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limthd_2.F90 in branches/2015/dev_r5204_CNRS_PISCES_dcy/NEMOGCM/NEMO/LIM_SRC_2 – NEMO

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source: branches/2015/dev_r5204_CNRS_PISCES_dcy/NEMOGCM/NEMO/LIM_SRC_2/limthd_2.F90 @ 5207

Last change on this file since 5207 was 5207, checked in by cetlod, 9 years ago
dev_r5204_CNRS_PISCES_dcy:minor bugs corrections
Property svn:keywords set to `Id`
File size: 35.8 KB

Line
1	MODULE limthd_2
2	!!======================================================================
3	!! * MODULE limthd_2 *
4	!! LIM thermo ice model : ice thermodynamic
5	!!======================================================================
6	!! History : 1.0 ! 2000-01 (LIM)
7	!! 2.0 ! 2002-07 (C. Ethe, G. Madec) F90
8	!! 2.0 ! 2003-08 (C. Ethe) add lim_thd_init
9	!! - ! 2008-2008 (A. Caubel, G. Madec, E. Maisonnave, S. Masson ) generic coupled interface
10	!!---------------------------------------------------------------------
11	#if defined key_lim2
12	!!----------------------------------------------------------------------
13	!! 'key_lim2' : LIM 2.0 sea-ice model
14	!!----------------------------------------------------------------------
15	!! lim_thd_2 : thermodynamic of sea ice
16	!! lim_thd_init_2 : initialisation of sea-ice thermodynamic
17	!!----------------------------------------------------------------------
18	USE phycst ! physical constants
19	USE dom_oce ! ocean space and time domain variables
20	USE domvvl
21	USE lbclnk
22	USE in_out_manager ! I/O manager
23	USE lib_mpp
24	USE wrk_nemo ! work arrays
25	USE iom ! IOM library
26	USE ice_2 ! LIM sea-ice variables
27	USE sbc_oce !
28	USE sbc_ice !
29	USE thd_ice_2 ! LIM thermodynamic sea-ice variables
30	USE dom_ice_2 ! LIM sea-ice domain
31	USE limthd_zdf_2
32	USE limthd_lac_2
33	USE limtab_2
34	USE prtctl ! Print control
35	USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined)
36
37	IMPLICIT NONE
38	PRIVATE
39
40	PUBLIC lim_thd_2 ! called by lim_step
41
42	REAL(wp) :: epsi20 = 1.e-20 ! constant values
43	REAL(wp) :: epsi16 = 1.e-16 !
44	REAL(wp) :: epsi04 = 1.e-04 !
45	REAL(wp) :: rzero = 0.e0 !
46	REAL(wp) :: rone = 1.e0 !
47
48	!! * Substitutions
49	# include "domzgr_substitute.h90"
50	# include "vectopt_loop_substitute.h90"
51	!!-------- -------------------------------------------------------------
52	!! NEMO/LIM2 3.3 , UCL - NEMO Consortium (2010)
53	!! $Id$
54	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
55	!!----------------------------------------------------------------------
56	CONTAINS
57
58	SUBROUTINE lim_thd_2( kt )
59	!!-------------------------------------------------------------------
60	!! * ROUTINE lim_thd_2 *
61	!!
62	!! ** Purpose : This routine manages the ice thermodynamic.
63	!!
64	!! ** Action : - Initialisation of some variables
65	!! - Some preliminary computation (oceanic heat flux
66	!! at the ice base, snow acc.,heat budget of the leads)
67	!! - selection of the icy points and put them in an array
68	!! - call lim_vert_ther for vert ice thermodynamic
69	!! - back to the geographic grid
70	!! - selection of points for lateral accretion
71	!! - call lim_lat_acc for the ice accretion
72	!! - back to the geographic grid
73	!!
74	!! References : Goosse et al. 1996, Bul. Soc. Roy. Sc. Liege, 65, 87-90
75	!!---------------------------------------------------------------------
76	INTEGER, INTENT(in) :: kt ! number of iteration
77	!!
