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sbcblk_core.F90 in branches/2011/dev_r2784_CMCC1_topbfm/NEMOGCM/NEMO/OPA_SRC/SBC – NEMO

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source: branches/2011/dev_r2784_CMCC1_topbfm/NEMOGCM/NEMO/OPA_SRC/SBC/sbcblk_core.F90 @ 2799

Last change on this file since 2799 was 2799, checked in by vichi, 13 years ago
Updated sbcblk_core.F90 so it can be used for both ORCA2 and ORCA025
Property svn:keywords set to `Id`
File size: 64.5 KB

Line
1	MODULE sbcblk_core
2	!!======================================================================
3	!! * MODULE sbcblk_core *
4	!! Ocean forcing: momentum, heat and freshwater flux formulation
5	!!=====================================================================
6	!! History : 1.0 ! 2004-08 (U. Schweckendiek) Original code
7	!! 2.0 ! 2005-04 (L. Brodeau, A.M. Treguier) additions:
8	!! - new bulk routine for efficiency
9	!! - WINDS ARE NOW ASSUMED TO BE AT T POINTS in input files !!!!
10	!! - file names and file characteristics in namelist
11	!! - Implement reading of 6-hourly fields
12	!! 3.0 ! 2006-06 (G. Madec) sbc rewritting
13	!! - ! 2006-12 (L. Brodeau) Original code for TURB_CORE_2Z
14	!! 3.2 ! 2009-04 (B. Lemaire) Introduce iom_put
15	!! 3.3 ! 2010-10 (S. Masson) add diurnal cycle
16	!!----------------------------------------------------------------------
17
18	!!----------------------------------------------------------------------
19	!! sbc_blk_core : bulk formulation as ocean surface boundary condition
20	!! (forced mode, CORE bulk formulea)
21	!! blk_oce_core : ocean: computes momentum, heat and freshwater fluxes
22	!! blk_ice_core : ice : computes momentum, heat and freshwater fluxes
23	!! turb_core : computes the CORE turbulent transfer coefficients
24	!!----------------------------------------------------------------------
25	USE oce ! ocean dynamics and tracers
26	USE dom_oce ! ocean space and time domain
27	USE phycst ! physical constants
28	USE fldread ! read input fields
29	USE sbc_oce ! Surface boundary condition: ocean fields
30	USE sbcdcy ! surface boundary condition: diurnal cycle
31	USE iom ! I/O manager library
32	USE in_out_manager ! I/O manager
33	USE lib_mpp ! distribued memory computing library
34	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
35	USE prtctl ! Print control
36	#if defined key_lim3
37	USE sbc_ice ! Surface boundary condition: ice fields
38	#endif
39
40	IMPLICIT NONE
41	PRIVATE
42
43	PUBLIC sbc_blk_core ! routine called in sbcmod module
44	PUBLIC blk_ice_core ! routine called in sbc_ice_lim module
45
46	INTEGER , PARAMETER :: jp_wndi = 1 ! index of 10m wind velocity (i-component) (m/s) at T-point
47	INTEGER , PARAMETER :: jp_wndj = 2 ! index of 10m wind velocity (j-component) (m/s) at T-point
48	INTEGER , PARAMETER :: jp_humi = 3 ! index of specific humidity ( - )
49	INTEGER , PARAMETER :: jp_qsr = 4 ! index of solar heat (W/m2)
50	INTEGER , PARAMETER :: jp_qlw = 5 ! index of Long wave (W/m2)
51	INTEGER , PARAMETER :: jp_tair = 6 ! index of 10m air temperature (Kelvin)
52	INTEGER , PARAMETER :: jp_prec = 7 ! index of total precipitation (rain+snow) (Kg/m2/s)
53	INTEGER , PARAMETER :: jp_snow = 8 ! index of snow (solid prcipitation) (kg/m2/s)
54	INTEGER , PARAMETER :: jp_tdif = 9 ! index of tau diff associated to HF tau (N/m2) at T-point
55	#if defined key_orca_r025
56	INTEGER , PARAMETER :: jp_swc = 10 ! index of GEWEX correction for SW radiation at T-point
57	INTEGER , PARAMETER :: jp_lwc = 11 ! index of GEWEX correction for LW radiation at T-point
58	INTEGER , PARAMETER :: jp_prc = 12 ! index of PMWC correction forat T-point
59	INTEGER , PARAMETER :: jpfld = 12 ! maximum number of files to read
60	#else
61	INTEGER , PARAMETER :: jpfld = 9 ! maximum number of files to read
62	#endif
63
64	TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf ! structure of input fields (file informations, fields read)
65
66	! !!! CORE bulk parameters
67	REAL(wp), PARAMETER :: rhoa = 1.22 ! air density
68	REAL(wp), PARAMETER :: cpa = 1000.5 ! specific heat of air
69	REAL(wp), PARAMETER :: Lv = 2.5e6 ! latent heat of vaporization
70	REAL(wp), PARAMETER :: Ls = 2.839e6 ! latent heat of sublimation
71	REAL(wp), PARAMETER :: Stef = 5.67e-8 ! Stefan Boltzmann constant
72	REAL(wp), PARAMETER :: Cice = 1.63e-3 ! transfer coefficient over ice
73	REAL(wp), PARAMETER :: albo = 0.066 ! ocean albedo assumed to be contant
74
75	! !!* Namelist namsbc_core : CORE bulk parameters
76	LOGICAL :: ln_2m = .FALSE. ! logical flag for height of air temp. and hum
77	LOGICAL :: ln_taudif = .FALSE. ! logical flag to use the "mean of stress module - module of mean stress" data
78	REAL(wp) :: rn_pfac = 1. ! multiplication factor for precipitation
79
80	#if defined key_orca_r025
81	LOGICAL :: ln_printdia= .TRUE. ! logical flag for height of air temp. and hum
82	LOGICAL :: ln_netsw = .TRUE. ! logical flag for height of air temp. and hum
83	LOGICAL :: ln_core_graceopt=.FALSE., ln_core_spinup=.FALSE.
84	LOGICAL :: ln_gwxc = .TRUE.
85	LOGICAL :: ln_corad_antar =.FALSE., ln_corad_arc =.FALSE. , ln_cotair_arc = .FALSE.
86	LOGICAL :: ln_coprecip =.FALSE.
87	REAL(wp) :: rn_qns_bias = 0._wp ! heat flux bias
88
89	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: area
90	REAL(wp) :: araux
91
92	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zqlw, zqsb ! long wave and sensible heat fluxes
93	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zqla, zevap ! latent heat fluxes and evaporation
94
95	REAL(wp), PARAMETER :: zalph = 2.408724e-06_wp, &
96	& zbet = -0.006936579_wp, zgam = 449.9094_wp ! GRACE regression coefficients
97	#endif
98
99	!! * Substitutions
100	# include "domzgr_substitute.h90"
101	# include "vectopt_loop_substitute.h90"
102	!!----------------------------------------------------------------------
103	!! NEMO/OPA 3.3 , NEMO-consortium (2010)
104	!! $Id$
105	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
106	!!----------------------------------------------------------------------
107	CONTAINS
108
109	SUBROUTINE sbc_blk_core( kt )
110	!!---------------------------------------------------------------------
111	!! * ROUTINE sbc_blk_core *
112	!!
113	!! ** Purpose : provide at each time step the surface ocean fluxes
114	!! (momentum, heat, freshwater and runoff)
115	!!
116	!! ** Method : (1) READ each fluxes in NetCDF files:
117	!! the 10m wind velocity (i-component) (m/s) at T-point
118	!! the 10m wind velocity (j-component) (m/s) at T-point
119	!! the specific humidity ( - )
120	!! the solar heat (W/m2)
121	!! the Long wave (W/m2)
122	!! the 10m air temperature (Kelvin)
123	!! the total precipitation (rain+snow) (Kg/m2/s)
124	!! the snow (solid prcipitation) (kg/m2/s)
125	!! OPTIONAL parameter (see ln_taudif namelist flag):
126	!! the tau diff associated to HF tau (N/m2) at T-point
127	!! (2) CALL blk_oce_core
128	!!
129	!! C A U T I O N : never mask the surface stress fields
130	!! the stress is assumed to be in the mesh referential
131	!! i.e. the (i,j) referential
132	!!
133	!! ** Action : defined at each time-step at the air-sea interface
134	!! - utau, vtau i- and j-component of the wind stress
135	!! - taum wind stress module at T-point
136	!! - wndm 10m wind module at T-point
137	!! - qns, qsr non-slor and solar heat flux
138	!! - emp, emps evaporation minus precipitation
139	!!----------------------------------------------------------------------
140	#if defined key_orca_r025
141	USE ice_2
142	#endif
143	INTEGER, INTENT(in) :: kt ! ocean time step
144	!!
145	INTEGER :: ierror ! return error code
146	INTEGER :: ifpr ! dummy loop indice
147	INTEGER :: jfld ! dummy loop arguments
148	INTEGER :: ji, jj
149	!!
150	CHARACTER(len=100) :: cn_dir ! Root directory for location of core files
151	TYPE(FLD_N), DIMENSION(jpfld) :: slf_i ! array of namelist informations on the fields to read
152	TYPE(FLD_N) :: sn_wndi, sn_wndj, sn_humi, sn_qsr ! informations about the fields to be read
153	TYPE(FLD_N) :: sn_qlw , sn_tair, sn_prec, sn_snow ! " "
154	TYPE(FLD_N) :: sn_tdif ! " "
155	TYPE(FLD_N) :: sn_swc, sn_lwc ! " "
156	TYPE(FLD_N) :: sn_prc
157	INTEGER :: iter_shapiro = 250
158	REAL :: zzlat, zzlat1, zzlat2, zfm, zfrld, ztmp
159	REAL(wp), DIMENSION(jpi,jpj):: xyt,z_qsr,z_qlw,z_qsr1,z_qlw1, z_hum, z_tair
160	REAL(wp), DIMENSION(jpi,jpj):: zqsr_lr, zqsr_hr, zqlw_lr, zqlw_hr, zprec_hr, zprec_lr
161	CHARACTER(len=20) :: c_kind='ORCA_GLOB'
162	#if defined key_orca_r025
163	NAMELIST/namsbc_core/ cn_dir , ln_2m , ln_taudif, rn_pfac, &
164	& sn_wndi, sn_wndj, sn_humi , sn_qsr , &
165	& sn_qlw , sn_tair, sn_prec , sn_snow, sn_tdif &
166	& sn_swc , sn_lwc , sn_prc , ln_gwxc , &
167	& ln_corad_antar, ln_corad_arc, ln_cotair_arc, ln_coprecip , &
168	& rn_qns_bias, ln_printdia, ln_netsw, ln_core_graceopt,ln_core_spinup
169	!!---------------------------------------------------------------------
170	#else
171	NAMELIST/namsbc_core/ cn_dir , ln_2m , ln_taudif, rn_pfac, &
172	& sn_wndi, sn_wndj, sn_humi , sn_qsr , &
173	& sn_qlw , sn_tair, sn_prec , sn_snow, sn_tdif
174	!!---------------------------------------------------------------------
175	#endif
176
177	! ! ====================== !
