3294]	47	USE wrk_nemo ! Memory allocation
	48	USE timing ! Timing
[2715]	49
[3]	50	IMPLICIT NONE
	51	PRIVATE
	52
[508]	53	PUBLIC istate_init ! routine called by step.F90
[3]	54
	55	!! * Substitutions
	56	# include "domzgr_substitute.h90"
	57	# include "vectopt_loop_substitute.h90"
	58	!!----------------------------------------------------------------------
[4990]	59	!! NEMO/OPA 3.7 , NEMO Consortium (2014)
[888]	60	!! $Id$
[2715]	61	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[3]	62	!!----------------------------------------------------------------------
	63	CONTAINS
	64
	65	SUBROUTINE istate_init
	66	!!----------------------------------------------------------------------
	67	!! * ROUTINE istate_init *
	68	!!
[508]	69	!! ** Purpose : Initialization of the dynamics and tracer fields.
[3]	70	!!----------------------------------------------------------------------
[5163]	71	INTEGER :: ji, jj, jk ! dummy loop indices
	72	REAL(wp), POINTER, DIMENSION(:,:,:,:) :: zuvd ! U & V data workspace
[3294]	73	!!----------------------------------------------------------------------
	74	!
[4990]	75	IF( nn_timing == 1 ) CALL timing_start('istate_init')
[3294]	76	!
[3]	77
[4990]	78	IF(lwp) WRITE(numout,*) ' '
[508]	79	IF(lwp) WRITE(numout,*) 'istate_ini : Initialization of the dynamics and tracers'
	80	IF(lwp) WRITE(numout,*) '~~~~~~~~~~'
[3]	81
[3294]	82	CALL dta_tsd_init ! Initialisation of T & S input data
[4245]	83	IF( lk_c1d ) CALL dta_uvd_init ! Initialization of U & V input data
[3]	84
[5163]	85	rhd (:,:,: ) = 0._wp ; rhop (:,:,: ) = 0._wp ! set one for all to 0 at level jpk
	86	rn2b (:,:,: ) = 0._wp ; rn2 (:,:,: ) = 0._wp ! set one for all to 0 at levels 1 and jpk
	87	tsa (:,:,:,:) = 0._wp ! set one for all to 0 at level jpk
	88	rab_b(:,:,:,:) = 0._wp ; rab_n(:,:,:,:) = 0._wp ! set one for all to 0 at level jpk
[3294]	89
[15]	90	IF( ln_rstart ) THEN ! Restart from a file
[3]	91	! ! -------------------
	92	CALL rst_read ! Read the restart file
[1130]	93	CALL day_init ! model calendar (using both namelist and restart infos)
[3]	94	ELSE
	95	! ! Start from rest
	96	! ! ---------------
[1130]	97	numror = 0 ! define numror = 0 -> no restart file to read
[3]	98	neuler = 0 ! Set time-step indicator at nit000 (euler forward)
[1130]	99	CALL day_init ! model calendar (using both namelist and restart infos)
[508]	100	! ! Initialization of ocean to zero
[3294]	101	! before fields ! now fields
	102	sshb (:,:) = 0._wp ; sshn (:,:) = 0._wp
	103	ub (:,:,:) = 0._wp ; un (:,:,:) = 0._wp
	104	vb (:,:,:) = 0._wp ; vn (:,:,:) = 0._wp
	105	rotb (:,:,:) = 0._wp ; rotn (:,:,:) = 0._wp
	106	hdivb(:,:,:) = 0._wp ; hdivn(:,:,:) = 0._wp
[508]	107	!
[3]	108	IF( cp_cfg == 'eel' ) THEN
[2104]	109	CALL istate_eel ! EEL configuration : start from pre-defined U,V T-S fields
[434]	110	ELSEIF( cp_cfg == 'gyre' ) THEN
[2104]	111	CALL istate_gyre ! GYRE configuration : start from pre-defined T-S fields
[4245]	112	ELSE ! Initial T-S, U-V fields read in files
	113	IF ( ln_tsd_init ) THEN ! read 3D T and S data at nit000
	114	CALL dta_tsd( nit000, tsb )
	115	tsn(:,:,:,:) = tsb(:,:,:,:)
	116	!
