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limthd_2.F90 in branches/2016/dev_r6519_HPC_4/NEMOGCM/NEMO/LIM_SRC_2 – NEMO

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source: branches/2016/dev_r6519_HPC_4/NEMOGCM/NEMO/LIM_SRC_2/limthd_2.F90 @ 7037

Last change on this file since 7037 was 7037, checked in by mocavero, 8 years ago
ORCA2_LIM_PISCES hybrid version update
Property svn:keywords set to `Id`
File size: 36.0 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 ! ocean domain
21	USE ice_2 ! LIM sea-ice variables
22	USE sbc_oce ! surface boundary condition: ocean
23	USE sbc_ice ! surface boundary condition: sea-ice
24	USE thd_ice_2 ! LIM thermodynamic sea-ice variables
25	USE dom_ice_2 ! LIM sea-ice domain
26	USE limthd_zdf_2 !
27	USE limthd_lac_2 !
28	USE limtab_2 !
29	!
30	USE in_out_manager ! I/O manager
31	USE lbclnk !
32	USE lib_mpp !
33	USE wrk_nemo ! work arrays
34	USE iom ! IOM library
35	USE prtctl ! Print control
36	USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined)
37
38	IMPLICIT NONE
39	PRIVATE
40
41	PUBLIC lim_thd_2 ! called by lim_step
42
43	REAL(wp) :: epsi20 = 1.e-20 ! constant values
44	REAL(wp) :: epsi16 = 1.e-16 !
45	REAL(wp) :: epsi04 = 1.e-04 !
46	REAL(wp) :: rzero = 0._wp !
47	REAL(wp) :: rone = 1._wp !
48
49	!! * Substitutions
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 ) CALL lim_thd_init_2 ! Initialization (first time-step only)
117
118	!-------------------------------------------!
119	! Initilization of diagnostic variables !
120	!-------------------------------------------!
121
122	!!gm needed? yes at least for some of these arrays
123	!$OMP PARALLEL
124	!$OMP WORKSHARE
125	zdvosif(:,:) = 0.e0 ! variation of ice volume at surface
126	zdvobif(:,:) = 0.e0 ! variation of ice volume at bottom
127	zdvolif(:,:) = 0.e0 ! total variation of ice volume
128	zdvonif(:,:) = 0.e0 ! transformation of snow to sea-ice volume
129	zlicegr(:,:) = 0.e0 ! lateral variation of ice volume
130	zdvomif(:,:) = 0.e0 ! variation of ice volume at bottom due to melting only
131	ztr_fram = 0.e0 ! sea-ice transport through Fram strait
132	fstric (:,:) = 0.e0 ! part of solar radiation absorbing inside the ice
133	fscmbq (:,:) = 0.e0 ! linked with fstric
134	ffltbif(:,:) = 0.e0 ! linked with fstric
135	qfvbq (:,:) = 0.e0 ! linked with fstric
136	rdm_snw(:,:) = 0.e0 ! variation of snow mass over 1 time step
137	rdq_snw(:,:) = 0.e0 ! heat content associated with rdm_snw
138	rdm_ice(:,:) = 0.e0 ! variation of ice mass over 1 time step
139	rdq_ice(:,:) = 0.e0 ! heat content associated with rdm_ice
140	zmsk (:,:,:) = 0.e0
141	!$OMP END WORKSHARE NOWAIT
142
143	! set to zero snow thickness smaller than epsi04
144	!$OMP DO schedule(static) private(jj,ji)
145	DO jj = 1, jpj
146	DO ji = 1, jpi
147	hsnif(ji,jj) = hsnif(ji,jj) * MAX( rzero, SIGN( rone , hsnif(ji,jj) - epsi04 ) )
148	END DO
149	END DO
150	!$OMP END DO NOWAIT
151	!$OMP END PARALLEL
152	!!gm better coded (do not use SIGN...)
153	! WHERE( hsnif(:,:) < epsi04 ) hsnif(:,:) = 0.e0
154	!!gm
155
156	IF(ln_ctl) CALL prt_ctl( tab2d_1=hsnif, clinfo1=' lim_thd: hsnif : ' )
157
158	!-----------------------------------!
159	! Treatment of particular cases !
160	!-----------------------------------!
161
162	!$OMP PARALLEL DO schedule(static) private(jj,ji,zindg,zthsnice,zindb,za,zh)
163	DO jj = 1, jpj
164	DO ji = 1, jpi
165	! snow is transformed into ice if the original ice cover disappears.
166	zindg = tms(ji,jj) * MAX( rzero , SIGN( rone , -hicif(ji,jj) ) )
167	hicif(ji,jj) = hicif(ji,jj) + zindg * rhosn * hsnif(ji,jj) / rau0
168	hsnif(ji,jj) = ( rone - zindg ) * hsnif(ji,jj) + zindg * hicif(ji,jj) * ( rau0 - rhoic ) / rhosn
169	dmgwi(ji,jj) = zindg * (1.0 - frld(ji,jj)) * rhoic * hicif(ji,jj) ! snow/ice mass
170
171	! the lead fraction, frld, must be little than or equal to amax (ice ridging).
