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limthd.F90 in trunk/NEMO/LIM_SRC – NEMO

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source: trunk/NEMO/LIM_SRC/limthd.F90 @ 70

Last change on this file since 70 was 70, checked in by opalod, 20 years ago
CT : BUGFIX044 : Remove the hard coded vertical lenght dz in limmsh.F90 and use fse3t(:,:,1) in limthd.F90
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 23.7 KB

Line
1	MODULE limthd
2	!!======================================================================
3	!! * MODULE limthd *
4	!! LIM thermo ice model : ice thermodynamic
5	!!======================================================================
6	#if defined key_ice_lim
7	!!----------------------------------------------------------------------
8	!! 'key_ice_lim' : LIM sea-ice model
9	!!----------------------------------------------------------------------
10	!! lim_thd : thermodynamic of sea ice
11	!! lim_thd_init : initialisation of sea-ice thermodynamic
12	!!----------------------------------------------------------------------
13	!! * Modules used
14	USE phycst ! physical constants
15	USE dom_oce ! ocean space and time domain variables
16	USE lbclnk
17	USE in_out_manager ! I/O manager
18	USE ice ! LIM sea-ice variables
19	USE ice_oce ! sea-ice/ocean variables
20	USE flx_oce ! sea-ice/ocean forcings variables
21	USE thd_ice ! LIM thermodynamic sea-ice variables
22	USE dom_ice ! LIM sea-ice domain
23	USE iceini
24	USE limthd_zdf
25	USE limthd_lac
26	USE limtab
27
28	IMPLICIT NONE
29	PRIVATE
30
31	!! * Routine accessibility
32	PUBLIC lim_thd ! called by lim_step
33
34	!! * Module variables
35	REAL(wp) :: & ! constant values
36	epsi20 = 1.e-20 , &
37	epsi16 = 1.e-16 , &
38	epsi04 = 1.e-04 , &
39	zzero = 0.e0 , &
40	zone = 1.e0
41
42	!! * Substitutions
43	# include "domzgr_substitute.h90"
44	# include "vectopt_loop_substitute.h90"
45	!!-------- -------------------------------------------------------------
46	!! LIM 2.0 , UCL-LODYC-IPSL (2003)
47	!!----------------------------------------------------------------------
48
49	CONTAINS
50
51	SUBROUTINE lim_thd
52	!!-------------------------------------------------------------------
53	!! * ROUTINE lim_thd *
54	!!
55	!! ** Purpose : This routine manages the ice thermodynamic.
56	!!
57	!! ** Action : - Initialisation of some variables
58	!! - Some preliminary computation (oceanic heat flux
59	!! at the ice base, snow acc.,heat budget of the leads)
60	!! - selection of the icy points and put them in an array
61	!! - call lim_vert_ther for vert ice thermodynamic
62	!! - back to the geographic grid
63	!! - selection of points for lateral accretion
64	!! - call lim_lat_acc for the ice accretion
65	!! - back to the geographic grid
66	!!
67	!! ** References :
68	!! H. Goosse et al. 1996, Bul. Soc. Roy. Sc. Liege, 65, 87-90
69	!!
70	!! History :
71	!! 1.0 ! 00-01 (LIM)
72	!! 2.0 ! 02-07 (C. Ethe, G. Madec) F90
73	!!---------------------------------------------------------------------
74	!! * Local variables
75	INTEGER :: ji, jj, & ! dummy loop indices
76	nbpb , & ! nb of icy pts for thermo. cal.
77	nbpac ! nb of pts for lateral accretion
78	REAL(wp) :: &
79	zfric_umin = 5e-03 , & ! lower bound for the friction velocity
80	zfric_umax = 2e-02 ! upper bound for the friction velocity
81	REAL(wp) :: &
82	zinda , & ! switch for test. the val. of concen.
83	zindb, zindg , & ! switches for test. the val of arg
84	za , zh, zthsnice , &
85	zfric_u , & ! friction velocity
86	zfnsol , & ! total non solar heat
87	zfontn , & ! heat flux from snow thickness
88	zfntlat, zpareff ! test. the val. of lead heat budget
89	REAL(wp), DIMENSION(jpi,jpj) :: &
90	zhicifp , & ! ice thickness for outputs
91	zqlbsbq ! link with lead energy budget qldif
92	!!-------------------------------------------------------------------
93
94	IF( numit == nstart ) CALL lim_thd_init ! Initialization (first time-step only)
95
96	!-------------------------------------------!
