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asminc.F90 @ 12607

Last change on this file since 12607 was 12607, checked in by dcarneir, 4 years ago
Changing asminc to include SIT
File size: 64.6 KB

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1	MODULE asminc
2	!!======================================================================
3	!! * MODULE asminc *
4	!! Assimilation increment : Apply an increment generated by data
5	!! assimilation
6	!!======================================================================
7	!! History : ! 2007-03 (M. Martin) Met Office version
8	!! ! 2007-04 (A. Weaver) calc_date original code
9	!! ! 2007-04 (A. Weaver) Merge with OPAVAR/NEMOVAR
10	!! NEMO 3.3 ! 2010-05 (D. Lea) Update to work with NEMO v3.2
11	!! - ! 2010-05 (D. Lea) add calc_month_len routine based on day_init
12	!! 3.4 ! 2012-10 (A. Weaver and K. Mogensen) Fix for direct initialization
13	!!----------------------------------------------------------------------
14
15	!!----------------------------------------------------------------------
16	!! 'key_asminc' : Switch on the assimilation increment interface
17	!!----------------------------------------------------------------------
18	!! asm_inc_init : Initialize the increment arrays and IAU weights
19	!! calc_date : Compute the calendar date YYYYMMDD on a given step
20	!! tra_asm_inc : Apply the tracer (T and S) increments
21	!! dyn_asm_inc : Apply the dynamic (u and v) increments
22	!! ssh_asm_inc : Apply the SSH increment
23	!! seaice_asm_inc : Apply the sea ice concentration increment
24	!! sit_asm_inc : Apply the sea ice thickness increment
25	!!----------------------------------------------------------------------
26	USE wrk_nemo ! Memory Allocation
27	USE par_oce ! Ocean space and time domain variables
28	USE dom_oce ! Ocean space and time domain
29	USE domvvl ! domain: variable volume level
30	USE oce ! Dynamics and active tracers defined in memory
31	USE ldfdyn_oce ! ocean dynamics: lateral physics
32	USE eosbn2 ! Equation of state - in situ and potential density
33	USE zpshde ! Partial step : Horizontal Derivative
34	USE iom ! Library to read input files
35	USE asmpar ! Parameters for the assmilation interface
36	USE c1d ! 1D initialization
37	USE in_out_manager ! I/O manager
38	USE lib_mpp ! MPP library
39	#if defined key_lim2
40	USE ice_2 ! LIM2
41	#endif
42	USE sbc_oce ! Surface boundary condition variables.
43	USE zdfmxl, ONLY : &
44	& hmld_tref, &
45	#if defined key_karaml
46	& hmld_kara, &
47	& ln_kara, &
48	#endif
49	& hmld, &
50	& hmlp, &
51	& hmlpt
52	#if defined key_bdy
53	USE bdy_oce, ONLY: bdytmask
54	#endif
55	USE asmbgc ! Biogeochemistry assimilation
56
57	IMPLICIT NONE
58	PRIVATE
59
60	PUBLIC asm_inc_init !: Initialize the increment arrays and IAU weights
61	PUBLIC calc_date !: Compute the calendar date YYYYMMDD on a given step
62	PUBLIC tra_asm_inc !: Apply the tracer (T and S) increments
63	PUBLIC dyn_asm_inc !: Apply the dynamic (u and v) increments
64	PUBLIC ssh_asm_inc !: Apply the SSH increment
65	PUBLIC seaice_asm_inc !: Apply the seaice concentration increment
66	PUBLIC sit_asm_inc !: Apply the seaice thickness increment
67	PUBLIC bgc_asm_inc !: Apply the biogeochemistry increments
68
69	#if defined key_asminc
70	LOGICAL, PUBLIC, PARAMETER :: lk_asminc = .TRUE. !: Logical switch for assimilation increment interface
71	#else
72	LOGICAL, PUBLIC, PARAMETER :: lk_asminc = .FALSE. !: No assimilation increments
73	#endif
74	LOGICAL, PUBLIC :: ln_bkgwri = .FALSE. !: No output of the background state fields
75	LOGICAL, PUBLIC :: ln_avgbkg = .FALSE. !: No output of the mean background state fields
76	LOGICAL, PUBLIC :: ln_asmiau = .FALSE. !: No applying forcing with an assimilation increment
77	LOGICAL, PUBLIC :: ln_asmdin = .FALSE. !: No direct initialization
78	LOGICAL, PUBLIC :: ln_trainc = .FALSE. !: No tracer (T and S) assimilation increments
79	LOGICAL, PUBLIC :: ln_dyninc = .FALSE. !: No dynamics (u and v) assimilation increments
80	LOGICAL, PUBLIC :: ln_sshinc = .FALSE. !: No sea surface height assimilation increment
81	LOGICAL, PUBLIC :: ln_seaiceinc = .FALSE. !: No sea ice concentration increment
82	LOGICAL, PUBLIC :: ln_sitinc = .FALSE. !: No sea ice thickness increment
83	LOGICAL, PUBLIC :: lk_bgcinc = .FALSE. !: No biogeochemistry increments
84	LOGICAL, PUBLIC :: ln_salfix = .FALSE. !: Apply minimum salinity check
85	LOGICAL, PUBLIC :: ln_temnofreeze = .FALSE. !: Don't allow the temperature to drop below freezing
86	INTEGER, PUBLIC :: nn_divdmp !: Apply divergence damping filter nn_divdmp times
87
88	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: t_bkg , s_bkg !: Background temperature and salinity
89	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: u_bkg , v_bkg !: Background u- & v- velocity components
90	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: t_bkginc, s_bkginc !: Increment to the background T & S
91	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: u_bkginc, v_bkginc !: Increment to the u- & v-components
92	REAL(wp), PUBLIC, DIMENSION(:) , ALLOCATABLE :: wgtiau !: IAU weights for each time step
93	#if defined key_asminc
94	REAL(wp), PUBLIC, DIMENSION(:,:), ALLOCATABLE :: ssh_iau !: IAU-weighted sea surface height increment
95	#endif
96	! !!! time steps relative to the cycle interval [0,nitend-nit000-1]
97	INTEGER , PUBLIC :: nitbkg !: Time step of the background state used in the Jb term
98	INTEGER , PUBLIC :: nitdin !: Time step of the background state for direct initialization
99	INTEGER , PUBLIC :: nitiaustr !: Time step of the start of the IAU interval
100	INTEGER , PUBLIC :: nitiaufin !: Time step of the end of the IAU interval
101	INTEGER , PUBLIC :: nitavgbkg !: Number of timesteps to average assim bkg [0,nitavgbkg]
102	!
103	INTEGER , PUBLIC :: niaufn !: Type of IAU weighing function: = 0 Constant weighting
104	! !: = 1 Linear hat-like, centred in middle of IAU interval
105	REAL(wp), PUBLIC :: salfixmin !: Ensure that the salinity is larger than this value if (ln_salfix)
106
107	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ssh_bkg, ssh_bkginc ! Background sea surface height and its increment
108	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: seaice_bkginc ! Increment to the background sea ice conc
109
110	INTEGER :: mld_choice = 4 !: choice of mld criteria to use for physics assimilation
111	!: 1) hmld - Turbocline/mixing depth [W points]
112	!: 2) hmlp - Density criterion (0.01 kg/m^3 change from 10m) [W points]
113	!: 3) hmld_kara - Kara MLD [Interpolated]
114	!: 4) hmld_tref - Temperature criterion (0.2 K change from surface) [T points]
115
116
117	!! * Substitutions
118	# include "domzgr_substitute.h90"
119	# include "ldfdyn_substitute.h90"
120	# include "vectopt_loop_substitute.h90"
121	!!----------------------------------------------------------------------
122	!! NEMO/OPA 3.3 , NEMO Consortium (2010)
123	!! $Id$
124	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
125	!!----------------------------------------------------------------------
126	CONTAINS
127
128	SUBROUTINE asm_inc_init
129	!!----------------------------------------------------------------------
130	!! * ROUTINE asm_inc_init *
131	!!
132	!! ** Purpose : Initialize the assimilation increment and IAU weights.
133	!!
134	!! ** Method : Initialize the assimilation increment and IAU weights.
135	!!
136	!! ** Action :
137	!!----------------------------------------------------------------------
138	INTEGER :: ji, jj, jk, jt ! dummy loop indices
139	INTEGER :: imid, inum ! local integers
140	INTEGER :: ios ! Local integer output status for namelist read
141	INTEGER :: iiauper ! Number of time steps in the IAU period
142	INTEGER :: icycper ! Number of time steps in the cycle
143	INTEGER :: iitend_date ! Date YYYYMMDD of final time step
144	INTEGER :: iitbkg_date ! Date YYYYMMDD of background time step for Jb term
145	INTEGER :: iitdin_date ! Date YYYYMMDD of background time step for DI
146	INTEGER :: iitiaustr_date ! Date YYYYMMDD of IAU interval start time step
147	INTEGER :: iitiaufin_date ! Date YYYYMMDD of IAU interval final time step
148	INTEGER :: isurfstat ! Local integer for status of reading surft variable
149	INTEGER :: iitavgbkg_date ! Date YYYYMMDD of end of assim bkg averaging period
150	!
