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limthd_2.F90 in branches/dev_r2586_dynamic_mem/NEMOGCM/NEMO/LIM_SRC_2 – NEMO

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source: branches/dev_r2586_dynamic_mem/NEMOGCM/NEMO/LIM_SRC_2/limthd_2.F90 @ 2633

Last change on this file since 2633 was 2633, checked in by trackstand2, 13 years ago
Renamed wrk_use => wrk_in_use and wrk_release => wrk_not_released
Property svn:keywords set to `Id`
File size: 33.6 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 iom ! IOM library
25	USE ice_2 ! LIM sea-ice variables
26	USE sbc_oce !
27	USE sbc_ice !
28	USE thd_ice_2 ! LIM thermodynamic sea-ice variables
29	USE dom_ice_2 ! LIM sea-ice domain
30	USE limthd_zdf_2
31	USE limthd_lac_2
32	USE limtab_2
33	USE prtctl ! Print control
34	USE cpl_oasis3, ONLY : lk_cpl
35	USE diaar5, ONLY : lk_diaar5
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
57	CONTAINS
58
59	SUBROUTINE lim_thd_2( kt )
60	!!-------------------------------------------------------------------
61	!! * ROUTINE lim_thd_2 *
62	!!
63	!! ** Purpose : This routine manages the ice thermodynamic.
64	!!
65	!! ** Action : - Initialisation of some variables
66	!! - Some preliminary computation (oceanic heat flux
67	!! at the ice base, snow acc.,heat budget of the leads)
68	!! - selection of the icy points and put them in an array
69	!! - call lim_vert_ther for vert ice thermodynamic
70	!! - back to the geographic grid
71	!! - selection of points for lateral accretion
72	!! - call lim_lat_acc for the ice accretion
73	!! - back to the geographic grid
74	!!
75	!! References : Goosse et al. 1996, Bul. Soc. Roy. Sc. Liege, 65, 87-90
76	!!---------------------------------------------------------------------
77	USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released
78	USE wrk_nemo, ONLY: ztmp => wrk_2d_1, & ! 2D workspace
79	zqlbsbq => wrk_2d_2, & ! link with lead energy budget qldif
80	zlicegr => wrk_2d_3 ! link with lateral ice growth
81	USE wrk_nemo, ONLY: zmsk => wrk_3d_4 ! 3D workspace
82	USE wrk_nemo, ONLY: zdvosif => wrk_2d_4, & !: Variation of volume at surface
83	zdvobif => wrk_2d_5, & !: Variation of ice volume at the bottom ice (outputs only)
84	zdvolif => wrk_2d_6, & !: Total variation of ice volume (outputs only)
85	zdvonif => wrk_2d_7, & !: Surface accretion Snow to Ice transformation (outputs only)
86	zdvomif => wrk_2d_8, & !: Bottom variation of ice volume due to melting (outputs only)
87	zu_imasstr =>wrk_2d_9, & !: Sea-ice transport along i-axis at U-point (outputs only)
88	zv_imasstr =>wrk_2d_10 !: Sea-ice transport along j-axis at V-point (outputs only)
89	!!
90	INTEGER, INTENT(in) :: kt ! number of iteration
91	!!
92	INTEGER :: ji, jj ! dummy loop indices
93	INTEGER :: nbpb ! nb of icy pts for thermo. cal.
94	INTEGER :: nbpac ! nb of pts for lateral accretion
95	CHARACTER (len=22) :: charout
96	REAL(wp) :: zfric_umin = 5e-03 ! lower bound for the friction velocity
97	REAL(wp) :: zfric_umax = 2e-02 ! upper bound for the friction velocity
98	REAL(wp) :: zinda ! switch for test. the val. of concen.
99	REAL(wp) :: zindb, zindg ! switches for test. the val of arg
100	REAL(wp) :: zfricp ! temporary scalar
101	REAL(wp) :: za , zh, zthsnice !
102	REAL(wp) :: zfric_u ! friction velocity
103	REAL(wp) :: zfnsol ! total non solar heat
104	REAL(wp) :: zfontn ! heat flux from snow thickness
105	REAL(wp) :: zfntlat, zpareff ! test. the val. of lead heat budget
106
107	REAL(wp) :: zuice_m, zvice_m ! Sea-ice velocities at U & V-points
108	REAL(wp) :: zhice_u, zhice_v ! Sea-ice volume at U & V-points
109	REAL(wp) :: ztr_fram ! Sea-ice transport through Fram strait
110	REAL(wp) :: zrhoij, zrhoijm1 ! temporary scalars
111	REAL(wp) :: zztmp ! temporary scalars within a loop
112	!!$ REAL(wp), DIMENSION(jpi,jpj) :: firic !: IR flux over the ice (outputs only)
113	!!$ REAL(wp), DIMENSION(jpi,jpj) :: fcsic !: Sensible heat flux over the ice (outputs only)
114	!!$ REAL(wp), DIMENSION(jpi,jpj) :: fleic !: Latent heat flux over the ice (outputs only)
115	!!$ REAL(wp), DIMENSION(jpi,jpj) :: qlatic !: latent flux (outputs only)
116	!!-------------------------------------------------------------------
117
118	IF( wrk_in_use(2, 1,2,3,4,5,6,7,8,9,10) .OR. &
119	wrk_in_use(3, 4) ) THEN
120	CALL ctl_stop('lim_thd_2 : requested workspace arrays unavailable')
121	RETURN
122	END IF
123
124	IF( kt == nit000 ) CALL lim_thd_init_2 ! Initialization (first time-step only)
125
126	!-------------------------------------------!