97	! Initilization of diagnostic variables !
98	!-------------------------------------------!
99
100	!i est-ce utile? oui au moins en partie
101	rdvosif(:,:) = 0.e0 ! variation of ice volume at surface
102	rdvobif(:,:) = 0.e0 ! variation of ice volume at bottom
103	fdvolif(:,:) = 0.e0 ! total variation of ice volume
104	rdvonif(:,:) = 0.e0 ! lateral variation of ice volume
105	fstric (:,:) = 0.e0 ! part of solar radiation absorbing inside the ice
106	fscmbq (:,:) = 0.e0 ! linked with fstric
107	ffltbif(:,:) = 0.e0 ! linked with fstric
108	qfvbq (:,:) = 0.e0 ! linked with fstric
109	rdmsnif(:,:) = 0.e0 ! variation of snow mass per unit area
110	rdmicif(:,:) = 0.e0 ! variation of ice mass per unit area
111	hicifp (:,:) = 0.e0 ! daily thermodynamic ice production.
112
113	DO jj = 1, jpj
114	DO ji = 1, jpi
115	hsnif(ji,jj) = hsnif(ji,jj) * MAX( zzero, SIGN( zone , hsnif(ji,jj) - epsi04 ) )
116	END DO
117	END DO
118	IF(l_ctl) WRITE(numout,*) 'lim_thd : ', SUM( hsnif(:,:) ) , ' hsnif'
119
120
121	!-----------------------------------!
122	! Treatment of particular cases !
123	!-----------------------------------!
124
125	DO jj = 1, jpj
126	DO ji = 1, jpi
127	! snow is transformed into ice if the original ice cover disappears.
128	zindg = tms(ji,jj) * MAX( zzero , SIGN( zone , -hicif(ji,jj) ) )
129	hicif(ji,jj) = hicif(ji,jj) + zindg * rhosn * hsnif(ji,jj) / rau0
130	hsnif(ji,jj) = ( zone - zindg ) * hsnif(ji,jj) + zindg * hicif(ji,jj) * ( rau0 - rhoic ) / rhosn
131	dmgwi(ji,jj) = zindg * (1.0 - frld(ji,jj)) * rhoic * hicif(ji,jj) ! snow/ice mass
132
133	! the lead fraction, frld, must be little than or equal to amax (ice ridging).
134	zthsnice = hsnif(ji,jj) + hicif(ji,jj)
135	zindb = tms(ji,jj) * ( 1.0 - MAX( zzero , SIGN( zone , - zthsnice ) ) )
136	za = zindb * MIN( zone, ( 1.0 - frld(ji,jj) ) * uscomi )
137	hsnif (ji,jj) = hsnif(ji,jj) * za
138	hicif (ji,jj) = hicif(ji,jj) * za
139	qstoif(ji,jj) = qstoif(ji,jj) * za
140	frld (ji,jj) = 1.0 - zindb * ( 1.0 - frld(ji,jj) ) / MAX( za , epsi20 )
141
142	! the in situ ice thickness, hicif, must be equal to or greater than hiclim.
143	zh = MAX( zone , zindb * hiclim / MAX( hicif(ji,jj) , epsi20 ) )
144	hsnif (ji,jj) = hsnif(ji,jj) * zh
145	hicif (ji,jj) = hicif(ji,jj) * zh
146	qstoif(ji,jj) = qstoif(ji,jj) * zh
147	frld (ji,jj) = ( frld(ji,jj) + ( zh - 1.0 ) ) / zh
148	END DO
149	END DO
150	IF(l_ctl) THEN
151	WRITE(numout,*) 'lim_thd: hicif : ', SUM( hicif ), ' hsnif ', SUM( hsnif )
152	WRITE(numout,*) 'lim_thd: dmgwi : ', SUM( dmgwi ), ' qstoif ', SUM( qstoif )
153	WRITE(numout,*) 'lim_thd: frld : ', SUM( frld )
154	ENDIF
155
156
157	!-------------------------------!
158	! Thermodynamics of sea ice !
159	!-------------------------------!
160
161	! Partial computation of forcing for the thermodynamic sea ice model.