151	REAL(wp) :: znorm ! Normalization factor for IAU weights
152	REAL(wp) :: ztotwgt ! Value of time-integrated IAU weights (should be equal to one)
153	REAL(wp) :: z_inc_dateb ! Start date of interval on which increment is valid
154	REAL(wp) :: z_inc_datef ! End date of interval on which increment is valid
155	REAL(wp) :: zdate_bkg ! Date in background state file for DI
156	REAL(wp) :: zdate_inc ! Time axis in increments file
157	!
158	REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: &
159	& t_bkginc_2d ! file for reading in 2D
160	! ! temperature increments
161	REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: &
162	& z_mld ! Mixed layer depth
163
164	REAL(wp), POINTER, DIMENSION(:,:) :: hdiv ! 2D workspace
165	!
166	LOGICAL :: lk_surft ! Logical: T => Increments file contains surft variable
167	! so only apply surft increments.
168	!!
169	NAMELIST/nam_asminc/ ln_bkgwri, ln_avgbkg, ln_balwri, &
170	& ln_trainc, ln_dyninc, ln_sshinc, &
171	& ln_phytobal, ln_slchltotinc, ln_slchldiainc, &
172	& ln_slchlnaninc, ln_slchlpicinc, ln_slchldininc, &
173	& ln_slchlnoninc, ln_schltotinc, ln_slphytotinc, &
174	& ln_slphydiainc, ln_slphynoninc, ln_spco2inc, &
175	& ln_sfco2inc, ln_plchltotinc, ln_pchltotinc, &
176	& ln_pno3inc, ln_psi4inc, ln_pdicinc, ln_palkinc, &
177	& ln_pphinc, ln_po2inc, ln_ppo4inc, &
178	& ln_asmdin, ln_asmiau, &
179	& nitbkg, nitdin, nitiaustr, nitiaufin, niaufn, &
180	& ln_salfix, salfixmin, nn_divdmp, nitavgbkg, &
181	& mld_choice, mld_choice_bgc, rn_maxchlinc
182	!!----------------------------------------------------------------------
183
184	!-----------------------------------------------------------------------
185	! Read Namelist nam_asminc : assimilation increment interface
186	!-----------------------------------------------------------------------
187
188	! Set default values
189	ln_bkgwri = .FALSE.
190	ln_avgbkg = .FALSE.
191	ln_trainc = .FALSE.
192	ln_dyninc = .FALSE.
193	ln_sshinc = .FALSE.
194	ln_asmdin = .FALSE.
195	ln_asmiau = .TRUE.
196	ln_salfix = .FALSE.
197
198	ln_seaiceinc = .FALSE.
199	ln_sitinc = .FALSE.
200	ln_temnofreeze = .FALSE.
201
202	salfixmin = -9999
203	nitbkg = 0
204	nitdin = 0
205	nitiaustr = 1
206	nitiaufin = 150
207	niaufn = 0
208	nitavgbkg = 1
209
210	REWIND( numnam_ref ) ! Namelist nam_asminc in reference namelist : Assimilation increment
211	READ ( numnam_ref, nam_asminc, IOSTAT = ios, ERR = 901)
212	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nam_asminc in reference namelist', lwp )
213
214	REWIND( numnam_cfg ) ! Namelist nam_asminc in configuration namelist : Assimilation increment
215	READ ( numnam_cfg, nam_asminc, IOSTAT = ios, ERR = 902 )
216	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nam_asminc in configuration namelist', lwp )
217	IF(lwm) WRITE ( numond, nam_asminc )
218
219	! Control print
220	IF(lwp) THEN
221	WRITE(numout,*)
222	WRITE(numout,*) 'asm_inc_init : Assimilation increment initialization :'
223	WRITE(numout,*) '~~~~~~~~~~~~'
224	WRITE(numout,*) ' Namelist nam_asminc : set assimilation increment parameters'
225	WRITE(numout,*) ' Logical switch for writing out background state ln_bkgwri = ', ln_bkgwri
226	WRITE(numout,*) ' Logical switch for writing mean background state ln_avgbkg = ', ln_avgbkg
227	WRITE(numout,*) ' Logical switch for writing out balancing increments ln_balwri = ', ln_balwri
228	WRITE(numout,*) ' Logical switch for applying tracer increments ln_trainc = ', ln_trainc
229	WRITE(numout,*) ' Logical switch for applying velocity increments ln_dyninc = ', ln_dyninc
230	WRITE(numout,*) ' Logical switch for applying SSH increments ln_sshinc = ', ln_sshinc
231	WRITE(numout,*) ' Logical switch for applying SIC increments ln_seaiceinc = ', ln_seaiceinc
232	WRITE(numout,*) ' Logical switch for applying SIT increments ln_sitinc = ', ln_sitinc
233	WRITE(numout,*) ' Logical switch for Direct Initialization (DI) ln_asmdin = ', ln_asmdin
234	WRITE(numout,*) ' Logical switch for Incremental Analysis Updating (IAU) ln_asmiau = ', ln_asmiau
235	WRITE(numout,*) ' Timestep of background in [0,nitend-nit000-1] nitbkg = ', nitbkg
236	WRITE(numout,*) ' Timestep of background for DI in [0,nitend-nit000-1] nitdin = ', nitdin
237	WRITE(numout,*) ' Timestep of start of IAU interval in [0,nitend-nit000-1] nitiaustr = ', nitiaustr
238	WRITE(numout,*) ' Timestep of end of IAU interval in [0,nitend-nit000-1] nitiaufin = ', nitiaufin
239	WRITE(numout,*) ' Number of timesteps to average assim bkg [0,nitavgbkg] nitavgbkg = ', nitavgbkg
240	WRITE(numout,*) ' Type of IAU weighting function niaufn = ', niaufn
241	WRITE(numout,*) ' Logical switch for ensuring that the sa > salfixmin ln_salfix = ', ln_salfix
242	WRITE(numout,*) ' Minimum salinity after applying the increments salfixmin = ', salfixmin
243	WRITE(numout,*) ' Choice of MLD for physics assimilation mld_choice = ', mld_choice
244	WRITE(numout,*) ' Choice of MLD for BGC assimilation mld_choice_bgc = ', mld_choice_bgc
245	WRITE(numout,*) ' Maximum absolute chlorophyll increment (<=0 = off) rn_maxchlinc = ', rn_maxchlinc
246	WRITE(numout,*) ' Logical switch for phytoplankton balancing ln_phytobal = ', ln_phytobal
247	WRITE(numout,*) ' Logical switch for applying slchltot increments ln_slchltotinc = ', ln_slchltotinc
248	WRITE(numout,*) ' Logical switch for applying slchldia increments ln_slchldiainc = ', ln_slchldiainc
249	WRITE(numout,*) ' Logical switch for applying slchlnon increments ln_slchlnoninc = ', ln_slchlnoninc
250	WRITE(numout,*) ' Logical switch for applying slchlnan increments ln_slchlnaninc = ', ln_slchlnaninc
251	WRITE(numout,*) ' Logical switch for applying slchlpic increments ln_slchlpicinc = ', ln_slchlpicinc
252	WRITE(numout,*) ' Logical switch for applying slchldin increments ln_slchldininc = ', ln_slchldininc
253	WRITE(numout,*) ' Logical switch for applying schltot increments ln_schltotinc = ', ln_schltotinc
254	WRITE(numout,*) ' Logical switch for applying slphytot increments ln_slphytotinc = ', ln_slphytotinc
255	WRITE(numout,*) ' Logical switch for applying slphydia increments ln_slphydiainc = ', ln_slphydiainc
256	WRITE(numout,*) ' Logical switch for applying slphynon increments ln_slphynoninc = ', ln_slphynoninc
257	WRITE(numout,*) ' Logical switch for applying spco2 increments ln_spco2inc = ', ln_spco2inc
258	WRITE(numout,*) ' Logical switch for applying sfco2 increments ln_sfco2inc = ', ln_sfco2inc
259	WRITE(numout,*) ' Logical switch for applying plchltot increments ln_plchltotinc = ', ln_plchltotinc
260	WRITE(numout,*) ' Logical switch for applying pchltot increments ln_pchltotinc = ', ln_pchltotinc
261	WRITE(numout,*) ' Logical switch for applying pno3 increments ln_pno3inc = ', ln_pno3inc
262	WRITE(numout,*) ' Logical switch for applying psi4 increments ln_psi4inc = ', ln_psi4inc
263	WRITE(numout,*) ' Logical switch for applying ppo4 increments ln_ppo4inc = ', ln_ppo4inc
264	WRITE(numout,*) ' Logical switch for applying pdic increments ln_pdicinc = ', ln_pdicinc
265	WRITE(numout,*) ' Logical switch for applying palk increments ln_palkinc = ', ln_palkinc
266	WRITE(numout,*) ' Logical switch for applying pph increments ln_pphinc = ', ln_pphinc
267	WRITE(numout,*) ' Logical switch for applying po2 increments ln_po2inc = ', ln_po2inc
268	ENDIF
269
270	nitbkg_r = nitbkg + nit000 - 1 ! Background time referenced to nit000
271	nitdin_r = nitdin + nit000 - 1 ! Background time for DI referenced to nit000
272	nitiaustr_r = nitiaustr + nit000 - 1 ! Start of IAU interval referenced to nit000
273	nitiaufin_r = nitiaufin + nit000 - 1 ! End of IAU interval referenced to nit000
274	nitavgbkg_r = nitavgbkg + nit000 - 1 ! Averaging period referenced to nit000
275
276	iiauper = nitiaufin_r - nitiaustr_r + 1 ! IAU interval length
277	icycper = nitend - nit000 + 1 ! Cycle interval length
278
279	CALL calc_date( nit000, nitend , ndate0, iitend_date ) ! Date of final time step
280	CALL calc_date( nit000, nitbkg_r , ndate0, iitbkg_date ) ! Background time for Jb referenced to ndate0
281	CALL calc_date( nit000, nitdin_r , ndate0, iitdin_date ) ! Background time for DI referenced to ndate0
282	CALL calc_date( nit000, nitiaustr_r, ndate0, iitiaustr_date ) ! IAU start time referenced to ndate0
283	CALL calc_date( nit000, nitiaufin_r, ndate0, iitiaufin_date ) ! IAU end time referenced to ndate0
284	CALL calc_date( nit000, nitavgbkg_r, ndate0, iitavgbkg_date ) ! End of assim bkg averaging period referenced to ndate0
285	!