127	! Initilization of diagnostic variables !
128	!-------------------------------------------!
129
130	!!gm needed? yes at least for some of these arrays
131	zdvosif(:,:) = 0.e0 ! variation of ice volume at surface
132	zdvobif(:,:) = 0.e0 ! variation of ice volume at bottom
133	zdvolif(:,:) = 0.e0 ! total variation of ice volume
134	zdvonif(:,:) = 0.e0 ! transformation of snow to sea-ice volume
135	! zdvonif(:,:) = 0.e0 ! lateral variation of ice volume
136	zlicegr(:,:) = 0.e0 ! lateral variation of ice volume
137	zdvomif(:,:) = 0.e0 ! variation of ice volume at bottom due to melting only
138	ztr_fram = 0.e0 ! sea-ice transport through Fram strait
139	fstric (:,:) = 0.e0 ! part of solar radiation absorbing inside the ice
140	fscmbq (:,:) = 0.e0 ! linked with fstric
141	ffltbif(:,:) = 0.e0 ! linked with fstric
142	qfvbq (:,:) = 0.e0 ! linked with fstric
143	rdmsnif(:,:) = 0.e0 ! variation of snow mass per unit area
144	rdmicif(:,:) = 0.e0 ! variation of ice mass per unit area
145	zmsk (:,:,:) = 0.e0
146
147	! set to zero snow thickness smaller than epsi04
148	DO jj = 1, jpj
149	DO ji = 1, jpi
150	hsnif(ji,jj) = hsnif(ji,jj) * MAX( rzero, SIGN( rone , hsnif(ji,jj) - epsi04 ) )
151	END DO
152	END DO
153	!!gm better coded (do not use SIGN...)
154	! WHERE( hsnif(:,:) < epsi04 ) hsnif(:,:) = 0.e0
155	!!gm
156
157	IF(ln_ctl) CALL prt_ctl( tab2d_1=hsnif, clinfo1=' lim_thd: hsnif : ' )
158
159	!-----------------------------------!
160	! Treatment of particular cases !
161	!-----------------------------------!
162
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	sst_m(:,:) = sst_m(:,:) + rt0
206
207	!CDIR NOVERRCHK
208	DO jj = 1, jpj
209	!CDIR NOVERRCHK
210	DO ji = 1, jpi
211	zthsnice = hsnif(ji,jj) + hicif(ji,jj)
212	zindb = tms(ji,jj) * ( 1.0 - MAX( rzero , SIGN( rone , - zthsnice ) ) )
213	pfrld(ji,jj) = frld(ji,jj)
214	zfricp = 1.0 - frld(ji,jj)
215	zinda = 1.0 - MAX( rzero , SIGN( rone , - zfricp ) )
216
217	! solar irradiance transmission at the mixed layer bottom and used in the lead heat budget
218	thcm(ji,jj) = 0.e0
219
220	! net downward heat flux from the ice to the ocean, expressed as a function of ocean
221	! temperature and turbulent mixing (McPhee, 1992)
222	zfric_u = MAX ( MIN( SQRT( ust2s(ji,jj) ) , zfric_umax ) , zfric_umin ) ! friction velocity
223	fdtcn(ji,jj) = zindb * rau0 * rcp * 0.006 * zfric_u * ( sst_m(ji,jj) - tfu(ji,jj) )
224	qdtcn(ji,jj) = zindb * fdtcn(ji,jj) * frld(ji,jj) * rdt_ice
225
226	! partial computation of the lead energy budget (qldif)
227	#if defined key_coupled
228	qldif(ji,jj) = tms(ji,jj) * rdt_ice &
229	& * ( ( qsr_tot(ji,jj) - qsr_ice(ji,jj,1) * zfricp ) * ( 1.0 - thcm(ji,jj) ) &
230	& + ( qns_tot(ji,jj) - qns_ice(ji,jj,1) * zfricp ) &