	117	ELSE ! Initial T-S fields defined analytically
	118	CALL istate_t_s
	119	ENDIF
	120	IF ( ln_uvd_init .AND. lk_c1d ) THEN ! read 3D U and V data at nit000
	121	CALL wrk_alloc( jpi, jpj, jpk, 2, zuvd )
	122	CALL dta_uvd( nit000, zuvd )
	123	ub(:,:,:) = zuvd(:,:,:,1) ; un(:,:,:) = ub(:,:,:)
	124	vb(:,:,:) = zuvd(:,:,:,2) ; vn(:,:,:) = vb(:,:,:)
	125	CALL wrk_dealloc( jpi, jpj, jpk, 2, zuvd )
	126	ENDIF
[3]	127	ENDIF
[2104]	128	!
[4313]	129	CALL eos( tsb, rhd, rhop, gdept_0(:,:,:) ) ! before potential and in situ densities
[2236]	130	#if ! defined key_c1d
[5120]	131	IF( ln_zps .AND. .NOT. ln_isfcav) &
	132	& CALL zps_hde ( nit000, jpts, tsb, gtsu, gtsv, & ! Partial steps: before horizontal gradient
	133	& rhd, gru , grv ) ! of t, s, rd at the last ocean level
	134	IF( ln_zps .AND. ln_isfcav) &
	135	& CALL zps_hde_isf( nit000, jpts, tsb, gtsu, gtsv, & ! Partial steps for top cell (ISF)
	136	& rhd, gru , grv , aru , arv , gzu , gzv , ge3ru , ge3rv , &
	137	& gtui, gtvi, grui, grvi, arui, arvi, gzui, gzvi, ge3rui, ge3rvi ) ! of t, s, rd at the last ocean level
[2236]	138	#endif
[2148]	139	!
	140	! - ML - sshn could be modified by istate_eel, so that initialization of fse3t_b is done here
	141	IF( lk_vvl ) THEN
	142	DO jk = 1, jpk
	143	fse3t_b(:,:,jk) = fse3t_n(:,:,jk)
	144	ENDDO
	145	ENDIF
	146	!
[3]	147	ENDIF
[1438]	148	!
[2104]	149	IF( lk_agrif ) THEN ! read free surface arrays in restart file
[593]	150	IF( ln_rstart ) THEN
[3764]	151	IF( lk_dynspg_flt ) THEN ! read or initialize the following fields
	152	! ! gcx, gcxb for agrif_opa_init
	153	IF( sol_oce_alloc() > 0 ) CALL ctl_stop('agrif sol_oce_alloc: allocation of arrays failed')
	154	CALL flt_rst( nit000, 'READ' )
	155	ENDIF
	156	ENDIF ! explicit case not coded yet with AGRIF
[1200]	157	ENDIF
[508]	158	!
[4354]	159	!
	160	! Initialize "now" and "before" barotropic velocities:
	161	! Do it whatever the free surface method, these arrays
	162	! being eventually used
	163	!
	164	!
	165	un_b(:,:) = 0._wp ; vn_b(:,:) = 0._wp
	166	ub_b(:,:) = 0._wp ; vb_b(:,:) = 0._wp
	167	!
	168	DO jk = 1, jpkm1
	169	DO jj = 1, jpj
	170	DO ji = 1, jpi
	171	un_b(ji,jj) = un_b(ji,jj) + fse3u_n(ji,jj,jk) * un(ji,jj,jk) * umask(ji,jj,jk)
	172	vn_b(ji,jj) = vn_b(ji,jj) + fse3v_n(ji,jj,jk) * vn(ji,jj,jk) * vmask(ji,jj,jk)
	173	!
[4370]	174	ub_b(ji,jj) = ub_b(ji,jj) + fse3u_b(ji,jj,jk) * ub(ji,jj,jk) * umask(ji,jj,jk)
	175	vb_b(ji,jj) = vb_b(ji,jj) + fse3v_b(ji,jj,jk) * vb(ji,jj,jk) * vmask(ji,jj,jk)
[4354]	176	END DO
	177	END DO
	178	END DO
	179	!