286	IF(lwp) THEN
287	WRITE(numout,*)
288	WRITE(numout,*) ' Time steps referenced to current cycle:'
289	WRITE(numout,*) ' iitrst = ', nit000 - 1
290	WRITE(numout,*) ' nit000 = ', nit000
291	WRITE(numout,*) ' nitend = ', nitend
292	WRITE(numout,*) ' nitbkg_r = ', nitbkg_r
293	WRITE(numout,*) ' nitdin_r = ', nitdin_r
294	WRITE(numout,*) ' nitiaustr_r = ', nitiaustr_r
295	WRITE(numout,*) ' nitiaufin_r = ', nitiaufin_r
296	WRITE(numout,*) ' nitavgbkg_r = ', nitavgbkg_r
297	WRITE(numout,*)
298	WRITE(numout,*) ' Dates referenced to current cycle:'
299	WRITE(numout,*) ' ndastp = ', ndastp
300	WRITE(numout,*) ' ndate0 = ', ndate0
301	WRITE(numout,*) ' iitend_date = ', iitend_date
302	WRITE(numout,*) ' iitbkg_date = ', iitbkg_date
303	WRITE(numout,*) ' iitdin_date = ', iitdin_date
304	WRITE(numout,*) ' iitiaustr_date = ', iitiaustr_date
305	WRITE(numout,*) ' iitiaufin_date = ', iitiaufin_date
306	WRITE(numout,*) ' iitavgbkg_date = ', iitavgbkg_date
307	ENDIF
308	IF ( ln_slchltotinc .OR. ln_slchldiainc .OR. ln_slchlnoninc .OR. &
309	& ln_slchlnaninc .OR. ln_slchlpicinc .OR. ln_slchldininc .OR. &
310	& ln_schltotinc .OR. ln_slphytotinc .OR. ln_slphydiainc .OR. &
311	& ln_slphynoninc .OR. ln_spco2inc .OR. ln_sfco2inc .OR. &
312	& ln_plchltotinc .OR. ln_pchltotinc .OR. ln_pno3inc .OR. &
313	& ln_psi4inc .OR. ln_pdicinc .OR. ln_palkinc .OR. &
314	& ln_pphinc .OR. ln_po2inc .OR. ln_ppo4inc ) THEN
315	lk_bgcinc = .TRUE.
316	ENDIF
317
318	IF ( nacc /= 0 ) &
319	& CALL ctl_stop( ' nacc /= 0 and key_asminc :', &
320	& ' Assimilation increments have only been implemented', &
321	& ' for synchronous time stepping' )
322
323	IF ( ( ln_asmdin ).AND.( ln_asmiau ) ) &
324	& CALL ctl_stop( ' ln_asmdin and ln_asmiau :', &
325	& ' Choose Direct Initialization OR Incremental Analysis Updating')
326
327	IF ( ( ( .NOT. ln_asmdin ).AND.( .NOT. ln_asmiau ) ) &
328	& .AND.( ( ln_trainc ).OR.( ln_dyninc ).OR.( ln_sshinc ).OR.( ln_seaiceinc ).OR. &
329	& ( ln_sitinc ).OR.( lk_bgcinc ) )) &
330	& CALL ctl_stop( ' One or more of ln_trainc, ln_dyninc, ln_sshinc, ln_seaiceinc,', &
331	& ' ln_sitinc and ln_(bgc-variable)inc is set to .true.', &
332	& ' but ln_asmdin and ln_asmiau are both set to .false. :', &
333	& ' Inconsistent options')
334
335	IF ( ( niaufn /= 0 ).AND.( niaufn /= 1 ) ) &
336	& CALL ctl_stop( ' niaufn /= 0 or niaufn /=1 :', &
337	& ' Type IAU weighting function is invalid')
338
339	IF ( ( .NOT. ln_trainc ).AND.( .NOT. ln_dyninc ).AND.( .NOT. ln_sshinc ).AND.( .NOT. ln_seaiceinc ) &
340	& .AND.( .NOT. ln_sitinc ).AND.( .NOT. lk_bgcinc ) ) &
341	& CALL ctl_warn( ' ln_trainc, ln_dyninc, ln_sshinc, ln_seaiceinc,', &
342	& ' ln_sitinc and ln_(bgc-variable)inc are set to .false. :', &
343	& ' The assimilation increments are not applied')
344
345	IF ( ( ln_asmiau ).AND.( nitiaustr == nitiaufin ) ) &
346	& CALL ctl_stop( ' nitiaustr = nitiaufin :', &
347	& ' IAU interval is of zero length')
348
349	IF ( ( ln_asmiau ).AND.( ( nitiaustr_r < nit000 ).OR.( nitiaufin_r > nitend ) ) ) &
350	& CALL ctl_stop( ' nitiaustr or nitiaufin :', &
351	& ' IAU starting or final time step is outside the cycle interval', &
352	& ' Valid range nit000 to nitend')
353
354	IF ( ( nitbkg_r < nit000 - 1 ).OR.( nitbkg_r > nitend ) ) &
355	& CALL ctl_stop( ' nitbkg :', &
356	& ' Background time step is outside the cycle interval')
357
358	IF ( ( nitdin_r < nit000 - 1 ).OR.( nitdin_r > nitend ) ) &
359	& CALL ctl_stop( ' nitdin :', &
360	& ' Background time step for Direct Initialization is outside', &
361	& ' the cycle interval')
362
363	IF ( nitavgbkg_r > nitend ) &
364	& CALL ctl_stop( ' nitavgbkg_r :', &
365	& ' Assim bkg averaging period is outside', &
366	& ' the cycle interval')
367
368	IF ( lk_bgcinc ) CALL asm_bgc_check_options
369
370	IF ( nstop > 0 ) RETURN ! if there are any errors then go no further
371
372	!--------------------------------------------------------------------
373	! Initialize the Incremental Analysis Updating weighting function
374	!--------------------------------------------------------------------
375
376	IF ( ln_asmiau ) THEN
377
378	ALLOCATE( wgtiau( icycper ) )
379
380	wgtiau(:) = 0.0
381
382	IF ( niaufn == 0 ) THEN
383
384	!---------------------------------------------------------
385	! Constant IAU forcing
386	!---------------------------------------------------------
387
388	DO jt = 1, iiauper
389	wgtiau(jt+nitiaustr-1) = 1.0 / REAL( iiauper )
390	END DO
391
392	ELSEIF ( niaufn == 1 ) THEN
393
394	!---------------------------------------------------------
395	! Linear hat-like, centred in middle of IAU interval
396	!---------------------------------------------------------
397
398	! Compute the normalization factor
399	znorm = 0.0
400	IF ( MOD( iiauper, 2 ) == 0 ) THEN ! Even number of time steps in IAU interval
401	imid = iiauper / 2
402	DO jt = 1, imid
403	znorm = znorm + REAL( jt )
404	END DO
405	znorm = 2.0 * znorm
406	ELSE ! Odd number of time steps in IAU interval
407	imid = ( iiauper + 1 ) / 2
408	DO jt = 1, imid - 1
409	znorm = znorm + REAL( jt )
410	END DO
411	znorm = 2.0 * znorm + REAL( imid )
412	ENDIF
413	znorm = 1.0 / znorm
414
415	DO jt = 1, imid - 1
416	wgtiau(jt+nitiaustr-1) = REAL( jt ) * znorm
417	END DO
418	DO jt = imid, iiauper
419	wgtiau(jt+nitiaustr-1) = REAL( iiauper - jt + 1 ) * znorm
420	END DO
421
422	ENDIF
423
424	! Test that the integral of the weights over the weighting interval equals 1
425	IF(lwp) THEN
426	WRITE(numout,*)
427	WRITE(numout,*) 'asm_inc_init : IAU weights'
428	WRITE(numout,*) '~~~~~~~~~~~~'
429	WRITE(numout,*) ' time step IAU weight'
430	WRITE(numout,*) ' ========= ====================='
431	ztotwgt = 0.0
432	DO jt = 1, icycper
433	ztotwgt = ztotwgt + wgtiau(jt)
434	WRITE(numout,*) ' ', jt, ' ', wgtiau(jt)
435	END DO
436	WRITE(numout,*) ' ==================================='
437	WRITE(numout,*) ' Time-integrated weight = ', ztotwgt
438	WRITE(numout,*) ' ==================================='
439	ENDIF
440
441	ENDIF
442
443	!--------------------------------------------------------------------
444	! Allocate and initialize the increment arrays