231	& + frld(ji,jj) * ( fdtcn(ji,jj) + ( 1.0 - zindb ) * fsbbq(ji,jj) ) )
232	#else
233	zfontn = ( sprecip(ji,jj) / rhosn ) * xlsn ! energy for melting solid precipitation
234	zfnsol = qns(ji,jj) ! total non solar flux over the ocean
235	qldif(ji,jj) = tms(ji,jj) * ( qsr(ji,jj) * ( 1.0 - thcm(ji,jj) ) &
236	& + zfnsol + fdtcn(ji,jj) - zfontn &
237	& + ( 1.0 - zindb ) * fsbbq(ji,jj) ) &
238	& * frld(ji,jj) * rdt_ice
239	!!$ qldif(ji,jj) = tms(ji,jj) * rdt_ice * frld(ji,jj)
240	!!$ & * ( qsr(ji,jj) * ( 1.0 - thcm(ji,jj) ) &
241	!!$ & + qns(ji,jj) + fdtcn(ji,jj) - zfontn &
242	!!$ & + ( 1.0 - zindb ) * fsbbq(ji,jj) ) &
243	#endif
244	! parlat : percentage of energy used for lateral ablation (0.0)
245	zfntlat = 1.0 - MAX( rzero , SIGN( rone , - qldif(ji,jj) ) )
246	zpareff = 1.0 + ( parlat - 1.0 ) * zinda * zfntlat
247	zqlbsbq(ji,jj) = qldif(ji,jj) * ( 1.0 - zpareff ) / MAX( (1.0 - frld(ji,jj)) * rdt_ice , epsi16 )
248	qldif (ji,jj) = zpareff * qldif(ji,jj)
249	qdtcn (ji,jj) = zpareff * qdtcn(ji,jj)
250
251	! energy needed to bring ocean surface layer until its freezing
252	qcmif (ji,jj) = rau0 * rcp * fse3t_m(ji,jj,1) &
253	& * ( tfu(ji,jj) - sst_m(ji,jj) ) * ( 1 - zinda )
254
255	! calculate oceanic heat flux.
256	fbif (ji,jj) = zindb * ( fsbbq(ji,jj) / MAX( (1.0 - frld(ji,jj)) , epsi20 ) + fdtcn(ji,jj) )
257
258	! computation of the thermodynamic ice production (only needed for output)
259	hicifp(ji,jj) = hicif(ji,jj) * ( 1.0 - frld(ji,jj) )
260	END DO
261	END DO
262
263	sst_m(:,:) = sst_m(:,:) - rt0
264
265	! Select icy points and fulfill arrays for the vectorial grid.
266	!----------------------------------------------------------------------
267	nbpb = 0
268	DO jj = 1, jpj
269	DO ji = 1, jpi
270	IF ( frld(ji,jj) < 1.0 ) THEN
271	nbpb = nbpb + 1
272	npb(nbpb) = (jj - 1) * jpi + ji
273	ENDIF
274	END DO
275	END DO
276
277	IF(ln_ctl) THEN
278	CALL prt_ctl(tab2d_1=pfrld, clinfo1=' lim_thd: pfrld : ', tab2d_2=thcm , clinfo2=' thcm : ')
279	CALL prt_ctl(tab2d_1=fdtcn, clinfo1=' lim_thd: fdtcn : ', tab2d_2=qdtcn , clinfo2=' qdtcn : ')
280	CALL prt_ctl(tab2d_1=qldif, clinfo1=' lim_thd: qldif : ', tab2d_2=zqlbsbq, clinfo2=' zqlbsbq : ')
281	CALL prt_ctl(tab2d_1=qcmif, clinfo1=' lim_thd: qcmif : ', tab2d_2=fbif , clinfo2=' fbif : ')
282	zmsk(:,:,1) = tms(:,:)
283	CALL prt_ctl(tab2d_1=qcmif , clinfo1=' lim_thd: qcmif : ', mask1=zmsk)
284	CALL prt_ctl(tab2d_1=hicifp, clinfo1=' lim_thd: hicifp : ')
285	WRITE(charout, FMT="('lim_thd: nbpb = ',I4)") nbpb
286	CALL prt_ctl_info(charout)
287	ENDIF
288
289
290	! If there is no ice, do nothing. Otherwise, compute Top and Bottom accretion/ablation
291	!------------------------------------------------------------------------------------
292
293	IF( nbpb > 0 ) THEN
294	!