78	INTEGER :: ji, jj ! dummy loop indices
79	INTEGER :: nbpb ! nb of icy pts for thermo. cal.
80	INTEGER :: nbpac ! nb of pts for lateral accretion
81	CHARACTER (len=22) :: charout
82	REAL(wp) :: zfric_umin = 5e-03 ! lower bound for the friction velocity
83	REAL(wp) :: zfric_umax = 2e-02 ! upper bound for the friction velocity
84	REAL(wp) :: zinda ! switch for test. the val. of concen.
85	REAL(wp) :: zindb, zindg ! switches for test. the val of arg
86	REAL(wp) :: zfricp ! temporary scalar
87	REAL(wp) :: za , zh, zthsnice !
88	REAL(wp) :: zfric_u ! friction velocity
89	REAL(wp) :: zfntlat, zpareff ! test. the val. of lead heat budget
90
91	REAL(wp) :: zuice_m, zvice_m ! Sea-ice velocities at U & V-points
92	REAL(wp) :: zhice_u, zhice_v ! Sea-ice volume at U & V-points
93	REAL(wp) :: ztr_fram ! Sea-ice transport through Fram strait
94	REAL(wp) :: zrhoij, zrhoijm1 ! temporary scalars
95	REAL(wp) :: zztmp ! temporary scalars within a loop
96	REAL(wp), POINTER, DIMENSION(:,:) :: ztmp ! 2D workspace
97	REAL(wp), POINTER, DIMENSION(:,:) :: zqlbsbq ! link with lead energy budget qldif
98	REAL(wp), POINTER, DIMENSION(:,:) :: zlicegr ! link with lateral ice growth
99	!!$ REAL(wp), DIMENSION(:,:) :: firic ! IR flux over the ice (outputs only)
100	!!$ REAL(wp), DIMENSION(:,:) :: fcsic ! Sensible heat flux over the ice (outputs only)
101	!!$ REAL(wp), DIMENSION(:,:) :: fleic ! Latent heat flux over the ice (outputs only)
102	!!$ REAL(wp), DIMENSION(:,:) :: qlatic ! latent flux (outputs only)
103	REAL(wp), POINTER, DIMENSION(:,:) :: zdvosif ! Variation of volume at surface (outputs only)
104	REAL(wp), POINTER, DIMENSION(:,:) :: zdvobif ! Variation of ice volume at the bottom ice (outputs only)
105	REAL(wp), POINTER, DIMENSION(:,:) :: zdvolif ! Total variation of ice volume (outputs only)
106	REAL(wp), POINTER, DIMENSION(:,:) :: zdvonif ! Surface accretion Snow to Ice transformation (outputs only)
107	REAL(wp), POINTER, DIMENSION(:,:) :: zdvomif ! Bottom variation of ice volume due to melting (outputs only)
108	REAL(wp), POINTER, DIMENSION(:,:) :: zu_imasstr ! Sea-ice transport along i-axis at U-point (outputs only)
109	REAL(wp), POINTER, DIMENSION(:,:) :: zv_imasstr ! Sea-ice transport along j-axis at V-point (outputs only)
110	REAL(wp), POINTER, DIMENSION(:,:,:) :: zmsk ! 3D workspace
111	!!-------------------------------------------------------------------
112
113	CALL wrk_alloc( jpi, jpj, ztmp, zqlbsbq, zlicegr, zdvosif, zdvobif, zdvolif, zdvonif, zdvomif, zu_imasstr, zv_imasstr )
114	CALL wrk_alloc( jpi, jpj, jpk, zmsk )
115
116	IF( kt == nit000 ) THEN
117	CALL lim_thd_init_2 ! Initialization (first time-step only)
118	IF( l_trcdm2dc ) ALLOCATE( fstric_mean(jpi,jpj), fstbif_mean_1d(jpij), qsr_ice_mean_1d(jpij) )
119	ENDIF
120
121	!-------------------------------------------!
122	! Initilization of diagnostic variables !
123	!-------------------------------------------!
124
125	!!gm needed? yes at least for some of these arrays
126	zdvosif(:,:) = 0.e0 ! variation of ice volume at surface
127	zdvobif(:,:) = 0.e0 ! variation of ice volume at bottom
128	zdvolif(:,:) = 0.e0 ! total variation of ice volume
129	zdvonif(:,:) = 0.e0 ! transformation of snow to sea-ice volume
130	zlicegr(:,:) = 0.e0 ! lateral variation of ice volume
131	zdvomif(:,:) = 0.e0 ! variation of ice volume at bottom due to melting only
132	ztr_fram = 0.e0 ! sea-ice transport through Fram strait
133	fstric (:,:) = 0.e0 ! part of solar radiation absorbing inside the ice
134	fscmbq (:,:) = 0.e0 ! linked with fstric
135	ffltbif(:,:) = 0.e0 ! linked with fstric
136	qfvbq (:,:) = 0.e0 ! linked with fstric
137	rdm_snw(:,:) = 0.e0 ! variation of snow mass over 1 time step
138	rdq_snw(:,:) = 0.e0 ! heat content associated with rdm_snw
139	rdm_ice(:,:) = 0.e0 ! variation of ice mass over 1 time step
140	rdq_ice(:,:) = 0.e0 ! heat content associated with rdm_ice
141	zmsk (:,:,:) = 0.e0
142	!
143	IF( l_trcdm2dc ) fstric_mean(:,:) = 0.e0 ! part of solar radiation absorbing inside the ice
144
145	! set to zero snow thickness smaller than epsi04
146	DO jj = 1, jpj
147	DO ji = 1, jpi
148	hsnif(ji,jj) = hsnif(ji,jj) * MAX( rzero, SIGN( rone , hsnif(ji,jj) - epsi04 ) )
149	END DO
150	END DO
151	!!gm better coded (do not use SIGN...)
152	! WHERE( hsnif(:,:) < epsi04 ) hsnif(:,:) = 0.e0
153	!!gm
154
155	IF(ln_ctl) CALL prt_ctl( tab2d_1=hsnif, clinfo1=' lim_thd: hsnif : ' )
156
157	!-----------------------------------!
158	! Treatment of particular cases !
159	!-----------------------------------!
160
161	DO jj = 1, jpj
162	DO ji = 1, jpi
163	! snow is transformed into ice if the original ice cover disappears.
164	zindg = tms(ji,jj) * MAX( rzero , SIGN( rone , -hicif(ji,jj) ) )
165	hicif(ji,jj) = hicif(ji,jj) + zindg * rhosn * hsnif(ji,jj) / rau0
166	hsnif(ji,jj) = ( rone - zindg ) * hsnif(ji,jj) + zindg * hicif(ji,jj) * ( rau0 - rhoic ) / rhosn
167	dmgwi(ji,jj) = zindg * (1.0 - frld(ji,jj)) * rhoic * hicif(ji,jj) ! snow/ice mass
168
169	! the lead fraction, frld, must be little than or equal to amax (ice ridging).
170	zthsnice = hsnif(ji,jj) + hicif(ji,jj)
171	zindb = tms(ji,jj) * ( 1.0 - MAX( rzero , SIGN( rone , - zthsnice ) ) )
172	za = zindb * MIN( rone, ( 1.0 - frld(ji,jj) ) * uscomi )
173	hsnif (ji,jj) = hsnif(ji,jj) * za
174	hicif (ji,jj) = hicif(ji,jj) * za
175	qstoif(ji,jj) = qstoif(ji,jj) * za
176	frld (ji,jj) = 1.0 - zindb * ( 1.0 - frld(ji,jj) ) / MAX( za, epsi20 )
177
178	! the in situ ice thickness, hicif, must be equal to or greater than hiclim.