[4370]	180	un_b(:,:) = un_b(:,:) * hur (:,:)
	181	vn_b(:,:) = vn_b(:,:) * hvr (:,:)
[4354]	182	!
[4370]	183	ub_b(:,:) = ub_b(:,:) * hur_b(:,:)
	184	vb_b(:,:) = vb_b(:,:) * hvr_b(:,:)
[4354]	185	!
	186	!
[4990]	187	IF( nn_timing == 1 ) CALL timing_stop('istate_init')
[3294]	188	!
[3]	189	END SUBROUTINE istate_init
	190
[4990]	191
[3294]	192	SUBROUTINE istate_t_s
[3]	193	!!---------------------------------------------------------------------
[3294]	194	!! * ROUTINE istate_t_s *
[3]	195	!!
	196	!! ** Purpose : Intialization of the temperature field with an
	197	!! analytical profile or a file (i.e. in EEL configuration)
	198	!!
[3294]	199	!! ** Method : - temperature: use Philander analytic profile
	200	!! - salinity : use to a constant value 35.5
[3]	201	!!
	202	!! References : Philander ???
	203	!!----------------------------------------------------------------------
[3294]	204	INTEGER :: ji, jj, jk
	205	REAL(wp) :: zsal = 35.50
[3]	206	!!----------------------------------------------------------------------
[508]	207	!
[3]	208	IF(lwp) WRITE(numout,*)
[3294]	209	IF(lwp) WRITE(numout,*) 'istate_t_s : Philander s initial temperature profile'
	210	IF(lwp) WRITE(numout,*) '~~~~~~~~~~ and constant salinity (',zsal,' psu)'
[2104]	211	!
[3]	212	DO jk = 1, jpk
[3294]	213	tsn(:,:,jk,jp_tem) = ( ( ( 7.5 - 0. * ABS( gphit(:,:) )/30. ) * ( 1.-TANH((fsdept(:,:,jk)-80.)/30.) ) &
	214	& + 10. * ( 5000. - fsdept(:,:,jk) ) /5000.) ) * tmask(:,:,jk)
	215	tsb(:,:,jk,jp_tem) = tsn(:,:,jk,jp_tem)
[3]	216	END DO
[3294]	217	tsn(:,:,:,jp_sal) = zsal * tmask(:,:,:)
	218	tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal)
[2104]	219	!
[3294]	220	END SUBROUTINE istate_t_s
[3]	221
[4990]	222
[3]	223	SUBROUTINE istate_eel
	224	!!----------------------------------------------------------------------
	225	!! * ROUTINE istate_eel *
	226	!!
	227	!! ** Purpose : Initialization of the dynamics and tracers for EEL R5
	228	!! configuration (channel with or without a topographic bump)
	229	!!
	230	!! ** Method : - set temprature field
	231	!! - set salinity field
	232	!! - set velocity field including horizontal divergence
	233	!! and relative vorticity fields
	234	!!----------------------------------------------------------------------
	235	USE divcur ! hor. divergence & rel. vorticity (div_cur routine)
[473]	236	USE iom
[4990]	237	!
[3]	238	INTEGER :: inum ! temporary logical unit
	239	INTEGER :: ji, jj, jk ! dummy loop indices
[479]	240	INTEGER :: ijloc
[508]	241	REAL(wp) :: zh1, zh2, zslope, zcst, zfcor ! temporary scalars
[2104]	242	REAL(wp) :: zt1 = 15._wp ! surface temperature value (EEL R5)
	243	REAL(wp) :: zt2 = 5._wp ! bottom temperature value (EEL R5)
	244	REAL(wp) :: zsal = 35.0_wp ! constant salinity (EEL R2, R5 and R6)
	245	REAL(wp) :: zueel = 0.1_wp ! constant uniform zonal velocity (EEL R5)
[508]	246	REAL(wp), DIMENSION(jpiglo,jpjglo) :: zssh ! initial ssh over the global domain
[3]	247	!!----------------------------------------------------------------------
[4990]	248	!