295	! put the variable in a 1-D array for thermodynamics process
296	CALL tab_2d_1d_2( nbpb, frld_1d (1:nbpb) , frld , jpi, jpj, npb(1:nbpb) )
297	CALL tab_2d_1d_2( nbpb, h_ice_1d (1:nbpb) , hicif , jpi, jpj, npb(1:nbpb) )
298	CALL tab_2d_1d_2( nbpb, h_snow_1d (1:nbpb) , hsnif , jpi, jpj, npb(1:nbpb) )
299	CALL tab_2d_1d_2( nbpb, sist_1d (1:nbpb) , sist , jpi, jpj, npb(1:nbpb) )
300	CALL tab_2d_1d_2( nbpb, tbif_1d (1:nbpb , 1 ), tbif(:,:,1) , jpi, jpj, npb(1:nbpb) )
301	CALL tab_2d_1d_2( nbpb, tbif_1d (1:nbpb , 2 ), tbif(:,:,2) , jpi, jpj, npb(1:nbpb) )
302	CALL tab_2d_1d_2( nbpb, tbif_1d (1:nbpb , 3 ), tbif(:,:,3) , jpi, jpj, npb(1:nbpb) )
303	CALL tab_2d_1d_2( nbpb, qsr_ice_1d (1:nbpb) , qsr_ice(:,:,1) , jpi, jpj, npb(1:nbpb) )
304	CALL tab_2d_1d_2( nbpb, fr1_i0_1d (1:nbpb) , fr1_i0 , jpi, jpj, npb(1:nbpb) )
305	CALL tab_2d_1d_2( nbpb, fr2_i0_1d (1:nbpb) , fr2_i0 , jpi, jpj, npb(1:nbpb) )
306	CALL tab_2d_1d_2( nbpb, qns_ice_1d(1:nbpb) , qns_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
307	CALL tab_2d_1d_2( nbpb, dqns_ice_1d(1:nbpb) , dqns_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
308	IF( .NOT. lk_cpl ) THEN
309	CALL tab_2d_1d_2( nbpb, qla_ice_1d (1:nbpb) , qla_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
310	CALL tab_2d_1d_2( nbpb, dqla_ice_1d(1:nbpb) , dqla_ice(:,:,1), jpi, jpj, npb(1:nbpb) )
311	ENDIF
312	CALL tab_2d_1d_2( nbpb, tfu_1d (1:nbpb) , tfu , jpi, jpj, npb(1:nbpb) )
313	CALL tab_2d_1d_2( nbpb, sprecip_1d (1:nbpb) , sprecip , jpi, jpj, npb(1:nbpb) )
314	CALL tab_2d_1d_2( nbpb, fbif_1d (1:nbpb) , fbif , jpi, jpj, npb(1:nbpb) )
315	CALL tab_2d_1d_2( nbpb, thcm_1d (1:nbpb) , thcm , jpi, jpj, npb(1:nbpb) )
316	CALL tab_2d_1d_2( nbpb, qldif_1d (1:nbpb) , qldif , jpi, jpj, npb(1:nbpb) )
317	CALL tab_2d_1d_2( nbpb, qstbif_1d (1:nbpb) , qstoif , jpi, jpj, npb(1:nbpb) )
318	CALL tab_2d_1d_2( nbpb, rdmicif_1d (1:nbpb) , rdmicif , jpi, jpj, npb(1:nbpb) )
319	CALL tab_2d_1d_2( nbpb, dmgwi_1d (1:nbpb) , dmgwi , jpi, jpj, npb(1:nbpb) )
320	CALL tab_2d_1d_2( nbpb, qlbbq_1d (1:nbpb) , zqlbsbq , jpi, jpj, npb(1:nbpb) )
321	!
322	CALL lim_thd_zdf_2( 1, nbpb ) ! compute ice growth
323	!
324	! back to the geographic grid.