172	zthsnice = hsnif(ji,jj) + hicif(ji,jj)
173	zindb = tms(ji,jj) * ( 1.0 - MAX( rzero , SIGN( rone , - zthsnice ) ) )
174	za = zindb * MIN( rone, ( 1.0 - frld(ji,jj) ) * uscomi )
175	hsnif (ji,jj) = hsnif(ji,jj) * za
176	hicif (ji,jj) = hicif(ji,jj) * za
177	qstoif(ji,jj) = qstoif(ji,jj) * za
178	frld (ji,jj) = 1.0 - zindb * ( 1.0 - frld(ji,jj) ) / MAX( za, epsi20 )
179
180	! the in situ ice thickness, hicif, must be equal to or greater than hiclim.
181	zh = MAX( rone , zindb * hiclim / MAX( hicif(ji,jj), epsi20 ) )
182	hsnif (ji,jj) = hsnif(ji,jj) * zh
183	hicif (ji,jj) = hicif(ji,jj) * zh
184	qstoif(ji,jj) = qstoif(ji,jj) * zh
185	frld (ji,jj) = ( frld(ji,jj) + ( zh - 1.0 ) ) / zh
186	END DO
187	END DO
188
189	IF(ln_ctl) THEN
190	CALL prt_ctl( tab2d_1=hicif , clinfo1=' lim_thd: hicif : ' )
191	CALL prt_ctl( tab2d_1=hsnif , clinfo1=' lim_thd: hsnif : ' )
192	CALL prt_ctl( tab2d_1=dmgwi , clinfo1=' lim_thd: dmgwi : ' )
193	CALL prt_ctl( tab2d_1=qstoif, clinfo1=' lim_thd: qstoif : ' )
194	CALL prt_ctl( tab2d_1=frld , clinfo1=' lim_thd: frld : ' )
195	ENDIF
196
197
198	!-------------------------------!
199	! Thermodynamics of sea ice !
200	!-------------------------------!
201
202	! Partial computation of forcing for the thermodynamic sea ice model.
203	!--------------------------------------------------------------------------
204
205	!$OMP PARALLEL DO schedule(static) private(jj,ji,zthsnice,zindb,zinda,zfricp,zfric_u,zfntlat,zpareff)
206	DO jj = 1, jpj
207	DO ji = 1, jpi
208	zthsnice = hsnif(ji,jj) + hicif(ji,jj)
209	zindb = tms(ji,jj) * ( 1.0 - MAX( rzero , SIGN( rone , - zthsnice ) ) )
210	pfrld(ji,jj) = frld(ji,jj)
211	zfricp = 1.0 - frld(ji,jj)
212	zinda = 1.0 - MAX( rzero , SIGN( rone , - zfricp ) )
213
214	! solar irradiance transmission at the mixed layer bottom and used in the lead heat budget
215	thcm(ji,jj) = 0.e0
216
217	! net downward heat flux from the ice to the ocean, expressed as a function of ocean
218	! temperature and turbulent mixing (McPhee, 1992)
219	zfric_u = MAX ( MIN( SQRT( ust2s(ji,jj) ) , zfric_umax ) , zfric_umin ) ! friction velocity
220	fdtcn(ji,jj) = zindb * rau0 * rcp * 0.006 * zfric_u * ( sst_m(ji,jj) + rt0 - tfu(ji,jj) )
221	qdtcn(ji,jj) = zindb * fdtcn(ji,jj) * frld(ji,jj) * rdt_ice
222
223	! partial computation of the lead energy budget (qldif)
224	IF( ln_cpl ) THEN
225	qldif(ji,jj) = tms(ji,jj) * rdt_ice &
226	& * ( ( qsr_tot(ji,jj) - qsr_ice(ji,jj,1) * zfricp ) * ( 1.0 - thcm(ji,jj) ) &
227	& + ( qns_tot(ji,jj) - qns_ice(ji,jj,1) * zfricp ) &
228	& + frld(ji,jj) * ( fdtcn(ji,jj) + ( 1.0 - zindb ) * fsbbq(ji,jj) ) )
229	ELSE
230	qldif(ji,jj) = tms(ji,jj) * rdt_ice * frld(ji,jj) &
231	& * ( qsr(ji,jj) * ( 1.0 - thcm(ji,jj) ) &
232	& + qns(ji,jj) + fdtcn(ji,jj) &
233	& + ( 1.0 - zindb ) * fsbbq(ji,jj) )
234	ENDIF
235	! parlat : percentage of energy used for lateral ablation (0.0)
236	zfntlat = 1.0 - MAX( rzero , SIGN( rone , - qldif(ji,jj) ) )
237	zpareff = 1.0 + ( parlat - 1.0 ) * zinda * zfntlat
238	zqlbsbq(ji,jj) = qldif(ji,jj) * ( 1.0 - zpareff ) / MAX( (1.0 - frld(ji,jj)) * rdt_ice , epsi16 )
239	qldif (ji,jj) = zpareff * qldif(ji,jj)
240	qdtcn (ji,jj) = zpareff * qdtcn(ji,jj)
241
242	! energy needed to bring ocean surface layer until its freezing
243	qcmif (ji,jj) = rau0 * rcp * e3t_m(ji,jj) * ( tfu(ji,jj) - sst_m(ji,jj) - rt0 ) * ( 1 - zinda )
244
245	! calculate oceanic heat flux.