445	!--------------------------------------------------------------------
446
447	IF ( ln_trainc ) THEN
448	ALLOCATE( t_bkginc(jpi,jpj,jpk) )
449	ALLOCATE( s_bkginc(jpi,jpj,jpk) )
450	t_bkginc(:,:,:) = 0.0
451	s_bkginc(:,:,:) = 0.0
452	ENDIF
453	IF ( ln_dyninc ) THEN
454	ALLOCATE( u_bkginc(jpi,jpj,jpk) )
455	ALLOCATE( v_bkginc(jpi,jpj,jpk) )
456	u_bkginc(:,:,:) = 0.0
457	v_bkginc(:,:,:) = 0.0
458	ENDIF
459	IF ( ln_sshinc ) THEN
460	ALLOCATE( ssh_bkginc(jpi,jpj) )
461	ssh_bkginc(:,:) = 0.0
462	ENDIF
463	IF ( ln_seaiceinc ) THEN
464	ALLOCATE( seaice_bkginc(jpi,jpj))
465	seaice_bkginc(:,:) = 0.0
466	ENDIF
467	IF ( ln_sitinc ) THEN
468	ALLOCATE( sit_bkginc(jpi,jpj))
469	sit_bkginc(:,:) = 0.0
470	ENDIF
471	#if defined key_asminc
472	ALLOCATE( ssh_iau(jpi,jpj) )
473	ssh_iau(:,:) = 0.0
474	#endif
475	IF ( ( ln_trainc ).OR.( ln_dyninc ).OR.( ln_sshinc ).OR.( ln_seaiceinc ) &
476	& .OR.( ln_sitinc ).OR.( lk_bgcinc ) ) THEN
477
478	!--------------------------------------------------------------------
479	! Read the increments from file
480	!--------------------------------------------------------------------
481
482	CALL iom_open( c_asminc, inum )
483
484	CALL iom_get( inum, 'time', zdate_inc )
485
486	CALL iom_get( inum, 'z_inc_dateb', z_inc_dateb )
487	CALL iom_get( inum, 'z_inc_datef', z_inc_datef )
488	z_inc_dateb = zdate_inc
489	z_inc_datef = zdate_inc
490
491	IF(lwp) THEN
492	WRITE(numout,*)
493	WRITE(numout,*) 'asm_inc_init : Assimilation increments valid ', &
494	& ' between dates ', NINT( z_inc_dateb ),' and ', &
495	& NINT( z_inc_datef )
496	WRITE(numout,*) '~~~~~~~~~~~~'
497	ENDIF
498
499	IF ( ( NINT( z_inc_dateb ) < ndastp ) &
500	& .OR.( NINT( z_inc_datef ) > iitend_date ) ) &
501	& CALL ctl_warn( ' Validity time of assimilation increments is ', &
502	& ' outside the assimilation interval' )
503
504	IF ( ( ln_asmdin ).AND.( NINT( zdate_inc ) /= iitdin_date ) ) &
505	& CALL ctl_warn( ' Validity time of assimilation increments does ', &
506	& ' not agree with Direct Initialization time' )
507
508	IF ( ln_trainc ) THEN
509
510	!Test if the increments file contains the surft variable.
511	isurfstat = iom_varid( inum, 'bckinsurft', ldstop = .FALSE. )
512	IF ( isurfstat == -1 ) THEN
513	lk_surft = .FALSE.
514	ELSE
515	lk_surft = .TRUE.
516	CALL ctl_warn( ' Applying 2D temperature increment to bottom of ML: ', &
517	& ' bckinsurft found in increments file.' )
518	ENDIF
519
520	IF (lk_surft) THEN
521
522	ALLOCATE(z_mld(jpi,jpj))
523	SELECT CASE(mld_choice)
524	CASE(1)
525	z_mld = hmld
526	CASE(2)
527	z_mld = hmlp
528	CASE(3)
529	#if defined key_karaml
530	IF ( ln_kara ) THEN
531	z_mld = hmld_kara
532	ELSE
533	CALL ctl_stop("Kara mixed layer not calculated as ln_kara=.false.")
534	ENDIF
535	#else
536	CALL ctl_stop("Kara mixed layer not defined in current version of NEMO") ! JW: Safety feature, should be removed
537	! once the Kara mixed layer is available
538	#endif
539	CASE(4)
540	z_mld = hmld_tref
541	END SELECT
542
543	ALLOCATE( t_bkginc_2d(jpi,jpj) )
544	CALL iom_get( inum, jpdom_autoglo, 'bckinsurft', t_bkginc_2d, 1)
545	#if defined key_bdy
546	DO jk = 1,jpkm1
547	WHERE( z_mld(:,:) > fsdepw(:,:,jk) )
548	t_bkginc(:,:,jk) = t_bkginc_2d(:,:) * 0.5 * &
549	& ( 1 + cos( (fsdept(:,:,jk)/z_mld(:,:) ) * rpi ) )
550
551	t_bkginc(:,:,jk) = t_bkginc(:,:,jk) * bdytmask(:,:)
552	ELSEWHERE
553	t_bkginc(:,:,jk) = 0.
554	ENDWHERE
555	ENDDO
556	#else
557	t_bkginc(:,:,:) = 0.
558	#endif
559	s_bkginc(:,:,:) = 0.
560
561	DEALLOCATE(z_mld, t_bkginc_2d)
562
563	ELSE
564
565	CALL iom_get( inum, jpdom_autoglo, 'bckint', t_bkginc, 1 )
566	CALL iom_get( inum, jpdom_autoglo, 'bckins', s_bkginc, 1 )
567	! Apply the masks
568	t_bkginc(:,:,:) = t_bkginc(:,:,:) * tmask(:,:,:)
569	s_bkginc(:,:,:) = s_bkginc(:,:,:) * tmask(:,:,:)
570	! Set missing increments to 0.0 rather than 1e+20
571	! to allow for differences in masks
572	WHERE( ABS( t_bkginc(:,:,:) ) > 1.0e+10 ) t_bkginc(:,:,:) = 0.0
573	WHERE( ABS( s_bkginc(:,:,:) ) > 1.0e+10 ) s_bkginc(:,:,:) = 0.0
574
575	ENDIF
576
577	ENDIF
578
579	IF ( ln_dyninc ) THEN
580	CALL iom_get( inum, jpdom_autoglo, 'bckinu', u_bkginc, 1 )
581	CALL iom_get( inum, jpdom_autoglo, 'bckinv', v_bkginc, 1 )
582	! Apply the masks
583	u_bkginc(:,:,:) = u_bkginc(:,:,:) * umask(:,:,:)
584	v_bkginc(:,:,:) = v_bkginc(:,:,:) * vmask(:,:,:)
585	! Set missing increments to 0.0 rather than 1e+20
586	! to allow for differences in masks
587	WHERE( ABS( u_bkginc(:,:,:) ) > 1.0e+10 ) u_bkginc(:,:,:) = 0.0
588	WHERE( ABS( v_bkginc(:,:,:) ) > 1.0e+10 ) v_bkginc(:,:,:) = 0.0
589	ENDIF
590
591	IF ( ln_sshinc ) THEN
592	CALL iom_get( inum, jpdom_autoglo, 'bckineta', ssh_bkginc, 1 )
593	! Apply the masks
594	ssh_bkginc(:,:) = ssh_bkginc(:,:) * tmask(:,:,1)
595	! Set missing increments to 0.0 rather than 1e+20
596	! to allow for differences in masks
597	WHERE( ABS( ssh_bkginc(:,:) ) > 1.0e+10 ) ssh_bkginc(:,:) = 0.0
598	ENDIF
599
600	IF ( ln_seaiceinc ) THEN
601	CALL iom_get( inum, jpdom_autoglo, 'bckinseaice', seaice_bkginc, 1 )
602	! Apply the masks
603	seaice_bkginc(:,:) = seaice_bkginc(:,:) * tmask(:,:,1)
604	! Set missing increments to 0.0 rather than 1e+20
605	! to allow for differences in masks
606	WHERE( ABS( seaice_bkginc(:,:) ) > 1.0e+10 ) seaice_bkginc(:,:) = 0.0
607	ENDIF
608
609	IF ( lk_bgcinc ) THEN
610	CALL asm_bgc_init_incs( inum )
611	ENDIF
612
613	CALL iom_close( inum )
614
615	ENDIF
616
617	!-----------------------------------------------------------------------
618	! Apply divergence damping filter
619	!-----------------------------------------------------------------------
620
621	IF ( ln_dyninc .AND. nn_divdmp > 0 ) THEN
622
623	CALL wrk_alloc(jpi,jpj,hdiv)
624
625	DO jt = 1, nn_divdmp
626
627	DO jk = 1, jpkm1
628
629	hdiv(:,:) = 0._wp
630
631	DO jj = 2, jpjm1
632	DO ji = fs_2, fs_jpim1 ! vector opt.
633	hdiv(ji,jj) = &
634	( e2u(ji ,jj ) * fse3u(ji ,jj ,jk) * u_bkginc(ji ,jj ,jk) &
635	- e2u(ji-1,jj ) * fse3u(ji-1,jj ,jk) * u_bkginc(ji-1,jj ,jk) &
636	+ e1v(ji ,jj ) * fse3v(ji ,jj ,jk) * v_bkginc(ji ,jj ,jk) &
637	- e1v(ji ,jj-1) * fse3v(ji ,jj-1,jk) * v_bkginc(ji ,jj-1,jk) ) &
638	/ ( e1t(ji,jj) * e2t(ji,jj) * fse3t(ji,jj,jk) )