178	IF( kt == nit000 ) THEN ! First call kt=nit000 !
179	! ! ====================== !
180	#if defined key_orca_r025
181	! !== allocate sbc arrays
182	IF( sbc_blk_core_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'sbc_blk_core_alloc : unable to allocate arrays' )
183	#endif
184
185	! set file information (default values)
186	cn_dir = './' ! directory in which the model is executed
187	!
188	! (NB: frequency positive => hours, negative => months)
189	! ! file ! frequency ! variable ! time intep ! clim ! 'yearly' or ! weights ! rotation !
190	! ! name ! (hours) ! name ! (T/F) ! (T/F) ! 'monthly' ! filename ! pairs !
191	sn_wndi = FLD_N( 'uwnd10m', 24 , 'u_10' , .false. , .false. , 'yearly' , '' , '' )
192	sn_wndj = FLD_N( 'vwnd10m', 24 , 'v_10' , .false. , .false. , 'yearly' , '' , '' )
193	sn_qsr = FLD_N( 'qsw' , 24 , 'qsw' , .false. , .false. , 'yearly' , '' , '' )
194	sn_qlw = FLD_N( 'qlw' , 24 , 'qlw' , .false. , .false. , 'yearly' , '' , '' )
195	sn_tair = FLD_N( 'tair10m', 24 , 't_10' , .false. , .false. , 'yearly' , '' , '' )
196	sn_humi = FLD_N( 'humi10m', 24 , 'q_10' , .false. , .false. , 'yearly' , '' , '' )
197	sn_prec = FLD_N( 'precip' , -1 , 'precip' , .true. , .false. , 'yearly' , '' , '' )
198	sn_snow = FLD_N( 'snow' , -1 , 'snow' , .true. , .false. , 'yearly' , '' , '' )
199	sn_tdif = FLD_N( 'taudif' , 24 , 'taudif' , .true. , .false. , 'yearly' , '' , '' )
200	#if defined key_orca_r025
201	sn_swc = FLD_N( 'swc' , 24 , 'swc' , .true. , .false. , 'yearly' , '' , '' )
202	sn_lwc = FLD_N( 'lwc' , 24 , 'lwc' , .true. , .false. , 'yearly' , '' , '' )
203	sn_prc = FLD_N( 'prc' , 24 , 'prc' , .true. , .false. , 'yearly' , '' , '' )
204	#endif
205	!
206	REWIND( numnam ) ! read in namlist namsbc_core
207	READ ( numnam, namsbc_core )
208	! ! check: do we plan to use ln_dm2dc with non-daily forcing?
209	IF( ln_dm2dc .AND. sn_qsr%nfreqh /= 24 ) &
210	& CALL ctl_stop( 'sbc_blk_core: ln_dm2dc can be activated only with daily short-wave forcing' )
211	IF( ln_dm2dc .AND. sn_qsr%ln_tint ) THEN
212	CALL ctl_warn( 'sbc_blk_core: ln_dm2dc is taking care of the temporal interpolation of daily qsr', &
213	& ' ==> We force time interpolation = .false. for qsr' )
214	sn_qsr%ln_tint = .false.
215	ENDIF
216	! ! store namelist information in an array
217	slf_i(jp_wndi) = sn_wndi ; slf_i(jp_wndj) = sn_wndj
218	slf_i(jp_qsr ) = sn_qsr ; slf_i(jp_qlw ) = sn_qlw
219	slf_i(jp_tair) = sn_tair ; slf_i(jp_humi) = sn_humi
220	slf_i(jp_prec) = sn_prec ; slf_i(jp_snow) = sn_snow
221	slf_i(jp_tdif) = sn_tdif
222	#if defined key_orca_r025
223	slf_i(jp_swc ) = sn_swc
224	slf_i(jp_lwc ) = sn_lwc
225	slf_i(jp_prc ) = sn_prc
226	#endif
227	!
228	lhftau = ln_taudif ! do we use HF tau information?
229	jfld = jpfld - COUNT( (/.NOT. lhftau/) )
230	#if defined key_orca_r025
231	IF( .NOT. ln_gwxc ) jfld = jfld - 2
232	IF( .NOT. ln_coprecip ) jfld = jfld - 1
233	#endif
234	!
235	ALLOCATE( sf(jfld), STAT=ierror ) ! set sf structure
236	IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_blk_core: unable to allocate sf structure' )
237	DO ifpr= 1, jfld
238	ALLOCATE( sf(ifpr)%fnow(jpi,jpj,1) )
239	IF( slf_i(ifpr)%ln_tint ) ALLOCATE( sf(ifpr)%fdta(jpi,jpj,1,2) )
240	END DO
241	! ! fill sf with slf_i and control print
242	CALL fld_fill( sf, slf_i, cn_dir, 'sbc_blk_core', 'flux formulation for ocean surface boundary condition', 'namsbc_core' )
243	!
244	#if defined key_orca_r025
245	IF( ln_printdia .OR. ln_core_graceopt ) THEN
246	area = (e1t * e2t)
247	araux = sum ( area * tmask(:,:,1) )
248	IF(lk_mpp) CALL mpp_sum ( araux )
249	ENDIF
250	#endif
251	ENDIF
252
253	CALL fld_read( kt, nn_fsbc, sf ) ! input fields provided at the current time-step
254
255	IF( MOD( kt - 1, nn_fsbc ) == 0 ) THEN
256
257	#if defined key_orca_r025
258	! Introduce ERA-Interim filtering and correction
259
260	IF( ln_gwxc ) THEN
261
262	call Shapiro_1D(sf(jp_qsr)%fnow(:,:,1),iter_shapiro, c_kind, zqsr_lr)
263	zqsr_hr(:,:)=sf(jp_qsr)%fnow(:,:,1)-zqsr_lr(:,:) ! We get large scale and small scale
264
265	call Shapiro_1D(sf(jp_qlw)%fnow(:,:,1),iter_shapiro, c_kind, zqlw_lr)
266	zqlw_hr(:,:)=sf(jp_qlw)%fnow(:,:,1)-zqlw_lr(:,:) ! We get large scale and small scale
267
268	z_qsr1(:,:)=zqsr_lr(:,:)*sf(jp_swc)%fnow(:,:,1) + zqsr_hr(:,:)
269	z_qlw1(:,:)=zqlw_lr(:,:)*sf(jp_lwc)%fnow(:,:,1) + zqlw_hr(:,:)
270
271	DO jj=1,jpj
272	DO ji=1,jpi
273	z_qsr1(ji,jj)=max(z_qsr1(ji,jj),0.0)
274	z_qlw1(ji,jj)=max(z_qlw1(ji,jj),0.0)
275	END DO
276	END DO
277
278	ENDIF
279
280	IF( ln_coprecip ) THEN
281
282	call Shapiro_1D(sf(jp_prec)%fnow(:,:,1),iter_shapiro,c_kind,zprec_lr)
283	zprec_hr(:,:)=sf(jp_prec)%fnow(:,:,1)-zprec_lr(:,:) ! We get large scale and small scale
284
285	DO jj=1,jpj
286	DO ji=1,jpi
287	IF( zprec_lr(ji,jj) .GT. 0._wp ) THEN
288	ztmp = LOG( ( 1000._wp + sf(jp_prc)%fnow(ji,jj,1) ) * EXP( zprec_lr(ji,jj) ) / 1000._wp )
289	sf(jp_prec)%fnow(ji,jj,1) = max(ztmp+zprec_hr(ji,jj),0.0)
290	ENDIF
291	END DO
292	END DO
293
294	ENDIF
295
296	IF ( ln_corad_antar ) THEN ! correction of SW and LW in the Southern Ocean
297
298	z_qsr(:,:)=0.8*z_qsr1(:,:)
299	z_qlw(:,:)=1.1*z_qlw1(:,:)
300	xyt(:,:) = 0.e0
301	zzlat1 = -65.
302	zzlat2 = -60.
303	DO jj = 1, jpj
304	DO ji = 1, jpi
305	zzlat = gphit(ji,jj)
306	IF ( zzlat >= zzlat1 .AND. zzlat <= zzlat2 ) THEN
307	xyt(ji,jj) = (zzlat2-zzlat)/(zzlat2-zzlat1)
308	ELSE IF ( zzlat < zzlat1 ) THEN
309	xyt(ji,jj) = 1
310	ENDIF
311	END DO
312	END DO
313	z_qsr1(:,:)=z_qsr(:,:)xyt(:,:)+(1.0-xyt(:,:))z_qsr1(:,:)
314	z_qlw1(:,:)=z_qlw(:,:)xyt(:,:)+(1.0-xyt(:,:))z_qlw1(:,:)
315
316	ENDIF
317
318	IF ( ln_corad_arc ) THEN ! correction of SW in the Arctic Ocean
319
320	z_qsr(:,:)=0.7*z_qsr1(:,:)
321	xyt(:,:) = 0.e0
322	zzlat1 = 78.
323	zzlat2 = 82.