162	!--------------------------------------------------------------------------
163
164	!CDIR NOVERRCHK
165	DO jj = 1, jpj
166	!CDIR NOVERRCHK
167	DO ji = 1, jpi
168	zthsnice = hsnif(ji,jj) + hicif(ji,jj)
169	zindb = tms(ji,jj) * ( 1.0 - MAX( zzero , SIGN( zone , - zthsnice ) ) )
170	pfrld(ji,jj) = frld(ji,jj)
171	zinda = 1.0 - MAX( zzero , SIGN( zone , - ( 1.0 - pfrld(ji,jj) ) ) )
172
173	! solar irradiance transmission at the mixed layer bottom and used in the lead heat budget
174	thcm(ji,jj) = 0.e0
175
176	! net downward heat flux from the ice to the ocean, expressed as a function of ocean
177	! temperature and turbulent mixing (McPhee, 1992)
178	zfric_u = MAX ( MIN( SQRT( ust2s(ji,jj) ) , zfric_umax ) , zfric_umin ) ! friction velocity
179	fdtcn(ji,jj) = zindb * rau0 * rcp * 0.006 * zfric_u * ( sst_io(ji,jj) - tfu(ji,jj) )
180	qdtcn(ji,jj) = zindb * fdtcn(ji,jj) * frld(ji,jj) * rdt_ice
181
182	! partial computation of the lead energy budget (qldif)
183	zfontn = ( sprecip(ji,jj) / rhosn ) * xlsn ! energy for melting
184	zfnsol = qnsr_oce(ji,jj) ! total non solar flux
185	qldif(ji,jj) = tms(ji,jj) * ( qsr_oce(ji,jj) * ( 1.0 - thcm(ji,jj) ) &
186	& + zfnsol + fdtcn(ji,jj) - zfontn &
187	& + ( 1.0 - zindb ) * fsbbq(ji,jj) ) &
188	& * frld(ji,jj) * rdt_ice
189	! parlat : percentage of energy used for lateral ablation (0.0)
190	zfntlat = 1.0 - MAX( zzero , SIGN( zone , - qldif(ji,jj) ) )
191	zpareff = 1.0 + ( parlat - 1.0 ) * zinda * zfntlat
192	zqlbsbq(ji,jj) = qldif(ji,jj) * ( 1.0 - zpareff ) / MAX( (1.0 - frld(ji,jj)) * rdt_ice , epsi16 )
193	qldif (ji,jj) = zpareff * qldif(ji,jj)
194	qdtcn (ji,jj) = zpareff * qdtcn(ji,jj)
195
196	! energy needed to bring ocean surface layer until its freezing
197	qcmif (ji,jj) = rau0 * rcp * fse3t(ji,jj,1) * ( tfu(ji,jj) - sst_io(ji,jj) ) * ( 1 - zinda )
198
199	! calculate oceanic heat flux.
200	fbif (ji,jj) = zindb * ( fsbbq(ji,jj) / MAX( (1.0 - frld(ji,jj)) , epsi20 ) + fdtcn(ji,jj) )
201
202	! computation of the daily thermodynamic ice production (only needed for output)
203	zhicifp(ji,jj) = hicif(ji,jj) * ( 1.0 - frld(ji,jj) )
204	END DO
205	END DO
206
207
208	! Select icy points and fulfill arrays for the vectorial grid.