639	END DO
640	END DO
641
642	CALL lbc_lnk( hdiv, 'T', 1. ) ! lateral boundary cond. (no sign change)
643
644	DO jj = 2, jpjm1
645	DO ji = fs_2, fs_jpim1 ! vector opt.
646	u_bkginc(ji,jj,jk) = u_bkginc(ji,jj,jk) + 0.2_wp * ( e1t(ji+1,jj)e2t(ji+1,jj) hdiv(ji+1,jj) &
647	- e1t(ji ,jj)e2t(ji ,jj) hdiv(ji ,jj) ) &
648	/ e1u(ji,jj) * umask(ji,jj,jk)
649	v_bkginc(ji,jj,jk) = v_bkginc(ji,jj,jk) + 0.2_wp * ( e1t(ji,jj+1)e2t(ji,jj+1) hdiv(ji,jj+1) &
650	- e1t(ji,jj )e2t(ji,jj ) hdiv(ji,jj ) ) &
651	/ e2v(ji,jj) * vmask(ji,jj,jk)
652	END DO
653	END DO
654
655	END DO
656
657	END DO
658
659	CALL wrk_dealloc(jpi,jpj,hdiv)
660
661	ENDIF
662
663
664
665	!-----------------------------------------------------------------------
666	! Allocate and initialize the background state arrays
667	!-----------------------------------------------------------------------
668
669	IF ( ln_asmdin ) THEN
670
671	ALLOCATE( t_bkg(jpi,jpj,jpk) )
672	ALLOCATE( s_bkg(jpi,jpj,jpk) )
673	ALLOCATE( u_bkg(jpi,jpj,jpk) )
674	ALLOCATE( v_bkg(jpi,jpj,jpk) )
675	ALLOCATE( ssh_bkg(jpi,jpj) )
676
677	t_bkg(:,:,:) = 0.0
678	s_bkg(:,:,:) = 0.0
679	u_bkg(:,:,:) = 0.0
680	v_bkg(:,:,:) = 0.0
681	ssh_bkg(:,:) = 0.0
682
683	!--------------------------------------------------------------------
684	! Read from file the background state at analysis time
685	!--------------------------------------------------------------------
686
687	CALL iom_open( c_asmdin, inum )
688
689	CALL iom_get( inum, 'rdastp', zdate_bkg )
690
691	IF(lwp) THEN
692	WRITE(numout,*)
693	WRITE(numout,*) 'asm_inc_init : Assimilation background state valid at : ', &
694	& NINT( zdate_bkg )
695	WRITE(numout,*) '~~~~~~~~~~~~'
696	ENDIF
697
698	IF ( NINT( zdate_bkg ) /= iitdin_date ) &
699	& CALL ctl_warn( ' Validity time of assimilation background state does', &
700	& ' not agree with Direct Initialization time' )
701
702	IF ( ln_trainc ) THEN
703	CALL iom_get( inum, jpdom_autoglo, 'tn', t_bkg )
704	CALL iom_get( inum, jpdom_autoglo, 'sn', s_bkg )
705	t_bkg(:,:,:) = t_bkg(:,:,:) * tmask(:,:,:)
706	s_bkg(:,:,:) = s_bkg(:,:,:) * tmask(:,:,:)
707	ENDIF
708
709	IF ( ln_dyninc ) THEN
710	CALL iom_get( inum, jpdom_autoglo, 'un', u_bkg )
711	CALL iom_get( inum, jpdom_autoglo, 'vn', v_bkg )
712	u_bkg(:,:,:) = u_bkg(:,:,:) * umask(:,:,:)
713	v_bkg(:,:,:) = v_bkg(:,:,:) * vmask(:,:,:)
714	ENDIF
715
716	IF ( ln_sshinc ) THEN
717	CALL iom_get( inum, jpdom_autoglo, 'sshn', ssh_bkg )
718	ssh_bkg(:,:) = ssh_bkg(:,:) * tmask(:,:,1)
719	ENDIF
720
721	CALL iom_close( inum )
722
723	ENDIF
724
725	IF ( lk_bgcinc ) THEN
726	CALL asm_bgc_init_bkg
727	ENDIF
728	!
729	END SUBROUTINE asm_inc_init
730
731
732	SUBROUTINE calc_date( kit000, kt, kdate0, kdate )
733	!!----------------------------------------------------------------------
734	!! * ROUTINE calc_date *
735	!!
736	!! ** Purpose : Compute the calendar date YYYYMMDD at a given time step.
737	!!
738	!! ** Method : Compute the calendar date YYYYMMDD at a given time step.
739	!!
740	!! ** Action :
741	!!----------------------------------------------------------------------
742	INTEGER, INTENT(IN) :: kit000 ! Initial time step
743	INTEGER, INTENT(IN) :: kt ! Current time step referenced to kit000
744	INTEGER, INTENT(IN) :: kdate0 ! Initial date
745	INTEGER, INTENT(OUT) :: kdate ! Current date reference to kdate0
746	!
747	INTEGER :: iyea0 ! Initial year
748	INTEGER :: imon0 ! Initial month
749	INTEGER :: iday0 ! Initial day
750	INTEGER :: iyea ! Current year
751	INTEGER :: imon ! Current month
752	INTEGER :: iday ! Current day
753	INTEGER :: idaystp ! Number of days between initial and current date
754	INTEGER :: idaycnt ! Day counter
755
756	INTEGER, DIMENSION(12) :: imonth_len !: length in days of the months of the current year
757
758	!-----------------------------------------------------------------------
759	! Compute the calendar date YYYYMMDD
760	!-----------------------------------------------------------------------
761
762	! Initial date
763	iyea0 = kdate0 / 10000
764	imon0 = ( kdate0 - ( iyea0 * 10000 ) ) / 100
765	iday0 = kdate0 - ( iyea0 * 10000 ) - ( imon0 * 100 )
766
767	! Check that kt >= kit000 - 1
768	IF ( kt < kit000 - 1 ) CALL ctl_stop( ' kt must be >= kit000 - 1')
769
770	! If kt = kit000 - 1 then set the date to the restart date
771	IF ( kt == kit000 - 1 ) THEN
772
773	kdate = ndastp
774	RETURN
775
776	ENDIF
777
778	! Compute the number of days from the initial date
779	idaystp = INT( REAL( kt - kit000 ) * rdt / 86400. )
780
781	iday = iday0
782	imon = imon0
783	iyea = iyea0
784	idaycnt = 0
785
786	CALL calc_month_len( iyea, imonth_len )
787
788	DO WHILE ( idaycnt < idaystp )
789	iday = iday + 1
790	IF ( iday > imonth_len(imon) ) THEN
791	iday = 1
792	imon = imon + 1
793	ENDIF
794	IF ( imon > 12 ) THEN
795	imon = 1
796	iyea = iyea + 1
797	CALL calc_month_len( iyea, imonth_len ) ! update month lengths
798	ENDIF
799	idaycnt = idaycnt + 1
800	END DO
801	!
802	kdate = iyea * 10000 + imon * 100 + iday
803	!
804	END SUBROUTINE
805
806
807	SUBROUTINE calc_month_len( iyear, imonth_len )
808	!!----------------------------------------------------------------------
809	!! * ROUTINE calc_month_len *
810	!!
811	!! ** Purpose : Compute the number of days in a months given a year.
812	!!
813	!! ** Method :
814	!!----------------------------------------------------------------------
815	INTEGER, DIMENSION(12) :: imonth_len !: length in days of the months of the current year
816	INTEGER :: iyear !: year
817	!!----------------------------------------------------------------------
818	!
819	! length of the month of the current year (from nleapy, read in namelist)
820	IF ( nleapy < 2 ) THEN
821	imonth_len(:) = (/ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 /)
822	IF ( nleapy == 1 ) THEN ! we are using calendar with leap years
823	IF ( MOD(iyear, 4) == 0 .AND. ( MOD(iyear, 400) == 0 .OR. MOD(iyear, 100) /= 0 ) ) THEN
824	imonth_len(2) = 29
825	ENDIF
826	ENDIF
827	ELSE
828	imonth_len(:) = nleapy ! all months with nleapy days per year
829	ENDIF
830	!
831	END SUBROUTINE
832
833
834	SUBROUTINE tra_asm_inc( kt )
835	!!----------------------------------------------------------------------
836	!! * ROUTINE tra_asm_inc *
837	!!
838	!! ** Purpose : Apply the tracer (T and S) assimilation increments
839	!!
840	!! ** Method : Direct initialization or Incremental Analysis Updating
841	!!
842	!! ** Action :
843	!!----------------------------------------------------------------------
844	INTEGER, INTENT(IN) :: kt ! Current time step
845	!