324	DO jj = 1, jpj
325	DO ji = 1, jpi
326	zzlat = gphit(ji,jj)
327	IF ( zzlat >= zzlat1 .AND. zzlat <= zzlat2 ) THEN
328	xyt(ji,jj) = (zzlat-zzlat1)/(zzlat2-zzlat1)
329	ELSE IF ( zzlat > zzlat2 ) THEN
330	xyt(ji,jj) = 1
331	ENDIF
332	END DO
333	END DO
334	z_qsr1(:,:)=z_qsr(:,:)xyt(:,:)+(1.0-xyt(:,:))z_qsr1(:,:)
335
336	ENDIF
337
338	sf(jp_qsr)%fnow(:,:,1)=z_qsr1(:,:)
339	sf(jp_qlw)%fnow(:,:,1)=z_qlw1(:,:)
340
341	IF ( ln_cotair_arc ) THEN ! correction of Air Temperature in the Arctic Ocean
342
343	z_tair(:,:)=sf(jp_tair)%fnow(:,:,1) - 2.0
344	xyt(:,:) = 0.e0 ; zzlat1 = 78. ; zzlat2 = 82.
345	DO jj = 1, jpj
346	DO ji = 1, jpi
347	zzlat = gphit(ji,jj) ; zfrld=frld(ji,jj)
348	IF ( zzlat >= zzlat1 .AND. zzlat <= zzlat2 .AND. zfrld < 0.85 ) THEN
349	xyt(ji,jj) = (zzlat-zzlat1)/(zzlat2-zzlat1)
350	ELSE IF ( zzlat > zzlat2 .AND. zfrld < 0.85 ) THEN
351	xyt(ji,jj) = 1
352	ENDIF
353	END DO
354	END DO
355	sf(jp_tair)%fnow(:,:,1)=z_tair(:,:)xyt(:,:)+(1.0-xyt(:,:))sf(jp_tair)%fnow(:,:,1)
356
357	ENDIF
358
359	#endif
360
361	CALL blk_oce_core( sf, sst_m, ssu_m, ssv_m ) ! compute the surface ocean fluxes using CLIO bulk formulea
362
363	ENDIF
364	! ! using CORE bulk formulea
365	END SUBROUTINE sbc_blk_core
366
367
368	SUBROUTINE blk_oce_core( sf, pst, pu, pv )
369	!!---------------------------------------------------------------------
370	!! * ROUTINE blk_core *
371	!!
372	!! ** Purpose : provide the momentum, heat and freshwater fluxes at
373	!! the ocean surface at each time step
374	!!
375	!! ** Method : CORE bulk formulea for the ocean using atmospheric
376	!! fields read in sbc_read
377	!!
378	!! ** Outputs : - utau : i-component of the stress at U-point (N/m2)
379	!! - vtau : j-component of the stress at V-point (N/m2)
380	!! - taum : Wind stress module at T-point (N/m2)
381	!! - wndm : Wind speed module at T-point (m/s)
382	!! - qsr : Solar heat flux over the ocean (W/m2)
383	!! - qns : Non Solar heat flux over the ocean (W/m2)
384	!! - evap : Evaporation over the ocean (kg/m2/s)
385	!! - emp(s) : evaporation minus precipitation (kg/m2/s)
386	!!
387	!! ** Nota : sf has to be a dummy argument for AGRIF on NEC
388	!!---------------------------------------------------------------------
389	USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released
390	USE wrk_nemo, ONLY: zwnd_i => wrk_2d_1 , zwnd_j => wrk_2d_2 ! wind speed components at T-point
391	USE wrk_nemo, ONLY: zqsatw => wrk_2d_3 ! specific humidity at pst
392	USE wrk_nemo, ONLY: zqlw => wrk_2d_4 , zqsb => wrk_2d_5 ! long wave and sensible heat fluxes
393	USE wrk_nemo, ONLY: zqla => wrk_2d_6 , zevap => wrk_2d_7 ! latent heat fluxes and evaporation
394	USE wrk_nemo, ONLY: Cd => wrk_2d_8 ! transfer coefficient for momentum (tau)
395	USE wrk_nemo, ONLY: Ch => wrk_2d_9 ! transfer coefficient for sensible heat (Q_sens)
396	USE wrk_nemo, ONLY: Ce => wrk_2d_10 ! transfer coefficient for evaporation (Q_lat)
397	USE wrk_nemo, ONLY: zst => wrk_2d_11 ! surface temperature in Kelvin
398	USE wrk_nemo, ONLY: zt_zu => wrk_2d_12 ! air temperature at wind speed height
399	USE wrk_nemo, ONLY: zq_zu => wrk_2d_13 ! air spec. hum. at wind speed height
400	!
401	TYPE(fld), INTENT(in), DIMENSION(:) :: sf ! input data
402	REAL(wp) , INTENT(in), DIMENSION(:,:) :: pst ! surface temperature [Celcius]
403	REAL(wp) , INTENT(in), DIMENSION(:,:) :: pu ! surface current at U-point (i-component) [m/s]
404	REAL(wp) , INTENT(in), DIMENSION(:,:) :: pv ! surface current at V-point (j-component) [m/s]
405	!
406	INTEGER :: ji, jj ! dummy loop indices
407	REAL(wp) :: zcoef_qsatw, zztmp ! local variable
408	!!---------------------------------------------------------------------
409
410	IF( wrk_in_use(2, 1,2,3,4,5,6,7,8,9,10,11,12,13) ) THEN
411	CALL ctl_stop('blk_oce_core: requested workspace arrays unavailable') ; RETURN
412	ENDIF
413	!
414	! local scalars ( place there for vector optimisation purposes)
415	zcoef_qsatw = 0.98 * 640380. / rhoa
416
417	zst(:,:) = pst(:,:) + rt0 ! converte Celcius to Kelvin (and set minimum value far above 0 K)
418
419	! ----------------------------------------------------------------------------- !
420	! 0 Wind components and module at T-point relative to the moving ocean !
421	! ----------------------------------------------------------------------------- !
422
423	! ... components ( U10m - U_oce ) at T-point (unmasked)
424	zwnd_i(:,:) = 0.e0
425	zwnd_j(:,:) = 0.e0
426	#if defined key_vectopt_loop
427	!CDIR COLLAPSE
428	#endif
429	DO jj = 2, jpjm1
430	DO ji = fs_2, fs_jpim1 ! vect. opt.
431	zwnd_i(ji,jj) = ( sf(jp_wndi)%fnow(ji,jj,1) - 0.5 * ( pu(ji-1,jj ) + pu(ji,jj) ) )
432	zwnd_j(ji,jj) = ( sf(jp_wndj)%fnow(ji,jj,1) - 0.5 * ( pv(ji ,jj-1) + pv(ji,jj) ) )
433	END DO
434	END DO
435	CALL lbc_lnk( zwnd_i(:,:) , 'T', -1. )
436	CALL lbc_lnk( zwnd_j(:,:) , 'T', -1. )
437	! ... scalar wind ( = \| U10m - U_oce \| ) at T-point (masked)
438	!CDIR NOVERRCHK
439	!CDIR COLLAPSE
440	wndm(:,:) = SQRT( zwnd_i(:,:) * zwnd_i(:,:) &
441	& + zwnd_j(:,:) * zwnd_j(:,:) ) * tmask(:,:,1)
442
443	! ----------------------------------------------------------------------------- !
444	! I Radiative FLUXES !
445	! ----------------------------------------------------------------------------- !
446
447	! ocean albedo assumed to be constant + modify now Qsr to include the diurnal cycle ! Short Wave
448	zztmp = 1. - albo
449	IF( ln_dm2dc ) THEN ; qsr(:,:) = zztmp * sbc_dcy( sf(jp_qsr)%fnow(:,:,1) ) * tmask(:,:,1)
450	ELSE ; qsr(:,:) = zztmp * sf(jp_qsr)%fnow(:,:,1) * tmask(:,:,1)
451	ENDIF
452	!CDIR COLLAPSE
453	zqlw(:,:) = ( sf(jp_qlw)%fnow(:,:,1) - Stef * zst(:,:)zst(:,:)zst(:,:)zst(:,:) ) tmask(:,:,1) ! Long Wave
454	! ----------------------------------------------------------------------------- !
455	! II Turbulent FLUXES !
456	! ----------------------------------------------------------------------------- !
457
458	! ... specific humidity at SST and IST
459	!CDIR NOVERRCHK
460	!CDIR COLLAPSE
461	zqsatw(:,:) = zcoef_qsatw * EXP( -5107.4 / zst(:,:) )
462
463	! ... NCAR Bulk formulae, computation of Cd, Ch, Ce at T-point :
464	IF( ln_2m ) THEN
465	!! If air temp. and spec. hum. are given at different height (2m) than wind (10m) :
466	CALL TURB_CORE_2Z(2.,10., zst , sf(jp_tair)%fnow, &
467	& zqsatw, sf(jp_humi)%fnow, wndm, &
468	& Cd , Ch , Ce , &
469	& zt_zu , zq_zu )
470	ELSE
471	!! If air temp. and spec. hum. are given at same height than wind (10m) :
472	!gm bug? at the compiling phase, add a copy in temporary arrays... ==> check perf
473	! CALL TURB_CORE_1Z( 10., zst (:,:), sf(jp_tair)%fnow(:,:), &
474	! & zqsatw(:,:), sf(jp_humi)%fnow(:,:), wndm(:,:), &
475	! & Cd (:,:), Ch (:,:), Ce (:,:) )
476	!gm bug
477	! ARPDBG - this won't compile with gfortran. Fix but check performance
478	! as per comment above.
479	CALL TURB_CORE_1Z( 10., zst , sf(jp_tair)%fnow(:,:,1), &
480	& zqsatw, sf(jp_humi)%fnow(:,:,1), wndm, &
481	& Cd , Ch , Ce )
482	ENDIF
483
484	! ... tau module, i and j component
485	DO jj = 1, jpj
486	DO ji = 1, jpi
487	zztmp = rhoa * wndm(ji,jj) * Cd(ji,jj)
488	taum (ji,jj) = zztmp * wndm (ji,jj)
489	zwnd_i(ji,jj) = zztmp * zwnd_i(ji,jj)
490	zwnd_j(ji,jj) = zztmp * zwnd_j(ji,jj)
491	END DO
492	END DO
493
494	! ... add the HF tau contribution to the wind stress module?