246	fbif (ji,jj) = zindb * ( fsbbq(ji,jj) / MAX( (1.0 - frld(ji,jj)) , epsi20 ) + fdtcn(ji,jj) )
247
248	! computation of the thermodynamic ice production (only needed for output)
249	hicifp(ji,jj) = hicif(ji,jj) * ( 1.0 - frld(ji,jj) )
250	END DO
251	END DO
252
253	! Select icy points and fulfill arrays for the vectorial grid.
254	!----------------------------------------------------------------------
255	nbpb = 0
256	DO jj = 1, jpj
257	DO ji = 1, jpi
258	IF ( frld(ji,jj) < 1.0 ) THEN
259	nbpb = nbpb + 1
260	npb(nbpb) = (jj - 1) * jpi + ji
261	ENDIF
262	END DO
263	END DO
264
265	IF(ln_ctl) THEN
266	CALL prt_ctl(tab2d_1=pfrld, clinfo1=' lim_thd: pfrld : ', tab2d_2=thcm , clinfo2=' thcm : ')
267	CALL prt_ctl(tab2d_1=fdtcn, clinfo1=' lim_thd: fdtcn : ', tab2d_2=qdtcn , clinfo2=' qdtcn : ')
268	CALL prt_ctl(tab2d_1=qldif, clinfo1=' lim_thd: qldif : ', tab2d_2=zqlbsbq, clinfo2=' zqlbsbq : ')
269	CALL prt_ctl(tab2d_1=qcmif, clinfo1=' lim_thd: qcmif : ', tab2d_2=fbif , clinfo2=' fbif : ')
270	zmsk(:,:,1) = tms(:,:)
271	CALL prt_ctl(tab2d_1=qcmif , clinfo1=' lim_thd: qcmif : ', mask1=zmsk)
272	CALL prt_ctl(tab2d_1=hicifp, clinfo1=' lim_thd: hicifp : ')
273	WRITE(charout, FMT="('lim_thd: nbpb = ',I4)") nbpb
274	CALL prt_ctl_info(charout)
275	ENDIF
276
277
278	! If there is no ice, do nothing. Otherwise, compute Top and Bottom accretion/ablation
279	!------------------------------------------------------------------------------------
280
281	IF( nbpb > 0 ) THEN
282	!
283	! put the variable in a 1-D array for thermodynamics process
284	CALL tab_2d_1d_2( nbpb, frld_1d (1:nbpb) , frld , jpi, jpj, npb(1:nbpb) )
285	CALL tab_2d_1d_2( nbpb, h_ice_1d (1:nbpb) , hicif , jpi, jpj, npb(1:nbpb) )
286	CALL tab_2d_1d_2( nbpb, h_snow_1d (1:nbpb) , hsnif , jpi, jpj, npb(1:nbpb) )
287	CALL tab_2d_1d_2( nbpb, sist_1d (1:nbpb) , sist , jpi, jpj, npb(1:nbpb) )
288	CALL tab_2d_1d_2( nbpb, tbif_1d (1:nbpb , 1 ), tbif(:,:,1) , jpi, jpj, npb(1:nbpb) )
289	CALL tab_2d_1d_2( nbpb, tbif_1d (1:nbpb , 2 ), tbif(:,:,2) , jpi, jpj, npb(1:nbpb) )
290	CALL tab_2d_1d_2( nbpb, tbif_1d (1:nbpb , 3 ), tbif(:,:,3) , jpi, jpj, npb(1:nbpb) )
291	CALL tab_2d_1d_2( nbpb, qsr_ice_1d (1:nbpb) , qsr_ice(:,:,1) , jpi, jpj, npb(1:nbpb) )
292	CALL tab_2d_1d_2( nbpb, fr1_i0_1d (1:nbpb) , fr1_i0 , jpi, jpj, npb(1:nbpb) )
293	CALL tab_2d_1d_2( nbpb, fr2_i0_1d (1:nbpb) , fr2_i0 , jpi, jpj, npb(1:nbpb) )
294	CALL tab_2d_1d_2( nbpb, qns_ice_1d(1:nbpb) , qns_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
295	CALL tab_2d_1d_2( nbpb, dqns_ice_1d(1:nbpb) , dqns_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
296	IF( .NOT. ln_cpl ) THEN
297	CALL tab_2d_1d_2( nbpb, qla_ice_1d (1:nbpb) , qla_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
298	CALL tab_2d_1d_2( nbpb, dqla_ice_1d(1:nbpb) , dqla_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
299	ENDIF
300	CALL tab_2d_1d_2( nbpb, tfu_1d (1:nbpb) , tfu , jpi, jpj, npb(1:nbpb) )
301	CALL tab_2d_1d_2( nbpb, sprecip_1d (1:nbpb) , sprecip , jpi, jpj, npb(1:nbpb) )
302	CALL tab_2d_1d_2( nbpb, fbif_1d (1:nbpb) , fbif , jpi, jpj, npb(1:nbpb) )
303	CALL tab_2d_1d_2( nbpb, thcm_1d (1:nbpb) , thcm , jpi, jpj, npb(1:nbpb) )
304	CALL tab_2d_1d_2( nbpb, qldif_1d (1:nbpb) , qldif , jpi, jpj, npb(1:nbpb) )
305	CALL tab_2d_1d_2( nbpb, qstbif_1d (1:nbpb) , qstoif , jpi, jpj, npb(1:nbpb) )
306	CALL tab_2d_1d_2( nbpb, rdm_ice_1d (1:nbpb) , rdm_ice , jpi, jpj, npb(1:nbpb) )
307	CALL tab_2d_1d_2( nbpb, rdq_ice_1d (1:nbpb) , rdq_ice , jpi, jpj, npb(1:nbpb) )
308	CALL tab_2d_1d_2( nbpb, dmgwi_1d (1:nbpb) , dmgwi , jpi, jpj, npb(1:nbpb) )
309	CALL tab_2d_1d_2( nbpb, rdm_snw_1d (1:nbpb) , rdm_snw , jpi, jpj, npb(1:nbpb) )
310	CALL tab_2d_1d_2( nbpb, rdq_snw_1d (1:nbpb) , rdq_snw , jpi, jpj, npb(1:nbpb) )
311	CALL tab_2d_1d_2( nbpb, qlbbq_1d (1:nbpb) , zqlbsbq , jpi, jpj, npb(1:nbpb) )
312	!