209	!----------------------------------------------------------------------
210	nbpb = 0
211	DO jj = 1, jpj
212	DO ji = 1, jpi
213	IF ( frld(ji,jj) < 1.0 ) THEN
214	nbpb = nbpb + 1
215	npb(nbpb) = (jj - 1) * jpi + ji
216	ENDIF
217	END DO
218	END DO
219	IF(l_ctl) THEN
220	WRITE(numout,*) 'lim_thd: pfrld ', SUM( pfrld ), ' thcm ', SUM( thcm )
221	WRITE(numout,*) 'lim_thd: fdtcn ', SUM( fdtcn ), ' qdtcn ', SUM( qdtcn )
222	WRITE(numout,*) 'lim_thd: qldif ', SUM( qldif ), ' zqlbsbq ', SUM( zqlbsbq )
223	WRITE(numout,*) 'lim_thd: qcmif ', SUM( qcmif ), ' fbif ', SUM( fbif )
224	WRITE(numout,) 'lim_thd: qcmif ', SUM( qcmiftms )
225	WRITE(numout,*) 'lim_thd: zhicifp', SUM( zhicifp )
226	WRITE(numout,*) 'limthd : nbpb = ', nbpb
227	ENDIF
228
229
230	! If there is no ice, do nothing. Otherwise, compute Top and Bottom accretion/ablation
231	!------------------------------------------------------------------------------------
232
233	IF ( nbpb > 0) THEN
234
235	! put the variable in a 1-D array for thermodynamics process
236	CALL tab_2d_1d( nbpb, frld_1d (1:nbpb) , frld , jpi, jpj, npb(1:nbpb) )
237	CALL tab_2d_1d( nbpb, h_ice_1d (1:nbpb) , hicif , jpi, jpj, npb(1:nbpb) )
238	CALL tab_2d_1d( nbpb, h_snow_1d (1:nbpb) , hsnif , jpi, jpj, npb(1:nbpb) )
239	CALL tab_2d_1d( nbpb, sist_1d (1:nbpb) , sist , jpi, jpj, npb(1:nbpb) )
240	CALL tab_2d_1d( nbpb, tbif_1d (1:nbpb , 1 ), tbif(:,:,1), jpi, jpj, npb(1:nbpb) )
241	CALL tab_2d_1d( nbpb, tbif_1d (1:nbpb , 2 ), tbif(:,:,2), jpi, jpj, npb(1:nbpb) )
242	CALL tab_2d_1d( nbpb, tbif_1d (1:nbpb , 3 ), tbif(:,:,3), jpi, jpj, npb(1:nbpb) )
243	CALL tab_2d_1d( nbpb, qsr_ice_1d (1:nbpb) , qsr_ice , jpi, jpj, npb(1:nbpb) )
244	CALL tab_2d_1d( nbpb, fr1_i0_1d (1:nbpb) , fr1_i0 , jpi, jpj, npb(1:nbpb) )
245	CALL tab_2d_1d( nbpb, fr2_i0_1d (1:nbpb) , fr2_i0 , jpi, jpj, npb(1:nbpb) )
246	CALL tab_2d_1d( nbpb, qnsr_ice_1d(1:nbpb) , qnsr_ice , jpi, jpj, npb(1:nbpb) )
247	CALL tab_2d_1d( nbpb, qla_ice_1d (1:nbpb) , qla_ice , jpi, jpj, npb(1:nbpb) )
248	CALL tab_2d_1d( nbpb, dqla_ice_1d(1:nbpb) , dqla_ice , jpi, jpj, npb(1:nbpb) )
249	CALL tab_2d_1d( nbpb, dqns_ice_1d(1:nbpb) , dqns_ice , jpi, jpj, npb(1:nbpb) )
250	CALL tab_2d_1d( nbpb, tfu_1d (1:nbpb) , tfu , jpi, jpj, npb(1:nbpb) )
251	CALL tab_2d_1d( nbpb, sprecip_1d (1:nbpb) , sprecip , jpi, jpj, npb(1:nbpb) )
252	CALL tab_2d_1d( nbpb, fbif_1d (1:nbpb) , fbif , jpi, jpj, npb(1:nbpb) )
253	CALL tab_2d_1d( nbpb, thcm_1d (1:nbpb) , thcm , jpi, jpj, npb(1:nbpb) )
254	CALL tab_2d_1d( nbpb, qldif_1d (1:nbpb) , qldif , jpi, jpj, npb(1:nbpb) )
255	CALL tab_2d_1d( nbpb, qstbif_1d (1:nbpb) , qstoif , jpi, jpj, npb(1:nbpb) )
256	CALL tab_2d_1d( nbpb, rdmicif_1d (1:nbpb) , rdmicif , jpi, jpj, npb(1:nbpb) )
257	CALL tab_2d_1d( nbpb, dmgwi_1d (1:nbpb) , dmgwi , jpi, jpj, npb(1:nbpb) )
258	CALL tab_2d_1d( nbpb, qlbbq_1d (1:nbpb) , zqlbsbq , jpi, jpj, npb(1:nbpb) )
259
260	CALL lim_thd_zdf( 1, nbpb ) ! compute ice growth
261
262	! back to the geographic grid.