495	IF( lhftau ) THEN
496	!CDIR COLLAPSE
497	#if defined key_orca_r025
498	! Changed!!! Multiply by QSCAT correction
499	zwnd_i(:,:) = zwnd_i(:,:) * sf(jp_tdif)%fnow(:,:,1)
500	zwnd_j(:,:) = zwnd_j(:,:) * sf(jp_tdif)%fnow(:,:,1)
501	#endif
502	taum(:,:) = taum(:,:) + sf(jp_tdif)%fnow(:,:,1)
503	ENDIF
504	CALL iom_put( "taum_oce", taum ) ! output wind stress module
505
506	! ... utau, vtau at U- and V_points, resp.
507	! Note the use of 0.5*(2-umask) in order to unmask the stress along coastlines
508	DO jj = 1, jpjm1
509	DO ji = 1, fs_jpim1
510	utau(ji,jj) = 0.5 * ( 2. - umask(ji,jj,1) ) * ( zwnd_i(ji,jj) + zwnd_i(ji+1,jj ) )
511	vtau(ji,jj) = 0.5 * ( 2. - vmask(ji,jj,1) ) * ( zwnd_j(ji,jj) + zwnd_j(ji ,jj+1) )
512	END DO
513	END DO
514	CALL lbc_lnk( utau(:,:), 'U', -1. )
515	CALL lbc_lnk( vtau(:,:), 'V', -1. )
516
517	! Turbulent fluxes over ocean
518	! -----------------------------
519	IF( ln_2m ) THEN
520	! Values of temp. and hum. adjusted to 10m must be used instead of 2m values
521	zevap(:,:) = MAX( 0.e0, rhoa Ce(:,:)( zqsatw(:,:) - zq_zu(:,:) ) * wndm(:,:) ) ! Evaporation
522	zqsb (:,:) = rhoacpaCh(:,:)( zst (:,:) - zt_zu(:,:) ) wndm(:,:) ! Sensible Heat
523	ELSE
524	!CDIR COLLAPSE
525	zevap(:,:) = MAX( 0.e0, rhoa Ce(:,:)( zqsatw(:,:) - sf(jp_humi)%fnow(:,:,1) ) * wndm(:,:) ) ! Evaporation
526	!CDIR COLLAPSE
527	zqsb (:,:) = rhoacpaCh(:,:)( zst (:,:) - sf(jp_tair)%fnow(:,:,1) ) wndm(:,:) ! Sensible Heat
528	ENDIF
529	!CDIR COLLAPSE
530	zqla (:,:) = Lv * zevap(:,:) ! Latent Heat
531
532	IF(ln_ctl) THEN
533	CALL prt_ctl( tab2d_1=zqla , clinfo1=' blk_oce_core: zqla : ', tab2d_2=Ce , clinfo2=' Ce : ' )
534	CALL prt_ctl( tab2d_1=zqsb , clinfo1=' blk_oce_core: zqsb : ', tab2d_2=Ch , clinfo2=' Ch : ' )
535	CALL prt_ctl( tab2d_1=zqlw , clinfo1=' blk_oce_core: zqlw : ', tab2d_2=qsr, clinfo2=' qsr : ' )
536	CALL prt_ctl( tab2d_1=zqsatw, clinfo1=' blk_oce_core: zqsatw : ', tab2d_2=zst, clinfo2=' zst : ' )
537	CALL prt_ctl( tab2d_1=utau , clinfo1=' blk_oce_core: utau : ', mask1=umask, &
538	& tab2d_2=vtau , clinfo2= ' vtau : ' , mask2=vmask )
539	CALL prt_ctl( tab2d_1=wndm , clinfo1=' blk_oce_core: wndm : ')
540	CALL prt_ctl( tab2d_1=zst , clinfo1=' blk_oce_core: zst : ')
541	ENDIF
542
543	! ----------------------------------------------------------------------------- !
544	! III Total FLUXES !
545	! ----------------------------------------------------------------------------- !
546
547	!CDIR COLLAPSE
548	qns(:,:) = zqlw(:,:) - zqsb(:,:) - zqla(:,:) ! Downward Non Solar flux
549	!CDIR COLLAPSE
550	emp(:,:) = zevap(:,:) - sf(jp_prec)%fnow(:,:,1) * rn_pfac * tmask(:,:,1)
551	!CDIR COLLAPSE
552	emps(:,:) = emp(:,:)
553	!
554	CALL iom_put( "qlw_oce", zqlw ) ! output downward longwave heat over the ocean
555	CALL iom_put( "qsb_oce", - zqsb ) ! output downward sensible heat over the ocean
556	CALL iom_put( "qla_oce", - zqla ) ! output downward latent heat over the ocean
557	CALL iom_put( "qns_oce", qns ) ! output downward non solar heat over the ocean
558	!
559	IF(ln_ctl) THEN
560	CALL prt_ctl(tab2d_1=zqsb , clinfo1=' blk_oce_core: zqsb : ', tab2d_2=zqlw , clinfo2=' zqlw : ')
561	CALL prt_ctl(tab2d_1=zqla , clinfo1=' blk_oce_core: zqla : ', tab2d_2=qsr , clinfo2=' qsr : ')
562	CALL prt_ctl(tab2d_1=pst , clinfo1=' blk_oce_core: pst : ', tab2d_2=emp , clinfo2=' emp : ')
563	CALL prt_ctl(tab2d_1=utau , clinfo1=' blk_oce_core: utau : ', mask1=umask, &
564	& tab2d_2=vtau , clinfo2= ' vtau : ' , mask2=vmask )
565	ENDIF
566	!
567	IF( wrk_not_released(2, 1,2,3,4,5,6,7,8,9,10,11,12,13) ) &
568	CALL ctl_stop('blk_oce_core: failed to release workspace arrays')
569	!
570	END SUBROUTINE blk_oce_core
571
572
573	SUBROUTINE blk_ice_core( pst , pui , pvi , palb , &
574	& p_taui, p_tauj, p_qns , p_qsr, &
575	& p_qla , p_dqns, p_dqla, &
576	& p_tpr , p_spr , &
577	& p_fr1 , p_fr2 , cd_grid, pdim )
578	!!---------------------------------------------------------------------
579	!! * ROUTINE blk_ice_core *
580	!!
581	!! ** Purpose : provide the surface boundary condition over sea-ice
582	!!
583	!! ** Method : compute momentum, heat and freshwater exchanged
584	!! between atmosphere and sea-ice using CORE bulk
585	!! formulea, ice variables and read atmmospheric fields.
586	!! NB: ice drag coefficient is assumed to be a constant
587	!!
588	!! caution : the net upward water flux has with mm/day unit
589	!!---------------------------------------------------------------------
590	USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released
591	USE wrk_nemo, ONLY: z_wnds_t => wrk_2d_1 ! wind speed ( = \| U10m - U_ice \| ) at T-point
592	USE wrk_nemo, ONLY: wrk_3d_4 , wrk_3d_5 , wrk_3d_6 , wrk_3d_7
593	!!
594	REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: pst ! ice surface temperature (>0, =rt0 over land) [Kelvin]
595	REAL(wp), DIMENSION(:,:) , INTENT(in ) :: pui ! ice surface velocity (i- and i- components [m/s]
596	REAL(wp), DIMENSION(:,:) , INTENT(in ) :: pvi ! at I-point (B-grid) or U & V-point (C-grid)
597	REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: palb ! ice albedo (clear sky) (alb_ice_cs) [%]
598	REAL(wp), DIMENSION(:,:) , INTENT( out) :: p_taui ! i- & j-components of surface ice stress [N/m2]
599	REAL(wp), DIMENSION(:,:) , INTENT( out) :: p_tauj ! at I-point (B-grid) or U & V-point (C-grid)
600	REAL(wp), DIMENSION(:,:,:), INTENT( out) :: p_qns ! non solar heat flux over ice (T-point) [W/m2]
601	REAL(wp), DIMENSION(:,:,:), INTENT( out) :: p_qsr ! solar heat flux over ice (T-point) [W/m2]
602	REAL(wp), DIMENSION(:,:,:), INTENT( out) :: p_qla ! latent heat flux over ice (T-point) [W/m2]
603	REAL(wp), DIMENSION(:,:,:), INTENT( out) :: p_dqns ! non solar heat sensistivity (T-point) [W/m2]
604	REAL(wp), DIMENSION(:,:,:), INTENT( out) :: p_dqla ! latent heat sensistivity (T-point) [W/m2]
605	REAL(wp), DIMENSION(:,:) , INTENT( out) :: p_tpr ! total precipitation (T-point) [Kg/m2/s]
606	REAL(wp), DIMENSION(:,:) , INTENT( out) :: p_spr ! solid precipitation (T-point) [Kg/m2/s]
607	REAL(wp), DIMENSION(:,:) , INTENT( out) :: p_fr1 ! 1sr fraction of qsr penetration in ice (T-point) [%]
608	REAL(wp), DIMENSION(:,:) , INTENT( out) :: p_fr2 ! 2nd fraction of qsr penetration in ice (T-point) [%]
609	CHARACTER(len=1) , INTENT(in ) :: cd_grid ! ice grid ( C or B-grid)
610	INTEGER , INTENT(in ) :: pdim ! number of ice categories
611	!!
612	INTEGER :: ji, jj, jl ! dummy loop indices
613	INTEGER :: ijpl ! number of ice categories (size of 3rd dim of input arrays)
614	REAL(wp) :: zst2, zst3
615	REAL(wp) :: zcoef_wnorm, zcoef_wnorm2, zcoef_dqlw, zcoef_dqla, zcoef_dqsb
616	REAL(wp) :: zztmp ! temporary variable
617	REAL(wp) :: zcoef_frca ! fractional cloud amount
618	REAL(wp) :: zwnorm_f, zwndi_f , zwndj_f ! relative wind module and components at F-point
619	REAL(wp) :: zwndi_t , zwndj_t ! relative wind components at T-point
620	!!