313	CALL lim_thd_zdf_2( 1, nbpb ) ! compute ice growth
314	!
315	! back to the geographic grid.
316	CALL tab_1d_2d_2( nbpb, frld , npb, frld_1d (1:nbpb) , jpi, jpj )
317	CALL tab_1d_2d_2( nbpb, hicif , npb, h_ice_1d (1:nbpb) , jpi, jpj )
318	CALL tab_1d_2d_2( nbpb, hsnif , npb, h_snow_1d (1:nbpb) , jpi, jpj )
319	CALL tab_1d_2d_2( nbpb, sist , npb, sist_1d (1:nbpb) , jpi, jpj )
320	CALL tab_1d_2d_2( nbpb, tbif(:,:,1), npb, tbif_1d (1:nbpb , 1 ), jpi, jpj )
321	CALL tab_1d_2d_2( nbpb, tbif(:,:,2), npb, tbif_1d (1:nbpb , 2 ), jpi, jpj )
322	CALL tab_1d_2d_2( nbpb, tbif(:,:,3), npb, tbif_1d (1:nbpb , 3 ), jpi, jpj )
323	CALL tab_1d_2d_2( nbpb, fscmbq , npb, fscbq_1d (1:nbpb) , jpi, jpj )
324	CALL tab_1d_2d_2( nbpb, ffltbif , npb, fltbif_1d (1:nbpb) , jpi, jpj )
325	CALL tab_1d_2d_2( nbpb, fstric , npb, fstbif_1d (1:nbpb) , jpi, jpj )
326	CALL tab_1d_2d_2( nbpb, qldif , npb, qldif_1d (1:nbpb) , jpi, jpj )
327	CALL tab_1d_2d_2( nbpb, qfvbq , npb, qfvbq_1d (1:nbpb) , jpi, jpj )
328	CALL tab_1d_2d_2( nbpb, qstoif , npb, qstbif_1d (1:nbpb) , jpi, jpj )
329	CALL tab_1d_2d_2( nbpb, rdm_ice , npb, rdm_ice_1d(1:nbpb) , jpi, jpj )
330	CALL tab_1d_2d_2( nbpb, rdq_ice , npb, rdq_ice_1d(1:nbpb) , jpi, jpj )
331	CALL tab_1d_2d_2( nbpb, dmgwi , npb, dmgwi_1d (1:nbpb) , jpi, jpj )
332	CALL tab_1d_2d_2( nbpb, rdm_snw , npb, rdm_snw_1d(1:nbpb) , jpi, jpj )
333	CALL tab_1d_2d_2( nbpb, rdq_snw , npb, rdq_snw_1d(1:nbpb) , jpi, jpj )
334	CALL tab_1d_2d_2( nbpb, zdvosif , npb, dvsbq_1d (1:nbpb) , jpi, jpj )
335	CALL tab_1d_2d_2( nbpb, zdvobif , npb, dvbbq_1d (1:nbpb) , jpi, jpj )
336	CALL tab_1d_2d_2( nbpb, zdvomif , npb, rdvomif_1d(1:nbpb) , jpi, jpj )
337	CALL tab_1d_2d_2( nbpb, zdvolif , npb, dvlbq_1d (1:nbpb) , jpi, jpj )
338	CALL tab_1d_2d_2( nbpb, zdvonif , npb, dvnbq_1d (1:nbpb) , jpi, jpj )
339	CALL tab_1d_2d_2( nbpb, qsr_ice(:,:,1), npb, qsr_ice_1d(1:nbpb) , jpi, jpj )
340	CALL tab_1d_2d_2( nbpb, qns_ice(:,:,1), npb, qns_ice_1d(1:nbpb) , jpi, jpj )
341	IF( .NOT. ln_cpl ) CALL tab_1d_2d_2( nbpb, qla_ice(:,:,1), npb, qla_ice_1d(1:nbpb), jpi, jpj )
342	!