263	CALL tab_1d_2d( nbpb, frld , npb, frld_1d (1:nbpb) , jpi, jpj )
264	CALL tab_1d_2d( nbpb, hicif , npb, h_ice_1d (1:nbpb) , jpi, jpj )
265	CALL tab_1d_2d( nbpb, hsnif , npb, h_snow_1d (1:nbpb) , jpi, jpj )
266	CALL tab_1d_2d( nbpb, sist , npb, sist_1d (1:nbpb) , jpi, jpj )
267	CALL tab_1d_2d( nbpb, tbif(:,:,1), npb, tbif_1d (1:nbpb , 1 ), jpi, jpj )
268	CALL tab_1d_2d( nbpb, tbif(:,:,2), npb, tbif_1d (1:nbpb , 2 ), jpi, jpj )
269	CALL tab_1d_2d( nbpb, tbif(:,:,3), npb, tbif_1d (1:nbpb , 3 ), jpi, jpj )
270	CALL tab_1d_2d( nbpb, fscmbq , npb, fscbq_1d (1:nbpb) , jpi, jpj )
271	CALL tab_1d_2d( nbpb, ffltbif , npb, fltbif_1d (1:nbpb) , jpi, jpj )
272	CALL tab_1d_2d( nbpb, fstric , npb, fstbif_1d (1:nbpb) , jpi, jpj )
273	CALL tab_1d_2d( nbpb, qldif , npb, qldif_1d (1:nbpb) , jpi, jpj )
274	CALL tab_1d_2d( nbpb, qfvbq , npb, qfvbq_1d (1:nbpb) , jpi, jpj )
275	CALL tab_1d_2d( nbpb, qstoif , npb, qstbif_1d (1:nbpb) , jpi, jpj )
276	CALL tab_1d_2d( nbpb, rdmicif , npb, rdmicif_1d(1:nbpb) , jpi, jpj )
277	CALL tab_1d_2d( nbpb, dmgwi , npb, dmgwi_1d (1:nbpb) , jpi, jpj )
278	CALL tab_1d_2d( nbpb, rdmsnif , npb, rdmsnif_1d(1:nbpb) , jpi, jpj )
279	CALL tab_1d_2d( nbpb, rdvosif , npb, dvsbq_1d (1:nbpb) , jpi, jpj )
280	CALL tab_1d_2d( nbpb, rdvobif , npb, dvbbq_1d (1:nbpb) , jpi, jpj )
281	CALL tab_1d_2d( nbpb, fdvolif , npb, dvlbq_1d (1:nbpb) , jpi, jpj )
282	CALL tab_1d_2d( nbpb, rdvonif , npb, dvnbq_1d (1:nbpb) , jpi, jpj )
283
284
285	ENDIF
286
287
288	! Up-date sea ice thickness.
289	!---------------------------------
290	DO jj = 1, jpj
291	DO ji = 1, jpi
292	phicif(ji,jj) = hicif(ji,jj)
293	hicif(ji,jj) = hicif(ji,jj) * ( zone - MAX( zzero, SIGN( zone, - ( 1.0 - frld(ji,jj) ) ) ) )
294	END DO
295	END DO
296
297
298	! Tricky trick : add 2 to frld in the Southern Hemisphere.
299	!----------------------------------------------------------
300	DO jj = 1, njeqm1 !ibug in mpp
301	DO ji = 1, jpi
302	frld(ji,jj) = frld(ji,jj) + 2.0
303	END DO
304	END DO
305
306
307	! Select points for lateral accretion (this occurs when heat exchange
308	! between ice and ocean is negative; ocean losing heat)
309	!-----------------------------------------------------------------
310	nbpac = 0
311	DO jj = 1, jpj
312	DO ji = 1, jpi
313	!i yes! IF ( ( qcmif(ji,jj) - qldif(ji,jj) ) > 0.e0 ) THEN
314	IF ( tms(ji,jj) * ( qcmif(ji,jj) - qldif(ji,jj) ) > 0.e0 ) THEN
315	nbpac = nbpac + 1
316	npac( nbpac ) = (jj - 1) * jpi + ji
317	ENDIF
318	END DO
319	END DO
320
321	IF(l_ctl) THEN
322	WRITE(numout,*) 'lim_thd : phicif ', SUM( phicif ), ' hicif ', SUM( hicif )
323	WRITE(numout,*) 'lim_thd : nbpac = ', nbpac
324	ENDIF
325
326
327	!