179	zh = MAX( rone , zindb * hiclim / MAX( hicif(ji,jj), epsi20 ) )
180	hsnif (ji,jj) = hsnif(ji,jj) * zh
181	hicif (ji,jj) = hicif(ji,jj) * zh
182	qstoif(ji,jj) = qstoif(ji,jj) * zh
183	frld (ji,jj) = ( frld(ji,jj) + ( zh - 1.0 ) ) / zh
184	END DO
185	END DO
186
187	IF(ln_ctl) THEN
188	CALL prt_ctl( tab2d_1=hicif , clinfo1=' lim_thd: hicif : ' )
189	CALL prt_ctl( tab2d_1=hsnif , clinfo1=' lim_thd: hsnif : ' )
190	CALL prt_ctl( tab2d_1=dmgwi , clinfo1=' lim_thd: dmgwi : ' )
191	CALL prt_ctl( tab2d_1=qstoif, clinfo1=' lim_thd: qstoif : ' )
192	CALL prt_ctl( tab2d_1=frld , clinfo1=' lim_thd: frld : ' )
193	ENDIF
194
195
196	!-------------------------------!
197	! Thermodynamics of sea ice !
198	!-------------------------------!
199
200	! Partial computation of forcing for the thermodynamic sea ice model.
201	!--------------------------------------------------------------------------
202
203	!CDIR NOVERRCHK
204	DO jj = 1, jpj
205	!CDIR NOVERRCHK
206	DO ji = 1, jpi
207	zthsnice = hsnif(ji,jj) + hicif(ji,jj)
208	zindb = tms(ji,jj) * ( 1.0 - MAX( rzero , SIGN( rone , - zthsnice ) ) )
209	pfrld(ji,jj) = frld(ji,jj)
210	zfricp = 1.0 - frld(ji,jj)
211	zinda = 1.0 - MAX( rzero , SIGN( rone , - zfricp ) )
212
213	! solar irradiance transmission at the mixed layer bottom and used in the lead heat budget
214	thcm(ji,jj) = 0.e0
215
216	! net downward heat flux from the ice to the ocean, expressed as a function of ocean
217	! temperature and turbulent mixing (McPhee, 1992)
218	zfric_u = MAX ( MIN( SQRT( ust2s(ji,jj) ) , zfric_umax ) , zfric_umin ) ! friction velocity
219	fdtcn(ji,jj) = zindb * rau0 * rcp * 0.006 * zfric_u * ( sst_m(ji,jj) + rt0 - tfu(ji,jj) )
220	qdtcn(ji,jj) = zindb * fdtcn(ji,jj) * frld(ji,jj) * rdt_ice
221
222	! partial computation of the lead energy budget (qldif)
223	IF( lk_cpl ) THEN
224	qldif(ji,jj) = tms(ji,jj) * rdt_ice &
225	& * ( ( qsr_tot(ji,jj) - qsr_ice(ji,jj,1) * zfricp ) * ( 1.0 - thcm(ji,jj) ) &
226	& + ( qns_tot(ji,jj) - qns_ice(ji,jj,1) * zfricp ) &
227	& + frld(ji,jj) * ( fdtcn(ji,jj) + ( 1.0 - zindb ) * fsbbq(ji,jj) ) )
228	ELSE
229	qldif(ji,jj) = tms(ji,jj) * rdt_ice * frld(ji,jj) &
230	& * ( qsr(ji,jj) * ( 1.0 - thcm(ji,jj) ) &
231	& + qns(ji,jj) + fdtcn(ji,jj) &
232	& + ( 1.0 - zindb ) * fsbbq(ji,jj) )
233	ENDIF
234	! parlat : percentage of energy used for lateral ablation (0.0)
235	zfntlat = 1.0 - MAX( rzero , SIGN( rone , - qldif(ji,jj) ) )
236	zpareff = 1.0 + ( parlat - 1.0 ) * zinda * zfntlat
237	zqlbsbq(ji,jj) = qldif(ji,jj) * ( 1.0 - zpareff ) / MAX( (1.0 - frld(ji,jj)) * rdt_ice , epsi16 )
238	qldif (ji,jj) = zpareff * qldif(ji,jj)
239	qdtcn (ji,jj) = zpareff * qdtcn(ji,jj)
240
241	! energy needed to bring ocean surface layer until its freezing
242	qcmif (ji,jj) = rau0 * rcp * fse3t_m(ji,jj) * ( tfu(ji,jj) - sst_m(ji,jj) - rt0 ) * ( 1 - zinda )
243
244	! calculate oceanic heat flux.
245	fbif (ji,jj) = zindb * ( fsbbq(ji,jj) / MAX( (1.0 - frld(ji,jj)) , epsi20 ) + fdtcn(ji,jj) )
246
247	! computation of the thermodynamic ice production (only needed for output)
248	hicifp(ji,jj) = hicif(ji,jj) * ( 1.0 - frld(ji,jj) )
249	END DO
250	END DO
251
252	! Select icy points and fulfill arrays for the vectorial grid.
253	!----------------------------------------------------------------------
254	nbpb = 0
255	DO jj = 1, jpj
256	DO ji = 1, jpi
257	IF ( frld(ji,jj) < 1.0 ) THEN
258	nbpb = nbpb + 1
259	npb(nbpb) = (jj - 1) * jpi + ji
260	ENDIF
261	END DO
262	END DO
263
264	IF(ln_ctl) THEN
265	CALL prt_ctl(tab2d_1=pfrld, clinfo1=' lim_thd: pfrld : ', tab2d_2=thcm , clinfo2=' thcm : ')
266	CALL prt_ctl(tab2d_1=fdtcn, clinfo1=' lim_thd: fdtcn : ', tab2d_2=qdtcn , clinfo2=' qdtcn : ')
267	CALL prt_ctl(tab2d_1=qldif, clinfo1=' lim_thd: qldif : ', tab2d_2=zqlbsbq, clinfo2=' zqlbsbq : ')
268	CALL prt_ctl(tab2d_1=qcmif, clinfo1=' lim_thd: qcmif : ', tab2d_2=fbif , clinfo2=' fbif : ')
269	zmsk(:,:,1) = tms(:,:)
270	CALL prt_ctl(tab2d_1=qcmif , clinfo1=' lim_thd: qcmif : ', mask1=zmsk)
271	CALL prt_ctl(tab2d_1=hicifp, clinfo1=' lim_thd: hicifp : ')
272	WRITE(charout, FMT="('lim_thd: nbpb = ',I4)") nbpb
273	CALL prt_ctl_info(charout)
274	ENDIF
275
276
277	! If there is no ice, do nothing. Otherwise, compute Top and Bottom accretion/ablation
278	!------------------------------------------------------------------------------------
279
280	IF( nbpb > 0 ) THEN
281	!