[3]	249	SELECT CASE ( jp_cfg )
	250	! ! ====================
	251	CASE ( 5 ) ! EEL R5 configuration
	252	! ! ====================
[2104]	253	!
[3]	254	! set temperature field with a linear profile
	255	! -------------------------------------------
	256	IF(lwp) WRITE(numout,*)
	257	IF(lwp) WRITE(numout,*) 'istate_eel : EEL R5: linear temperature profile'
	258	IF(lwp) WRITE(numout,*) '~~~~~~~~~~'
[2104]	259	!
[4292]	260	zh1 = gdept_1d( 1 )
	261	zh2 = gdept_1d(jpkm1)
[2104]	262	!
[3]	263	zslope = ( zt1 - zt2 ) / ( zh1 - zh2 )
	264	zcst = ( zt1 * ( zh1 - zh2) - ( zt1 - zt2 ) * zh1 ) / ( zh1 - zh2 )
[2104]	265	!
[3]	266	DO jk = 1, jpk
[3294]	267	tsn(:,:,jk,jp_tem) = ( zt2 + zt1 * exp( - fsdept(:,:,jk) / 1000 ) ) * tmask(:,:,jk)
	268	tsb(:,:,jk,jp_tem) = tsn(:,:,jk,jp_tem)
[3]	269	END DO
[2104]	270	!
[3294]	271	IF(lwp) CALL prizre( tsn(:,:,:,jp_tem), jpi , jpj , jpk , jpj/2 , &
	272	& 1 , jpi , 5 , 1 , jpk , &
	273	& 1 , 1. , numout )
[2104]	274	!
[3]	275	! set salinity field to a constant value
	276	! --------------------------------------
	277	IF(lwp) WRITE(numout,*)
	278	IF(lwp) WRITE(numout,*) 'istate_eel : EEL R5: constant salinity field, S = ', zsal
	279	IF(lwp) WRITE(numout,*) '~~~~~~~~~~'
[2104]	280	!
[3294]	281	tsn(:,:,:,jp_sal) = zsal * tmask(:,:,:)
	282	tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal)
[2104]	283	!
[3]	284	! set the dynamics: U,V, hdiv, rot (and ssh if necessary)
	285	! ----------------
	286	! Start EEL5 configuration with barotropic geostrophic velocities
	287	! according the sshb and sshn SSH imposed.
[479]	288	! we assume a uniform grid (hence the use of e1t(1,1) for delta_y)
	289	! we use the Coriolis frequency at mid-channel.
	290	ub(:,:,:) = zueel * umask(:,:,:)
[3]	291	un(:,:,:) = ub(:,:,:)
[479]	292	ijloc = mj0(INT(jpjglo-1)/2)
	293	zfcor = ff(1,ijloc)
[2104]	294	!
[3]	295	DO jj = 1, jpjglo
[479]	296	zssh(:,jj) = - (FLOAT(jj)- FLOAT(jpjglo-1)/2.)zueele1t(1,1)*zfcor/grav
[3]	297	END DO
[2104]	298	!
[479]	299	IF(lwp) THEN
	300	WRITE(numout,*) ' Uniform zonal velocity for EEL R5:',zueel
	301	WRITE(numout,*) ' Geostrophic SSH profile as a function of y:'
	302	WRITE(numout,'(12(1x,f6.2))') zssh(1,:)
	303	ENDIF
[2104]	304	!
[3]	305	DO jj = 1, nlcj
	306	DO ji = 1, nlci
	307	sshb(ji,jj) = zssh( mig(ji) , mjg(jj) ) * tmask(ji,jj,1)
	308	END DO
	309	END DO
	310	sshb(nlci+1:jpi, : ) = 0.e0 ! set to zero extra mpp columns
	311	sshb( : ,nlcj+1:jpj) = 0.e0 ! set to zero extra mpp rows
[2104]	312	!
[3]	313	sshn(:,:) = sshb(:,:) ! set now ssh to the before value
[2104]	314	!