328	! If ocean gains heat do nothing ; otherwise, one performs lateral accretion
329	!--------------------------------------------------------------------------------
330
331	IF( nbpac > 0 ) THEN
332
333	!...Put the variable in a 1-D array for lateral accretion
334	CALL tab_2d_1d( nbpac, frld_1d (1:nbpac) , frld , jpi, jpj, npac(1:nbpac) )
335	CALL tab_2d_1d( nbpac, h_snow_1d (1:nbpac) , hsnif , jpi, jpj, npac(1:nbpac) )
336	CALL tab_2d_1d( nbpac, h_ice_1d (1:nbpac) , hicif , jpi, jpj, npac(1:nbpac) )
337	CALL tab_2d_1d( nbpac, tbif_1d (1:nbpac , 1 ), tbif(:,:,1), jpi, jpj, npac(1:nbpac) )
338	CALL tab_2d_1d( nbpac, tbif_1d (1:nbpac , 2 ), tbif(:,:,2), jpi, jpj, npac(1:nbpac) )
339	CALL tab_2d_1d( nbpac, tbif_1d (1:nbpac , 3 ), tbif(:,:,3), jpi, jpj, npac(1:nbpac) )
340	CALL tab_2d_1d( nbpac, qldif_1d (1:nbpac) , qldif , jpi, jpj, npac(1:nbpac) )
341	CALL tab_2d_1d( nbpac, qcmif_1d (1:nbpac) , qcmif , jpi, jpj, npac(1:nbpac) )
342	CALL tab_2d_1d( nbpac, qstbif_1d (1:nbpac) , qstoif , jpi, jpj, npac(1:nbpac) )
343	CALL tab_2d_1d( nbpac, rdmicif_1d(1:nbpac) , rdmicif , jpi, jpj, npac(1:nbpac) )
344	CALL tab_2d_1d( nbpac, dvlbq_1d (1:nbpac) , fdvolif , jpi, jpj, npac(1:nbpac) )
345	CALL tab_2d_1d( nbpac, tfu_1d (1:nbpac) , tfu , jpi, jpj, npac(1:nbpac) )
346
347	! call lateral accretion routine.
348	CALL lim_thd_lac( 1 , nbpac )
349
350	! back to the geographic grid
351	CALL tab_1d_2d( nbpac, frld , npac(1:nbpac), frld_1d (1:nbpac) , jpi, jpj )
352	CALL tab_1d_2d( nbpac, hsnif , npac(1:nbpac), h_snow_1d (1:nbpac) , jpi, jpj )
353	CALL tab_1d_2d( nbpac, hicif , npac(1:nbpac), h_ice_1d (1:nbpac) , jpi, jpj )
354	CALL tab_1d_2d( nbpac, tbif(:,:,1), npac(1:nbpac), tbif_1d (1:nbpac , 1 ), jpi, jpj )
355	CALL tab_1d_2d( nbpac, tbif(:,:,2), npac(1:nbpac), tbif_1d (1:nbpac , 2 ), jpi, jpj )
356	CALL tab_1d_2d( nbpac, tbif(:,:,3), npac(1:nbpac), tbif_1d (1:nbpac , 3 ), jpi, jpj )
357	CALL tab_1d_2d( nbpac, qstoif , npac(1:nbpac), qstbif_1d (1:nbpac) , jpi, jpj )
358	CALL tab_1d_2d( nbpac, rdmicif , npac(1:nbpac), rdmicif_1d(1:nbpac) , jpi, jpj )
359	CALL tab_1d_2d( nbpac, fdvolif , npac(1:nbpac), dvlbq_1d (1:nbpac) , jpi, jpj )
360
361	ENDIF
362
363
364	! Recover frld values between 0 and 1 in the Southern Hemisphere (tricky trick)
365	! Update daily thermodynamic ice production.
366	!------------------------------------------------------------------------------
367
368	DO jj = 1, jpj
369	DO ji = 1, jpi
370	frld (ji,jj) = MIN( frld(ji,jj), ABS( frld(ji,jj) - 2.0 ) )
371	hicifp(ji,jj) = hicif(ji,jj) * ( 1.0 - frld(ji,jj) ) - zhicifp(ji,jj) + hicifp(ji,jj)
372	END DO
373	END DO
374
375	IF(l_ctl) THEN
376	WRITE(numout,*) ' lim_thd end '
377	WRITE(numout,*) ' hicif ', SUM( hicif ), ' hsnif ', SUM( hsnif )
378	WRITE(numout,*) ' frld ', SUM( frld ), ' hicifp', SUM( hicifp )
379	WRITE(numout,*) ' phicif', SUM( phicif ), ' pfrld ', SUM( pfrld )
380	WRITE(numout,*) ' sist ', SUM( sist ), ' tbif 1', SUM( tbif (:,:,1) )
381	WRITE(numout,*) ' tbif 2', SUM( tbif(:,:,2) ), ' tbif 3', SUM( tbif (:,:,3) )
382	WRITE(numout,*) ' fdtcn ', SUM( fdtcn ), ' qdtcn ', SUM( qdtcn )
383	WRITE(numout,*) ' qstoif', SUM( qstoif ), ' fsbbq ', SUM( fsbbq )
384	ENDIF
385
386	END SUBROUTINE lim_thd
387
388
389	SUBROUTINE lim_thd_init
390	!!-------------------------------------------------------------------
391	!! * ROUTINE lim_thd_init *
392	!!