282	! put the variable in a 1-D array for thermodynamics process
283	CALL tab_2d_1d_2( nbpb, frld_1d (1:nbpb) , frld , jpi, jpj, npb(1:nbpb) )
284	CALL tab_2d_1d_2( nbpb, h_ice_1d (1:nbpb) , hicif , jpi, jpj, npb(1:nbpb) )
285	CALL tab_2d_1d_2( nbpb, h_snow_1d (1:nbpb) , hsnif , jpi, jpj, npb(1:nbpb) )
286	CALL tab_2d_1d_2( nbpb, sist_1d (1:nbpb) , sist , jpi, jpj, npb(1:nbpb) )
287	CALL tab_2d_1d_2( nbpb, tbif_1d (1:nbpb , 1 ), tbif(:,:,1) , jpi, jpj, npb(1:nbpb) )
288	CALL tab_2d_1d_2( nbpb, tbif_1d (1:nbpb , 2 ), tbif(:,:,2) , jpi, jpj, npb(1:nbpb) )
289	CALL tab_2d_1d_2( nbpb, tbif_1d (1:nbpb , 3 ), tbif(:,:,3) , jpi, jpj, npb(1:nbpb) )
290	CALL tab_2d_1d_2( nbpb, qsr_ice_1d (1:nbpb) , qsr_ice(:,:,1) , jpi, jpj, npb(1:nbpb) )
291	IF( l_trcdm2dc ) &
292	& CALL tab_2d_1d_2( nbpb, qsr_ice_mean_1d (1:nbpb), qsr_ice_mean(:,:,1), jpi, jpj, npb(1:nbpb) )
293	CALL tab_2d_1d_2( nbpb, fr1_i0_1d (1:nbpb) , fr1_i0 , jpi, jpj, npb(1:nbpb) )
294	CALL tab_2d_1d_2( nbpb, fr2_i0_1d (1:nbpb) , fr2_i0 , jpi, jpj, npb(1:nbpb) )
295	CALL tab_2d_1d_2( nbpb, qns_ice_1d(1:nbpb) , qns_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
296	CALL tab_2d_1d_2( nbpb, dqns_ice_1d(1:nbpb) , dqns_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
297	IF( .NOT. lk_cpl ) THEN
298	CALL tab_2d_1d_2( nbpb, qla_ice_1d (1:nbpb) , qla_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
299	CALL tab_2d_1d_2( nbpb, dqla_ice_1d(1:nbpb) , dqla_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
300	ENDIF
301	CALL tab_2d_1d_2( nbpb, tfu_1d (1:nbpb) , tfu , jpi, jpj, npb(1:nbpb) )
302	CALL tab_2d_1d_2( nbpb, sprecip_1d (1:nbpb) , sprecip , jpi, jpj, npb(1:nbpb) )
303	CALL tab_2d_1d_2( nbpb, fbif_1d (1:nbpb) , fbif , jpi, jpj, npb(1:nbpb) )
304	CALL tab_2d_1d_2( nbpb, thcm_1d (1:nbpb) , thcm , jpi, jpj, npb(1:nbpb) )
305	CALL tab_2d_1d_2( nbpb, qldif_1d (1:nbpb) , qldif , jpi, jpj, npb(1:nbpb) )
306	CALL tab_2d_1d_2( nbpb, qstbif_1d (1:nbpb) , qstoif , jpi, jpj, npb(1:nbpb) )
307	CALL tab_2d_1d_2( nbpb, rdm_ice_1d (1:nbpb) , rdm_ice , jpi, jpj, npb(1:nbpb) )
308	CALL tab_2d_1d_2( nbpb, rdq_ice_1d (1:nbpb) , rdq_ice , jpi, jpj, npb(1:nbpb) )
309	CALL tab_2d_1d_2( nbpb, dmgwi_1d (1:nbpb) , dmgwi , jpi, jpj, npb(1:nbpb) )
310	CALL tab_2d_1d_2( nbpb, rdm_snw_1d (1:nbpb) , rdm_snw , jpi, jpj, npb(1:nbpb) )
311	CALL tab_2d_1d_2( nbpb, rdq_snw_1d (1:nbpb) , rdq_snw , jpi, jpj, npb(1:nbpb) )
312	CALL tab_2d_1d_2( nbpb, qlbbq_1d (1:nbpb) , zqlbsbq , jpi, jpj, npb(1:nbpb) )
313	!
314	CALL lim_thd_zdf_2( 1, nbpb ) ! compute ice growth
315	!
316	! back to the geographic grid.