[593]	315	IF( nn_rstssh /= 0 ) THEN
[2104]	316	nn_rstssh = 0 ! hand-made initilization of ssh
[593]	317	CALL ctl_warn( 'istate_eel: force nn_rstssh = 0' )
[558]	318	ENDIF
[2104]	319	!
	320	CALL div_cur( nit000 ) ! horizontal divergence and relative vorticity (curl)
[3]	321	! N.B. the vertical velocity will be computed from the horizontal divergence field
	322	! in istate by a call to wzv routine
	323
	324
	325	! ! ==========================
	326	CASE ( 2 , 6 ) ! EEL R2 or R6 configuration
	327	! ! ==========================
[2104]	328	!
[3]	329	! set temperature field with a NetCDF file
	330	! ----------------------------------------
	331	IF(lwp) WRITE(numout,*)
	332	IF(lwp) WRITE(numout,*) 'istate_eel : EEL R2 or R6: read initial temperature in a NetCDF file'
	333	IF(lwp) WRITE(numout,*) '~~~~~~~~~~'
[2104]	334	!
[473]	335	CALL iom_open ( 'eel.initemp', inum )
[3294]	336	CALL iom_get ( inum, jpdom_data, 'initemp', tsb(:,:,:,jp_tem) ) ! read before temprature (tb)
[473]	337	CALL iom_close( inum )
[2104]	338	!
[3294]	339	tsn(:,:,:,jp_tem) = tsb(:,:,:,jp_tem) ! set nox temperature to tb
[2104]	340	!
[3294]	341	IF(lwp) CALL prizre( tsn(:,:,:,jp_tem), jpi , jpj , jpk , jpj/2 , &
	342	& 1 , jpi , 5 , 1 , jpk , &
	343	& 1 , 1. , numout )
[2104]	344	!
[3]	345	! set salinity field to a constant value
	346	! --------------------------------------
	347	IF(lwp) WRITE(numout,*)
	348	IF(lwp) WRITE(numout,*) 'istate_eel : EEL R5: constant salinity field, S = ', zsal
	349	IF(lwp) WRITE(numout,*) '~~~~~~~~~~'
[2104]	350	!
[3294]	351	tsn(:,:,:,jp_sal) = zsal * tmask(:,:,:)
	352	tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal)
[2104]	353	!
[3]	354	! ! ===========================
	355	CASE DEFAULT ! NONE existing configuration
	356	! ! ===========================
[473]	357	WRITE(ctmp1,*) 'EEL with a ', jp_cfg,' km resolution is not coded'
	358	CALL ctl_stop( ctmp1 )
[2104]	359	!
[3]	360	END SELECT
[2104]	361	!
[3]	362	END SUBROUTINE istate_eel
	363
	364
[93]	365	SUBROUTINE istate_gyre
	366	!!----------------------------------------------------------------------
	367	!! * ROUTINE istate_gyre *
	368	!!
	369	!! ** Purpose : Initialization of the dynamics and tracers for GYRE
	370	!! configuration (double gyre with rotated domain)
	371	!!
	372	!! ** Method : - set temprature field
	373	!! - set salinity field
	374	!!----------------------------------------------------------------------
[473]	375	INTEGER :: ji, jj, jk ! dummy loop indices
[508]	376	INTEGER :: inum ! temporary logical unit
	377	INTEGER, PARAMETER :: ntsinit = 0 ! (0/1) (analytical/input data files) T&S initialization
[93]	378	!!----------------------------------------------------------------------
[4990]	379	!
[434]	380	SELECT CASE ( ntsinit)
[4990]	381	!
[434]	382	CASE ( 0 ) ! analytical T/S profil deduced from LEVITUS
	383	IF(lwp) WRITE(numout,*)
	384	IF(lwp) WRITE(numout,*) 'istate_gyre : initial analytical T and S profil deduced from LEVITUS '
	385	IF(lwp) WRITE(numout,*) '~~~~~~~~~~~'
[4990]	386	!