621	REAL(wp), DIMENSION(:,:,:), POINTER :: z_qlw ! long wave heat flux over ice
622	REAL(wp), DIMENSION(:,:,:), POINTER :: z_qsb ! sensible heat flux over ice
623	REAL(wp), DIMENSION(:,:,:), POINTER :: z_dqlw ! long wave heat sensitivity over ice
624	REAL(wp), DIMENSION(:,:,:), POINTER :: z_dqsb ! sensible heat sensitivity over ice
625	!!---------------------------------------------------------------------
626
627	ijpl = pdim ! number of ice categories
628
629	! Set-up access to workspace arrays
630	IF( wrk_in_use(2, 1) .OR. wrk_in_use(3, 4,5,6,7) ) THEN
631	CALL ctl_stop('blk_ice_core: requested workspace arrays unavailable') ; RETURN
632	ELSE IF(ijpl > jpk) THEN
633	CALL ctl_stop('blk_ice_core: no. of ice categories > jpk so wrk_nemo 3D workspaces cannot be used.')
634	RETURN
635	END IF
636	! Set-up pointers to sub-arrays of workspaces
637	z_qlw => wrk_3d_4(:,:,1:ijpl)
638	z_qsb => wrk_3d_5(:,:,1:ijpl)
639	z_dqlw => wrk_3d_6(:,:,1:ijpl)
640	z_dqsb => wrk_3d_7(:,:,1:ijpl)
641
642	! local scalars ( place there for vector optimisation purposes)
643	zcoef_wnorm = rhoa * Cice
644	zcoef_wnorm2 = rhoa * Cice * 0.5
645	zcoef_dqlw = 4.0 * 0.95 * Stef
646	zcoef_dqla = -Ls * Cice * 11637800. * (-5897.8)
647	zcoef_dqsb = rhoa * cpa * Cice
648	zcoef_frca = 1.0 - 0.3
649
650	!!gm brutal....
651	z_wnds_t(:,:) = 0.e0
652	p_taui (:,:) = 0.e0
653	p_tauj (:,:) = 0.e0
654	!!gm end
655
656	#if defined key_lim3
657	tatm_ice(:,:) = sf(jp_tair)%fnow(:,:,1) ! LIM3: make Tair available in sea-ice. WARNING allocated after call to ice_init
658	#endif
659	! ----------------------------------------------------------------------------- !
660	! Wind components and module relative to the moving ocean ( U10m - U_ice ) !
661	! ----------------------------------------------------------------------------- !
662	SELECT CASE( cd_grid )
663	CASE( 'I' ) ! B-grid ice dynamics : I-point (i.e. F-point with sea-ice indexation)
664	! and scalar wind at T-point ( = \| U10m - U_ice \| ) (masked)
665	!CDIR NOVERRCHK
666	DO jj = 2, jpjm1
667	DO ji = 2, jpim1 ! B grid : NO vector opt
668	! ... scalar wind at I-point (fld being at T-point)
669	zwndi_f = 0.25 * ( sf(jp_wndi)%fnow(ji-1,jj ,1) + sf(jp_wndi)%fnow(ji ,jj ,1) &
670	& + sf(jp_wndi)%fnow(ji-1,jj-1,1) + sf(jp_wndi)%fnow(ji ,jj-1,1) ) - pui(ji,jj)
671	zwndj_f = 0.25 * ( sf(jp_wndj)%fnow(ji-1,jj ,1) + sf(jp_wndj)%fnow(ji ,jj ,1) &
672	& + sf(jp_wndj)%fnow(ji-1,jj-1,1) + sf(jp_wndj)%fnow(ji ,jj-1,1) ) - pvi(ji,jj)
673	zwnorm_f = zcoef_wnorm * SQRT( zwndi_f * zwndi_f + zwndj_f * zwndj_f )
674	! ... ice stress at I-point
675	p_taui(ji,jj) = zwnorm_f * zwndi_f
676	p_tauj(ji,jj) = zwnorm_f * zwndj_f
677	! ... scalar wind at T-point (fld being at T-point)
678	zwndi_t = sf(jp_wndi)%fnow(ji,jj,1) - 0.25 * ( pui(ji,jj+1) + pui(ji+1,jj+1) &
679	& + pui(ji,jj ) + pui(ji+1,jj ) )
680	zwndj_t = sf(jp_wndj)%fnow(ji,jj,1) - 0.25 * ( pvi(ji,jj+1) + pvi(ji+1,jj+1) &
681	& + pvi(ji,jj ) + pvi(ji+1,jj ) )
682	z_wnds_t(ji,jj) = SQRT( zwndi_t * zwndi_t + zwndj_t * zwndj_t ) * tmask(ji,jj,1)
683	END DO
684	END DO
685	CALL lbc_lnk( p_taui , 'I', -1. )
686	CALL lbc_lnk( p_tauj , 'I', -1. )
687	CALL lbc_lnk( z_wnds_t, 'T', 1. )
688	!
689	CASE( 'C' ) ! C-grid ice dynamics : U & V-points (same as ocean)
690	#if defined key_vectopt_loop
691	!CDIR COLLAPSE
692	#endif
693	DO jj = 2, jpj
694	DO ji = fs_2, jpi ! vect. opt.
695	zwndi_t = ( sf(jp_wndi)%fnow(ji,jj,1) - 0.5 * ( pui(ji-1,jj ) + pui(ji,jj) ) )
696	zwndj_t = ( sf(jp_wndj)%fnow(ji,jj,1) - 0.5 * ( pvi(ji ,jj-1) + pvi(ji,jj) ) )
697	z_wnds_t(ji,jj) = SQRT( zwndi_t * zwndi_t + zwndj_t * zwndj_t ) * tmask(ji,jj,1)
698	END DO
699	END DO
700	#if defined key_vectopt_loop
701	!CDIR COLLAPSE
702	#endif
703	DO jj = 2, jpjm1
704	DO ji = fs_2, fs_jpim1 ! vect. opt.
705	p_taui(ji,jj) = zcoef_wnorm2 * ( z_wnds_t(ji+1,jj ) + z_wnds_t(ji,jj) ) &
706	& * ( 0.5 * (sf(jp_wndi)%fnow(ji+1,jj,1) + sf(jp_wndi)%fnow(ji,jj,1) ) - pui(ji,jj) )
707	p_tauj(ji,jj) = zcoef_wnorm2 * ( z_wnds_t(ji,jj+1 ) + z_wnds_t(ji,jj) ) &
708	& * ( 0.5 * (sf(jp_wndj)%fnow(ji,jj+1,1) + sf(jp_wndj)%fnow(ji,jj,1) ) - pvi(ji,jj) )
709	END DO
710	END DO
711	CALL lbc_lnk( p_taui , 'U', -1. )
712	CALL lbc_lnk( p_tauj , 'V', -1. )
713	CALL lbc_lnk( z_wnds_t, 'T', 1. )
714	!
715	END SELECT
716
717	zztmp = 1. / ( 1. - albo )
718	! ! ========================== !
719	DO jl = 1, ijpl ! Loop over ice categories !
720	! ! ========================== !
721	!CDIR NOVERRCHK
722	!CDIR COLLAPSE
723	DO jj = 1 , jpj
724	!CDIR NOVERRCHK
725	DO ji = 1, jpi
726	! ----------------------------!
727	! I Radiative FLUXES !
728	! ----------------------------!
729	zst2 = pst(ji,jj,jl) * pst(ji,jj,jl)
730	zst3 = pst(ji,jj,jl) * zst2
731	! Short Wave (sw)
732	p_qsr(ji,jj,jl) = zztmp * ( 1. - palb(ji,jj,jl) ) * qsr(ji,jj)
733	! Long Wave (lw)
734	z_qlw(ji,jj,jl) = 0.95 * ( sf(jp_qlw)%fnow(ji,jj,1) - Stef * pst(ji,jj,jl) * zst3 ) * tmask(ji,jj,1)
735	! lw sensitivity
736	z_dqlw(ji,jj,jl) = zcoef_dqlw * zst3
737
738	! ----------------------------!
739	! II Turbulent FLUXES !
740	! ----------------------------!
741
742	! ... turbulent heat fluxes
743	! Sensible Heat
744	z_qsb(ji,jj,jl) = rhoa * cpa * Cice * z_wnds_t(ji,jj) * ( pst(ji,jj,jl) - sf(jp_tair)%fnow(ji,jj,1) )
745	! Latent Heat
746	p_qla(ji,jj,jl) = MAX( 0.e0, rhoa * Ls * Cice * z_wnds_t(ji,jj) &
747	& * ( 11637800. * EXP( -5897.8 / pst(ji,jj,jl) ) / rhoa - sf(jp_humi)%fnow(ji,jj,1) ) )
748	! Latent heat sensitivity for ice (Dqla/Dt)
749	p_dqla(ji,jj,jl) = zcoef_dqla * z_wnds_t(ji,jj) / ( zst2 ) * EXP( -5897.8 / pst(ji,jj,jl) )
750	! Sensible heat sensitivity (Dqsb_ice/Dtn_ice)
751	z_dqsb(ji,jj,jl) = zcoef_dqsb * z_wnds_t(ji,jj)
752
753	! ----------------------------!
754	! III Total FLUXES !
755	! ----------------------------!
756	! Downward Non Solar flux
757	p_qns (ji,jj,jl) = z_qlw (ji,jj,jl) - z_qsb (ji,jj,jl) - p_qla (ji,jj,jl)
758	! Total non solar heat flux sensitivity for ice
759	p_dqns(ji,jj,jl) = - ( z_dqlw(ji,jj,jl) + z_dqsb(ji,jj,jl) + p_dqla(ji,jj,jl) )
760	END DO
761	!
762	END DO
763	!
764	END DO
765	!
766	!--------------------------------------------------------------------
767	! FRACTIONs of net shortwave radiation which is not absorbed in the
768	! thin surface layer and penetrates inside the ice cover
769	! ( Maykut and Untersteiner, 1971 ; Ebert and Curry, 1993 )
770
771	!CDIR COLLAPSE
772	p_fr1(:,:) = ( 0.18 * ( 1.0 - zcoef_frca ) + 0.35 * zcoef_frca )
773	!CDIR COLLAPSE
774	p_fr2(:,:) = ( 0.82 * ( 1.0 - zcoef_frca ) + 0.65 * zcoef_frca )
775
776	!CDIR COLLAPSE
777	p_tpr(:,:) = sf(jp_prec)%fnow(:,:,1) * rn_pfac ! total precipitation [kg/m2/s]
778	!CDIR COLLAPSE
779	p_spr(:,:) = sf(jp_snow)%fnow(:,:,1) * rn_pfac ! solid precipitation [kg/m2/s]
780	CALL iom_put( 'snowpre', p_spr ) ! Snow precipitation
781	!