846	INTEGER :: ji,jj,jk
847	INTEGER :: it
848	REAL(wp) :: zincwgt ! IAU weight for current time step
849	REAL (wp), DIMENSION(jpi,jpj,jpk) :: fzptnz ! 3d freezing point values
850	!!----------------------------------------------------------------------
851
852	! freezing point calculation taken from oc_fz_pt (but calculated for all depths)
853	! used to prevent the applied increments taking the temperature below the local freezing point
854
855	DO jk = 1, jpkm1
856	CALL eos_fzp( tsn(:,:,jk,jp_sal), fzptnz(:,:,jk), fsdept(:,:,jk) )
857	END DO
858
859	IF ( ln_asmiau ) THEN
860
861	!--------------------------------------------------------------------
862	! Incremental Analysis Updating
863	!--------------------------------------------------------------------
864
865	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
866
867	it = kt - nit000 + 1
868	zincwgt = wgtiau(it) / rdt ! IAU weight for the current time step
869
870	IF(lwp) THEN
871	WRITE(numout,*)
872	WRITE(numout,*) 'tra_asm_inc : Tracer IAU at time step = ', kt,' with IAU weight = ', wgtiau(it)
873	WRITE(numout,*) '~~~~~~~~~~~~'
874	ENDIF
875
876	! Update the tracer tendencies
877	DO jk = 1, jpkm1
878	IF (ln_temnofreeze) THEN
879	! Do not apply negative increments if the temperature will fall below freezing
880	WHERE(t_bkginc(:,:,jk) > 0.0_wp .OR. &
881	& tsn(:,:,jk,jp_tem) + tsa(:,:,jk,jp_tem) + t_bkginc(:,:,jk) * wgtiau(it) > fzptnz(:,:,jk) )
882	tsa(:,:,jk,jp_tem) = tsa(:,:,jk,jp_tem) + t_bkginc(:,:,jk) * zincwgt
883	END WHERE
884	ELSE
885	tsa(:,:,jk,jp_tem) = tsa(:,:,jk,jp_tem) + t_bkginc(:,:,jk) * zincwgt
886	ENDIF
887	IF (ln_salfix) THEN
888	! Do not apply negative increments if the salinity will fall below a specified
889	! minimum value salfixmin
890	WHERE(s_bkginc(:,:,jk) > 0.0_wp .OR. &
891	& tsn(:,:,jk,jp_sal) + tsa(:,:,jk,jp_sal) + s_bkginc(:,:,jk) * wgtiau(it) > salfixmin )
892	tsa(:,:,jk,jp_sal) = tsa(:,:,jk,jp_sal) + s_bkginc(:,:,jk) * zincwgt
893	END WHERE
894	ELSE
895	tsa(:,:,jk,jp_sal) = tsa(:,:,jk,jp_sal) + s_bkginc(:,:,jk) * zincwgt
896	ENDIF
897	END DO
898
899	ENDIF
900
901	IF ( kt == nitiaufin_r + 1 ) THEN ! For bias crcn to work
902	DEALLOCATE( t_bkginc )
903	DEALLOCATE( s_bkginc )
904	ENDIF
905
906
907	ELSEIF ( ln_asmdin ) THEN
908
909	!--------------------------------------------------------------------
910	! Direct Initialization
911	!--------------------------------------------------------------------
912
913	IF ( kt == nitdin_r ) THEN
914
915	neuler = 0 ! Force Euler forward step
916
917	! Initialize the now fields with the background + increment
918	IF (ln_temnofreeze) THEN
919	! Do not apply negative increments if the temperature will fall below freezing
920	WHERE( t_bkginc(:,:,:) > 0.0_wp .OR. tsn(:,:,:,jp_tem) + t_bkginc(:,:,:) > fzptnz(:,:,:) )
921	tsn(:,:,:,jp_tem) = t_bkg(:,:,:) + t_bkginc(:,:,:)
922	END WHERE
923	ELSE
924	tsn(:,:,:,jp_tem) = t_bkg(:,:,:) + t_bkginc(:,:,:)
925	ENDIF
926	IF (ln_salfix) THEN
927	! Do not apply negative increments if the salinity will fall below a specified
928	! minimum value salfixmin
929	WHERE( s_bkginc(:,:,:) > 0.0_wp .OR. tsn(:,:,:,jp_sal) + s_bkginc(:,:,:) > salfixmin )
930	tsn(:,:,:,jp_sal) = s_bkg(:,:,:) + s_bkginc(:,:,:)
931	END WHERE
932	ELSE
933	tsn(:,:,:,jp_sal) = s_bkg(:,:,:) + s_bkginc(:,:,:)
934	ENDIF
935
936	tsb(:,:,:,:) = tsn(:,:,:,:) ! Update before fields
937
938	CALL eos( tsb, rhd, rhop, gdept_0(:,:,:) ) ! Before potential and in situ densities
939	!!gm fabien
940	! CALL eos( tsb, rhd, rhop ) ! Before potential and in situ densities
941	!!gm
942
943
944	IF( ln_zps .AND. .NOT. lk_c1d .AND. .NOT. ln_isfcav) &
945	& CALL zps_hde ( kt, jpts, tsb, gtsu, gtsv, & ! Partial steps: before horizontal gradient
946	& rhd, gru , grv ) ! of t, s, rd at the last ocean level
947	IF( ln_zps .AND. .NOT. lk_c1d .AND. ln_isfcav) &
948	& CALL zps_hde_isf( nit000, jpts, tsb, gtsu, gtsv, & ! Partial steps for top cell (ISF)
949	& rhd, gru , grv , aru , arv , gzu , gzv , ge3ru , ge3rv , &
950	& gtui, gtvi, grui, grvi, arui, arvi, gzui, gzvi, ge3rui, ge3rvi ) ! of t, s, rd at the last ocean level
951
952	#if defined key_zdfkpp
953	CALL eos( tsn, rhd, fsdept_n(:,:,:) ) ! Compute rhd
954	!!gm fabien CALL eos( tsn, rhd ) ! Compute rhd
955	#endif
956
957	DEALLOCATE( t_bkginc )
958	DEALLOCATE( s_bkginc )
959	DEALLOCATE( t_bkg )
960	DEALLOCATE( s_bkg )
961	ENDIF
962	!
963	ENDIF
964	! Perhaps the following call should be in step
965	IF ( ln_seaiceinc ) CALL seaice_asm_inc ( kt ) ! apply sea ice concentration increment
966	IF ( ln_sitinc ) CALL sit_asm_inc ( kt ) ! apply sea ice thickness increment
967	!
968	END SUBROUTINE tra_asm_inc
969
970
971	SUBROUTINE dyn_asm_inc( kt )
972	!!----------------------------------------------------------------------
973	!! * ROUTINE dyn_asm_inc *
974	!!
975	!! ** Purpose : Apply the dynamics (u and v) assimilation increments.
976	!!
977	!! ** Method : Direct initialization or Incremental Analysis Updating.
978	!!
979	!! ** Action :
980	!!----------------------------------------------------------------------
981	INTEGER, INTENT(IN) :: kt ! Current time step
982	!
983	INTEGER :: jk
984	INTEGER :: it
985	REAL(wp) :: zincwgt ! IAU weight for current time step
986	!!----------------------------------------------------------------------
987
988	IF ( ln_asmiau ) THEN
989
990	!--------------------------------------------------------------------
991	! Incremental Analysis Updating
992	!--------------------------------------------------------------------
993
994	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
995
996	it = kt - nit000 + 1
997	zincwgt = wgtiau(it) / rdt ! IAU weight for the current time step
998
999	IF(lwp) THEN
1000	WRITE(numout,*)
1001	WRITE(numout,*) 'dyn_asm_inc : Dynamics IAU at time step = ', &
1002	& kt,' with IAU weight = ', wgtiau(it)
1003	WRITE(numout,*) '~~~~~~~~~~~~'
1004	ENDIF
1005
1006	! Update the dynamic tendencies
1007	DO jk = 1, jpkm1
1008	ua(:,:,jk) = ua(:,:,jk) + u_bkginc(:,:,jk) * zincwgt
1009	va(:,:,jk) = va(:,:,jk) + v_bkginc(:,:,jk) * zincwgt
1010	END DO
1011
1012	IF ( kt == nitiaufin_r ) THEN
1013	DEALLOCATE( u_bkginc )
1014	DEALLOCATE( v_bkginc )
1015	ENDIF
1016
1017	ENDIF
1018
1019	ELSEIF ( ln_asmdin ) THEN
1020
1021	!--------------------------------------------------------------------
1022	! Direct Initialization
1023	!--------------------------------------------------------------------
1024
1025	IF ( kt == nitdin_r ) THEN
1026
1027	neuler = 0 ! Force Euler forward step
1028
1029	! Initialize the now fields with the background + increment
1030	un(:,:,:) = u_bkg(:,:,:) + u_bkginc(:,:,:)
1031	vn(:,:,:) = v_bkg(:,:,:) + v_bkginc(:,:,:)
1032
1033	ub(:,:,:) = un(:,:,:) ! Update before fields
1034	vb(:,:,:) = vn(:,:,:)
1035
1036	DEALLOCATE( u_bkg )
1037	DEALLOCATE( v_bkg )
1038	DEALLOCATE( u_bkginc )
1039	DEALLOCATE( v_bkginc )
1040	ENDIF
1041	!
1042	ENDIF
1043	!
1044	END SUBROUTINE dyn_asm_inc
1045
1046
1047	SUBROUTINE ssh_asm_inc( kt )
1048	!!----------------------------------------------------------------------
1049	!! * ROUTINE ssh_asm_inc *
1050	!!
1051	!! ** Purpose : Apply the sea surface height assimilation increment.
1052	!!
1053	!! ** Method : Direct initialization or Incremental Analysis Updating.
1054	!!
1055	!! ** Action :
1056	!!----------------------------------------------------------------------
1057	INTEGER, INTENT(IN) :: kt ! Current time step
1058	!