[434]	387	DO jk = 1, jpk
	388	DO jj = 1, jpj
	389	DO ji = 1, jpi
[3294]	390	tsn(ji,jj,jk,jp_tem) = ( 16. - 12. * TANH( (fsdept(ji,jj,jk) - 400) / 700 ) ) &
[434]	391	& * (-TANH( (500-fsdept(ji,jj,jk)) / 150 ) + 1) / 2 &
	392	& + ( 15. * ( 1. - TANH( (fsdept(ji,jj,jk)-50.) / 1500.) ) &
	393	& - 1.4 * TANH((fsdept(ji,jj,jk)-100.) / 100.) &
	394	& + 7. * (1500. - fsdept(ji,jj,jk)) / 1500. ) &
	395	& * (-TANH( (fsdept(ji,jj,jk) - 500) / 150) + 1) / 2
[3294]	396	tsn(ji,jj,jk,jp_tem) = tsn(ji,jj,jk,jp_tem) * tmask(ji,jj,jk)
	397	tsb(ji,jj,jk,jp_tem) = tsn(ji,jj,jk,jp_tem)
[434]	398
[3294]	399	tsn(ji,jj,jk,jp_sal) = ( 36.25 - 1.13 * TANH( (fsdept(ji,jj,jk) - 305) / 460 ) ) &
[434]	400	& * (-TANH((500 - fsdept(ji,jj,jk)) / 150) + 1) / 2 &
	401	& + ( 35.55 + 1.25 * (5000. - fsdept(ji,jj,jk)) / 5000. &
	402	& - 1.62 * TANH( (fsdept(ji,jj,jk) - 60. ) / 650. ) &
	403	& + 0.2 * TANH( (fsdept(ji,jj,jk) - 35. ) / 100. ) &
	404	& + 0.2 * TANH( (fsdept(ji,jj,jk) - 1000.) / 5000.) ) &
	405	& * (-TANH((fsdept(ji,jj,jk) - 500) / 150) + 1) / 2
[3294]	406	tsn(ji,jj,jk,jp_sal) = tsn(ji,jj,jk,jp_sal) * tmask(ji,jj,jk)
	407	tsb(ji,jj,jk,jp_sal) = tsn(ji,jj,jk,jp_sal)
[434]	408	END DO
[93]	409	END DO
	410	END DO
[4990]	411	!
[434]	412	CASE ( 1 ) ! T/S data fields read in dta_tem.nc/data_sal.nc files
	413	IF(lwp) WRITE(numout,*)
	414	IF(lwp) WRITE(numout,*) 'istate_gyre : initial T and S read from dta_tem.nc/data_sal.nc files'
	415	IF(lwp) WRITE(numout,*) '~~~~~~~~~~~'
	416	IF(lwp) WRITE(numout,*) ' NetCDF FORMAT'
	417
	418	! Read temperature field
	419	! ----------------------
[473]	420	CALL iom_open ( 'data_tem', inum )
[3294]	421	CALL iom_get ( inum, jpdom_data, 'votemper', tsn(:,:,:,jp_tem) )
[473]	422	CALL iom_close( inum )
[434]	423
[3294]	424	tsn(:,:,:,jp_tem) = tsn(:,:,:,jp_tem) * tmask(:,:,:)
	425	tsb(:,:,:,jp_tem) = tsn(:,:,:,jp_tem)
[434]	426
	427	! Read salinity field
	428	! -------------------
[473]	429	CALL iom_open ( 'data_sal', inum )
[3294]	430	CALL iom_get ( inum, jpdom_data, 'vosaline', tsn(:,:,:,jp_sal) )
[473]	431	CALL iom_close( inum )
[434]	432
[3294]	433	tsn(:,:,:,jp_sal) = tsn(:,:,:,jp_sal) * tmask(:,:,:)
	434	tsb(:,:,:,jp_sal) = tsn(:,:,:,jp_sal)
[4990]	435	!
[434]	436	END SELECT
[4990]	437	!
[93]	438	IF(lwp) THEN
	439	WRITE(numout,*)
	440	WRITE(numout,*) ' Initial temperature and salinity profiles:'
[4292]	441	WRITE(numout, "(9x,' level gdept_1d temperature salinity ')" )
	442	WRITE(numout, "(10x, i4, 3f10.2)" ) ( jk, gdept_1d(jk), tsn(2,2,jk,jp_tem), tsn(2,2,jk,jp_sal), jk = 1, jpk )
[93]	443	ENDIF
[4990]	444	!