782	IF(ln_ctl) THEN
783	CALL prt_ctl(tab3d_1=p_qla , clinfo1=' blk_ice_core: p_qla : ', tab3d_2=z_qsb , clinfo2=' z_qsb : ', kdim=ijpl)
784	CALL prt_ctl(tab3d_1=z_qlw , clinfo1=' blk_ice_core: z_qlw : ', tab3d_2=p_dqla , clinfo2=' p_dqla : ', kdim=ijpl)
785	CALL prt_ctl(tab3d_1=z_dqsb , clinfo1=' blk_ice_core: z_dqsb : ', tab3d_2=z_dqlw , clinfo2=' z_dqlw : ', kdim=ijpl)
786	CALL prt_ctl(tab3d_1=p_dqns , clinfo1=' blk_ice_core: p_dqns : ', tab3d_2=p_qsr , clinfo2=' p_qsr : ', kdim=ijpl)
787	CALL prt_ctl(tab3d_1=pst , clinfo1=' blk_ice_core: pst : ', tab3d_2=p_qns , clinfo2=' p_qns : ', kdim=ijpl)
788	CALL prt_ctl(tab2d_1=p_tpr , clinfo1=' blk_ice_core: p_tpr : ', tab2d_2=p_spr , clinfo2=' p_spr : ')
789	CALL prt_ctl(tab2d_1=p_taui , clinfo1=' blk_ice_core: p_taui : ', tab2d_2=p_tauj , clinfo2=' p_tauj : ')
790	CALL prt_ctl(tab2d_1=z_wnds_t, clinfo1=' blk_ice_core: z_wnds_t : ')
791	ENDIF
792
793	IF( wrk_not_released(2, 1) .OR. &
794	wrk_not_released(3, 4,5,6,7) ) CALL ctl_stop('blk_ice_core: failed to release workspace arrays')
795	!
796	END SUBROUTINE blk_ice_core
797
798
799	SUBROUTINE TURB_CORE_1Z(zu, sst, T_a, q_sat, q_a, &
800	& dU , Cd , Ch , Ce )
801	!!----------------------------------------------------------------------
802	!! * ROUTINE turb_core *
803	!!
804	!! ** Purpose : Computes turbulent transfert coefficients of surface
805	!! fluxes according to Large & Yeager (2004)
806	!!
807	!! ** Method : I N E R T I A L D I S S I P A T I O N M E T H O D
808	!! Momentum, Latent and sensible heat exchange coefficients
809	!! Caution: this procedure should only be used in cases when air
810	!! temperature (T_air), air specific humidity (q_air) and wind (dU)
811	!! are provided at the same height 'zzu'!
812	!!
813	!! References : Large & Yeager, 2004 : ???
814	!!----------------------------------------------------------------------
815	USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released, iwrk_in_use, iwrk_not_released
816	USE wrk_nemo, ONLY: dU10 => wrk_2d_14 ! dU [m/s]
817	USE wrk_nemo, ONLY: dT => wrk_2d_15 ! air/sea temperature difference [K]
818	USE wrk_nemo, ONLY: dq => wrk_2d_16 ! air/sea humidity difference [K]
819	USE wrk_nemo, ONLY: Cd_n10 => wrk_2d_17 ! 10m neutral drag coefficient
820	USE wrk_nemo, ONLY: Ce_n10 => wrk_2d_18 ! 10m neutral latent coefficient
821	USE wrk_nemo, ONLY: Ch_n10 => wrk_2d_19 ! 10m neutral sensible coefficient
822	USE wrk_nemo, ONLY: sqrt_Cd_n10 => wrk_2d_20 ! root square of Cd_n10
823	USE wrk_nemo, ONLY: sqrt_Cd => wrk_2d_21 ! root square of Cd
824	USE wrk_nemo, ONLY: T_vpot => wrk_2d_22 ! virtual potential temperature [K]
825	USE wrk_nemo, ONLY: T_star => wrk_2d_23 ! turbulent scale of tem. fluct.
826	USE wrk_nemo, ONLY: q_star => wrk_2d_24 ! turbulent humidity of temp. fluct.
827	USE wrk_nemo, ONLY: U_star => wrk_2d_25 ! turb. scale of velocity fluct.
828	USE wrk_nemo, ONLY: L => wrk_2d_26 ! Monin-Obukov length [m]
829	USE wrk_nemo, ONLY: zeta => wrk_2d_27 ! stability parameter at height zu
830	USE wrk_nemo, ONLY: U_n10 => wrk_2d_28 ! neutral wind velocity at 10m [m]
831	USE wrk_nemo, ONLY: xlogt => wrk_2d_29, xct => wrk_2d_30, &
832	zpsi_h => wrk_2d_31, zpsi_m => wrk_2d_32
833	USE wrk_nemo, ONLY: stab => iwrk_2d_1 ! 1st guess stability test integer
834	!
835	REAL(wp) , INTENT(in ) :: zu ! altitude of wind measurement [m]
836	REAL(wp), DIMENSION(:,:), INTENT(in ) :: sst ! sea surface temperature [Kelvin]
837	REAL(wp), DIMENSION(:,:), INTENT(in ) :: T_a ! potential air temperature [Kelvin]
838	REAL(wp), DIMENSION(:,:), INTENT(in ) :: q_sat ! sea surface specific humidity [kg/kg]
839	REAL(wp), DIMENSION(:,:), INTENT(in ) :: q_a ! specific air humidity [kg/kg]
840	REAL(wp), DIMENSION(:,:), INTENT(in ) :: dU ! wind module \|U(zu)-U(0)\| [m/s]
841	REAL(wp), DIMENSION(:,:), INTENT( out) :: Cd ! transfert coefficient for momentum (tau)
842	REAL(wp), DIMENSION(:,:), INTENT( out) :: Ch ! transfert coefficient for temperature (Q_sens)
843	REAL(wp), DIMENSION(:,:), INTENT( out) :: Ce ! transfert coefficient for evaporation (Q_lat)
844	!!
845	INTEGER :: j_itt
846	INTEGER , PARAMETER :: nb_itt = 3
847	REAL(wp), PARAMETER :: grav = 9.8 ! gravity
848	REAL(wp), PARAMETER :: kappa = 0.4 ! von Karman s constant
849	!!----------------------------------------------------------------------
850
851	IF( wrk_in_use(2, 14,15,16,17,18,19, &
852	20,21,22,23,24,25,26,27,28,29, &
853	30,31,32) .OR. &
854	iwrk_in_use(2, 1) ) THEN
855	CALL ctl_stop('TURB_CORE_1Z: requested workspace arrays unavailable') ; RETURN
856	ENDIF
857
858	!! * Start
859	!! Air/sea differences
860	dU10 = max(0.5, dU) ! we don't want to fall under 0.5 m/s
861	dT = T_a - sst ! assuming that T_a is allready the potential temp. at zzu
862	dq = q_a - q_sat
863	!!
864	!! Virtual potential temperature
865	T_vpot = T_a(1. + 0.608q_a)
866	!!
867	!! Neutral Drag Coefficient
868	stab = 0.5 + sign(0.5,dT) ! stable : stab = 1 ; unstable : stab = 0
869	Cd_n10 = 1E-3 * ( 2.7/dU10 + 0.142 + dU10/13.09 ) ! L & Y eq. (6a)
870	sqrt_Cd_n10 = sqrt(Cd_n10)
871	Ce_n10 = 1E-3 * ( 34.6 * sqrt_Cd_n10 ) ! L & Y eq. (6b)
872	Ch_n10 = 1E-3sqrt_Cd_n10(18stab + 32.7(1-stab)) ! L & Y eq. (6c), (6d)
873	!!
874	!! Initializing transfert coefficients with their first guess neutral equivalents :
875	Cd = Cd_n10 ; Ce = Ce_n10 ; Ch = Ch_n10 ; sqrt_Cd = sqrt(Cd)
876
877	!! * Now starting iteration loop
878	DO j_itt=1, nb_itt
879	!! Turbulent scales :
880	U_star = sqrt_Cd*dU10 ! L & Y eq. (7a)
881	T_star = Ch/sqrt_Cd*dT ! L & Y eq. (7b)
882	q_star = Ce/sqrt_Cd*dq ! L & Y eq. (7c)
883
884	!! Estimate the Monin-Obukov length :
885	L = (U_star*2)/( kappagrav*(T_star/T_vpot + q_star/(q_a + 1./0.608)) )
886
887	!! Stability parameters :
888	zeta = zu/L ; zeta = sign( min(abs(zeta),10.0), zeta )
889	zpsi_h = psi_h(zeta)
890	zpsi_m = psi_m(zeta)
891
892	!! Shifting the wind speed to 10m and neutral stability :
893	U_n10 = dU101./(1. + sqrt_Cd_n10/kappa(log(zu/10.) - zpsi_m)) ! L & Y eq. (9a)
894
895	!! Updating the neutral 10m transfer coefficients :
896	Cd_n10 = 1E-3 * (2.7/U_n10 + 0.142 + U_n10/13.09) ! L & Y eq. (6a)
897	sqrt_Cd_n10 = sqrt(Cd_n10)
898	Ce_n10 = 1E-3 * (34.6 * sqrt_Cd_n10) ! L & Y eq. (6b)
899	stab = 0.5 + sign(0.5,zeta)
900	Ch_n10 = 1E-3sqrt_Cd_n10(18.stab + 32.7(1-stab)) ! L & Y eq. (6c), (6d)
901
902	!! Shifting the neutral 10m transfer coefficients to ( zu , zeta ) :
903	!!
904	xct = 1. + sqrt_Cd_n10/kappa*(log(zu/10) - zpsi_m)
905	Cd = Cd_n10/(xct*xct) ; sqrt_Cd = sqrt(Cd)
906	!!