343	ENDIF
344
345	! Up-date sea ice thickness
346	!--------------------------
347	!$OMP PARALLEL DO schedule(static) private(jj,ji)
348	DO jj = 1, jpj
349	DO ji = 1, jpi
350	phicif(ji,jj) = hicif(ji,jj)
351	hicif(ji,jj) = hicif(ji,jj) * ( rone - MAX( rzero, SIGN( rone, - ( 1.0 - frld(ji,jj) ) ) ) )
352	END DO
353	END DO
354
355
356	! Tricky trick : add 2 to frld in the Southern Hemisphere
357	!--------------------------------------------------------
358	IF( fcor(1,1) < 0.e0 ) THEN
359	!$OMP PARALLEL DO schedule(static) private(jj,ji)
360	DO jj = 1, njeqm1
361	DO ji = 1, jpi
362	frld(ji,jj) = frld(ji,jj) + 2.0
363	END DO
364	END DO
365	ENDIF
366
367	CALL lbc_lnk( frld , 'T', 1. )
368
369	! Select points for lateral accretion (this occurs when heat exchange
370	! between ice and ocean is negative; ocean losing heat)
371	!-----------------------------------------------------------------
372	nbpac = 0
373	DO jj = 1, jpj
374	DO ji = 1, jpi
375	!i yes! IF ( ( qcmif(ji,jj) - qldif(ji,jj) ) > 0.e0 ) THEN
376	IF ( tms(ji,jj) * ( qcmif(ji,jj) - qldif(ji,jj) ) > 0.e0 ) THEN
377	nbpac = nbpac + 1
378	npac( nbpac ) = (jj - 1) * jpi + ji
379	ENDIF
380	END DO
381	END DO
382
383	IF(ln_ctl) THEN
384	CALL prt_ctl(tab2d_1=phicif, clinfo1=' lim_thd: phicif : ', tab2d_2=hicif, clinfo2=' hicif : ')
385	WRITE(charout, FMT="('lim_thd: nbpac = ',I4)") nbpac
386	CALL prt_ctl_info(charout)
387	ENDIF
388
389
390	! If ocean gains heat do nothing ; otherwise, one performs lateral accretion
391	!--------------------------------------------------------------------------------
392	IF( nbpac > 0 ) THEN
393	!
394	zlicegr(:,:) = rdm_ice(:,:) ! to output the lateral sea-ice growth
395	!...Put the variable in a 1-D array for lateral accretion
396	CALL tab_2d_1d_2( nbpac, frld_1d (1:nbpac) , frld , jpi, jpj, npac(1:nbpac) )
397	CALL tab_2d_1d_2( nbpac, h_snow_1d (1:nbpac) , hsnif , jpi, jpj, npac(1:nbpac) )
398	CALL tab_2d_1d_2( nbpac, h_ice_1d (1:nbpac) , hicif , jpi, jpj, npac(1:nbpac) )
399	CALL tab_2d_1d_2( nbpac, tbif_1d (1:nbpac , 1 ), tbif(:,:,1), jpi, jpj, npac(1:nbpac) )
400	CALL tab_2d_1d_2( nbpac, tbif_1d (1:nbpac , 2 ), tbif(:,:,2), jpi, jpj, npac(1:nbpac) )
401	CALL tab_2d_1d_2( nbpac, tbif_1d (1:nbpac , 3 ), tbif(:,:,3), jpi, jpj, npac(1:nbpac) )
402	CALL tab_2d_1d_2( nbpac, qldif_1d (1:nbpac) , qldif , jpi, jpj, npac(1:nbpac) )
403	CALL tab_2d_1d_2( nbpac, qcmif_1d (1:nbpac) , qcmif , jpi, jpj, npac(1:nbpac) )
404	CALL tab_2d_1d_2( nbpac, qstbif_1d (1:nbpac) , qstoif , jpi, jpj, npac(1:nbpac) )
405	CALL tab_2d_1d_2( nbpac, rdm_ice_1d(1:nbpac) , rdm_ice , jpi, jpj, npac(1:nbpac) )
406	CALL tab_2d_1d_2( nbpac, rdq_ice_1d(1:nbpac) , rdq_ice , jpi, jpj, npac(1:nbpac) )
407	CALL tab_2d_1d_2( nbpac, dvlbq_1d (1:nbpac) , zdvolif , jpi, jpj, npac(1:nbpac) )
408	CALL tab_2d_1d_2( nbpac, tfu_1d (1:nbpac) , tfu , jpi, jpj, npac(1:nbpac) )
409	!
410	CALL lim_thd_lac_2( 1 , nbpac ) ! lateral accretion routine.
411	!
412	! back to the geographic grid
413	CALL tab_1d_2d_2( nbpac, frld , npac(1:nbpac), frld_1d (1:nbpac) , jpi, jpj )
414	CALL tab_1d_2d_2( nbpac, hsnif , npac(1:nbpac), h_snow_1d (1:nbpac) , jpi, jpj )
415	CALL tab_1d_2d_2( nbpac, hicif , npac(1:nbpac), h_ice_1d (1:nbpac) , jpi, jpj )
416	CALL tab_1d_2d_2( nbpac, tbif(:,:,1), npac(1:nbpac), tbif_1d (1:nbpac , 1 ), jpi, jpj )
417	CALL tab_1d_2d_2( nbpac, tbif(:,:,2), npac(1:nbpac), tbif_1d (1:nbpac , 2 ), jpi, jpj )
418	CALL tab_1d_2d_2( nbpac, tbif(:,:,3), npac(1:nbpac), tbif_1d (1:nbpac , 3 ), jpi, jpj )
419	CALL tab_1d_2d_2( nbpac, qstoif , npac(1:nbpac), qstbif_1d (1:nbpac) , jpi, jpj )
420	CALL tab_1d_2d_2( nbpac, rdm_ice , npac(1:nbpac), rdm_ice_1d(1:nbpac) , jpi, jpj )
421	CALL tab_1d_2d_2( nbpac, rdq_ice , npac(1:nbpac), rdq_ice_1d(1:nbpac) , jpi, jpj )
422	CALL tab_1d_2d_2( nbpac, zdvolif , npac(1:nbpac), dvlbq_1d (1:nbpac) , jpi, jpj )
423	!