325	CALL tab_1d_2d_2( nbpb, frld , npb, frld_1d (1:nbpb) , jpi, jpj )
326	CALL tab_1d_2d_2( nbpb, hicif , npb, h_ice_1d (1:nbpb) , jpi, jpj )
327	CALL tab_1d_2d_2( nbpb, hsnif , npb, h_snow_1d (1:nbpb) , jpi, jpj )
328	CALL tab_1d_2d_2( nbpb, sist , npb, sist_1d (1:nbpb) , jpi, jpj )
329	CALL tab_1d_2d_2( nbpb, tbif(:,:,1), npb, tbif_1d (1:nbpb , 1 ), jpi, jpj )
330	CALL tab_1d_2d_2( nbpb, tbif(:,:,2), npb, tbif_1d (1:nbpb , 2 ), jpi, jpj )
331	CALL tab_1d_2d_2( nbpb, tbif(:,:,3), npb, tbif_1d (1:nbpb , 3 ), jpi, jpj )
332	CALL tab_1d_2d_2( nbpb, fscmbq , npb, fscbq_1d (1:nbpb) , jpi, jpj )
333	CALL tab_1d_2d_2( nbpb, ffltbif , npb, fltbif_1d (1:nbpb) , jpi, jpj )
334	CALL tab_1d_2d_2( nbpb, fstric , npb, fstbif_1d (1:nbpb) , jpi, jpj )
335	CALL tab_1d_2d_2( nbpb, qldif , npb, qldif_1d (1:nbpb) , jpi, jpj )
336	CALL tab_1d_2d_2( nbpb, qfvbq , npb, qfvbq_1d (1:nbpb) , jpi, jpj )
337	CALL tab_1d_2d_2( nbpb, qstoif , npb, qstbif_1d (1:nbpb) , jpi, jpj )
338	CALL tab_1d_2d_2( nbpb, rdmicif , npb, rdmicif_1d(1:nbpb) , jpi, jpj )
339	CALL tab_1d_2d_2( nbpb, dmgwi , npb, dmgwi_1d (1:nbpb) , jpi, jpj )
340	CALL tab_1d_2d_2( nbpb, rdmsnif , npb, rdmsnif_1d(1:nbpb) , jpi, jpj )
341	CALL tab_1d_2d_2( nbpb, zdvosif , npb, dvsbq_1d (1:nbpb) , jpi, jpj )
342	CALL tab_1d_2d_2( nbpb, zdvobif , npb, dvbbq_1d (1:nbpb) , jpi, jpj )
343	CALL tab_1d_2d_2( nbpb, zdvomif , npb, rdvomif_1d(1:nbpb) , jpi, jpj )
344	CALL tab_1d_2d_2( nbpb, zdvolif , npb, dvlbq_1d (1:nbpb) , jpi, jpj )
345	CALL tab_1d_2d_2( nbpb, zdvonif , npb, dvnbq_1d (1:nbpb) , jpi, jpj )
346	CALL tab_1d_2d_2( nbpb, qsr_ice(:,:,1), npb, qsr_ice_1d(1:nbpb) , jpi, jpj )
347	CALL tab_1d_2d_2( nbpb, qns_ice(:,:,1), npb, qns_ice_1d(1:nbpb) , jpi, jpj )
348	IF( .NOT. lk_cpl ) CALL tab_1d_2d_2( nbpb, qla_ice(:,:,1), npb, qla_ice_1d(1:nbpb) , jpi, jpj )
349	!
350	ENDIF
351
352	! Up-date sea ice thickness
353	!--------------------------
354	DO jj = 1, jpj
355	DO ji = 1, jpi
356	phicif(ji,jj) = hicif(ji,jj)
357	hicif(ji,jj) = hicif(ji,jj) * ( rone - MAX( rzero, SIGN( rone, - ( 1.0 - frld(ji,jj) ) ) ) )
358	END DO
359	END DO
360
361
362	! Tricky trick : add 2 to frld in the Southern Hemisphere
363	!--------------------------------------------------------
364	IF( fcor(1,1) < 0.e0 ) THEN
365	DO jj = 1, njeqm1
366	DO ji = 1, jpi
367	frld(ji,jj) = frld(ji,jj) + 2.0
368	END DO
369	END DO
370	ENDIF
371
372	CALL lbc_lnk( frld , 'T', 1. )
373
374	! Select points for lateral accretion (this occurs when heat exchange
375	! between ice and ocean is negative; ocean losing heat)
376	!-----------------------------------------------------------------
377	nbpac = 0
378	DO jj = 1, jpj
379	DO ji = 1, jpi
380	!i yes! IF ( ( qcmif(ji,jj) - qldif(ji,jj) ) > 0.e0 ) THEN
381	IF ( tms(ji,jj) * ( qcmif(ji,jj) - qldif(ji,jj) ) > 0.e0 ) THEN
382	nbpac = nbpac + 1
383	npac( nbpac ) = (jj - 1) * jpi + ji
384	ENDIF
385	END DO
386	END DO
387
388	IF(ln_ctl) THEN
389	CALL prt_ctl(tab2d_1=phicif, clinfo1=' lim_thd: phicif : ', tab2d_2=hicif, clinfo2=' hicif : ')
390	WRITE(charout, FMT="('lim_thd: nbpac = ',I4)") nbpac
391	CALL prt_ctl_info(charout)
392	ENDIF
393
394
395	! If ocean gains heat do nothing ; otherwise, one performs lateral accretion
396	!--------------------------------------------------------------------------------
397	IF( nbpac > 0 ) THEN
398	!