317	CALL tab_1d_2d_2( nbpb, frld , npb, frld_1d (1:nbpb) , jpi, jpj )
318	CALL tab_1d_2d_2( nbpb, hicif , npb, h_ice_1d (1:nbpb) , jpi, jpj )
319	CALL tab_1d_2d_2( nbpb, hsnif , npb, h_snow_1d (1:nbpb) , jpi, jpj )
320	CALL tab_1d_2d_2( nbpb, sist , npb, sist_1d (1:nbpb) , jpi, jpj )
321	CALL tab_1d_2d_2( nbpb, tbif(:,:,1), npb, tbif_1d (1:nbpb , 1 ), jpi, jpj )
322	CALL tab_1d_2d_2( nbpb, tbif(:,:,2), npb, tbif_1d (1:nbpb , 2 ), jpi, jpj )
323	CALL tab_1d_2d_2( nbpb, tbif(:,:,3), npb, tbif_1d (1:nbpb , 3 ), jpi, jpj )
324	CALL tab_1d_2d_2( nbpb, fscmbq , npb, fscbq_1d (1:nbpb) , jpi, jpj )
325	CALL tab_1d_2d_2( nbpb, ffltbif , npb, fltbif_1d (1:nbpb) , jpi, jpj )
326	CALL tab_1d_2d_2( nbpb, fstric , npb, fstbif_1d (1:nbpb) , jpi, jpj )
327	CALL tab_1d_2d_2( nbpb, qldif , npb, qldif_1d (1:nbpb) , jpi, jpj )
328	CALL tab_1d_2d_2( nbpb, qfvbq , npb, qfvbq_1d (1:nbpb) , jpi, jpj )
329	CALL tab_1d_2d_2( nbpb, qstoif , npb, qstbif_1d (1:nbpb) , jpi, jpj )
330	CALL tab_1d_2d_2( nbpb, rdm_ice , npb, rdm_ice_1d(1:nbpb) , jpi, jpj )
331	CALL tab_1d_2d_2( nbpb, rdq_ice , npb, rdq_ice_1d(1:nbpb) , jpi, jpj )
332	CALL tab_1d_2d_2( nbpb, dmgwi , npb, dmgwi_1d (1:nbpb) , jpi, jpj )
333	CALL tab_1d_2d_2( nbpb, rdm_snw , npb, rdm_snw_1d(1:nbpb) , jpi, jpj )
334	CALL tab_1d_2d_2( nbpb, rdq_snw , npb, rdq_snw_1d(1:nbpb) , jpi, jpj )
335	CALL tab_1d_2d_2( nbpb, zdvosif , npb, dvsbq_1d (1:nbpb) , jpi, jpj )
336	CALL tab_1d_2d_2( nbpb, zdvobif , npb, dvbbq_1d (1:nbpb) , jpi, jpj )
337	CALL tab_1d_2d_2( nbpb, zdvomif , npb, rdvomif_1d(1:nbpb) , jpi, jpj )
338	CALL tab_1d_2d_2( nbpb, zdvolif , npb, dvlbq_1d (1:nbpb) , jpi, jpj )
339	CALL tab_1d_2d_2( nbpb, zdvonif , npb, dvnbq_1d (1:nbpb) , jpi, jpj )
340	CALL tab_1d_2d_2( nbpb, qsr_ice(:,:,1), npb, qsr_ice_1d(1:nbpb) , jpi, jpj )
341	CALL tab_1d_2d_2( nbpb, qns_ice(:,:,1), npb, qns_ice_1d(1:nbpb) , jpi, jpj )
342	IF( l_trcdm2dc ) THEN
343	CALL tab_1d_2d_2( nbpb, fstric_mean , npb, fstbif_mean_1d (1:nbpb), jpi, jpj )
344	CALL tab_1d_2d_2( nbpb, qsr_ice_mean(:,:,1), npb, qsr_ice_mean_1d(1:nbpb), jpi, jpj )
345	ENDIF
346	IF( .NOT. lk_cpl ) CALL tab_1d_2d_2( nbpb, qla_ice(:,:,1), npb, qla_ice_1d(1:nbpb), jpi, jpj )
347	!
348	ENDIF
349
350	! Up-date sea ice thickness
351	!--------------------------
352	DO jj = 1, jpj
353	DO ji = 1, jpi
354	phicif(ji,jj) = hicif(ji,jj)
355	hicif(ji,jj) = hicif(ji,jj) * ( rone - MAX( rzero, SIGN( rone, - ( 1.0 - frld(ji,jj) ) ) ) )
356	END DO
357	END DO
358
359
360	! Tricky trick : add 2 to frld in the Southern Hemisphere
361	!--------------------------------------------------------
362	IF( fcor(1,1) < 0.e0 ) THEN
363	DO jj = 1, njeqm1
364	DO ji = 1, jpi
365	frld(ji,jj) = frld(ji,jj) + 2.0
366	END DO
367	END DO
368	ENDIF
369
370	CALL lbc_lnk( frld , 'T', 1. )
371
372	! Select points for lateral accretion (this occurs when heat exchange
373	! between ice and ocean is negative; ocean losing heat)
374	!-----------------------------------------------------------------
375	nbpac = 0
376	DO jj = 1, jpj
377	DO ji = 1, jpi
378	!i yes! IF ( ( qcmif(ji,jj) - qldif(ji,jj) ) > 0.e0 ) THEN
379	IF ( tms(ji,jj) * ( qcmif(ji,jj) - qldif(ji,jj) ) > 0.e0 ) THEN
380	nbpac = nbpac + 1
381	npac( nbpac ) = (jj - 1) * jpi + ji
382	ENDIF
383	END DO
384	END DO
385
386	IF(ln_ctl) THEN
387	CALL prt_ctl(tab2d_1=phicif, clinfo1=' lim_thd: phicif : ', tab2d_2=hicif, clinfo2=' hicif : ')
388	WRITE(charout, FMT="('lim_thd: nbpac = ',I4)") nbpac
389	CALL prt_ctl_info(charout)
390	ENDIF
391
392
393	! If ocean gains heat do nothing ; otherwise, one performs lateral accretion
394	!--------------------------------------------------------------------------------
395	IF( nbpac > 0 ) THEN
396	!