424	ENDIF
425
426
427	! Recover frld values between 0 and 1 in the Southern Hemisphere (tricky trick)
428	! Update daily thermodynamic ice production.
429	!------------------------------------------------------------------------------
430	!$OMP PARALLEL DO schedule(static) private(jj,ji)
431	DO jj = 1, jpj
432	DO ji = 1, jpi
433	frld (ji,jj) = MIN( frld(ji,jj), ABS( frld(ji,jj) - 2.0 ) )
434	fr_i (ji,jj) = 1.0 - frld(ji,jj)
435	hicifp(ji,jj) = hicif(ji,jj) * fr_i(ji,jj) - hicifp(ji,jj)
436	END DO
437	END DO
438
439	! Outputs
440	!--------------------------------------------------------------------------------
441	ztmp(:,:) = 1. - pfrld(:,:) ! fraction of ice after the dynamic, before the thermodynamic
442	IF( iom_use('ist_cea' ) ) CALL iom_put( 'ist_cea', (sist(:,:) - rt0) * ztmp(:,:) ) ! Ice surface temperature [Celius]
443	IF( iom_use('qsr_ai_cea' ) ) CALL iom_put( 'qsr_ai_cea', qsr_ice(:,:,1) * ztmp(:,:) ) ! Solar flux over the ice [W/m2]
444	IF( iom_use('qns_ai_cea' ) ) CALL iom_put( 'qns_ai_cea', qns_ice(:,:,1) * ztmp(:,:) ) ! Non-solar flux over the ice [W/m2]
445	IF( iom_use('qla_ai_cea' ) .AND. .NOT. ln_cpl ) &
446	& CALL iom_put( 'qla_ai_cea', qla_ice(:,:,1) * ztmp(:,:) ) ! Latent flux over the ice [W/m2]
447	!
448	IF( iom_use('snowthic_cea')) CALL iom_put( 'snowthic_cea', hsnif (:,:) * fr_i(:,:) ) ! Snow thickness [m]
449	IF( iom_use('icethic_cea' )) CALL iom_put( 'icethic_cea' , hicif (:,:) * fr_i(:,:) ) ! Ice thickness [m]
450	zztmp = 1.0 / rdt_ice
451	IF( iom_use('iceprod_cea') ) CALL iom_put( 'iceprod_cea' , hicifp (:,:) * zztmp ) ! Ice produced [m/s]
452	IF( iom_use('iiceconc' ) ) CALL iom_put( 'iiceconc' , fr_i(:,:) ) ! Ice concentration [-]
453	IF( iom_use('snowmel_cea') ) CALL iom_put( 'snowmel_cea' , rdm_snw(:,:) * zztmp ) ! Snow melt [kg/m2/s]
454	zztmp = rhoic / rdt_ice
455	IF( iom_use('sntoice_cea') ) CALL iom_put( 'sntoice_cea' , zdvonif(:,:) * zztmp ) ! Snow to Ice transformation [kg/m2/s]
456	IF( iom_use('ticemel_cea') ) CALL iom_put( 'ticemel_cea' , zdvosif(:,:) * zztmp ) ! Melt at Sea Ice top [kg/m2/s]
457	IF( iom_use('bicemel_cea') ) CALL iom_put( 'bicemel_cea' , zdvomif(:,:) * zztmp ) ! Melt at Sea Ice bottom [kg/m2/s]
458	IF( iom_use('licepro_cea') ) THEN
459	zlicegr(:,:) = MAX( 0.e0, rdm_ice(:,:)-zlicegr(:,:) )
460	CALL iom_put( 'licepro_cea' , zlicegr(:,:) * zztmp ) ! Lateral sea ice growth [kg/m2/s]
461	ENDIF
462	!