907	xlogt = log(zu/10.) - zpsi_h
908	!!
909	xct = 1. + Ch_n10*xlogt/kappa/sqrt_Cd_n10
910	Ch = Ch_n10*sqrt_Cd/sqrt_Cd_n10/xct
911	!!
912	xct = 1. + Ce_n10*xlogt/kappa/sqrt_Cd_n10
913	Ce = Ce_n10*sqrt_Cd/sqrt_Cd_n10/xct
914	!!
915	END DO
916	!!
917	IF( wrk_not_released(2, 14,15,16,17,18,19, &
918	& 20,21,22,23,24,25,26,27,28,29, &
919	& 30,31,32 ) .OR. &
920	iwrk_not_released(2, 1) ) &
921	CALL ctl_stop('TURB_CORE_1Z: failed to release workspace arrays')
922	!
923	END SUBROUTINE TURB_CORE_1Z
924
925
926	SUBROUTINE TURB_CORE_2Z(zt, zu, sst, T_zt, q_sat, q_zt, dU, Cd, Ch, Ce, T_zu, q_zu)
927	!!----------------------------------------------------------------------
928	!! * ROUTINE turb_core *
929	!!
930	!! ** Purpose : Computes turbulent transfert coefficients of surface
931	!! fluxes according to Large & Yeager (2004).
932	!!
933	!! ** Method : I N E R T I A L D I S S I P A T I O N M E T H O D
934	!! Momentum, Latent and sensible heat exchange coefficients
935	!! Caution: this procedure should only be used in cases when air
936	!! temperature (T_air) and air specific humidity (q_air) are at 2m
937	!! whereas wind (dU) is at 10m.
938	!!
939	!! References : Large & Yeager, 2004 : ???
940	!!----------------------------------------------------------------------
941	USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released, iwrk_in_use, iwrk_not_released
942	USE wrk_nemo, ONLY: dU10 => wrk_2d_14 ! dU [m/s]
943	USE wrk_nemo, ONLY: dT => wrk_2d_15 ! air/sea temperature difference [K]
944	USE wrk_nemo, ONLY: dq => wrk_2d_16 ! air/sea humidity difference [K]
945	USE wrk_nemo, ONLY: Cd_n10 => wrk_2d_17 ! 10m neutral drag coefficient
946	USE wrk_nemo, ONLY: Ce_n10 => wrk_2d_18 ! 10m neutral latent coefficient
947	USE wrk_nemo, ONLY: Ch_n10 => wrk_2d_19 ! 10m neutral sensible coefficient
948	USE wrk_nemo, ONLY: sqrt_Cd_n10 => wrk_2d_20 ! root square of Cd_n10
949	USE wrk_nemo, ONLY: sqrt_Cd => wrk_2d_21 ! root square of Cd
950	USE wrk_nemo, ONLY: T_vpot => wrk_2d_22 ! virtual potential temperature [K]
951	USE wrk_nemo, ONLY: T_star => wrk_2d_23 ! turbulent scale of tem. fluct.
952	USE wrk_nemo, ONLY: q_star => wrk_2d_24 ! turbulent humidity of temp. fluct.
953	USE wrk_nemo, ONLY: U_star => wrk_2d_25 ! turb. scale of velocity fluct.
954	USE wrk_nemo, ONLY: L => wrk_2d_26 ! Monin-Obukov length [m]
955	USE wrk_nemo, ONLY: zeta_u => wrk_2d_27 ! stability parameter at height zu
956	USE wrk_nemo, ONLY: zeta_t => wrk_2d_28 ! stability parameter at height zt
957	USE wrk_nemo, ONLY: U_n10 => wrk_2d_29 ! neutral wind velocity at 10m [m]
958	USE wrk_nemo, ONLY: xlogt => wrk_2d_30, xct => wrk_2d_31, zpsi_hu => wrk_2d_32, zpsi_ht => wrk_2d_33, zpsi_m => wrk_2d_34
959	USE wrk_nemo, ONLY: stab => iwrk_2d_1 ! 1st guess stability test integer
960	!!
961	REAL(wp), INTENT(in) :: &
962	zt, & ! height for T_zt and q_zt [m]
963	zu ! height for dU [m]
964	REAL(wp), INTENT(in), DIMENSION(jpi,jpj) :: &
965	sst, & ! sea surface temperature [Kelvin]
966	T_zt, & ! potential air temperature [Kelvin]
967	q_sat, & ! sea surface specific humidity [kg/kg]
968	q_zt, & ! specific air humidity [kg/kg]
969	dU ! relative wind module \|U(zu)-U(0)\| [m/s]
970	REAL(wp), INTENT(out), DIMENSION(jpi,jpj) :: &
971	Cd, & ! transfer coefficient for momentum (tau)
972	Ch, & ! transfer coefficient for sensible heat (Q_sens)
973	Ce, & ! transfert coefficient for evaporation (Q_lat)
974	T_zu, & ! air temp. shifted at zu [K]
975	q_zu ! spec. hum. shifted at zu [kg/kg]
976
977	INTEGER :: j_itt
978	INTEGER, PARAMETER :: nb_itt = 3 ! number of itterations
979	REAL(wp), PARAMETER :: &
980	grav = 9.8, & ! gravity
981	kappa = 0.4 ! von Karman's constant
982	!!----------------------------------------------------------------------
983	!! * Start
984
985	IF( wrk_in_use(2, 14,15,16,17,18,19, &
986	20,21,22,23,24,25,26,27,28,29, &
987	30,31,32,33,34) .OR. &
988	iwrk_in_use(2, 1) ) THEN
989	CALL ctl_stop('TURB_CORE_2Z: requested workspace arrays unavailable') ; RETURN
990	ENDIF
991
992	!! Initial air/sea differences
993	dU10 = max(0.5, dU) ! we don't want to fall under 0.5 m/s
994	dT = T_zt - sst
995	dq = q_zt - q_sat
996
997	!! Neutral Drag Coefficient :
998	stab = 0.5 + sign(0.5,dT) ! stab = 1 if dT > 0 -> STABLE
999	Cd_n10 = 1E-3*( 2.7/dU10 + 0.142 + dU10/13.09 )
1000	sqrt_Cd_n10 = sqrt(Cd_n10)
1001	Ce_n10 = 1E-3( 34.6 sqrt_Cd_n10 )
1002	Ch_n10 = 1E-3sqrt_Cd_n10(18stab + 32.7(1 - stab))
1003
1004	!! Initializing transf. coeff. with their first guess neutral equivalents :
1005	Cd = Cd_n10 ; Ce = Ce_n10 ; Ch = Ch_n10 ; sqrt_Cd = sqrt(Cd)
1006
1007	!! Initializing z_u values with z_t values :
1008	T_zu = T_zt ; q_zu = q_zt
1009
1010	!! * Now starting iteration loop
1011	DO j_itt=1, nb_itt
1012	dT = T_zu - sst ; dq = q_zu - q_sat ! Updating air/sea differences
1013	T_vpot = T_zu(1. + 0.608q_zu) ! Updating virtual potential temperature at zu
1014	U_star = sqrt_Cd*dU10 ! Updating turbulent scales : (L & Y eq. (7))
1015	T_star = Ch/sqrt_Cd*dT !
1016	q_star = Ce/sqrt_Cd*dq !
1017	!!
1018	L = (U_star*U_star) & ! Estimate the Monin-Obukov length at height zu
1019	& / (kappagrav/T_vpot(T_star(1.+0.608q_zu) + 0.608T_zuq_star))
1020	!! Stability parameters :
1021	zeta_u = zu/L ; zeta_u = sign( min(abs(zeta_u),10.0), zeta_u )
1022	zeta_t = zt/L ; zeta_t = sign( min(abs(zeta_t),10.0), zeta_t )
1023	zpsi_hu = psi_h(zeta_u)
1024	zpsi_ht = psi_h(zeta_t)
1025	zpsi_m = psi_m(zeta_u)
1026	!!
1027	!! Shifting the wind speed to 10m and neutral stability : (L & Y eq.(9a))
1028	! U_n10 = dU10/(1. + sqrt_Cd_n10/kappa*(log(zu/10.) - psi_m(zeta_u)))
1029	U_n10 = dU10/(1. + sqrt_Cd_n10/kappa*(log(zu/10.) - zpsi_m))
1030	!!
1031	!! Shifting temperature and humidity at zu : (L & Y eq. (9b-9c))
1032	! T_zu = T_zt - T_star/kappa*(log(zt/zu) + psi_h(zeta_u) - psi_h(zeta_t))
1033	T_zu = T_zt - T_star/kappa*(log(zt/zu) + zpsi_hu - zpsi_ht)
1034	! q_zu = q_zt - q_star/kappa*(log(zt/zu) + psi_h(zeta_u) - psi_h(zeta_t))
1035	q_zu = q_zt - q_star/kappa*(log(zt/zu) + zpsi_hu - zpsi_ht)
1036	!!
1037	!! q_zu cannot have a negative value : forcing 0
1038	stab = 0.5 + sign(0.5,q_zu) ; q_zu = stab*q_zu
1039	!!
1040	!! Updating the neutral 10m transfer coefficients :
1041	Cd_n10 = 1E-3 * (2.7/U_n10 + 0.142 + U_n10/13.09) ! L & Y eq. (6a)
1042	sqrt_Cd_n10 = sqrt(Cd_n10)
1043	Ce_n10 = 1E-3 * (34.6 * sqrt_Cd_n10) ! L & Y eq. (6b)
1044	stab = 0.5 + sign(0.5,zeta_u)
1045	Ch_n10 = 1E-3sqrt_Cd_n10(18.stab + 32.7(1-stab)) ! L & Y eq. (6c-6d)
1046	!!
1047	!!
1048	!! Shifting the neutral 10m transfer coefficients to (zu,zeta_u) :
1049	! xct = 1. + sqrt_Cd_n10/kappa*(log(zu/10.) - psi_m(zeta_u))
1050	xct = 1. + sqrt_Cd_n10/kappa*(log(zu/10.) - zpsi_m)
1051	Cd = Cd_n10/(xct*xct) ; sqrt_Cd = sqrt(Cd)
1052	!!