397	zlicegr(:,:) = rdm_ice(:,:) ! to output the lateral sea-ice growth
398	!...Put the variable in a 1-D array for lateral accretion
399	CALL tab_2d_1d_2( nbpac, frld_1d (1:nbpac) , frld , jpi, jpj, npac(1:nbpac) )
400	CALL tab_2d_1d_2( nbpac, h_snow_1d (1:nbpac) , hsnif , jpi, jpj, npac(1:nbpac) )
401	CALL tab_2d_1d_2( nbpac, h_ice_1d (1:nbpac) , hicif , jpi, jpj, npac(1:nbpac) )
402	CALL tab_2d_1d_2( nbpac, tbif_1d (1:nbpac , 1 ), tbif(:,:,1), jpi, jpj, npac(1:nbpac) )
403	CALL tab_2d_1d_2( nbpac, tbif_1d (1:nbpac , 2 ), tbif(:,:,2), jpi, jpj, npac(1:nbpac) )
404	CALL tab_2d_1d_2( nbpac, tbif_1d (1:nbpac , 3 ), tbif(:,:,3), jpi, jpj, npac(1:nbpac) )
405	CALL tab_2d_1d_2( nbpac, qldif_1d (1:nbpac) , qldif , jpi, jpj, npac(1:nbpac) )
406	CALL tab_2d_1d_2( nbpac, qcmif_1d (1:nbpac) , qcmif , jpi, jpj, npac(1:nbpac) )
407	CALL tab_2d_1d_2( nbpac, qstbif_1d (1:nbpac) , qstoif , jpi, jpj, npac(1:nbpac) )
408	CALL tab_2d_1d_2( nbpac, rdm_ice_1d(1:nbpac) , rdm_ice , jpi, jpj, npac(1:nbpac) )
409	CALL tab_2d_1d_2( nbpac, rdq_ice_1d(1:nbpac) , rdq_ice , jpi, jpj, npac(1:nbpac) )
410	CALL tab_2d_1d_2( nbpac, dvlbq_1d (1:nbpac) , zdvolif , jpi, jpj, npac(1:nbpac) )
411	CALL tab_2d_1d_2( nbpac, tfu_1d (1:nbpac) , tfu , jpi, jpj, npac(1:nbpac) )
412	!
413	CALL lim_thd_lac_2( 1 , nbpac ) ! lateral accretion routine.
414	!
415	! back to the geographic grid
416	CALL tab_1d_2d_2( nbpac, frld , npac(1:nbpac), frld_1d (1:nbpac) , jpi, jpj )
417	CALL tab_1d_2d_2( nbpac, hsnif , npac(1:nbpac), h_snow_1d (1:nbpac) , jpi, jpj )
418	CALL tab_1d_2d_2( nbpac, hicif , npac(1:nbpac), h_ice_1d (1:nbpac) , jpi, jpj )
419	CALL tab_1d_2d_2( nbpac, tbif(:,:,1), npac(1:nbpac), tbif_1d (1:nbpac , 1 ), jpi, jpj )
420	CALL tab_1d_2d_2( nbpac, tbif(:,:,2), npac(1:nbpac), tbif_1d (1:nbpac , 2 ), jpi, jpj )
421	CALL tab_1d_2d_2( nbpac, tbif(:,:,3), npac(1:nbpac), tbif_1d (1:nbpac , 3 ), jpi, jpj )
422	CALL tab_1d_2d_2( nbpac, qstoif , npac(1:nbpac), qstbif_1d (1:nbpac) , jpi, jpj )
423	CALL tab_1d_2d_2( nbpac, rdm_ice , npac(1:nbpac), rdm_ice_1d(1:nbpac) , jpi, jpj )
424	CALL tab_1d_2d_2( nbpac, rdq_ice , npac(1:nbpac), rdq_ice_1d(1:nbpac) , jpi, jpj )
425	CALL tab_1d_2d_2( nbpac, zdvolif , npac(1:nbpac), dvlbq_1d (1:nbpac) , jpi, jpj )
426	!
427	ENDIF
428
429
430	! Recover frld values between 0 and 1 in the Southern Hemisphere (tricky trick)
431	! Update daily thermodynamic ice production.
432	!------------------------------------------------------------------------------
433	DO jj = 1, jpj
434	DO ji = 1, jpi
435	frld (ji,jj) = MIN( frld(ji,jj), ABS( frld(ji,jj) - 2.0 ) )
436	fr_i (ji,jj) = 1.0 - frld(ji,jj)
437	hicifp(ji,jj) = hicif(ji,jj) * fr_i(ji,jj) - hicifp(ji,jj)
438	END DO
439	END DO
440
441	! Outputs
442	!--------------------------------------------------------------------------------
443	ztmp(:,:) = 1. - pfrld(:,:) ! fraction of ice after the dynamic, before the thermodynamic
444	IF( iom_use('ist_cea' ) ) CALL iom_put( 'ist_cea', (sist(:,:) - rt0) * ztmp(:,:) ) ! Ice surface temperature [Celius]
445	IF( iom_use('qsr_ai_cea' ) ) CALL iom_put( 'qsr_ai_cea', qsr_ice(:,:,1) * ztmp(:,:) ) ! Solar flux over the ice [W/m2]
446	IF( iom_use('qns_ai_cea' ) ) CALL iom_put( 'qns_ai_cea', qns_ice(:,:,1) * ztmp(:,:) ) ! Non-solar flux over the ice [W/m2]
447	IF( iom_use('qla_ai_cea' ) .AND. .NOT. lk_cpl ) &
448	& CALL iom_put( 'qla_ai_cea', qla_ice(:,:,1) * ztmp(:,:) ) ! Latent flux over the ice [W/m2]
449	!
450	IF( iom_use('snowthic_cea')) CALL iom_put( 'snowthic_cea', hsnif (:,:) * fr_i(:,:) ) ! Snow thickness [m]
451	IF( iom_use('icethic_cea' )) CALL iom_put( 'icethic_cea' , hicif (:,:) * fr_i(:,:) ) ! Ice thickness [m]
452	zztmp = 1.0 / rdt_ice
453	IF( iom_use('iceprod_cea') ) CALL iom_put( 'iceprod_cea' , hicifp (:,:) * zztmp ) ! Ice produced [m/s]
454	IF( iom_use('iiceconc' ) ) CALL iom_put( 'iiceconc' , fr_i(:,:) ) ! Ice concentration [-]
455	IF( iom_use('snowmel_cea') ) CALL iom_put( 'snowmel_cea' , rdm_snw(:,:) * zztmp ) ! Snow melt [kg/m2/s]
456	zztmp = rhoic / rdt_ice
457	IF( iom_use('sntoice_cea') ) CALL iom_put( 'sntoice_cea' , zdvonif(:,:) * zztmp ) ! Snow to Ice transformation [kg/m2/s]
458	IF( iom_use('ticemel_cea') ) CALL iom_put( 'ticemel_cea' , zdvosif(:,:) * zztmp ) ! Melt at Sea Ice top [kg/m2/s]
459	IF( iom_use('bicemel_cea') ) CALL iom_put( 'bicemel_cea' , zdvomif(:,:) * zztmp ) ! Melt at Sea Ice bottom [kg/m2/s]
460	IF( iom_use('licepro_cea') ) THEN
461	zlicegr(:,:) = MAX( 0.e0, rdm_ice(:,:)-zlicegr(:,:) )
462	CALL iom_put( 'licepro_cea' , zlicegr(:,:) * zztmp ) ! Lateral sea ice growth [kg/m2/s]
463	ENDIF
464	!