463	! Compute the Eastward & Northward sea-ice transport
464	IF( iom_use('u_imasstr') ) THEN
465	zztmp = 0.25 * rhoic
466	!$OMP PARALLEL DO schedule(static) private(jj,ji,zuice_m,zhice_u)
467	DO jj = 1, jpjm1
468	DO ji = 1, jpim1 ! NO vector opt.
469	! Ice velocities, volume & transport at U-points
470	zuice_m = u_ice(ji+1,jj+1) + u_ice(ji+1,jj )
471	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 )
472	zu_imasstr(ji,jj) = zztmp * zhice_u * zuice_m
473	END DO
474	END DO
475	CALL lbc_lnk( zu_imasstr, 'U', -1. )
476	CALL iom_put( 'u_imasstr', zu_imasstr(:,:) ) ! Ice transport along i-axis at U-point [kg/s]
477	ENDIF
478	IF( iom_use('v_imasstr') ) THEN
479	zztmp = 0.25 * rhoic
480	!$OMP PARALLEL DO schedule(static) private(jj,ji,zvice_m,zhice_v)
481	DO jj = 1, jpjm1
482	DO ji = 1, jpim1 ! NO vector opt.
483	! Ice velocities, volume & transport at V-points
484	zvice_m = v_ice(ji+1,jj+1) + v_ice(ji ,jj+1)
485	zhice_v = hicif(ji,jj)e1t(ji,jj)fr_i(ji,jj) + hicif(ji ,jj+1)e1t(ji ,jj+1)fr_i(ji ,jj+1)
486	zv_imasstr(ji,jj) = zztmp * zhice_v * zvice_m
487	END DO
488	END DO
489	CALL lbc_lnk( zv_imasstr, 'V', -1. )
490	CALL iom_put( 'v_imasstr', zv_imasstr(:,:) ) ! Ice transport along j-axis at V-point [kg/s]
491	ENDIF
492
493	!! Fram Strait sea-ice transport (sea-ice + snow) (in ORCA2 = 5 points)
494	IF( iom_use('fram_trans') .and. cp_cfg == "orca" .AND. jp_cfg == 2 ) THEN ! ORCA R2 configuration
495	!$OMP PARALLEL DO schedule(static) private(jj,ji,zrhoij,zrhoijm1,ztr_fram)
496	DO jj = mj0(137), mj1(137) ! B grid
497	IF( mj0(jj-1) >= nldj ) THEN
498	DO ji = MAX(mi0(134),nldi), MIN(mi1(138),nlei)
499	zrhoij = e1t(ji,jj ) * fr_i(ji,jj ) * ( rhoichicif(ji,jj ) + rhosnhsnif(ji,jj ) )
500	zrhoijm1 = e1t(ji,jj-1) * fr_i(ji,jj-1) * ( rhoichicif(ji,jj-1) + rhosnhsnif(ji,jj-1) )
501	ztr_fram = ztr_fram - 0.25 * ( v_ice(ji,jj)+ v_ice(ji+1,jj) ) * ( zrhoij + zrhoijm1 )
502	END DO
503	ENDIF
504	END DO
505	IF( lk_mpp ) CALL mpp_sum( ztr_fram )
506	CALL iom_put( 'fram_trans', ztr_fram ) ! Ice transport through Fram strait [kg/s]
507	ENDIF
508
509	IF( iom_use('ice_pres') .OR. iom_use('ist_ipa') .OR. iom_use('uice_ipa') .OR. iom_use('vice_ipa') ) THEN
510	!! ce ztmp(:,:) = 1. - AINT( frld(:,:), wp ) ! return 1 as soon as there is ice
511	!! ce A big warning because the model crashes on IDRIS/IBM SP6 with xlf 13.1.0.3, see ticket #761
512	!! ce We Unroll the loop and everything works fine
513	!$OMP PARALLEL DO schedule(static) private(jj,ji)
514	DO jj = 1, jpj
515	DO ji = 1, jpi
516	ztmp(ji,jj) = 1. - AINT( frld(ji,jj), wp ) ! return 1 as soon as there is ice
517	END DO
518	END DO
519	!
520	IF( iom_use('ice_pres') ) CALL iom_put( 'ice_pres', ztmp ) ! Ice presence [-]
521	IF( iom_use('ist_ipa' ) ) CALL iom_put( 'ist_ipa' , ( sist(:,:) - rt0 ) * ztmp(:,:) ) ! Ice surface temperature [Celius]
522	IF( iom_use('uice_ipa') ) CALL iom_put( 'uice_ipa', u_ice(:,:) * ztmp(:,:) ) ! Ice velocity along i-axis at I-point [m/s]
523	IF( iom_use('vice_ipa') ) CALL iom_put( 'vice_ipa', v_ice(:,:) * ztmp(:,:) ) ! Ice velocity along j-axis at I-point [m/s]
524	ENDIF
525
526	IF(ln_ctl) THEN
527	CALL prt_ctl_info(' lim_thd end ')
528	CALL prt_ctl( tab2d_1=hicif , clinfo1=' lim_thd: hicif : ', tab2d_2=hsnif , clinfo2=' hsnif : ' )
529	CALL prt_ctl( tab2d_1=frld , clinfo1=' lim_thd: frld : ', tab2d_2=hicifp, clinfo2=' hicifp : ' )
530	CALL prt_ctl( tab2d_1=phicif , clinfo1=' lim_thd: phicif : ', tab2d_2=pfrld , clinfo2=' pfrld : ' )
531	CALL prt_ctl( tab2d_1=sist , clinfo1=' lim_thd: sist : ' )
532	CALL prt_ctl( tab2d_1=tbif(:,:,1), clinfo1=' lim_thd: tbif 1 : ' )
533	CALL prt_ctl( tab2d_1=tbif(:,:,2), clinfo1=' lim_thd: tbif 2 : ' )
534	CALL prt_ctl( tab2d_1=tbif(:,:,3), clinfo1=' lim_thd: tbif 3 : ' )
535	CALL prt_ctl( tab2d_1=fdtcn , clinfo1=' lim_thd: fdtcn : ', tab2d_2=qdtcn , clinfo2=' qdtcn : ' )
536	CALL prt_ctl( tab2d_1=qstoif , clinfo1=' lim_thd: qstoif : ', tab2d_2=fsbbq , clinfo2=' fsbbq : ' )
537	ENDIF
538	!