1059	INTEGER :: it
1060	INTEGER :: jk
1061	REAL(wp) :: zincwgt ! IAU weight for current time step
1062	!!----------------------------------------------------------------------
1063
1064	IF ( ln_asmiau ) THEN
1065
1066	!--------------------------------------------------------------------
1067	! Incremental Analysis Updating
1068	!--------------------------------------------------------------------
1069
1070	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
1071
1072	it = kt - nit000 + 1
1073	zincwgt = wgtiau(it) / rdt ! IAU weight for the current time step
1074
1075	IF(lwp) THEN
1076	WRITE(numout,*)
1077	WRITE(numout,*) 'ssh_asm_inc : SSH IAU at time step = ', &
1078	& kt,' with IAU weight = ', wgtiau(it)
1079	WRITE(numout,*) '~~~~~~~~~~~~'
1080	ENDIF
1081
1082	! Save the tendency associated with the IAU weighted SSH increment
1083	! (applied in dynspg.*)
1084	#if defined key_asminc
1085	ssh_iau(:,:) = ssh_bkginc(:,:) * zincwgt
1086	#endif
1087	IF ( kt == nitiaufin_r ) THEN
1088	DEALLOCATE( ssh_bkginc )
1089	ENDIF
1090
1091	#if defined key_asminc
1092	ELSE
1093	ssh_iau(:,:) = 0._wp
1094	#endif
1095	ENDIF
1096
1097	ELSEIF ( ln_asmdin ) THEN
1098
1099	!--------------------------------------------------------------------
1100	! Direct Initialization
1101	!--------------------------------------------------------------------
1102
1103	IF ( kt == nitdin_r ) THEN
1104
1105	neuler = 0 ! Force Euler forward step
1106
1107	! Initialize the now fields the background + increment
1108	sshn(:,:) = ssh_bkg(:,:) + ssh_bkginc(:,:)
1109
1110	! Update before fields
1111	sshb(:,:) = sshn(:,:)
1112
1113	IF( lk_vvl ) THEN
1114	DO jk = 1, jpk
1115	fse3t_b(:,:,jk) = fse3t_n(:,:,jk)
1116	END DO
1117	ENDIF
1118
1119	DEALLOCATE( ssh_bkg )
1120	DEALLOCATE( ssh_bkginc )
1121
1122	ENDIF
1123	!
1124	ENDIF
1125	!
1126	END SUBROUTINE ssh_asm_inc
1127
1128	SUBROUTINE sit_asm_inc( kt, kindic )
1129	!!----------------------------------------------------------------------
1130	!! * ROUTINE sit_asm_inc *
1131	!!
1132	!! ** Purpose : Apply the sea ice thickness assimilation increment.
1133	!!
1134	!! ** Method : Direct initialization or Incremental Analysis Updating.
1135	!!
1136	!! ** Action :
1137	!!
1138	!!----------------------------------------------------------------------
1139	IMPLICIT NONE
1140	!
1141	INTEGER, INTENT(in) :: kt ! Current time step
1142	INTEGER, INTENT(in), OPTIONAL :: kindic ! flag for disabling the deallocation
1143	!
1144	INTEGER :: it
1145	REAL(wp) :: zincwgt ! IAU weight for current time step
1146	!!----------------------------------------------------------------------
1147
1148	IF ( ln_asmiau ) THEN
1149
1150	!--------------------------------------------------------------------
1151	! Incremental Analysis Updating
1152	!--------------------------------------------------------------------
1153
1154	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
1155
1156	it = kt - nit000 + 1
1157	zincwgt = wgtiau(it) ! IAU weight for the current time step
1158	! note this is not a tendency so should not be divided by rdt (as with the tracer and other increments)
1159	! EF: Actually CICE is expecting a tendency so is divided by rdt below
1160
1161	IF(lwp) THEN
1162	WRITE(numout,*)
1163	WRITE(numout,*) 'sit_asm_inc : sea ice thick IAU at time step = ', &
1164	& kt,' with IAU weight = ', wgtiau(it)
1165	WRITE(numout,*) '~~~~~~~~~~~~'
1166	ENDIF
1167
1168	#if defined key_cice && defined key_asminc
1169	! Sea-ice thickness : CICE case. Pass ice thickness increment tendency into CICE
1170	ndsit_da(:,:) = sit_bkginc(:,:) * zincwgt / rdt
1171	#endif
1172
1173	IF ( kt == nitiaufin_r ) THEN
1174	DEALLOCATE( sit_bkginc )
1175	ENDIF
1176
1177	ELSE
1178
1179	#if defined key_cice && defined key_asminc
1180	! Sea-ice thickness : CICE case. Zero ice increment tendency into CICE
1181	ndsit_da(:,:) = 0.0_wp
1182	#endif
1183
1184	ENDIF
1185
1186	ELSEIF ( ln_asmdin ) THEN
1187
1188	!--------------------------------------------------------------------
1189	! Direct Initialization
1190	!--------------------------------------------------------------------
1191
1192	IF ( kt == nitdin_r ) THEN
1193
1194	neuler = 0 ! Force Euler forward step
1195
1196	#if defined key_cice && defined key_asminc
1197	! Sea-ice thickness : CICE case. Pass ice thickness increment tendency into CICE
1198	ndsit_da(:,:) = sit_bkginc(:,:) / rdt
1199	#endif
1200	IF ( .NOT. PRESENT(kindic) ) THEN
1201	DEALLOCATE( sit_bkginc )
1202	END IF
1203
1204	ELSE
1205
1206	#if defined key_cice && defined key_asminc
1207	! Sea-ice thicnkness : CICE case. Zero ice thickness increment tendency into CICE
1208	ndsit_da(:,:) = 0.0_wp
1209	#endif
1210
1211	ENDIF
1212
1213	ENDIF
1214
1215	END SUBROUTINE sit_asm_inc
1216
1217	SUBROUTINE seaice_asm_inc( kt, kindic )
1218	!!----------------------------------------------------------------------
1219	!! * ROUTINE seaice_asm_inc *
1220	!!
1221	!! ** Purpose : Apply the sea ice assimilation increment.
1222	!!
1223	!! ** Method : Direct initialization or Incremental Analysis Updating.
1224	!!
1225	!! ** Action :
1226	!!
1227	!!----------------------------------------------------------------------
1228	IMPLICIT NONE
1229	!
1230	INTEGER, INTENT(in) :: kt ! Current time step
1231	INTEGER, INTENT(in), OPTIONAL :: kindic ! flag for disabling the deallocation
1232	!
1233	INTEGER :: it
1234	REAL(wp) :: zincwgt ! IAU weight for current time step
1235	#if defined key_lim2
1236	REAL(wp), DIMENSION(jpi,jpj) :: zofrld, zohicif, zseaicendg, zhicifinc ! LIM
1237	REAL(wp) :: zhicifmin = 0.5_wp ! ice minimum depth in metres
1238	#endif
1239	!!----------------------------------------------------------------------
1240
1241	IF ( ln_asmiau ) THEN
1242
1243	!--------------------------------------------------------------------
1244	! Incremental Analysis Updating
1245	!--------------------------------------------------------------------
1246
1247	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
1248
1249	it = kt - nit000 + 1
1250	zincwgt = wgtiau(it) ! IAU weight for the current time step
1251	! note this is not a tendency so should not be divided by rdt (as with the tracer and other increments)
1252
1253	IF(lwp) THEN
1254	WRITE(numout,*)
1255	WRITE(numout,*) 'seaice_asm_inc : sea ice conc IAU at time step = ', &
1256	& kt,' with IAU weight = ', wgtiau(it)
1257	WRITE(numout,*) '~~~~~~~~~~~~'
1258	ENDIF
1259
1260	! Sea-ice : LIM-3 case (to add)
1261
1262	#if defined key_lim2
1263	! Sea-ice : LIM-2 case
1264	zofrld (:,:) = frld(:,:)
1265	zohicif(:,:) = hicif(:,:)
1266	!
1267	frld = MIN( MAX( frld (:,:) - seaice_bkginc(:,:) * zincwgt, 0.0_wp), 1.0_wp)
1268	pfrld = MIN( MAX( pfrld(:,:) - seaice_bkginc(:,:) * zincwgt, 0.0_wp), 1.0_wp)
1269	fr_i(:,:) = 1.0_wp - frld(:,:) ! adjust ice fraction
1270	!
1271	zseaicendg(:,:) = zofrld(:,:) - frld(:,:) ! find out actual sea ice nudge applied
1272	!
1273	! Nudge sea ice depth to bring it up to a required minimum depth
1274	WHERE( zseaicendg(:,:) > 0.0_wp .AND. hicif(:,:) < zhicifmin )
1275	zhicifinc(:,:) = (zhicifmin - hicif(:,:)) * zincwgt
1276	ELSEWHERE
1277	zhicifinc(:,:) = 0.0_wp
1278	END WHERE
1279	!
1280	! nudge ice depth
1281	hicif (:,:) = hicif (:,:) + zhicifinc(:,:)
1282	phicif(:,:) = phicif(:,:) + zhicifinc(:,:)
1283	!