465	! Compute the Eastward & Northward sea-ice transport
466	IF( iom_use('u_imasstr') ) THEN
467	zztmp = 0.25 * rhoic
468	DO jj = 1, jpjm1
469	DO ji = 1, jpim1 ! NO vector opt.
470	! Ice velocities, volume & transport at U-points
471	zuice_m = u_ice(ji+1,jj+1) + u_ice(ji+1,jj )
472	zhice_u = hicif(ji,jj)e2t(ji,jj)fr_i(ji,jj) + hicif(ji+1,jj )e2t(ji+1,jj )fr_i(ji+1,jj )
473	zu_imasstr(ji,jj) = zztmp * zhice_u * zuice_m
474	END DO
475	END DO
476	CALL lbc_lnk( zu_imasstr, 'U', -1. )
477	CALL iom_put( 'u_imasstr', zu_imasstr(:,:) ) ! Ice transport along i-axis at U-point [kg/s]
478	ENDIF
479	IF( iom_use('v_imasstr') ) THEN
480	zztmp = 0.25 * rhoic
481	DO jj = 1, jpjm1
482	DO ji = 1, jpim1 ! NO vector opt.
483	! Ice velocities, volume & transport at V-points
484	zvice_m = v_ice(ji+1,jj+1) + v_ice(ji ,jj+1)
485	zhice_v = hicif(ji,jj)e1t(ji,jj)fr_i(ji,jj) + hicif(ji ,jj+1)e1t(ji ,jj+1)fr_i(ji ,jj+1)
486	zv_imasstr(ji,jj) = zztmp * zhice_v * zvice_m
487	END DO
488	END DO
489	CALL lbc_lnk( zv_imasstr, 'V', -1. )
490	CALL iom_put( 'v_imasstr', zv_imasstr(:,:) ) ! Ice transport along j-axis at V-point [kg/s]
491	ENDIF
492
493	!! Fram Strait sea-ice transport (sea-ice + snow) (in ORCA2 = 5 points)
494	IF( iom_use('fram_trans') .and. cp_cfg == "orca" .AND. jp_cfg == 2 ) THEN ! ORCA R2 configuration
495	DO jj = mj0(137), mj1(137) ! B grid
496	IF( mj0(jj-1) >= nldj ) THEN
497	DO ji = MAX(mi0(134),nldi), MIN(mi1(138),nlei)
498	zrhoij = e1t(ji,jj ) * fr_i(ji,jj ) * ( rhoichicif(ji,jj ) + rhosnhsnif(ji,jj ) )
499	zrhoijm1 = e1t(ji,jj-1) * fr_i(ji,jj-1) * ( rhoichicif(ji,jj-1) + rhosnhsnif(ji,jj-1) )
500	ztr_fram = ztr_fram - 0.25 * ( v_ice(ji,jj)+ v_ice(ji+1,jj) ) * ( zrhoij + zrhoijm1 )
501	END DO
502	ENDIF
503	END DO
504	IF( lk_mpp ) CALL mpp_sum( ztr_fram )
505	CALL iom_put( 'fram_trans', ztr_fram ) ! Ice transport through Fram strait [kg/s]
506	ENDIF
507
508	IF( iom_use('ice_pres') .OR. iom_use('ist_ipa') .OR. iom_use('uice_ipa') .OR. iom_use('vice_ipa') ) THEN
509	!! ce ztmp(:,:) = 1. - AINT( frld(:,:), wp ) ! return 1 as soon as there is ice
510	!! ce A big warning because the model crashes on IDRIS/IBM SP6 with xlf 13.1.0.3, see ticket #761
511	!! ce We Unroll the loop and everything works fine
512	DO jj = 1, jpj
513	DO ji = 1, jpi
514	ztmp(ji,jj) = 1. - AINT( frld(ji,jj), wp ) ! return 1 as soon as there is ice
515	END DO
516	END DO
517	!
518	IF( iom_use('ice_pres') ) CALL iom_put( 'ice_pres', ztmp ) ! Ice presence [-]
519	IF( iom_use('ist_ipa' ) ) CALL iom_put( 'ist_ipa' , ( sist(:,:) - rt0 ) * ztmp(:,:) ) ! Ice surface temperature [Celius]
520	IF( iom_use('uice_ipa') ) CALL iom_put( 'uice_ipa', u_ice(:,:) * ztmp(:,:) ) ! Ice velocity along i-axis at I-point [m/s]
521	IF( iom_use('vice_ipa') ) CALL iom_put( 'vice_ipa', v_ice(:,:) * ztmp(:,:) ) ! Ice velocity along j-axis at I-point [m/s]
522	ENDIF
523
524	IF(ln_ctl) THEN
525	CALL prt_ctl_info(' lim_thd end ')
526	CALL prt_ctl( tab2d_1=hicif , clinfo1=' lim_thd: hicif : ', tab2d_2=hsnif , clinfo2=' hsnif : ' )
527	CALL prt_ctl( tab2d_1=frld , clinfo1=' lim_thd: frld : ', tab2d_2=hicifp, clinfo2=' hicifp : ' )
528	CALL prt_ctl( tab2d_1=phicif , clinfo1=' lim_thd: phicif : ', tab2d_2=pfrld , clinfo2=' pfrld : ' )
529	CALL prt_ctl( tab2d_1=sist , clinfo1=' lim_thd: sist : ' )
530	CALL prt_ctl( tab2d_1=tbif(:,:,1), clinfo1=' lim_thd: tbif 1 : ' )
531	CALL prt_ctl( tab2d_1=tbif(:,:,2), clinfo1=' lim_thd: tbif 2 : ' )
532	CALL prt_ctl( tab2d_1=tbif(:,:,3), clinfo1=' lim_thd: tbif 3 : ' )
533	CALL prt_ctl( tab2d_1=fdtcn , clinfo1=' lim_thd: fdtcn : ', tab2d_2=qdtcn , clinfo2=' qdtcn : ' )
534	CALL prt_ctl( tab2d_1=qstoif , clinfo1=' lim_thd: qstoif : ', tab2d_2=fsbbq , clinfo2=' fsbbq : ' )
535	ENDIF
536	!