399	zlicegr(:,:) = rdmicif(:,:) ! to output the lateral sea-ice growth
400	!...Put the variable in a 1-D array for lateral accretion
401	CALL tab_2d_1d_2( nbpac, frld_1d (1:nbpac) , frld , jpi, jpj, npac(1:nbpac) )
402	CALL tab_2d_1d_2( nbpac, h_snow_1d (1:nbpac) , hsnif , jpi, jpj, npac(1:nbpac) )
403	CALL tab_2d_1d_2( nbpac, h_ice_1d (1:nbpac) , hicif , jpi, jpj, npac(1:nbpac) )
404	CALL tab_2d_1d_2( nbpac, tbif_1d (1:nbpac , 1 ), tbif(:,:,1), jpi, jpj, npac(1:nbpac) )
405	CALL tab_2d_1d_2( nbpac, tbif_1d (1:nbpac , 2 ), tbif(:,:,2), jpi, jpj, npac(1:nbpac) )
406	CALL tab_2d_1d_2( nbpac, tbif_1d (1:nbpac , 3 ), tbif(:,:,3), jpi, jpj, npac(1:nbpac) )
407	CALL tab_2d_1d_2( nbpac, qldif_1d (1:nbpac) , qldif , jpi, jpj, npac(1:nbpac) )
408	CALL tab_2d_1d_2( nbpac, qcmif_1d (1:nbpac) , qcmif , jpi, jpj, npac(1:nbpac) )
409	CALL tab_2d_1d_2( nbpac, qstbif_1d (1:nbpac) , qstoif , jpi, jpj, npac(1:nbpac) )
410	CALL tab_2d_1d_2( nbpac, rdmicif_1d(1:nbpac) , rdmicif , jpi, jpj, npac(1:nbpac) )
411	CALL tab_2d_1d_2( nbpac, dvlbq_1d (1:nbpac) , zdvolif , jpi, jpj, npac(1:nbpac) )
412	CALL tab_2d_1d_2( nbpac, tfu_1d (1:nbpac) , tfu , jpi, jpj, npac(1:nbpac) )
413	!
414	CALL lim_thd_lac_2( 1 , nbpac ) ! lateral accretion routine.
415	!
416	! back to the geographic grid
417	CALL tab_1d_2d_2( nbpac, frld , npac(1:nbpac), frld_1d (1:nbpac) , jpi, jpj )
418	CALL tab_1d_2d_2( nbpac, hsnif , npac(1:nbpac), h_snow_1d (1:nbpac) , jpi, jpj )
419	CALL tab_1d_2d_2( nbpac, hicif , npac(1:nbpac), h_ice_1d (1:nbpac) , jpi, jpj )
420	CALL tab_1d_2d_2( nbpac, tbif(:,:,1), npac(1:nbpac), tbif_1d (1:nbpac , 1 ), jpi, jpj )
421	CALL tab_1d_2d_2( nbpac, tbif(:,:,2), npac(1:nbpac), tbif_1d (1:nbpac , 2 ), jpi, jpj )
422	CALL tab_1d_2d_2( nbpac, tbif(:,:,3), npac(1:nbpac), tbif_1d (1:nbpac , 3 ), jpi, jpj )
423	CALL tab_1d_2d_2( nbpac, qstoif , npac(1:nbpac), qstbif_1d (1:nbpac) , jpi, jpj )
424	CALL tab_1d_2d_2( nbpac, rdmicif , npac(1:nbpac), rdmicif_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	CALL iom_put( 'ioceflxb', fbif ) ! Oceanic flux at the ice base [W/m2 ???]
445	CALL iom_put( 'ist_cea', (sist(:,:) - rt0) * ztmp(:,:) ) ! Ice surface temperature [Celius]
446	CALL iom_put( 'qsr_ai_cea', qsr_ice(:,:,1) * ztmp(:,:) ) ! Solar flux over the ice [W/m2]
447	CALL iom_put( 'qns_ai_cea', qns_ice(:,:,1) * ztmp(:,:) ) ! Non-solar flux over the ice [W/m2]
448	IF( .NOT. lk_cpl ) CALL iom_put( 'qla_ai_cea', qla_ice(:,:,1) * ztmp(:,:) ) ! Latent flux over the ice [W/m2]
449	!
450	CALL iom_put( 'snowthic_cea', hsnif (:,:) * fr_i(:,:) ) ! Snow thickness [m]
451	CALL iom_put( 'icethic_cea' , hicif (:,:) * fr_i(:,:) ) ! Ice thickness [m]
452	zztmp = 1.0 / rdt_ice
453	CALL iom_put( 'iceprod_cea' , hicifp (:,:) * zztmp ) ! Ice produced [m/s]
454	IF( lk_diaar5 ) THEN
455	CALL iom_put( 'snowmel_cea' , rdmsnif(:,:) * zztmp ) ! Snow melt [kg/m2/s]
456	zztmp = rhoic / rdt_ice
457	CALL iom_put( 'sntoice_cea' , zdvonif(:,:) * zztmp ) ! Snow to Ice transformation [kg/m2/s]
458	CALL iom_put( 'ticemel_cea' , zdvosif(:,:) * zztmp ) ! Melt at Sea Ice top [kg/m2/s]
459	CALL iom_put( 'bicemel_cea' , zdvomif(:,:) * zztmp ) ! Melt at Sea Ice bottom [kg/m2/s]
460	zlicegr(:,:) = MAX( 0.e0, rdmicif(:,:)-zlicegr(:,:) )
461	CALL iom_put( 'licepro_cea' , zlicegr(:,:) * zztmp ) ! Latereal sea ice growth [kg/m2/s]
462	ENDIF
463	!