539	CALL wrk_dealloc( jpi, jpj, ztmp, zqlbsbq, zlicegr, zdvosif, zdvobif, zdvolif, zdvonif, zdvomif, zu_imasstr, zv_imasstr )
540	CALL wrk_dealloc( jpi, jpj, jpk, zmsk )
541	!
542	END SUBROUTINE lim_thd_2
543
544
545	SUBROUTINE lim_thd_init_2
546	!!-------------------------------------------------------------------
547	!! * ROUTINE lim_thd_init_2 *
548	!!
549	!! ** Purpose : Physical constants and parameters linked to the ice
550	!! thermodynamics
551	!!
552	!! ** Method : Read the namicethd namelist and check the ice-thermo
553	!! parameter values called at the first timestep (nit000)
554	!!
555	!! ** input : Namelist namicether
556	!!-------------------------------------------------------------------
557	INTEGER :: ios ! Local integer output status for namelist read
558	NAMELIST/namicethd/ hmelt , hiccrit, hicmin, hiclim, amax , &
559	& swiqst, sbeta , parlat, hakspl, hibspl, exld, &
560	& hakdif, hnzst , thth , parsub, alphs
561	!!-------------------------------------------------------------------
562
563	REWIND( numnam_ice_ref ) ! Namelist namicethd in reference namelist : Ice thermodynamics
564	READ ( numnam_ice_ref, namicethd, IOSTAT = ios, ERR = 901)
565	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namicethd in reference namelist', lwp )
566
567	REWIND( numnam_ice_cfg ) ! Namelist namicethd in configuration namelist : Ice thermodynamics
568	READ ( numnam_ice_cfg, namicethd, IOSTAT = ios, ERR = 902 )
569	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namicethd in configuration namelist', lwp )
570	IF(lwm) WRITE ( numoni, namicethd )
571
572	IF( ln_cpl .AND. parsub /= 0.0 ) CALL ctl_stop( 'In coupled mode, use parsub = 0. or send dqla' )
573	!
574	IF(lwp) THEN ! control print
575	WRITE(numout,*)
576	WRITE(numout,*)'lim_thd_init_2: ice parameters for ice thermodynamic computation '
577	WRITE(numout,*)'~~~~~~~~~~~~~~'
578	WRITE(numout,*)' maximum melting at the bottom hmelt = ', hmelt
579	WRITE(numout,*)' ice thick. for lateral accretion in NH (SH) hiccrit(1/2) = ', hiccrit
580	WRITE(numout,*)' ice thick. corr. to max. energy stored in brine pocket hicmin = ', hicmin
581	WRITE(numout,*)' minimum ice thickness hiclim = ', hiclim
582	WRITE(numout,*)' maximum lead fraction amax = ', amax
583	WRITE(numout,*)' energy stored in brine pocket (=1) or not (=0) swiqst = ', swiqst
584	WRITE(numout,*)' numerical carac. of the scheme for diffusion in ice '
585	WRITE(numout,*)' Cranck-Nicholson (=0.5), implicit (=1), explicit (=0) sbeta = ', sbeta
586	WRITE(numout,*)' percentage of energy used for lateral ablation parlat = ', parlat
587	WRITE(numout,*)' slope of distr. for Hakkinen-Mellor lateral melting hakspl = ', hakspl
588	WRITE(numout,*)' slope of distribution for Hibler lateral melting hibspl = ', hibspl
589	WRITE(numout,*)' exponent for leads-closure rate exld = ', exld
590	WRITE(numout,*)' coefficient for diffusions of ice and snow hakdif = ', hakdif
591	WRITE(numout,*)' threshold thick. for comp. of eq. thermal conductivity zhth = ', thth
592	WRITE(numout,*)' thickness of the surf. layer in temp. computation hnzst = ', hnzst
593	WRITE(numout,*)' switch for snow sublimation (=1) or not (=0) parsub = ', parsub
594	WRITE(numout,*)' coefficient for snow density when snow ice formation alphs = ', alphs
595	ENDIF
596	!
597	uscomi = 1.0 / ( 1.0 - amax ) ! inverse of minimum lead fraction
598	rcdsn = hakdif * rcdsn
599	rcdic = hakdif * rcdic
600	!
601	IF( hsndif > 100.e0 .OR. hicdif > 100.e0 ) THEN
602	cnscg = 0.e0
603	ELSE
604	cnscg = rcpsn / rcpic ! ratio rcpsn/rcpic
605	ENDIF
606	!
607	END SUBROUTINE lim_thd_init_2
608
609	#else
610	!!----------------------------------------------------------------------
611	!! Default option Dummy module NO LIM 2.0 sea-ice model
612	!!----------------------------------------------------------------------
613	CONTAINS
614	SUBROUTINE lim_thd_2 ! Dummy routine
615	END SUBROUTINE lim_thd_2
616	#endif
617
618	!!======================================================================
619	END MODULE limthd_2

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