537	CALL wrk_dealloc( jpi, jpj, ztmp, zqlbsbq, zlicegr, zdvosif, zdvobif, zdvolif, zdvonif, zdvomif, zu_imasstr, zv_imasstr )
538	CALL wrk_dealloc( jpi, jpj, jpk, zmsk )
539	!
540	END SUBROUTINE lim_thd_2
541
542
543	SUBROUTINE lim_thd_init_2
544	!!-------------------------------------------------------------------
545	!! * ROUTINE lim_thd_init_2 *
546	!!
547	!! ** Purpose : Physical constants and parameters linked to the ice
548	!! thermodynamics
549	!!
550	!! ** Method : Read the namicethd namelist and check the ice-thermo
551	!! parameter values called at the first timestep (nit000)
552	!!
553	!! ** input : Namelist namicether
554	!!-------------------------------------------------------------------
555	INTEGER :: ios ! Local integer output status for namelist read
556	NAMELIST/namicethd/ hmelt , hiccrit, hicmin, hiclim, amax , &
557	& swiqst, sbeta , parlat, hakspl, hibspl, exld, &
558	& hakdif, hnzst , thth , parsub, alphs
559	!!-------------------------------------------------------------------
560
561	REWIND( numnam_ice_ref ) ! Namelist namicethd in reference namelist : Ice thermodynamics
562	READ ( numnam_ice_ref, namicethd, IOSTAT = ios, ERR = 901)
563	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namicethd in reference namelist', lwp )
564
565	REWIND( numnam_ice_cfg ) ! Namelist namicethd in configuration namelist : Ice thermodynamics
566	READ ( numnam_ice_cfg, namicethd, IOSTAT = ios, ERR = 902 )
567	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namicethd in configuration namelist', lwp )
568	IF(lwm) WRITE ( numoni, namicethd )
569
570	IF( lk_cpl .AND. parsub /= 0.0 ) CALL ctl_stop( 'In coupled mode, use parsub = 0. or send dqla' )
571	!
572	IF(lwp) THEN ! control print
573	WRITE(numout,*)
574	WRITE(numout,*)'lim_thd_init_2: ice parameters for ice thermodynamic computation '
575	WRITE(numout,*)'~~~~~~~~~~~~~~'
576	WRITE(numout,*)' maximum melting at the bottom hmelt = ', hmelt
577	WRITE(numout,*)' ice thick. for lateral accretion in NH (SH) hiccrit(1/2) = ', hiccrit
578	WRITE(numout,*)' ice thick. corr. to max. energy stored in brine pocket hicmin = ', hicmin
579	WRITE(numout,*)' minimum ice thickness hiclim = ', hiclim
580	WRITE(numout,*)' maximum lead fraction amax = ', amax
581	WRITE(numout,*)' energy stored in brine pocket (=1) or not (=0) swiqst = ', swiqst
582	WRITE(numout,*)' numerical carac. of the scheme for diffusion in ice '
583	WRITE(numout,*)' Cranck-Nicholson (=0.5), implicit (=1), explicit (=0) sbeta = ', sbeta
584	WRITE(numout,*)' percentage of energy used for lateral ablation parlat = ', parlat
585	WRITE(numout,*)' slope of distr. for Hakkinen-Mellor lateral melting hakspl = ', hakspl
586	WRITE(numout,*)' slope of distribution for Hibler lateral melting hibspl = ', hibspl
587	WRITE(numout,*)' exponent for leads-closure rate exld = ', exld
588	WRITE(numout,*)' coefficient for diffusions of ice and snow hakdif = ', hakdif
589	WRITE(numout,*)' threshold thick. for comp. of eq. thermal conductivity zhth = ', thth
590	WRITE(numout,*)' thickness of the surf. layer in temp. computation hnzst = ', hnzst
591	WRITE(numout,*)' switch for snow sublimation (=1) or not (=0) parsub = ', parsub
592	WRITE(numout,*)' coefficient for snow density when snow ice formation alphs = ', alphs
593	ENDIF
594	!
595	uscomi = 1.0 / ( 1.0 - amax ) ! inverse of minimum lead fraction
596	rcdsn = hakdif * rcdsn
597	rcdic = hakdif * rcdic
598	!
599	IF( hsndif > 100.e0 .OR. hicdif > 100.e0 ) THEN
600	cnscg = 0.e0
601	ELSE
602	cnscg = rcpsn / rcpic ! ratio rcpsn/rcpic
603	ENDIF
604	!
605	END SUBROUTINE lim_thd_init_2
606
607	#else
608	!!----------------------------------------------------------------------
609	!! Default option Dummy module NO LIM 2.0 sea-ice model
610	!!----------------------------------------------------------------------
611	CONTAINS
612	SUBROUTINE lim_thd_2 ! Dummy routine
613	END SUBROUTINE lim_thd_2
614	#endif
615
616	!!======================================================================
617	END MODULE limthd_2

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