1284	! seaice salinity balancing (to add)
1285	#endif
1286
1287	#if defined key_cice && defined key_asminc
1288	! Sea-ice : CICE case. Pass ice increment tendency into CICE
1289	ndaice_da(:,:) = seaice_bkginc(:,:) * zincwgt / rdt
1290	#endif
1291
1292	IF ( kt == nitiaufin_r ) THEN
1293	DEALLOCATE( seaice_bkginc )
1294	ENDIF
1295
1296	ELSE
1297
1298	#if defined key_cice && defined key_asminc
1299	! Sea-ice : CICE case. Zero ice increment tendency into CICE
1300	ndaice_da(:,:) = 0.0_wp
1301	#endif
1302
1303	ENDIF
1304
1305	ELSEIF ( ln_asmdin ) THEN
1306
1307	!--------------------------------------------------------------------
1308	! Direct Initialization
1309	!--------------------------------------------------------------------
1310
1311	IF ( kt == nitdin_r ) THEN
1312
1313	neuler = 0 ! Force Euler forward step
1314
1315	! Sea-ice : LIM-3 case (to add)
1316
1317	#if defined key_lim2
1318	! Sea-ice : LIM-2 case.
1319	zofrld(:,:)=frld(:,:)
1320	zohicif(:,:)=hicif(:,:)
1321	!
1322	! Initialize the now fields the background + increment
1323	frld (:,:) = MIN( MAX( frld(:,:) - seaice_bkginc(:,:), 0.0_wp), 1.0_wp)
1324	pfrld(:,:) = frld(:,:)
1325	fr_i (:,:) = 1.0_wp - frld(:,:) ! adjust ice fraction
1326	zseaicendg(:,:) = zofrld(:,:) - frld(:,:) ! find out actual sea ice nudge applied
1327	!
1328	! Nudge sea ice depth to bring it up to a required minimum depth
1329	WHERE( zseaicendg(:,:) > 0.0_wp .AND. hicif(:,:) < zhicifmin )
1330	zhicifinc(:,:) = (zhicifmin - hicif(:,:)) * zincwgt
1331	ELSEWHERE
1332	zhicifinc(:,:) = 0.0_wp
1333	END WHERE
1334	!
1335	! nudge ice depth
1336	hicif (:,:) = hicif (:,:) + zhicifinc(:,:)
1337	phicif(:,:) = phicif(:,:)
1338	!
1339	! seaice salinity balancing (to add)
1340	#endif
1341
1342	#if defined key_cice && defined key_asminc
1343	! Sea-ice : CICE case. Pass ice increment tendency into CICE
1344	ndaice_da(:,:) = seaice_bkginc(:,:) / rdt
1345	#endif
1346	IF ( .NOT. PRESENT(kindic) ) THEN
1347	DEALLOCATE( seaice_bkginc )
1348	END IF
1349
1350	ELSE
1351
1352	#if defined key_cice && defined key_asminc
1353	! Sea-ice : CICE case. Zero ice increment tendency into CICE
1354	ndaice_da(:,:) = 0.0_wp
1355	#endif
1356
1357	ENDIF
1358
1359	!#if defined defined key_lim2 \|\| defined key_cice
1360	!
1361	! IF (ln_seaicebal ) THEN
1362	! !! balancing salinity increments
1363	! !! simple case from limflx.F90 (doesn't include a mass flux)
1364	! !! assumption is that as ice concentration is reduced or increased
1365	! !! the snow and ice depths remain constant
1366	! !! note that snow is being created where ice concentration is being increased
1367	! !! - could be more sophisticated and
1368	! !! not do this (but would need to alter h_snow)
1369	!
1370	! usave(:,:,:)=sb(:,:,:) ! use array as a temporary store
1371	!
1372	! DO jj = 1, jpj
1373	! DO ji = 1, jpi
1374	! ! calculate change in ice and snow mass per unit area
1375	! ! positive values imply adding salt to the ocean (results from ice formation)
1376	! ! fwf : ice formation and melting
1377	!
1378	! zfons = ( -nfresh_da(ji,jj)soce + nfsalt_da(ji,jj) )rdt
1379	!
1380	! ! change salinity down to mixed layer depth
1381	! mld=hmld_kara(ji,jj)
1382	!
1383	! ! prevent small mld
1384	! ! less than 10m can cause salinity instability
1385	! IF (mld < 10) mld=10
1386	!
1387	! ! set to bottom of a level
1388	! DO jk = jpk-1, 2, -1
1389	! IF ((mld > gdepw(ji,jj,jk)) .and. (mld < gdepw(ji,jj,jk+1))) THEN
1390	! mld=gdepw(ji,jj,jk+1)
1391	! jkmax=jk
1392	! ENDIF
1393	! ENDDO
1394	!
1395	! ! avoid applying salinity balancing in shallow water or on land
1396	! !
1397	!
1398	! ! dsal_ocn (psu kg m^-2) / (kg m^-3 * m)
1399	!
1400	! dsal_ocn=0.0_wp
1401	! sal_thresh=5.0_wp ! minimum salinity threshold for salinity balancing
1402	!
1403	! if (tmask(ji,jj,1) > 0 .AND. tmask(ji,jj,jkmax) > 0 ) &
1404	! dsal_ocn = zfons / (rhop(ji,jj,1) * mld)
1405	!
1406	! ! put increments in for levels in the mixed layer
1407	! ! but prevent salinity below a threshold value
1408	!
1409	! DO jk = 1, jkmax
1410	!
1411	! IF (dsal_ocn > 0.0_wp .or. sb(ji,jj,jk)+dsal_ocn > sal_thresh) THEN
1412	! sb(ji,jj,jk) = sb(ji,jj,jk) + dsal_ocn
1413	! sn(ji,jj,jk) = sn(ji,jj,jk) + dsal_ocn
1414	! ENDIF
1415	!
1416	! ENDDO
1417	!
1418	! ! ! salt exchanges at the ice/ocean interface
1419	! ! zpmess = zfons / rdt_ice ! rdt_ice is ice timestep
1420	! !
1421	! !! Adjust fsalt. A +ve fsalt means adding salt to ocean
1422	! !! fsalt(ji,jj) = fsalt(ji,jj) + zpmess ! adjust fsalt
1423	! !!
1424	! !! emps(ji,jj) = emps(ji,jj) + zpmess ! or adjust emps (see icestp1d)
1425	! !! ! E-P (kg m-2 s-2)
1426	! ! emp(ji,jj) = emp(ji,jj) + zpmess ! E-P (kg m-2 s-2)
1427	! ENDDO !ji
1428	! ENDDO !jj!
1429	!
1430	! ENDIF !ln_seaicebal
1431	!
1432	!#endif
1433
1434	ENDIF
1435
1436	END SUBROUTINE seaice_asm_inc
1437
1438
1439	SUBROUTINE bgc_asm_inc( kt )
1440	!!----------------------------------------------------------------------
1441	!! * ROUTINE bgc_asm_inc *
1442	!!
1443	!! ** Purpose : Apply the biogeochemistry assimilation increments
1444	!!
1445	!! ** Method : Call relevant routines in asmbgc
1446	!!
1447	!! ** Action : Call relevant routines in asmbgc
1448	!!
1449	!!----------------------------------------------------------------------
1450	!!
1451	INTEGER, INTENT(in ) :: kt ! Current time step
1452	!
1453	INTEGER :: icycper ! Dimension of wgtiau
1454	!!
1455	!!----------------------------------------------------------------------
1456
1457	icycper = SIZE( wgtiau )
1458
1459	! Ocean colour variables first
1460	IF ( ln_slchltotinc .OR. ln_slchldiainc .OR. ln_slchlnoninc .OR. &
1461	& ln_slchlnaninc .OR. ln_slchlpicinc .OR. ln_slchldininc .OR. &
1462	& ln_schltotinc .OR. ln_slphytotinc .OR. ln_slphydiainc .OR. &
1463	& ln_slphynoninc ) THEN
1464	CALL phyto2d_asm_inc( kt, ln_asmdin, ln_asmiau, icycper, wgtiau )
1465	ENDIF
1466
1467	! Surface pCO2/fCO2 next
1468	IF ( ln_sfco2inc .OR. ln_spco2inc ) THEN
1469	CALL pco2_asm_inc( kt, ln_asmdin, ln_asmiau, icycper, wgtiau, &
1470	& ln_trainc, t_bkginc, s_bkginc )
1471	ENDIF
1472
1473	! Profile pH next
1474	IF ( ln_pphinc ) THEN
1475	CALL ph_asm_inc( kt, ln_asmdin, ln_asmiau, icycper, wgtiau, &
1476	& ln_trainc, t_bkginc, s_bkginc )
1477	ENDIF
1478
1479	! Then chlorophyll profiles
1480	IF ( ln_plchltotinc .OR. ln_pchltotinc ) THEN
1481	CALL phyto3d_asm_inc( kt, ln_asmdin, ln_asmiau, icycper, wgtiau )
1482	ENDIF
1483
1484	! Remaining bgc profile variables
1485	IF ( ln_pno3inc .OR. ln_psi4inc .OR. ln_pdicinc .OR. &
1486	& ln_palkinc .OR. ln_po2inc .OR. ln_ppo4inc ) THEN
1487	CALL bgc3d_asm_inc( kt, ln_asmdin, ln_asmiau, icycper, wgtiau )
1488	ENDIF
1489
1490	END SUBROUTINE bgc_asm_inc
1491
1492	!!======================================================================
1493	END MODULE asminc

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source: branches/UKMO/AMM15_v3_6_STABLE_package_collate_sit/NEMOGCM/NEMO/OPA_SRC/ASM/asminc.F90 @ 12607

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