[93]	445	END SUBROUTINE istate_gyre
	446
[4990]	447
[3]	448	SUBROUTINE istate_uvg
	449	!!----------------------------------------------------------------------
	450	!! * ROUTINE istate_uvg *
	451	!!
	452	!! ** Purpose : Compute the geostrophic velocities from (tn,sn) fields
	453	!!
	454	!! ** Method : Using the hydrostatic hypothesis the now hydrostatic
	455	!! pressure is computed by integrating the in-situ density from the
	456	!! surface to the bottom.
	457	!! p=integral [ rau*g dz ]
	458	!!----------------------------------------------------------------------
[359]	459	USE dynspg ! surface pressure gradient (dyn_spg routine)
[3]	460	USE divcur ! hor. divergence & rel. vorticity (div_cur routine)
	461	USE lbclnk ! ocean lateral boundary condition (or mpp link)
[4990]	462	!
[3]	463	INTEGER :: ji, jj, jk ! dummy loop indices
	464	INTEGER :: indic ! ???
[508]	465	REAL(wp) :: zmsv, zphv, zmsu, zphu, zalfg ! temporary scalars
[3294]	466	REAL(wp), POINTER, DIMENSION(:,:,:) :: zprn
[3]	467	!!----------------------------------------------------------------------
[3294]	468	!
	469	CALL wrk_alloc( jpi, jpj, jpk, zprn)
	470	!
[3]	471	IF(lwp) WRITE(numout,*)
	472	IF(lwp) WRITE(numout,*) 'istate_uvg : Start from Geostrophy'
	473	IF(lwp) WRITE(numout,*) '~~~~~~~~~~'
	474
	475	! Compute the now hydrostatic pressure
	476	! ------------------------------------
	477
[15]	478	zalfg = 0.5 * grav * rau0
[508]	479
	480	zprn(:,:,1) = zalfg * fse3w(:,:,1) * ( 1 + rhd(:,:,1) ) ! Surface value
[3]	481
[508]	482	DO jk = 2, jpkm1 ! Vertical integration from the surface
[3]	483	zprn(:,:,jk) = zprn(:,:,jk-1) &
[359]	484	& + zalfg * fse3w(:,:,jk) * ( 2. + rhd(:,:,jk) + rhd(:,:,jk-1) )
[3]	485	END DO
	486
	487	! Compute geostrophic balance
	488	! ---------------------------
	489	DO jk = 1, jpkm1
	490	DO jj = 2, jpjm1
	491	DO ji = fs_2, fs_jpim1 ! vertor opt.
	492	zmsv = 1. / MAX( umask(ji-1,jj+1,jk) + umask(ji ,jj+1,jk) &
	493	+ umask(ji-1,jj ,jk) + umask(ji ,jj ,jk) , 1. )
	494	zphv = ( zprn(ji ,jj+1,jk) - zprn(ji-1,jj+1,jk) ) * umask(ji-1,jj+1,jk) / e1u(ji-1,jj+1) &
	495	+ ( zprn(ji+1,jj+1,jk) - zprn(ji ,jj+1,jk) ) * umask(ji ,jj+1,jk) / e1u(ji ,jj+1) &
	496	+ ( zprn(ji ,jj ,jk) - zprn(ji-1,jj ,jk) ) * umask(ji-1,jj ,jk) / e1u(ji-1,jj ) &
	497	+ ( zprn(ji+1,jj ,jk) - zprn(ji ,jj ,jk) ) * umask(ji ,jj ,jk) / e1u(ji ,jj )
	498	zphv = 1. / rau0 * zphv * zmsv * vmask(ji,jj,jk)
	499
	500	zmsu = 1. / MAX( vmask(ji+1,jj ,jk) + vmask(ji ,jj ,jk) &
	501	+ vmask(ji+1,jj-1,jk) + vmask(ji ,jj-1,jk) , 1. )
	502	zphu = ( zprn(ji+1,jj+1,jk) - zprn(ji+1,jj ,jk) ) * vmask(ji+1,jj ,jk) / e2v(ji+1,jj ) &
	503	+ ( zprn(ji ,jj+1,jk) - zprn(ji ,jj ,jk) ) * vmask(ji ,jj ,jk) / e2v(ji ,jj ) &