464	! Compute the Eastward & Northward sea-ice transport
465	zztmp = 0.25 * rhoic
466	DO jj = 1, jpjm1
467	DO ji = 1, jpim1 ! NO vector opt.
468	! Ice velocities, volume & transport at U & V-points
469	zuice_m = u_ice(ji+1,jj+1) + u_ice(ji+1,jj )
470	zvice_m = v_ice(ji+1,jj+1) + v_ice(ji ,jj+1)
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	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)
473	zu_imasstr(ji,jj) = zztmp * zhice_u * zuice_m
474	zv_imasstr(ji,jj) = zztmp * zhice_v * zvice_m
475	END DO
476	END DO
477	CALL lbc_lnk( zu_imasstr, 'U', -1. ) ; CALL lbc_lnk( zv_imasstr, 'V', -1. )
478	CALL iom_put( 'u_imasstr', zu_imasstr(:,:) ) ! Ice transport along i-axis at U-point [kg/s]
479	CALL iom_put( 'v_imasstr', zv_imasstr(:,:) ) ! Ice transport along j-axis at V-point [kg/s]
480
481	!! Fram Strait sea-ice transport (sea-ice + snow) (in ORCA2 = 5 points)
482	IF( cp_cfg == "orca" .AND. jp_cfg == 2 ) THEN ! ORCA R2 configuration
483	DO jj = mj0(137), mj1(137) ! B grid
484	IF( mj0(jj-1) >= nldj ) THEN
485	DO ji = MAX(mi0(134),nldi), MIN(mi1(138),nlei)
486	zrhoij = e1t(ji,jj ) * fr_i(ji,jj ) * ( rhoichicif(ji,jj ) + rhosnhsnif(ji,jj ) )
487	zrhoijm1 = e1t(ji,jj-1) * fr_i(ji,jj-1) * ( rhoichicif(ji,jj-1) + rhosnhsnif(ji,jj-1) )
488	ztr_fram = ztr_fram - 0.25 * ( v_ice(ji,jj)+ v_ice(ji+1,jj) ) * ( zrhoij + zrhoijm1 )
489	END DO
490	ENDIF
491	END DO
492	IF( lk_mpp ) CALL mpp_sum( ztr_fram )
493	CALL iom_put( 'fram_trans', ztr_fram ) ! Ice transport through Fram strait [kg/s]
494	ENDIF
495
496	!! ce ztmp(:,:) = 1. - AINT( frld(:,:), wp ) ! return 1 as soon as there is ice
497	!! ce A big warning because the model crashes on IDRIS/IBM SP6 with xlf 13.1.0.3, see ticket #761
498	!! ce We Unroll the loop and everything works fine
499	DO jj = 1, jpj
500	DO ji = 1, jpi
501	ztmp(ji,jj) = 1. - AINT( frld(ji,jj), wp ) ! return 1 as soon as there is ice
502	END DO
503	END DO
504	!
505	CALL iom_put( 'ice_pres' , ztmp ) ! Ice presence [-]
506	CALL iom_put( 'ist_ipa' , ( sist(:,:) - rt0 ) * ztmp(:,:) ) ! Ice surface temperature [Celius]
507	CALL iom_put( 'uice_ipa' , u_ice(:,:) * ztmp(:,:) ) ! Ice velocity along i-axis at I-point [m/s]
508	CALL iom_put( 'vice_ipa' , v_ice(:,:) * ztmp(:,:) ) ! Ice velocity along j-axis at I-point [m/s]
509
510	IF(ln_ctl) THEN
511	CALL prt_ctl_info(' lim_thd end ')
512	CALL prt_ctl( tab2d_1=hicif , clinfo1=' lim_thd: hicif : ', tab2d_2=hsnif , clinfo2=' hsnif : ' )
513	CALL prt_ctl( tab2d_1=frld , clinfo1=' lim_thd: frld : ', tab2d_2=hicifp, clinfo2=' hicifp : ' )
514	CALL prt_ctl( tab2d_1=phicif , clinfo1=' lim_thd: phicif : ', tab2d_2=pfrld , clinfo2=' pfrld : ' )
515	CALL prt_ctl( tab2d_1=sist , clinfo1=' lim_thd: sist : ' )
516	CALL prt_ctl( tab2d_1=tbif(:,:,1), clinfo1=' lim_thd: tbif 1 : ' )
517	CALL prt_ctl( tab2d_1=tbif(:,:,2), clinfo1=' lim_thd: tbif 2 : ' )
518	CALL prt_ctl( tab2d_1=tbif(:,:,3), clinfo1=' lim_thd: tbif 3 : ' )
519	CALL prt_ctl( tab2d_1=fdtcn , clinfo1=' lim_thd: fdtcn : ', tab2d_2=qdtcn , clinfo2=' qdtcn : ' )
520	CALL prt_ctl( tab2d_1=qstoif , clinfo1=' lim_thd: qstoif : ', tab2d_2=fsbbq , clinfo2=' fsbbq : ' )
521	ENDIF
522	!
523	IF( wrk_not_released(2, 1,2,3,4,5,6,7,8,9,10) .OR. &
524	wrk_not_released(3, 4) ) THEN
525	CALL ctl_stop('lim_thd_2 : failed to release workspace arrays')
526	END IF
527	!
528	END SUBROUTINE lim_thd_2
529
530
531	SUBROUTINE lim_thd_init_2
532	!!-------------------------------------------------------------------
533	!! * ROUTINE lim_thd_init_2 *
534	!!
535	!! ** Purpose : Physical constants and parameters linked to the ice
536	!! thermodynamics
537	!!
538	!! ** Method : Read the namicethd namelist and check the ice-thermo
539	!! parameter values called at the first timestep (nit000)
540	!!
541	!! ** input : Namelist namicether
542	!!-------------------------------------------------------------------
543	NAMELIST/namicethd/ hmelt , hiccrit, hicmin, hiclim, amax , &
544	& swiqst, sbeta , parlat, hakspl, hibspl, exld, &
545	& hakdif, hnzst , thth , parsub, alphs
546	!!-------------------------------------------------------------------
547	!
548	REWIND( numnam_ice ) ! read namelist
549	READ ( numnam_ice , namicethd )
550	IF( lk_cpl .AND. parsub /= 0.0 ) CALL ctl_stop( 'In coupled mode, use parsub = 0. or send dqla' )
551	!
552	IF(lwp) THEN ! control print
553	WRITE(numout,*)
554	WRITE(numout,*)'lim_thd_init_2: ice parameters for ice thermodynamic computation '
555	WRITE(numout,*)'~~~~~~~~~~~~~~'
556	WRITE(numout,*)' maximum melting at the bottom hmelt = ', hmelt
557	WRITE(numout,*)' ice thick. for lateral accretion in NH (SH) hiccrit(1/2) = ', hiccrit
558	WRITE(numout,*)' ice thick. corr. to max. energy stored in brine pocket hicmin = ', hicmin
559	WRITE(numout,*)' minimum ice thickness hiclim = ', hiclim
560	WRITE(numout,*)' maximum lead fraction amax = ', amax
561	WRITE(numout,*)' energy stored in brine pocket (=1) or not (=0) swiqst = ', swiqst
562	WRITE(numout,*)' numerical carac. of the scheme for diffusion in ice '
563	WRITE(numout,*)' Cranck-Nicholson (=0.5), implicit (=1), explicit (=0) sbeta = ', sbeta
564	WRITE(numout,*)' percentage of energy used for lateral ablation parlat = ', parlat
565	WRITE(numout,*)' slope of distr. for Hakkinen-Mellor lateral melting hakspl = ', hakspl
566	WRITE(numout,*)' slope of distribution for Hibler lateral melting hibspl = ', hibspl
567	WRITE(numout,*)' exponent for leads-closure rate exld = ', exld
568	WRITE(numout,*)' coefficient for diffusions of ice and snow hakdif = ', hakdif
569	WRITE(numout,*)' threshold thick. for comp. of eq. thermal conductivity zhth = ', thth
570	WRITE(numout,*)' thickness of the surf. layer in temp. computation hnzst = ', hnzst
571	WRITE(numout,*)' switch for snow sublimation (=1) or not (=0) parsub = ', parsub
572	WRITE(numout,*)' coefficient for snow density when snow ice formation alphs = ', alphs
573	ENDIF
574	!
575	uscomi = 1.0 / ( 1.0 - amax ) ! inverse of minimum lead fraction
576	rcdsn = hakdif * rcdsn
577	rcdic = hakdif * rcdic
578	!
579	IF( hsndif > 100.e0 .OR. hicdif > 100.e0 ) THEN
580	cnscg = 0.e0
581	ELSE
582	cnscg = rcpsn / rcpic ! ratio rcpsn/rcpic
583	ENDIF
584	!
585	END SUBROUTINE lim_thd_init_2
586
587	#else
588	!!----------------------------------------------------------------------
589	!! Default option Dummy module NO LIM 2.0 sea-ice model
590	!!----------------------------------------------------------------------
591	CONTAINS
592	SUBROUTINE lim_thd_2 ! Dummy routine
593	END SUBROUTINE lim_thd_2
594	#endif
595
596	!!======================================================================
597	END MODULE limthd_2

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