1053	! xlogt = log(zu/10.) - psi_h(zeta_u)
1054	xlogt = log(zu/10.) - zpsi_hu
1055	!!
1056	xct = 1. + Ch_n10*xlogt/kappa/sqrt_Cd_n10
1057	Ch = Ch_n10*sqrt_Cd/sqrt_Cd_n10/xct
1058	!!
1059	xct = 1. + Ce_n10*xlogt/kappa/sqrt_Cd_n10
1060	Ce = Ce_n10*sqrt_Cd/sqrt_Cd_n10/xct
1061	!!
1062	!!
1063	END DO
1064	!!
1065	IF( wrk_not_released(2, 14,15,16,17,18,19, &
1066	& 20,21,22,23,24,25,26,27,28,29, &
1067	& 30,31,32,33,34 ) .OR. &
1068	iwrk_not_released(2, 1) ) &
1069	CALL ctl_stop('TURB_CORE_2Z: failed to release workspace arrays')
1070	!
1071	END SUBROUTINE TURB_CORE_2Z
1072
1073
1074	FUNCTION psi_m(zta) !! Psis, L & Y eq. (8c), (8d), (8e)
1075	!-------------------------------------------------------------------------------
1076	USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released
1077	USE wrk_nemo, ONLY: X2 => wrk_2d_35
1078	USE wrk_nemo, ONLY: X => wrk_2d_36
1079	USE wrk_nemo, ONLY: stabit => wrk_2d_37
1080	!!
1081	REAL(wp), DIMENSION(jpi,jpj), INTENT(in) :: zta
1082
1083	REAL(wp), PARAMETER :: pi = 3.141592653589793_wp
1084	REAL(wp), DIMENSION(jpi,jpj) :: psi_m
1085	!-------------------------------------------------------------------------------
1086
1087	IF( wrk_in_use(2, 35,36,37) ) THEN
1088	CALL ctl_stop('psi_m: requested workspace arrays unavailable') ; RETURN
1089	ENDIF
1090
1091	X2 = sqrt(abs(1. - 16.*zta)) ; X2 = max(X2 , 1.0) ; X = sqrt(X2)
1092	stabit = 0.5 + sign(0.5,zta)
1093	psi_m = -5.ztastabit & ! Stable
1094	& + (1. - stabit)(2log((1. + X)/2) + log((1. + X2)/2) - 2*atan(X) + pi/2) ! Unstable
1095
1096	IF( wrk_not_released(2, 35,36,37) ) CALL ctl_stop('psi_m: failed to release workspace arrays')
1097	!
1098	END FUNCTION psi_m
1099
1100
1101	FUNCTION psi_h( zta ) !! Psis, L & Y eq. (8c), (8d), (8e)
1102	!-------------------------------------------------------------------------------
1103	USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released
1104	USE wrk_nemo, ONLY: X2 => wrk_2d_35
1105	USE wrk_nemo, ONLY: X => wrk_2d_36
1106	USE wrk_nemo, ONLY: stabit => wrk_2d_37
1107	!
1108	REAL(wp), DIMENSION(jpi,jpj), INTENT(in) :: zta
1109	!
1110	REAL(wp), DIMENSION(jpi,jpj) :: psi_h
1111	!-------------------------------------------------------------------------------
1112
1113	IF( wrk_in_use(2, 35,36,37) ) THEN
1114	CALL ctl_stop('psi_h: requested workspace arrays unavailable') ; RETURN
1115	ENDIF
1116
1117	X2 = sqrt(abs(1. - 16.*zta)) ; X2 = max(X2 , 1.) ; X = sqrt(X2)
1118	stabit = 0.5 + sign(0.5,zta)
1119	psi_h = -5.ztastabit & ! Stable
1120	& + (1. - stabit)(2.log( (1. + X2)/2. )) ! Unstable
1121
1122	IF( wrk_not_released(2, 35,36,37) ) CALL ctl_stop('psi_h: failed to release workspace arrays')
1123	!
1124	END FUNCTION psi_h
1125
1126	#if defined key_orca_r025
1127	INTEGER FUNCTION sbc_blk_core_alloc()
1128	!!----------------------------------------------------------------------
1129	!! * ROUTINE sbc_blk_core_alloc *
1130	!!----------------------------------------------------------------------
1131	ALLOCATE( area(jpi,jpj) , zqlw(jpi,jpj) , &
1132	& zqsb(jpi,jpj) , zqla(jpi,jpj) , &
1133	& zevap(jpi,jpj) , STAT=sbc_blk_core_alloc )
1134	zqlw=0._wp
1135	zqsb=0._wp
1136	!
1137	IF( lk_mpp ) CALL mpp_sum ( sbc_blk_core_alloc )
1138	IF( sbc_blk_core_alloc > 0 ) CALL ctl_warn('sbc_blk_core_alloc: allocation of arrays failed')
1139	END FUNCTION sbc_blk_core_alloc
1140	#endif
1141
1142	SUBROUTINE Shapiro_1D(rla_varin,id_np, cd_overlap, rlpa_varout) !GIG
1143	!!=====================================================================
1144	!!
1145	!! Description: This function applies a 1D Shapiro filter
1146	!! (3 points filter) horizontally to a 2D field
1147	!! in regular grid
1148	!! Arguments :
1149	!! rla_varin : Input variable to filter
1150	!! zla_mask : Input mask variable
1151	!! id_np : Number of Shapiro filter iterations
1152	!! cd_overlap : Logical argument for periodical condition
1153	!! (global ocean case)
1154	!! rlpa_varout : Output filtered variable
1155	!!
1156	!! History : 08/2009 S. CAILLEAU : from 1st version of N. FERRY
1157	!! 09/2009 C. REGNIER : Corrections
1158	!!
1159	!!=====================================================================
1160	IMPLICIT NONE
1161	INTEGER, INTENT(IN) :: id_np
1162	REAL(wp), DIMENSION(jpi,jpj), INTENT(IN) :: rla_varin !GIG
1163	CHARACTER(len=20), INTENT(IN) :: cd_overlap !GIG
1164	REAL(wp), DIMENSION(jpi,jpj), INTENT(OUT) :: rlpa_varout !GIG
1165
1166	REAL(wp), DIMENSION(jpi,jpj) :: rlpa_varout_tmp
1167	REAL, PARAMETER :: rl_alpha = 1./2. ! fixed stability coefficient (isotrope case)
1168	REAL, parameter :: rap_aniso_diff_XY=2.25 ! anisotrope case
1169	REAL :: alphax,alphay, znum, zden,test
1170	INTEGER :: ji, jj, jn, nn
1171	!
1172	!! rap_aniso_diff_XY=2.25 : valeur trouvée empiriquement pour 140 itération pour le filtre de Shapiro et
1173	!! pour un rapport d'anisotopie de 1.5 : on filtre de plus rapidement en x qu'eny.
1174	!------------------------------------------------------------------------------
1175	!
1176	! Loop on several filter iterations
1177
1178	! Global ocean case
1179	IF (( cd_overlap == 'MERCA_GLOB' ) .OR. &
1180	( cd_overlap == 'REGULAR_GLOB' ) .OR. &
1181	( cd_overlap == 'ORCA_GLOB' )) THEN
1182	rlpa_varout(:,:) = rla_varin(:,:)
1183	rlpa_varout_tmp(:,:) = rlpa_varout(:,:)
1184	!
1185
1186	alphax=1./2.
1187	alphay=1./2.
1188	! Dx/Dy=rap_aniso_diff_XY , D_ = vitesse de diffusion
1189	! 140 passes du fitre, Lx/Ly=1.5, le rap_aniso_diff_XY correspondant est:
1190	IF ( rap_aniso_diff_XY .GE. 1. ) alphay=alphay/rap_aniso_diff_XY
1191	IF ( rap_aniso_diff_XY .LT. 1. ) alphax=alphax*rap_aniso_diff_XY
1192
1193	DO jn = 1,id_np ! number of passes of the filter
1194	DO ji = 2,jpim1
1195	DO jj = 2,jpjm1
1196	! We crop on the coast
1197	znum = rlpa_varout_tmp(ji,jj) &
1198	+ 0.25alphax(rlpa_varout_tmp(ji-1,jj )-rlpa_varout_tmp(ji,jj))*tmask(ji-1,jj ,1) &
1199	+ 0.25alphax(rlpa_varout_tmp(ji+1,jj )-rlpa_varout_tmp(ji,jj))*tmask(ji+1,jj ,1) &
1200	+ 0.25alphay(rlpa_varout_tmp(ji ,jj-1)-rlpa_varout_tmp(ji,jj))*tmask(ji ,jj-1,1) &
1201	+ 0.25alphay(rlpa_varout_tmp(ji ,jj+1)-rlpa_varout_tmp(ji,jj))*tmask(ji ,jj+1,1)
1202	rlpa_varout(ji,jj)=znumtmask(ji,jj,1)+rla_varin(ji,jj)(1.-tmask(ji,jj,1))
1203	ENDDO ! end loop ji
1204	ENDDO ! end loop jj
1205	!
1206	!
1207	! Periodical condition in case of cd_overlap (global ocean)
1208	! - on a mercator projection grid we consider that singular point at poles
1209	! are a mean of the values at points of the previous latitude
1210	! - on ORCA and regular grid we copy the values at points of the previous latitude
1211	IF ( cd_overlap == 'MERCAT_GLOB' ) THEN
1212	!GIG case unchecked
1213	rlpa_varout(1,1) = SUM(rlpa_varout(:,2)) / jpi
1214	rlpa_varout(jpi,jpj) = SUM(rlpa_varout(:,jpj-1)) / jpi
1215	ELSE
1216	call lbc_lnk(rlpa_varout, 'T', 1.) ! Boundary condition
1217	ENDIF
1218	rlpa_varout_tmp(:,:) = rlpa_varout(:,:)
1219	ENDDO ! end loop jn
1220	ENDIF
1221
1222	!
1223	END SUBROUTINE Shapiro_1D
1224
1225
1226	!!======================================================================
1227	END MODULE sbcblk_core

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