393	!! ** Purpose : Physical constants and parameters linked to the ice
394	!! thermodynamics
395	!!
396	!! ** Method : Read the namicethd namelist and check the ice-thermo
397	!! parameter values called at the first timestep (nit000)
398	!!
399	!! ** input : Namelist namicether
400	!!
401	!! history :
402	!! 8.5 ! 03-08 (C. Ethe) original code
403	!!-------------------------------------------------------------------
404	NAMELIST/namicethd/ hmelt , hiccrit, hicmin, hiclim, amax , &
405	& swiqst, sbeta , parlat, hakspl, hibspl, exld, &
406	& hakdif, hnzst , thth , parsub, alphs
407	!!-------------------------------------------------------------------
408
409
410	! Define the initial parameters
411	! -------------------------
412	REWIND( numnam_ice )
413	READ ( numnam_ice , namicethd )
414	IF(lwp) THEN
415	WRITE(numout,*)
416	WRITE(numout,*)'lim_thd_init : ice parameters for ice thermodynamic computation '
417	WRITE(numout,*)'~~~~~~~~~~~~'
418	WRITE(numout,*)' maximum melting at the bottom hmelt = ', hmelt
419	WRITE(numout,*)' ice thick. for lateral accretion in NH (SH) hiccrit(1/2) = ', hiccrit
420	WRITE(numout,*)' ice thick. corr. to max. energy stored in brine pocket hicmin = ', hicmin
421	WRITE(numout,*)' minimum ice thickness hiclim = ', hiclim
422	WRITE(numout,*)' maximum lead fraction amax = ', amax
423	WRITE(numout,*)' energy stored in brine pocket (=1) or not (=0) swiqst = ', swiqst
424	WRITE(numout,*)' numerical carac. of the scheme for diffusion in ice '
425	WRITE(numout,*)' Cranck-Nicholson (=0.5), implicit (=1), explicit (=0) sbeta = ', sbeta
426	WRITE(numout,*)' percentage of energy used for lateral ablation parlat = ', parlat
427	WRITE(numout,*)' slope of distr. for Hakkinen-Mellor lateral melting hakspl = ', hakspl
428	WRITE(numout,*)' slope of distribution for Hibler lateral melting hibspl = ', hibspl
429	WRITE(numout,*)' exponent for leads-closure rate exld = ', exld
430	WRITE(numout,*)' coefficient for diffusions of ice and snow hakdif = ', hakdif
431	WRITE(numout,*)' threshold thick. for comp. of eq. thermal conductivity zhth = ', thth
432	WRITE(numout,*)' thickness of the surf. layer in temp. computation hnzst = ', hnzst
433	WRITE(numout,*)' switch for snow sublimation (=1) or not (=0) parsub = ', parsub
434	WRITE(numout,*)' coefficient for snow density when snow ice formation alphs = ', alphs
435	ENDIF
436
437	uscomi = 1.0 / ( 1.0 - amax ) ! inverse of minimum lead fraction
438	rcdsn = hakdif * rcdsn
439	rcdic = hakdif * rcdic
440
441	IF ( ( hsndif > 100.e0 ) .OR. ( hicdif > 100.e0 ) ) THEN
442	cnscg = 0.e0
443	ELSE
444	cnscg = rcpsn / rcpic ! ratio rcpsn/rcpic
445	ENDIF
446
447	END SUBROUTINE lim_thd_init
448
449	#else
450	!!----------------------------------------------------------------------
451	!! Default option Dummy module NO LIM sea-ice model
452	!!----------------------------------------------------------------------
453	CONTAINS
454	SUBROUTINE lim_thd ! Dummy routine
455	END SUBROUTINE lim_thd
456	#endif
457
458	!!======================================================================
459	END MODULE limthd

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