	504	+ ( zprn(ji+1,jj ,jk) - zprn(ji+1,jj-1,jk) ) * vmask(ji+1,jj-1,jk) / e2v(ji+1,jj-1) &
	505	+ ( zprn(ji ,jj ,jk) - zprn(ji ,jj-1,jk) ) * vmask(ji ,jj-1,jk) / e2v(ji ,jj-1)
	506	zphu = 1. / rau0 * zphu * zmsu * umask(ji,jj,jk)
	507
	508	! Compute the geostrophic velocities
	509	un(ji,jj,jk) = -2. * zphu / ( ff(ji,jj) + ff(ji ,jj-1) )
	510	vn(ji,jj,jk) = 2. * zphv / ( ff(ji,jj) + ff(ji-1,jj ) )
	511	END DO
	512	END DO
	513	END DO
	514
	515	IF(lwp) WRITE(numout,*) ' we force to zero bottom velocity'
	516
	517	! Susbtract the bottom velocity (level jpk-1 for flat bottom case)
	518	! to have a zero bottom velocity
	519
	520	DO jk = 1, jpkm1
	521	un(:,:,jk) = ( un(:,:,jk) - un(:,:,jpkm1) ) * umask(:,:,jk)
	522	vn(:,:,jk) = ( vn(:,:,jk) - vn(:,:,jpkm1) ) * vmask(:,:,jk)
	523	END DO
	524
	525	CALL lbc_lnk( un, 'U', -1. )
	526	CALL lbc_lnk( vn, 'V', -1. )
	527
	528	ub(:,:,:) = un(:,:,:)
	529	vb(:,:,:) = vn(:,:,:)
	530
	531	! WARNING !!!!!
	532	! after initializing u and v, we need to calculate the initial streamfunction bsf.
	533	! Otherwise, only the trend will be computed and the model will blow up (inconsistency).
	534	! to do that, we call dyn_spg with a special trick:
[508]	535	! we fill ua and va with the velocities divided by dt, and the streamfunction will be brought to the
	536	! right value assuming the velocities have been set up in one time step.
	537	! we then set bsfd to zero (first guess for next step is d(psi)/dt = 0.)
	538	! sets up s false trend to calculate the barotropic streamfunction.
[3]	539
	540	ua(:,:,:) = ub(:,:,:) / rdt
	541	va(:,:,:) = vb(:,:,:) / rdt
	542
[359]	543	! calls dyn_spg. we assume euler time step, starting from rest.
[3]	544	indic = 0
[359]	545	CALL dyn_spg( nit000, indic ) ! surface pressure gradient
[3]	546
	547	! the new velocity is ua*rdt
	548
	549	CALL lbc_lnk( ua, 'U', -1. )
	550	CALL lbc_lnk( va, 'V', -1. )
	551
	552	ub(:,:,:) = ua(:,:,:) * rdt
	553	vb(:,:,:) = va(:,:,:) * rdt
	554	ua(:,:,:) = 0.e0
	555	va(:,:,:) = 0.e0
	556	un(:,:,:) = ub(:,:,:)
	557	vn(:,:,:) = vb(:,:,:)
	558
	559	! Compute the divergence and curl
	560
	561	CALL div_cur( nit000 ) ! now horizontal divergence and curl
	562
	563	hdivb(:,:,:) = hdivn(:,:,:) ! set the before to the now value
	564	rotb (:,:,:) = rotn (:,:,:) ! set the before to the now value
[508]	565	!
[3294]	566	CALL wrk_dealloc( jpi, jpj, jpk, zprn)
[2715]	567	!
[3]	568	END SUBROUTINE istate_uvg
	569
	570	!!=====================================================================
	571	END MODULE istate

Note: See TracBrowser for help on using the repository browser.

Download in other formats: