New URL for NEMO forge! http://forge.nemo-ocean.eu

Since March 2022 along with NEMO 4.2 release, the code development moved to a self-hosted GitLab.
This present forge is now archived and remained online for history.

asminc.F90 in branches/UKMO/dev_r5518_v3.4_asm_nemovar_community_bgc_ersem/NEMOGCM/NEMO/OPA_SRC/ASM – NEMO

Context Navigation

source: branches/UKMO/dev_r5518_v3.4_asm_nemovar_community_bgc_ersem/NEMOGCM/NEMO/OPA_SRC/ASM/asminc.F90 @ 7718

Last change on this file since 7718 was 7718, checked in by dford, 7 years ago
Update to correctly get BGC model parameters when writing balancing increments, and fix a comment.
File size: 65.5 KB

Line
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 seaice increment
24	!! logchl_asm_inc : Apply the logchl 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	#if defined key_top
56	USE trc, ONLY: &
57	& trn, &
58	& trb
59	USE par_trc, ONLY: &
60	& jptra
61	#endif
62	#if defined key_fabm
63	USE asmlogchlbal_ersem, ONLY: &
64	& asm_logchl_bal_ersem
65	USE par_fabm
66	#elif defined key_medusa && defined key_foam_medusa
67	USE asmlogchlbal_medusa, ONLY: &
68	& asm_logchl_bal_medusa
69	USE par_medusa
70	#elif defined key_hadocc
71	USE asmlogchlbal_hadocc, ONLY: &
72	& asm_logchl_bal_hadocc
73	USE par_hadocc
74	#endif
75
76	IMPLICIT NONE
77	PRIVATE
78
79	PUBLIC asm_inc_init !: Initialize the increment arrays and IAU weights
80	PUBLIC calc_date !: Compute the calendar date YYYYMMDD on a given step
81	PUBLIC tra_asm_inc !: Apply the tracer (T and S) increments
82	PUBLIC dyn_asm_inc !: Apply the dynamic (u and v) increments
83	PUBLIC ssh_asm_inc !: Apply the SSH increment
84	PUBLIC seaice_asm_inc !: Apply the seaice increment
85	PUBLIC logchl_asm_inc !: Apply the logchl increment
86
87	#if defined key_asminc
88	LOGICAL, PUBLIC, PARAMETER :: lk_asminc = .TRUE. !: Logical switch for assimilation increment interface
89	#else
90	LOGICAL, PUBLIC, PARAMETER :: lk_asminc = .FALSE. !: No assimilation increments
91	#endif
92	LOGICAL, PUBLIC :: ln_bkgwri = .FALSE. !: No output of the background state fields
93	LOGICAL, PUBLIC :: ln_balwri = .FALSE. !: No output of the assimilation balancing increments
94	LOGICAL, PUBLIC :: ln_avgbkg = .FALSE. !: No output of the mean background state fields
95	LOGICAL, PUBLIC :: ln_asmiau = .FALSE. !: No applying forcing with an assimilation increment
96	LOGICAL, PUBLIC :: ln_asmdin = .FALSE. !: No direct initialization
97	LOGICAL, PUBLIC :: ln_trainc = .FALSE. !: No tracer (T and S) assimilation increments
98	LOGICAL, PUBLIC :: ln_dyninc = .FALSE. !: No dynamics (u and v) assimilation increments
99	LOGICAL, PUBLIC :: ln_sshinc = .FALSE. !: No sea surface height assimilation increment
100	LOGICAL, PUBLIC :: ln_seaiceinc = .FALSE. !: No sea ice concentration increment
101	LOGICAL, PUBLIC :: ln_logchltotinc = .FALSE. !: No total log10(chlorophyll) increment
102	LOGICAL, PUBLIC :: ln_logchlpftinc = .FALSE. !: No PFT log10(chlorophyll) increment
103	LOGICAL, PUBLIC :: ln_salfix = .FALSE. !: Apply minimum salinity check
104	LOGICAL, PUBLIC :: ln_temnofreeze = .FALSE. !: Don't allow the temperature to drop below freezing
105	INTEGER, PUBLIC :: nn_divdmp !: Apply divergence damping filter nn_divdmp times
106
107	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: t_bkg , s_bkg !: Background temperature and salinity
108	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: u_bkg , v_bkg !: Background u- & v- velocity components
109	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: t_bkginc, s_bkginc !: Increment to the background T & S
110	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: u_bkginc, v_bkginc !: Increment to the u- & v-components
111	REAL(wp), PUBLIC, DIMENSION(:) , ALLOCATABLE :: wgtiau !: IAU weights for each time step
112	#if defined key_asminc
113	REAL(wp), PUBLIC, DIMENSION(:,:), ALLOCATABLE :: ssh_iau !: IAU-weighted sea surface height increment
114	#endif
115	! !!! time steps relative to the cycle interval [0,nitend-nit000-1]
116	INTEGER , PUBLIC :: nitbkg !: Time step of the background state used in the Jb term
117	INTEGER , PUBLIC :: nitdin !: Time step of the background state for direct initialization
118	INTEGER , PUBLIC :: nitiaustr !: Time step of the start of the IAU interval
119	INTEGER , PUBLIC :: nitiaufin !: Time step of the end of the IAU interval
120	INTEGER , PUBLIC :: nitavgbkg !: Number of timesteps to average assim bkg [0,nitavgbkg]
121	!
122	INTEGER , PUBLIC :: niaufn !: Type of IAU weighing function: = 0 Constant weighting
123	! !: = 1 Linear hat-like, centred in middle of IAU interval
124	REAL(wp), PUBLIC :: salfixmin !: Ensure that the salinity is larger than this value if (ln_salfix)
125
126	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: ssh_bkg, ssh_bkginc ! Background sea surface height and its increment
127	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: seaice_bkginc ! Increment to the background sea ice conc
128
129	REAL(wp), PUBLIC, DIMENSION(:,:,:), ALLOCATABLE :: logchl_bkginc !: Increment to background logchl
130	#if defined key_top
131	REAL(wp), PUBLIC, DIMENSION(:,:,:,:), ALLOCATABLE :: logchl_balinc !: Increment to BGC variables from logchl assim
132	#endif
133
134	INTEGER :: mld_choice = 4 !: choice of mld criteria to use for physics assimilation
135	!: 1) hmld - Turbocline/mixing depth [W points]
136	!: 2) hmlp - Density criterion (0.01 kg/m^3 change from 10m) [W points]
137	!: 3) hmld_kara - Kara MLD [Interpolated]
138	!: 4) hmld_tref - Temperature criterion (0.2 K change from surface) [T points]
139
140	INTEGER :: mld_choice_bgc = 4 !: choice of mld criteria to use for physics assimilation
141	!: 1) hmld - Turbocline/mixing depth [W points]
142	!: 2) hmlp - Density criterion (0.01 kg/m^3 change from 10m) [W points]
143	!: 3) hmld_kara - Kara MLD [Interpolated]
144	!: 4) hmld_tref - Temperature criterion (0.2 K change from surface) [T points]
145	!: 5) hmlpt - Density criterion (0.01 kg/m^3 change from 10m) [T points]
146
147	INTEGER :: nn_asmpfts = 0 !: number of logchl PFTs assimilated
148
149	!! * Substitutions
150	# include "domzgr_substitute.h90"
151	# include "ldfdyn_substitute.h90"
152	# include "vectopt_loop_substitute.h90"
153	!!----------------------------------------------------------------------
154	!! NEMO/OPA 3.3 , NEMO Consortium (2010)
155	!! $Id$
156	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
157	!!----------------------------------------------------------------------
158	CONTAINS
159
160	SUBROUTINE asm_inc_init
161	!!----------------------------------------------------------------------
162	!! * ROUTINE asm_inc_init *
163	!!
164	!! ** Purpose : Initialize the assimilation increment and IAU weights.
165	!!
166	!! ** Method : Initialize the assimilation increment and IAU weights.
167	!!
168	!! ** Action :
169	!!----------------------------------------------------------------------
170	INTEGER :: ji, jj, jk, jt ! dummy loop indices
171	INTEGER :: imid, inum ! local integers
172	INTEGER :: ios ! Local integer output status for namelist read
173	INTEGER :: iiauper ! Number of time steps in the IAU period
174	INTEGER :: icycper ! Number of time steps in the cycle
175	INTEGER :: iitend_date ! Date YYYYMMDD of final time step
176	INTEGER :: iitbkg_date ! Date YYYYMMDD of background time step for Jb term
177	INTEGER :: iitdin_date ! Date YYYYMMDD of background time step for DI
178	INTEGER :: iitiaustr_date ! Date YYYYMMDD of IAU interval start time step
179	INTEGER :: iitiaufin_date ! Date YYYYMMDD of IAU interval final time step
180	INTEGER :: isurfstat ! Local integer for status of reading surft variable
181	INTEGER :: iitavgbkg_date ! Date YYYYMMDD of end of assim bkg averaging period
182	!
183	REAL(wp) :: znorm ! Normalization factor for IAU weights
184	REAL(wp) :: ztotwgt ! Value of time-integrated IAU weights (should be equal to one)
185	REAL(wp) :: z_inc_dateb ! Start date of interval on which increment is valid
186	REAL(wp) :: z_inc_datef ! End date of interval on which increment is valid
187	REAL(wp) :: zdate_bkg ! Date in background state file for DI
188	REAL(wp) :: zdate_inc ! Time axis in increments file
189	!
190	REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: &
191	& t_bkginc_2d ! file for reading in 2D
192	! ! temperature increments
193	REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: &
194	& z_mld ! Mixed layer depth
195
196	REAL(wp), POINTER, DIMENSION(:,:) :: hdiv ! 2D workspace
197	!
198	LOGICAL :: lk_surft ! Logical: T => Increments file contains surft variable
199	! so only apply surft increments.
200	!
201	CHARACTER(LEN=2) :: cl_pftstr
202	!!
203	NAMELIST/nam_asminc/ ln_bkgwri, ln_balwri, ln_avgbkg, &
204	& ln_trainc, ln_dyninc, ln_sshinc, &
205	& ln_logchltotinc, ln_logchlpftinc, &
206	& ln_asmdin, ln_asmiau, &
207	& nitbkg, nitdin, nitiaustr, nitiaufin, niaufn, &
208	& ln_salfix, salfixmin, nn_divdmp, nitavgbkg, mld_choice, &
209	& mld_choice_bgc
210	!!----------------------------------------------------------------------
211
212	!-----------------------------------------------------------------------
213	! Read Namelist nam_asminc : assimilation increment interface
214	!-----------------------------------------------------------------------
215
216	! Set default values
217	ln_bkgwri = .FALSE.
218	ln_balwri = .FALSE.
219	ln_avgbkg = .FALSE.
220	ln_trainc = .FALSE.
221	ln_dyninc = .FALSE.
222	ln_sshinc = .FALSE.
223	ln_seaiceinc = .FALSE.
224	ln_logchltotinc = .FALSE.
225	ln_logchlpftinc = .FALSE.
226	ln_asmdin = .FALSE.
227	ln_asmiau = .TRUE.
228	ln_salfix = .FALSE.
229	ln_temnofreeze = .FALSE.
230	salfixmin = -9999
231	nitbkg = 0
232	nitdin = 0
233	nitiaustr = 1
234	nitiaufin = 150
235	niaufn = 0
236	nitavgbkg = 1
237	#if defined key_fabm
238	nn_asmpfts = 4
239	#elif defined key_medusa && defined key_foam_medusa
240	nn_asmpfts = 2
241	#elif defined key_hadocc
242	nn_asmpfts = 1
243	#else
244	nn_asmpfts = 0
245	#endif
246
247	REWIND( numnam_ref ) ! Namelist nam_asminc in reference namelist : Assimilation increment
248	READ ( numnam_ref, nam_asminc, IOSTAT = ios, ERR = 901)
249	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nam_asminc in reference namelist', lwp )
250
251	REWIND( numnam_cfg ) ! Namelist nam_asminc in configuration namelist : Assimilation increment
252	READ ( numnam_cfg, nam_asminc, IOSTAT = ios, ERR = 902 )
253	902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'nam_asminc in configuration namelist', lwp )
254	IF(lwm) WRITE ( numond, nam_asminc )
255
256	IF ( ln_logchltotinc ) THEN
257	nn_asmpfts = 1
258	ELSE IF ( .NOT.( ln_logchlpftinc ) ) THEN
259	nn_asmpfts = 0
260	ENDIF
261
262	! Control print
263	IF(lwp) THEN
264	WRITE(numout,*)
265	WRITE(numout,*) 'asm_inc_init : Assimilation increment initialization :'
266	WRITE(numout,*) '~~~~~~~~~~~~'
267	WRITE(numout,*) ' Namelist namasm : set assimilation increment parameters'
268	WRITE(numout,*) ' Logical switch for writing out background state ln_bkgwri = ', ln_bkgwri
269	WRITE(numout,*) ' Logical switch for writing out balancing increments ln_balwri = ', ln_balwri
270	WRITE(numout,*) ' Logical switch for writing mean background state ln_avgbkg = ', ln_avgbkg
271	WRITE(numout,*) ' Logical switch for applying tracer increments ln_trainc = ', ln_trainc
272	WRITE(numout,*) ' Logical switch for applying velocity increments ln_dyninc = ', ln_dyninc
273	WRITE(numout,*) ' Logical switch for applying SSH increments ln_sshinc = ', ln_sshinc
274	WRITE(numout,*) ' Logical switch for Direct Initialization (DI) ln_asmdin = ', ln_asmdin
275	WRITE(numout,*) ' Logical switch for applying sea ice increments ln_seaiceinc = ', ln_seaiceinc
276	WRITE(numout,*) ' Logical switch for applying total logchl incs ln_logchltotinc = ', ln_logchltotinc
277	WRITE(numout,*) ' Logical switch for applying PFT logchl incs ln_logchlpftinc = ', ln_logchlpftinc
278	WRITE(numout,*) ' Number of logchl PFTs assimilated nn_asmpfts = ', nn_asmpfts
279	WRITE(numout,*) ' Logical switch for Incremental Analysis Updating (IAU) ln_asmiau = ', ln_asmiau
280	WRITE(numout,*) ' Timestep of background in [0,nitend-nit000-1] nitbkg = ', nitbkg
281	WRITE(numout,*) ' Timestep of background for DI in [0,nitend-nit000-1] nitdin = ', nitdin
282	WRITE(numout,*) ' Timestep of start of IAU interval in [0,nitend-nit000-1] nitiaustr = ', nitiaustr
283	WRITE(numout,*) ' Timestep of end of IAU interval in [0,nitend-nit000-1] nitiaufin = ', nitiaufin
284	WRITE(numout,*) ' Number of timesteps to average assim bkg [0,nitavgbkg] nitavgbkg = ', nitavgbkg
285	WRITE(numout,*) ' Type of IAU weighting function niaufn = ', niaufn
286	WRITE(numout,*) ' Logical switch for ensuring that the sa > salfixmin ln_salfix = ', ln_salfix
287	WRITE(numout,*) ' Minimum salinity after applying the increments salfixmin = ', salfixmin
288	WRITE(numout,*) ' Choice of MLD for physics assimilation mld_choice = ', mld_choice
289	WRITE(numout,*) ' Choice of MLD for BGC assimilation mld_choice_bgc = ', mld_choice_bgc
290	ENDIF
291
292	nitbkg_r = nitbkg + nit000 - 1 ! Background time referenced to nit000
293	nitdin_r = nitdin + nit000 - 1 ! Background time for DI referenced to nit000
294	nitiaustr_r = nitiaustr + nit000 - 1 ! Start of IAU interval referenced to nit000
295	nitiaufin_r = nitiaufin + nit000 - 1 ! End of IAU interval referenced to nit000
296	nitavgbkg_r = nitavgbkg + nit000 - 1 ! Averaging period referenced to nit000
297
298	iiauper = nitiaufin_r - nitiaustr_r + 1 ! IAU interval length
299	icycper = nitend - nit000 + 1 ! Cycle interval length
300
301	CALL calc_date( nit000, nitend , ndate0, iitend_date ) ! Date of final time step
302	CALL calc_date( nit000, nitbkg_r , ndate0, iitbkg_date ) ! Background time for Jb referenced to ndate0
303	CALL calc_date( nit000, nitdin_r , ndate0, iitdin_date ) ! Background time for DI referenced to ndate0
304	CALL calc_date( nit000, nitiaustr_r, ndate0, iitiaustr_date ) ! IAU start time referenced to ndate0
305	CALL calc_date( nit000, nitiaufin_r, ndate0, iitiaufin_date ) ! IAU end time referenced to ndate0
306	CALL calc_date( nit000, nitavgbkg_r, ndate0, iitavgbkg_date ) ! End of assim bkg averaging period referenced to ndate0
307	!
308	IF(lwp) THEN
309	WRITE(numout,*)
310	WRITE(numout,*) ' Time steps referenced to current cycle:'
311	WRITE(numout,*) ' iitrst = ', nit000 - 1
312	WRITE(numout,*) ' nit000 = ', nit000
313	WRITE(numout,*) ' nitend = ', nitend
314	WRITE(numout,*) ' nitbkg_r = ', nitbkg_r
315	WRITE(numout,*) ' nitdin_r = ', nitdin_r
316	WRITE(numout,*) ' nitiaustr_r = ', nitiaustr_r
317	WRITE(numout,*) ' nitiaufin_r = ', nitiaufin_r
318	WRITE(numout,*) ' nitavgbkg_r = ', nitavgbkg_r
319	WRITE(numout,*)
320	WRITE(numout,*) ' Dates referenced to current cycle:'
321	WRITE(numout,*) ' ndastp = ', ndastp
322	WRITE(numout,*) ' ndate0 = ', ndate0
323	WRITE(numout,*) ' iitend_date = ', iitend_date
324	WRITE(numout,*) ' iitbkg_date = ', iitbkg_date
325	WRITE(numout,*) ' iitdin_date = ', iitdin_date
326	WRITE(numout,*) ' iitiaustr_date = ', iitiaustr_date
327	WRITE(numout,*) ' iitiaufin_date = ', iitiaufin_date
328	WRITE(numout,*) ' iitavgbkg_date = ', iitavgbkg_date
329	ENDIF
330
331	IF ( nacc /= 0 ) &
332	& CALL ctl_stop( ' nacc /= 0 and key_asminc :', &
333	& ' Assimilation increments have only been implemented', &
334	& ' for synchronous time stepping' )
335
336	IF ( ( ln_asmdin ).AND.( ln_asmiau ) ) &
337	& CALL ctl_stop( ' ln_asmdin and ln_asmiau :', &
338	& ' Choose Direct Initialization OR Incremental Analysis Updating')
339
340	IF ( ( ( .NOT. ln_asmdin ).AND.( .NOT. ln_asmiau ) ) &
341	& .AND.( ( ln_trainc ).OR.( ln_dyninc ).OR.( ln_sshinc ).OR.( ln_seaiceinc ).OR. &
342	& ( ln_logchltotinc ).OR.( ln_logchlpftinc ) )) &
343	& CALL ctl_stop( ' One or more of ln_trainc, ln_dyninc, ln_sshinc, ln_seaiceinc,', &
344	& ' ln_logchltotinc, and ln_logchlpftinc is set to .true.', &
345	& ' but ln_asmdin and ln_asmiau are both set to .false. :', &
346	& ' Inconsistent options')
347
348	IF ( ( niaufn /= 0 ).AND.( niaufn /= 1 ) ) &
349	& CALL ctl_stop( ' niaufn /= 0 or niaufn /=1 :', &
350	& ' Type IAU weighting function is invalid')
351
352	IF ( ( .NOT. ln_trainc ).AND.( .NOT. ln_dyninc ).AND.( .NOT. ln_sshinc ).AND.( .NOT. ln_seaiceinc ) &
353	& .AND.( .NOT. ln_logchltotinc ).AND.( .NOT. ln_logchlpftinc ) ) &
354	& CALL ctl_warn( ' ln_trainc, ln_dyninc, ln_sshinc, ln_seaiceinc,', &
355	& ' ln_logchltotinc, and ln_logchlpftinc are set to .false. :', &
356	& ' The assimilation increments are not applied')
357
358	IF ( ( ln_asmiau ).AND.( nitiaustr == nitiaufin ) ) &
359	& CALL ctl_stop( ' nitiaustr = nitiaufin :', &
360	& ' IAU interval is of zero length')
361
362	IF ( ( ln_asmiau ).AND.( ( nitiaustr_r < nit000 ).OR.( nitiaufin_r > nitend ) ) ) &
363	& CALL ctl_stop( ' nitiaustr or nitiaufin :', &
364	& ' IAU starting or final time step is outside the cycle interval', &
365	& ' Valid range nit000 to nitend')
366
367	IF ( ( nitbkg_r < nit000 - 1 ).OR.( nitbkg_r > nitend ) ) &
368	& CALL ctl_stop( ' nitbkg :', &
369	& ' Background time step is outside the cycle interval')
370
371	IF ( ( nitdin_r < nit000 - 1 ).OR.( nitdin_r > nitend ) ) &
372	& CALL ctl_stop( ' nitdin :', &
373	& ' Background time step for Direct Initialization is outside', &
374	& ' the cycle interval')
375
376	IF ( nitavgbkg_r > nitend ) &
377	& CALL ctl_stop( ' nitavgbkg_r :', &
378	& ' Assim bkg averaging period is outside', &
379	& ' the cycle interval')
380
381	IF ( ( ln_logchltotinc ).AND.( ln_logchlpftinc ) ) THEN
382	CALL ctl_stop( ' ln_logchltotinc and ln_logchlpftinc both set:', &
383	& ' These options are not compatible')
384	ENDIF
385
386	IF ( ( ln_balwri ).AND.( .NOT. ( ( ln_logchltotinc ).OR.( ln_logchlpftinc ) ) ) ) THEN
387	CALL ctl_warn( ' Balancing increments are only calculated for logchl', &
388	& ' Not assimilating logchl, so ln_balwri will be set to .false.')
389	ln_balwri = .FALSE.
390	ENDIF
391
392	IF ( nstop > 0 ) RETURN ! if there are any errors then go no further
393
394	!--------------------------------------------------------------------
395	! Initialize the Incremental Analysis Updating weighting function
396	!--------------------------------------------------------------------
397
398	IF ( ln_asmiau ) THEN
399
400	ALLOCATE( wgtiau( icycper ) )
401
402	wgtiau(:) = 0.0
403
404	IF ( niaufn == 0 ) THEN
405
406	!---------------------------------------------------------
407	! Constant IAU forcing
408	!---------------------------------------------------------
409
410	DO jt = 1, iiauper
411	wgtiau(jt+nitiaustr-1) = 1.0 / REAL( iiauper )
412	END DO
413
414	ELSEIF ( niaufn == 1 ) THEN
415
416	!---------------------------------------------------------
417	! Linear hat-like, centred in middle of IAU interval
418	!---------------------------------------------------------
419
420	! Compute the normalization factor
421	znorm = 0.0
422	IF ( MOD( iiauper, 2 ) == 0 ) THEN ! Even number of time steps in IAU interval
423	imid = iiauper / 2
424	DO jt = 1, imid
425	znorm = znorm + REAL( jt )
426	END DO
427	znorm = 2.0 * znorm
428	ELSE ! Odd number of time steps in IAU interval
429	imid = ( iiauper + 1 ) / 2
430	DO jt = 1, imid - 1
431	znorm = znorm + REAL( jt )
432	END DO
433	znorm = 2.0 * znorm + REAL( imid )
434	ENDIF
435	znorm = 1.0 / znorm
436
437	DO jt = 1, imid - 1
438	wgtiau(jt+nitiaustr-1) = REAL( jt ) * znorm
439	END DO
440	DO jt = imid, iiauper
441	wgtiau(jt+nitiaustr-1) = REAL( iiauper - jt + 1 ) * znorm
442	END DO
443
444	ENDIF
445
446	! Test that the integral of the weights over the weighting interval equals 1
447	IF(lwp) THEN
448	WRITE(numout,*)
449	WRITE(numout,*) 'asm_inc_init : IAU weights'
450	WRITE(numout,*) '~~~~~~~~~~~~'
451	WRITE(numout,*) ' time step IAU weight'
452	WRITE(numout,*) ' ========= ====================='
453	ztotwgt = 0.0
454	DO jt = 1, icycper
455	ztotwgt = ztotwgt + wgtiau(jt)
456	WRITE(numout,*) ' ', jt, ' ', wgtiau(jt)
457	END DO
458	WRITE(numout,*) ' ==================================='
459	WRITE(numout,*) ' Time-integrated weight = ', ztotwgt
460	WRITE(numout,*) ' ==================================='
461	ENDIF
462
463	ENDIF
464
465	!--------------------------------------------------------------------
466	! Allocate and initialize the increment arrays
467	!--------------------------------------------------------------------
468
469	IF ( ln_trainc ) THEN
470	ALLOCATE( t_bkginc(jpi,jpj,jpk) )
471	ALLOCATE( s_bkginc(jpi,jpj,jpk) )
472	t_bkginc(:,:,:) = 0.0
473	s_bkginc(:,:,:) = 0.0
474	ENDIF
475	IF ( ln_dyninc ) THEN
476	ALLOCATE( u_bkginc(jpi,jpj,jpk) )
477	ALLOCATE( v_bkginc(jpi,jpj,jpk) )
478	u_bkginc(:,:,:) = 0.0
479	v_bkginc(:,:,:) = 0.0
480	ENDIF
481	IF ( ln_sshinc ) THEN
482	ALLOCATE( ssh_bkginc(jpi,jpj) )
483	ssh_bkginc(:,:) = 0.0
484	ENDIF
485	IF ( ln_seaiceinc ) THEN
486	ALLOCATE( seaice_bkginc(jpi,jpj))
487	seaice_bkginc(:,:) = 0.0
488	ENDIF
489	#if defined key_asminc
490	ALLOCATE( ssh_iau(jpi,jpj) )
491	ssh_iau(:,:) = 0.0
492	#endif
493	IF ( ( ln_logchltotinc ).OR.( ln_logchlpftinc ) ) THEN
494	ALLOCATE( logchl_bkginc(jpi,jpj,nn_asmpfts))
495	logchl_bkginc(:,:,:) = 0.0
496	#if defined key_top
497	ALLOCATE( logchl_balinc(jpi,jpj,jpk,jptra) )
498	logchl_balinc(:,:,:,:) = 0.0
499	#endif
500	ENDIF
501	IF ( ( ln_trainc ).OR.( ln_dyninc ).OR.( ln_sshinc ).OR.( ln_seaiceinc ) &
502	& .OR.( ln_logchltotinc ).OR.( ln_logchlpftinc ) ) THEN
503
504	!--------------------------------------------------------------------
505	! Read the increments from file
506	!--------------------------------------------------------------------
507
508	CALL iom_open( c_asminc, inum )
509
510	CALL iom_get( inum, 'time', zdate_inc )
511
512	CALL iom_get( inum, 'z_inc_dateb', z_inc_dateb )
513	CALL iom_get( inum, 'z_inc_datef', z_inc_datef )
514	z_inc_dateb = zdate_inc
515	z_inc_datef = zdate_inc
516
517	IF(lwp) THEN
518	WRITE(numout,*)
519	WRITE(numout,*) 'asm_inc_init : Assimilation increments valid ', &
520	& ' between dates ', NINT( z_inc_dateb ),' and ', &
521	& NINT( z_inc_datef )
522	WRITE(numout,*) '~~~~~~~~~~~~'
523	ENDIF
524
525	IF ( ( NINT( z_inc_dateb ) < ndastp ) &
526	& .OR.( NINT( z_inc_datef ) > iitend_date ) ) &
527	& CALL ctl_warn( ' Validity time of assimilation increments is ', &
528	& ' outside the assimilation interval' )
529
530	IF ( ( ln_asmdin ).AND.( NINT( zdate_inc ) /= iitdin_date ) ) &
531	& CALL ctl_warn( ' Validity time of assimilation increments does ', &
532	& ' not agree with Direct Initialization time' )
533
534	IF ( ln_trainc ) THEN
535
536	!Test if the increments file contains the surft variable.
537	isurfstat = iom_varid( inum, 'bckinsurft', ldstop = .FALSE. )
538	IF ( isurfstat == -1 ) THEN
539	lk_surft = .FALSE.
540	ELSE
541	lk_surft = .TRUE.
542	CALL ctl_warn( ' Applying 2D temperature increment to bottom of ML: ', &
543	& ' bckinsurft found in increments file.' )
544	ENDIF
545
546	IF (lk_surft) THEN
547
548	ALLOCATE(z_mld(jpi,jpj))
549	SELECT CASE(mld_choice)
550	CASE(1)
551	z_mld = hmld
552	CASE(2)
553	z_mld = hmlp
554	CASE(3)
555	#if defined key_karaml
556	IF ( ln_kara ) THEN
557	z_mld = hmld_kara
558	ELSE
559	CALL ctl_stop("Kara mixed layer not calculated as ln_kara=.false.")
560	ENDIF
561	#else
562	CALL ctl_stop("Kara mixed layer not defined in current version of NEMO") ! JW: Safety feature, should be removed
563	! once the Kara mixed layer is available
564	#endif
565	CASE(4)
566	z_mld = hmld_tref
567	END SELECT
568
569	ALLOCATE( t_bkginc_2d(jpi,jpj) )
570	CALL iom_get( inum, jpdom_autoglo, 'bckinsurft', t_bkginc_2d, 1)
571	#if defined key_bdy
572	DO jk = 1,jpkm1
573	WHERE( z_mld(:,:) > fsdepw(:,:,jk) )
574	t_bkginc(:,:,jk) = t_bkginc_2d(:,:) * 0.5 * &
575	& ( 1 + cos( (fsdept(:,:,jk)/z_mld(:,:) ) * rpi ) )
576
577	t_bkginc(:,:,jk) = t_bkginc(:,:,jk) * bdytmask(:,:)
578	ELSEWHERE
579	t_bkginc(:,:,jk) = 0.
580	ENDWHERE
581	ENDDO
582	#else
583	t_bkginc(:,:,:) = 0.
584	#endif
585	s_bkginc(:,:,:) = 0.
586
587	DEALLOCATE(z_mld, t_bkginc_2d)
588
589	ELSE
590
591	CALL iom_get( inum, jpdom_autoglo, 'bckint', t_bkginc, 1 )
592	CALL iom_get( inum, jpdom_autoglo, 'bckins', s_bkginc, 1 )
593	! Apply the masks
594	t_bkginc(:,:,:) = t_bkginc(:,:,:) * tmask(:,:,:)
595	s_bkginc(:,:,:) = s_bkginc(:,:,:) * tmask(:,:,:)
596	! Set missing increments to 0.0 rather than 1e+20
597	! to allow for differences in masks
598	WHERE( ABS( t_bkginc(:,:,:) ) > 1.0e+10 ) t_bkginc(:,:,:) = 0.0
599	WHERE( ABS( s_bkginc(:,:,:) ) > 1.0e+10 ) s_bkginc(:,:,:) = 0.0
600
601	ENDIF
602
603	ENDIF
604
605	IF ( ln_dyninc ) THEN
606	CALL iom_get( inum, jpdom_autoglo, 'bckinu', u_bkginc, 1 )
607	CALL iom_get( inum, jpdom_autoglo, 'bckinv', v_bkginc, 1 )
608	! Apply the masks
609	u_bkginc(:,:,:) = u_bkginc(:,:,:) * umask(:,:,:)
610	v_bkginc(:,:,:) = v_bkginc(:,:,:) * vmask(:,:,:)
611	! Set missing increments to 0.0 rather than 1e+20
612	! to allow for differences in masks
613	WHERE( ABS( u_bkginc(:,:,:) ) > 1.0e+10 ) u_bkginc(:,:,:) = 0.0
614	WHERE( ABS( v_bkginc(:,:,:) ) > 1.0e+10 ) v_bkginc(:,:,:) = 0.0
615	ENDIF
616
617	IF ( ln_sshinc ) THEN
618	CALL iom_get( inum, jpdom_autoglo, 'bckineta', ssh_bkginc, 1 )
619	! Apply the masks
620	ssh_bkginc(:,:) = ssh_bkginc(:,:) * tmask(:,:,1)
621	! Set missing increments to 0.0 rather than 1e+20
622	! to allow for differences in masks
623	WHERE( ABS( ssh_bkginc(:,:) ) > 1.0e+10 ) ssh_bkginc(:,:) = 0.0
624	ENDIF
625
626	IF ( ln_seaiceinc ) THEN
627	CALL iom_get( inum, jpdom_autoglo, 'bckinseaice', seaice_bkginc, 1 )
628	! Apply the masks
629	seaice_bkginc(:,:) = seaice_bkginc(:,:) * tmask(:,:,1)
630	! Set missing increments to 0.0 rather than 1e+20
631	! to allow for differences in masks
632	WHERE( ABS( seaice_bkginc(:,:) ) > 1.0e+10 ) seaice_bkginc(:,:) = 0.0
633	ENDIF
634
635	IF ( ln_logchltotinc ) THEN
636	CALL iom_get( inum, jpdom_autoglo, 'bckinlogchl', logchl_bkginc(:,:,1), 1 )
637	! Apply the masks
638	logchl_bkginc(:,:,1) = logchl_bkginc(:,:,1) * tmask(:,:,1)
639	! Set missing increments to 0.0 rather than 1e+20
640	! to allow for differences in masks
641	WHERE( ABS( logchl_bkginc(:,:,1) ) > 1.0e+10 ) logchl_bkginc(:,:,1) = 0.0
642	ENDIF
643
644	IF ( ln_logchlpftinc ) THEN
645	DO jt = 1, nn_asmpfts
646	WRITE(cl_pftstr,'(I2.2)') jt
647	CALL iom_get( inum, jpdom_autoglo, 'bckinlogchl'//cl_pftstr, logchl_bkginc(:,:,jt), 1 )
648	! Apply the masks
649	logchl_bkginc(:,:,jt) = logchl_bkginc(:,:,jt) * tmask(:,:,1)
650	! Set missing increments to 0.0 rather than 1e+20
651	! to allow for differences in masks
652	WHERE( ABS( logchl_bkginc(:,:,jt) ) > 1.0e+10 ) logchl_bkginc(:,:,jt) = 0.0
653	END DO
654	ENDIF
655
656	CALL iom_close( inum )
657
658	ENDIF
659
660	!-----------------------------------------------------------------------
661	! Apply divergence damping filter
662	!-----------------------------------------------------------------------
663
664	IF ( ln_dyninc .AND. nn_divdmp > 0 ) THEN
665
666	CALL wrk_alloc(jpi,jpj,hdiv)
667
668	DO jt = 1, nn_divdmp
669
670	DO jk = 1, jpkm1
671
672	hdiv(:,:) = 0._wp
673
674	DO jj = 2, jpjm1
675	DO ji = fs_2, fs_jpim1 ! vector opt.
676	hdiv(ji,jj) = &
677	( e2u(ji ,jj ) * fse3u(ji ,jj ,jk) * u_bkginc(ji ,jj ,jk) &
678	- e2u(ji-1,jj ) * fse3u(ji-1,jj ,jk) * u_bkginc(ji-1,jj ,jk) &
679	+ e1v(ji ,jj ) * fse3v(ji ,jj ,jk) * v_bkginc(ji ,jj ,jk) &
680	- e1v(ji ,jj-1) * fse3v(ji ,jj-1,jk) * v_bkginc(ji ,jj-1,jk) ) &
681	/ ( e1t(ji,jj) * e2t(ji,jj) * fse3t(ji,jj,jk) )
682	END DO
683	END DO
684
685	CALL lbc_lnk( hdiv, 'T', 1. ) ! lateral boundary cond. (no sign change)
686
687	DO jj = 2, jpjm1
688	DO ji = fs_2, fs_jpim1 ! vector opt.
689	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) &
690	- e1t(ji ,jj)e2t(ji ,jj) hdiv(ji ,jj) ) &
691	/ e1u(ji,jj) * umask(ji,jj,jk)
692	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) &
693	- e1t(ji,jj )e2t(ji,jj ) hdiv(ji,jj ) ) &
694	/ e2v(ji,jj) * vmask(ji,jj,jk)
695	END DO
696	END DO
697
698	END DO
699
700	END DO
701
702	CALL wrk_dealloc(jpi,jpj,hdiv)
703
704	ENDIF
705
706
707
708	!-----------------------------------------------------------------------
709	! Allocate and initialize the background state arrays
710	!-----------------------------------------------------------------------
711
712	IF ( ln_asmdin ) THEN
713
714	ALLOCATE( t_bkg(jpi,jpj,jpk) )
715	ALLOCATE( s_bkg(jpi,jpj,jpk) )
716	ALLOCATE( u_bkg(jpi,jpj,jpk) )
717	ALLOCATE( v_bkg(jpi,jpj,jpk) )
718	ALLOCATE( ssh_bkg(jpi,jpj) )
719
720	t_bkg(:,:,:) = 0.0
721	s_bkg(:,:,:) = 0.0
722	u_bkg(:,:,:) = 0.0
723	v_bkg(:,:,:) = 0.0
724	ssh_bkg(:,:) = 0.0
725
726	!--------------------------------------------------------------------
727	! Read from file the background state at analysis time
728	!--------------------------------------------------------------------
729
730	CALL iom_open( c_asmdin, inum )
731
732	CALL iom_get( inum, 'rdastp', zdate_bkg )
733
734	IF(lwp) THEN
735	WRITE(numout,*)
736	WRITE(numout,*) 'asm_inc_init : Assimilation background state valid at : ', &
737	& NINT( zdate_bkg )
738	WRITE(numout,*) '~~~~~~~~~~~~'
739	ENDIF
740
741	IF ( NINT( zdate_bkg ) /= iitdin_date ) &
742	& CALL ctl_warn( ' Validity time of assimilation background state does', &
743	& ' not agree with Direct Initialization time' )
744
745	IF ( ln_trainc ) THEN
746	CALL iom_get( inum, jpdom_autoglo, 'tn', t_bkg )
747	CALL iom_get( inum, jpdom_autoglo, 'sn', s_bkg )
748	t_bkg(:,:,:) = t_bkg(:,:,:) * tmask(:,:,:)
749	s_bkg(:,:,:) = s_bkg(:,:,:) * tmask(:,:,:)
750	ENDIF
751
752	IF ( ln_dyninc ) THEN
753	CALL iom_get( inum, jpdom_autoglo, 'un', u_bkg )
754	CALL iom_get( inum, jpdom_autoglo, 'vn', v_bkg )
755	u_bkg(:,:,:) = u_bkg(:,:,:) * umask(:,:,:)
756	v_bkg(:,:,:) = v_bkg(:,:,:) * vmask(:,:,:)
757	ENDIF
758
759	IF ( ln_sshinc ) THEN
760	CALL iom_get( inum, jpdom_autoglo, 'sshn', ssh_bkg )
761	ssh_bkg(:,:) = ssh_bkg(:,:) * tmask(:,:,1)
762	ENDIF
763
764	CALL iom_close( inum )
765
766	ENDIF
767	!
768	END SUBROUTINE asm_inc_init
769
770
771	SUBROUTINE calc_date( kit000, kt, kdate0, kdate )
772	!!----------------------------------------------------------------------
773	!! * ROUTINE calc_date *
774	!!
775	!! ** Purpose : Compute the calendar date YYYYMMDD at a given time step.
776	!!
777	!! ** Method : Compute the calendar date YYYYMMDD at a given time step.
778	!!
779	!! ** Action :
780	!!----------------------------------------------------------------------
781	INTEGER, INTENT(IN) :: kit000 ! Initial time step
782	INTEGER, INTENT(IN) :: kt ! Current time step referenced to kit000
783	INTEGER, INTENT(IN) :: kdate0 ! Initial date
784	INTEGER, INTENT(OUT) :: kdate ! Current date reference to kdate0
785	!
786	INTEGER :: iyea0 ! Initial year
787	INTEGER :: imon0 ! Initial month
788	INTEGER :: iday0 ! Initial day
789	INTEGER :: iyea ! Current year
790	INTEGER :: imon ! Current month
791	INTEGER :: iday ! Current day
792	INTEGER :: idaystp ! Number of days between initial and current date
793	INTEGER :: idaycnt ! Day counter
794
795	INTEGER, DIMENSION(12) :: imonth_len !: length in days of the months of the current year
796
797	!-----------------------------------------------------------------------
798	! Compute the calendar date YYYYMMDD
799	!-----------------------------------------------------------------------
800
801	! Initial date
802	iyea0 = kdate0 / 10000
803	imon0 = ( kdate0 - ( iyea0 * 10000 ) ) / 100
804	iday0 = kdate0 - ( iyea0 * 10000 ) - ( imon0 * 100 )
805
806	! Check that kt >= kit000 - 1
807	IF ( kt < kit000 - 1 ) CALL ctl_stop( ' kt must be >= kit000 - 1')
808
809	! If kt = kit000 - 1 then set the date to the restart date
810	IF ( kt == kit000 - 1 ) THEN
811
812	kdate = ndastp
813	RETURN
814
815	ENDIF
816
817	! Compute the number of days from the initial date
818	idaystp = INT( REAL( kt - kit000 ) * rdt / 86400. )
819
820	iday = iday0
821	imon = imon0
822	iyea = iyea0
823	idaycnt = 0
824
825	CALL calc_month_len( iyea, imonth_len )
826
827	DO WHILE ( idaycnt < idaystp )
828	iday = iday + 1
829	IF ( iday > imonth_len(imon) ) THEN
830	iday = 1
831	imon = imon + 1
832	ENDIF
833	IF ( imon > 12 ) THEN
834	imon = 1
835	iyea = iyea + 1
836	CALL calc_month_len( iyea, imonth_len ) ! update month lengths
837	ENDIF
838	idaycnt = idaycnt + 1
839	END DO
840	!
841	kdate = iyea * 10000 + imon * 100 + iday
842	!
843	END SUBROUTINE
844
845
846	SUBROUTINE calc_month_len( iyear, imonth_len )
847	!!----------------------------------------------------------------------
848	!! * ROUTINE calc_month_len *
849	!!
850	!! ** Purpose : Compute the number of days in a months given a year.
851	!!
852	!! ** Method :
853	!!----------------------------------------------------------------------
854	INTEGER, DIMENSION(12) :: imonth_len !: length in days of the months of the current year
855	INTEGER :: iyear !: year
856	!!----------------------------------------------------------------------
857	!
858	! length of the month of the current year (from nleapy, read in namelist)
859	IF ( nleapy < 2 ) THEN
860	imonth_len(:) = (/ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 /)
861	IF ( nleapy == 1 ) THEN ! we are using calendar with leap years
862	IF ( MOD(iyear, 4) == 0 .AND. ( MOD(iyear, 400) == 0 .OR. MOD(iyear, 100) /= 0 ) ) THEN
863	imonth_len(2) = 29
864	ENDIF
865	ENDIF
866	ELSE
867	imonth_len(:) = nleapy ! all months with nleapy days per year
868	ENDIF
869	!
870	END SUBROUTINE
871
872
873	SUBROUTINE tra_asm_inc( kt )
874	!!----------------------------------------------------------------------
875	!! * ROUTINE tra_asm_inc *
876	!!
877	!! ** Purpose : Apply the tracer (T and S) assimilation increments
878	!!
879	!! ** Method : Direct initialization or Incremental Analysis Updating
880	!!
881	!! ** Action :
882	!!----------------------------------------------------------------------
883	INTEGER, INTENT(IN) :: kt ! Current time step
884	!
885	INTEGER :: ji,jj,jk
886	INTEGER :: it
887	REAL(wp) :: zincwgt ! IAU weight for current time step
888	REAL (wp), DIMENSION(jpi,jpj,jpk) :: fzptnz ! 3d freezing point values
889	!!----------------------------------------------------------------------
890
891	! freezing point calculation taken from oc_fz_pt (but calculated for all depths)
892	! used to prevent the applied increments taking the temperature below the local freezing point
893
894	DO jk = 1, jpkm1
895	fzptnz(:,:,jk) = eos_fzp( tsn(:,:,jk,jp_sal), fsdept(:,:,jk) )
896	END DO
897
898	IF ( ln_asmiau ) THEN
899
900	!--------------------------------------------------------------------
901	! Incremental Analysis Updating
902	!--------------------------------------------------------------------
903
904	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
905
906	it = kt - nit000 + 1
907	zincwgt = wgtiau(it) / rdt ! IAU weight for the current time step
908
909	IF(lwp) THEN
910	WRITE(numout,*)
911	WRITE(numout,*) 'tra_asm_inc : Tracer IAU at time step = ', kt,' with IAU weight = ', wgtiau(it)
912	WRITE(numout,*) '~~~~~~~~~~~~'
913	ENDIF
914
915	! Update the tracer tendencies
916	DO jk = 1, jpkm1
917	IF (ln_temnofreeze) THEN
918	! Do not apply negative increments if the temperature will fall below freezing
919	WHERE(t_bkginc(:,:,jk) > 0.0_wp .OR. &
920	& tsn(:,:,jk,jp_tem) + tsa(:,:,jk,jp_tem) + t_bkginc(:,:,jk) * wgtiau(it) > fzptnz(:,:,jk) )
921	tsa(:,:,jk,jp_tem) = tsa(:,:,jk,jp_tem) + t_bkginc(:,:,jk) * zincwgt
922	END WHERE
923	ELSE
924	tsa(:,:,jk,jp_tem) = tsa(:,:,jk,jp_tem) + t_bkginc(:,:,jk) * zincwgt
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(:,:,jk) > 0.0_wp .OR. &
930	& tsn(:,:,jk,jp_sal) + tsa(:,:,jk,jp_sal) + s_bkginc(:,:,jk) * wgtiau(it) > salfixmin )
931	tsa(:,:,jk,jp_sal) = tsa(:,:,jk,jp_sal) + s_bkginc(:,:,jk) * zincwgt
932	END WHERE
933	ELSE
934	tsa(:,:,jk,jp_sal) = tsa(:,:,jk,jp_sal) + s_bkginc(:,:,jk) * zincwgt
935	ENDIF
936	END DO
937
938	ENDIF
939
940	IF ( kt == nitiaufin_r + 1 ) THEN ! For bias crcn to work
941	DEALLOCATE( t_bkginc )
942	DEALLOCATE( s_bkginc )
943	ENDIF
944
945
946	ELSEIF ( ln_asmdin ) THEN
947
948	!--------------------------------------------------------------------
949	! Direct Initialization
950	!--------------------------------------------------------------------
951
952	IF ( kt == nitdin_r ) THEN
953
954	neuler = 0 ! Force Euler forward step
955
956	! Initialize the now fields with the background + increment
957	IF (ln_temnofreeze) THEN
958	! Do not apply negative increments if the temperature will fall below freezing
959	WHERE( t_bkginc(:,:,:) > 0.0_wp .OR. tsn(:,:,:,jp_tem) + t_bkginc(:,:,:) > fzptnz(:,:,:) )
960	tsn(:,:,:,jp_tem) = t_bkg(:,:,:) + t_bkginc(:,:,:)
961	END WHERE
962	ELSE
963	tsn(:,:,:,jp_tem) = t_bkg(:,:,:) + t_bkginc(:,:,:)
964	ENDIF
965	IF (ln_salfix) THEN
966	! Do not apply negative increments if the salinity will fall below a specified
967	! minimum value salfixmin
968	WHERE( s_bkginc(:,:,:) > 0.0_wp .OR. tsn(:,:,:,jp_sal) + s_bkginc(:,:,:) > salfixmin )
969	tsn(:,:,:,jp_sal) = s_bkg(:,:,:) + s_bkginc(:,:,:)
970	END WHERE
971	ELSE
972	tsn(:,:,:,jp_sal) = s_bkg(:,:,:) + s_bkginc(:,:,:)
973	ENDIF
974
975	tsb(:,:,:,:) = tsn(:,:,:,:) ! Update before fields
976
977	CALL eos( tsb, rhd, rhop, gdept_0(:,:,:) ) ! Before potential and in situ densities
978	!!gm fabien
979	! CALL eos( tsb, rhd, rhop ) ! Before potential and in situ densities
980	!!gm
981
982
983	IF( ln_zps .AND. .NOT. lk_c1d .AND. .NOT. ln_isfcav) &
984	& CALL zps_hde ( kt, jpts, tsb, gtsu, gtsv, & ! Partial steps: before horizontal gradient
985	& rhd, gru , grv ) ! of t, s, rd at the last ocean level
986	IF( ln_zps .AND. .NOT. lk_c1d .AND. ln_isfcav) &
987	& CALL zps_hde_isf( nit000, jpts, tsb, gtsu, gtsv, & ! Partial steps for top cell (ISF)
988	& rhd, gru , grv , aru , arv , gzu , gzv , ge3ru , ge3rv , &
989	& gtui, gtvi, grui, grvi, arui, arvi, gzui, gzvi, ge3rui, ge3rvi ) ! of t, s, rd at the last ocean level
990
991	#if defined key_zdfkpp
992	CALL eos( tsn, rhd, fsdept_n(:,:,:) ) ! Compute rhd
993	!!gm fabien CALL eos( tsn, rhd ) ! Compute rhd
994	#endif
995
996	DEALLOCATE( t_bkginc )
997	DEALLOCATE( s_bkginc )
998	DEALLOCATE( t_bkg )
999	DEALLOCATE( s_bkg )
1000	ENDIF
1001	!
1002	ENDIF
1003	! Perhaps the following call should be in step
1004	IF ( ln_seaiceinc ) CALL seaice_asm_inc ( kt ) ! apply sea ice concentration increment
1005	!
1006	END SUBROUTINE tra_asm_inc
1007
1008
1009	SUBROUTINE dyn_asm_inc( kt )
1010	!!----------------------------------------------------------------------
1011	!! * ROUTINE dyn_asm_inc *
1012	!!
1013	!! ** Purpose : Apply the dynamics (u and v) assimilation increments.
1014	!!
1015	!! ** Method : Direct initialization or Incremental Analysis Updating.
1016	!!
1017	!! ** Action :
1018	!!----------------------------------------------------------------------
1019	INTEGER, INTENT(IN) :: kt ! Current time step
1020	!
1021	INTEGER :: jk
1022	INTEGER :: it
1023	REAL(wp) :: zincwgt ! IAU weight for current time step
1024	!!----------------------------------------------------------------------
1025
1026	IF ( ln_asmiau ) THEN
1027
1028	!--------------------------------------------------------------------
1029	! Incremental Analysis Updating
1030	!--------------------------------------------------------------------
1031
1032	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
1033
1034	it = kt - nit000 + 1
1035	zincwgt = wgtiau(it) / rdt ! IAU weight for the current time step
1036
1037	IF(lwp) THEN
1038	WRITE(numout,*)
1039	WRITE(numout,*) 'dyn_asm_inc : Dynamics IAU at time step = ', &
1040	& kt,' with IAU weight = ', wgtiau(it)
1041	WRITE(numout,*) '~~~~~~~~~~~~'
1042	ENDIF
1043
1044	! Update the dynamic tendencies
1045	DO jk = 1, jpkm1
1046	ua(:,:,jk) = ua(:,:,jk) + u_bkginc(:,:,jk) * zincwgt
1047	va(:,:,jk) = va(:,:,jk) + v_bkginc(:,:,jk) * zincwgt
1048	END DO
1049
1050	IF ( kt == nitiaufin_r ) THEN
1051	DEALLOCATE( u_bkginc )
1052	DEALLOCATE( v_bkginc )
1053	ENDIF
1054
1055	ENDIF
1056
1057	ELSEIF ( ln_asmdin ) THEN
1058
1059	!--------------------------------------------------------------------
1060	! Direct Initialization
1061	!--------------------------------------------------------------------
1062
1063	IF ( kt == nitdin_r ) THEN
1064
1065	neuler = 0 ! Force Euler forward step
1066
1067	! Initialize the now fields with the background + increment
1068	un(:,:,:) = u_bkg(:,:,:) + u_bkginc(:,:,:)
1069	vn(:,:,:) = v_bkg(:,:,:) + v_bkginc(:,:,:)
1070
1071	ub(:,:,:) = un(:,:,:) ! Update before fields
1072	vb(:,:,:) = vn(:,:,:)
1073
1074	DEALLOCATE( u_bkg )
1075	DEALLOCATE( v_bkg )
1076	DEALLOCATE( u_bkginc )
1077	DEALLOCATE( v_bkginc )
1078	ENDIF
1079	!
1080	ENDIF
1081	!
1082	END SUBROUTINE dyn_asm_inc
1083
1084
1085	SUBROUTINE ssh_asm_inc( kt )
1086	!!----------------------------------------------------------------------
1087	!! * ROUTINE ssh_asm_inc *
1088	!!
1089	!! ** Purpose : Apply the sea surface height assimilation increment.
1090	!!
1091	!! ** Method : Direct initialization or Incremental Analysis Updating.
1092	!!
1093	!! ** Action :
1094	!!----------------------------------------------------------------------
1095	INTEGER, INTENT(IN) :: kt ! Current time step
1096	!
1097	INTEGER :: it
1098	INTEGER :: jk
1099	REAL(wp) :: zincwgt ! IAU weight for current time step
1100	!!----------------------------------------------------------------------
1101
1102	IF ( ln_asmiau ) THEN
1103
1104	!--------------------------------------------------------------------
1105	! Incremental Analysis Updating
1106	!--------------------------------------------------------------------
1107
1108	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
1109
1110	it = kt - nit000 + 1
1111	zincwgt = wgtiau(it) / rdt ! IAU weight for the current time step
1112
1113	IF(lwp) THEN
1114	WRITE(numout,*)
1115	WRITE(numout,*) 'ssh_asm_inc : SSH IAU at time step = ', &
1116	& kt,' with IAU weight = ', wgtiau(it)
1117	WRITE(numout,*) '~~~~~~~~~~~~'
1118	ENDIF
1119
1120	! Save the tendency associated with the IAU weighted SSH increment
1121	! (applied in dynspg.*)
1122	#if defined key_asminc
1123	ssh_iau(:,:) = ssh_bkginc(:,:) * zincwgt
1124	#endif
1125	IF ( kt == nitiaufin_r ) THEN
1126	DEALLOCATE( ssh_bkginc )
1127	ENDIF
1128
1129	ENDIF
1130
1131	ELSEIF ( ln_asmdin ) THEN
1132
1133	!--------------------------------------------------------------------
1134	! Direct Initialization
1135	!--------------------------------------------------------------------
1136
1137	IF ( kt == nitdin_r ) THEN
1138
1139	neuler = 0 ! Force Euler forward step
1140
1141	! Initialize the now fields the background + increment
1142	sshn(:,:) = ssh_bkg(:,:) + ssh_bkginc(:,:)
1143
1144	! Update before fields
1145	sshb(:,:) = sshn(:,:)
1146
1147	IF( lk_vvl ) THEN
1148	DO jk = 1, jpk
1149	fse3t_b(:,:,jk) = fse3t_n(:,:,jk)
1150	END DO
1151	ENDIF
1152
1153	DEALLOCATE( ssh_bkg )
1154	DEALLOCATE( ssh_bkginc )
1155
1156	ENDIF
1157	!
1158	ENDIF
1159	!
1160	END SUBROUTINE ssh_asm_inc
1161
1162
1163	SUBROUTINE seaice_asm_inc( kt, kindic )
1164	!!----------------------------------------------------------------------
1165	!! * ROUTINE seaice_asm_inc *
1166	!!
1167	!! ** Purpose : Apply the sea ice assimilation increment.
1168	!!
1169	!! ** Method : Direct initialization or Incremental Analysis Updating.
1170	!!
1171	!! ** Action :
1172	!!
1173	!!----------------------------------------------------------------------
1174	IMPLICIT NONE
1175	!
1176	INTEGER, INTENT(in) :: kt ! Current time step
1177	INTEGER, INTENT(in), OPTIONAL :: kindic ! flag for disabling the deallocation
1178	!
1179	INTEGER :: it
1180	REAL(wp) :: zincwgt ! IAU weight for current time step
1181	#if defined key_lim2
1182	REAL(wp), DIMENSION(jpi,jpj) :: zofrld, zohicif, zseaicendg, zhicifinc ! LIM
1183	REAL(wp) :: zhicifmin = 0.5_wp ! ice minimum depth in metres
1184	#endif
1185	!!----------------------------------------------------------------------
1186
1187	IF ( ln_asmiau ) THEN
1188
1189	!--------------------------------------------------------------------
1190	! Incremental Analysis Updating
1191	!--------------------------------------------------------------------
1192
1193	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
1194
1195	it = kt - nit000 + 1
1196	zincwgt = wgtiau(it) ! IAU weight for the current time step
1197	! note this is not a tendency so should not be divided by rdt (as with the tracer and other increments)
1198
1199	IF(lwp) THEN
1200	WRITE(numout,*)
1201	WRITE(numout,*) 'seaice_asm_inc : sea ice conc IAU at time step = ', &
1202	& kt,' with IAU weight = ', wgtiau(it)
1203	WRITE(numout,*) '~~~~~~~~~~~~'
1204	ENDIF
1205
1206	! Sea-ice : LIM-3 case (to add)
1207
1208	#if defined key_lim2
1209	! Sea-ice : LIM-2 case
1210	zofrld (:,:) = frld(:,:)
1211	zohicif(:,:) = hicif(:,:)
1212	!
1213	frld = MIN( MAX( frld (:,:) - seaice_bkginc(:,:) * zincwgt, 0.0_wp), 1.0_wp)
1214	pfrld = MIN( MAX( pfrld(:,:) - seaice_bkginc(:,:) * zincwgt, 0.0_wp), 1.0_wp)
1215	fr_i(:,:) = 1.0_wp - frld(:,:) ! adjust ice fraction
1216	!
1217	zseaicendg(:,:) = zofrld(:,:) - frld(:,:) ! find out actual sea ice nudge applied
1218	!
1219	! Nudge sea ice depth to bring it up to a required minimum depth
1220	WHERE( zseaicendg(:,:) > 0.0_wp .AND. hicif(:,:) < zhicifmin )
1221	zhicifinc(:,:) = (zhicifmin - hicif(:,:)) * zincwgt
1222	ELSEWHERE
1223	zhicifinc(:,:) = 0.0_wp
1224	END WHERE
1225	!
1226	! nudge ice depth
1227	hicif (:,:) = hicif (:,:) + zhicifinc(:,:)
1228	phicif(:,:) = phicif(:,:) + zhicifinc(:,:)
1229	!
1230	! seaice salinity balancing (to add)
1231	#endif
1232
1233	#if defined key_cice && defined key_asminc
1234	! Sea-ice : CICE case. Pass ice increment tendency into CICE
1235	ndaice_da(:,:) = seaice_bkginc(:,:) * zincwgt / rdt
1236	#endif
1237
1238	IF ( kt == nitiaufin_r ) THEN
1239	DEALLOCATE( seaice_bkginc )
1240	ENDIF
1241
1242	ELSE
1243
1244	#if defined key_cice && defined key_asminc
1245	! Sea-ice : CICE case. Zero ice increment tendency into CICE
1246	ndaice_da(:,:) = 0.0_wp
1247	#endif
1248
1249	ENDIF
1250
1251	ELSEIF ( ln_asmdin ) THEN
1252
1253	!--------------------------------------------------------------------
1254	! Direct Initialization
1255	!--------------------------------------------------------------------
1256
1257	IF ( kt == nitdin_r ) THEN
1258
1259	neuler = 0 ! Force Euler forward step
1260
1261	! Sea-ice : LIM-3 case (to add)
1262
1263	#if defined key_lim2
1264	! Sea-ice : LIM-2 case.
1265	zofrld(:,:)=frld(:,:)
1266	zohicif(:,:)=hicif(:,:)
1267	!
1268	! Initialize the now fields the background + increment
1269	frld (:,:) = MIN( MAX( frld(:,:) - seaice_bkginc(:,:), 0.0_wp), 1.0_wp)
1270	pfrld(:,:) = frld(:,:)
1271	fr_i (:,:) = 1.0_wp - frld(:,:) ! adjust ice fraction
1272	zseaicendg(:,:) = zofrld(:,:) - frld(:,:) ! find out actual sea ice nudge applied
1273	!
1274	! Nudge sea ice depth to bring it up to a required minimum depth
1275	WHERE( zseaicendg(:,:) > 0.0_wp .AND. hicif(:,:) < zhicifmin )
1276	zhicifinc(:,:) = (zhicifmin - hicif(:,:)) * zincwgt
1277	ELSEWHERE
1278	zhicifinc(:,:) = 0.0_wp
1279	END WHERE
1280	!
1281	! nudge ice depth
1282	hicif (:,:) = hicif (:,:) + zhicifinc(:,:)
1283	phicif(:,:) = phicif(:,:)
1284	!
1285	! seaice salinity balancing (to add)
1286	#endif
1287
1288	#if defined key_cice && defined key_asminc
1289	! Sea-ice : CICE case. Pass ice increment tendency into CICE
1290	ndaice_da(:,:) = seaice_bkginc(:,:) / rdt
1291	#endif
1292	IF ( .NOT. PRESENT(kindic) ) THEN
1293	DEALLOCATE( seaice_bkginc )
1294	END IF
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	!#if defined defined key_lim2 \|\| defined key_cice
1306	!
1307	! IF (ln_seaicebal ) THEN
1308	! !! balancing salinity increments
1309	! !! simple case from limflx.F90 (doesn't include a mass flux)
1310	! !! assumption is that as ice concentration is reduced or increased
1311	! !! the snow and ice depths remain constant
1312	! !! note that snow is being created where ice concentration is being increased
1313	! !! - could be more sophisticated and
1314	! !! not do this (but would need to alter h_snow)
1315	!
1316	! usave(:,:,:)=sb(:,:,:) ! use array as a temporary store
1317	!
1318	! DO jj = 1, jpj
1319	! DO ji = 1, jpi
1320	! ! calculate change in ice and snow mass per unit area
1321	! ! positive values imply adding salt to the ocean (results from ice formation)
1322	! ! fwf : ice formation and melting
1323	!
1324	! zfons = ( -nfresh_da(ji,jj)soce + nfsalt_da(ji,jj) )rdt
1325	!
1326	! ! change salinity down to mixed layer depth
1327	! mld=hmld_kara(ji,jj)
1328	!
1329	! ! prevent small mld
1330	! ! less than 10m can cause salinity instability
1331	! IF (mld < 10) mld=10
1332	!
1333	! ! set to bottom of a level
1334	! DO jk = jpk-1, 2, -1
1335	! IF ((mld > gdepw(ji,jj,jk)) .and. (mld < gdepw(ji,jj,jk+1))) THEN
1336	! mld=gdepw(ji,jj,jk+1)
1337	! jkmax=jk
1338	! ENDIF
1339	! ENDDO
1340	!
1341	! ! avoid applying salinity balancing in shallow water or on land
1342	! !
1343	!
1344	! ! dsal_ocn (psu kg m^-2) / (kg m^-3 * m)
1345	!
1346	! dsal_ocn=0.0_wp
1347	! sal_thresh=5.0_wp ! minimum salinity threshold for salinity balancing
1348	!
1349	! if (tmask(ji,jj,1) > 0 .AND. tmask(ji,jj,jkmax) > 0 ) &
1350	! dsal_ocn = zfons / (rhop(ji,jj,1) * mld)
1351	!
1352	! ! put increments in for levels in the mixed layer
1353	! ! but prevent salinity below a threshold value
1354	!
1355	! DO jk = 1, jkmax
1356	!
1357	! IF (dsal_ocn > 0.0_wp .or. sb(ji,jj,jk)+dsal_ocn > sal_thresh) THEN
1358	! sb(ji,jj,jk) = sb(ji,jj,jk) + dsal_ocn
1359	! sn(ji,jj,jk) = sn(ji,jj,jk) + dsal_ocn
1360	! ENDIF
1361	!
1362	! ENDDO
1363	!
1364	! ! ! salt exchanges at the ice/ocean interface
1365	! ! zpmess = zfons / rdt_ice ! rdt_ice is ice timestep
1366	! !
1367	! !! Adjust fsalt. A +ve fsalt means adding salt to ocean
1368	! !! fsalt(ji,jj) = fsalt(ji,jj) + zpmess ! adjust fsalt
1369	! !!
1370	! !! emps(ji,jj) = emps(ji,jj) + zpmess ! or adjust emps (see icestp1d)
1371	! !! ! E-P (kg m-2 s-2)
1372	! ! emp(ji,jj) = emp(ji,jj) + zpmess ! E-P (kg m-2 s-2)
1373	! ENDDO !ji
1374	! ENDDO !jj!
1375	!
1376	! ENDIF !ln_seaicebal
1377	!
1378	!#endif
1379
1380	ENDIF
1381
1382	END SUBROUTINE seaice_asm_inc
1383
1384	SUBROUTINE logchl_asm_inc( kt )
1385	!!----------------------------------------------------------------------
1386	!! * ROUTINE logchl_asm_inc *
1387	!!
1388	!! ** Purpose : Apply the chlorophyll assimilation increments.
1389	!!
1390	!! ** Method : Calculate increments to state variables using nitrogen
1391	!! balancing.
1392	!! Direct initialization or Incremental Analysis Updating.
1393	!!
1394	!! ** Action :
1395	!!----------------------------------------------------------------------
1396	INTEGER, INTENT(IN) :: kt ! Current time step
1397	!
1398	INTEGER :: jk ! Loop counter
1399	INTEGER :: it ! Index
1400	REAL(wp) :: zincwgt ! IAU weight for current time step
1401	REAL(wp) :: zincper ! IAU interval in seconds
1402	!!----------------------------------------------------------------------
1403
1404	IF ( kt <= nit000 ) THEN
1405
1406	zincper = (nitiaufin_r - nitiaustr_r + 1) * rdt
1407
1408	#if defined key_fabm
1409	CALL asm_logchl_bal_ersem( ln_logchlpftinc, nn_asmpfts, mld_choice_bgc, &
1410	& logchl_bkginc, logchl_balinc )
1411	#elif defined key_medusa && defined key_foam_medusa
1412	!CALL asm_logchl_bal_medusa()
1413	CALL ctl_stop( 'Attempting to assimilate logchl into MEDUSA, ', &
1414	& 'but not fully implemented yet' )
1415	#elif defined key_hadocc
1416	!CALL asm_logchl_bal_hadocc()
1417	CALL ctl_stop( 'Attempting to assimilate logchl into HadOCC, ', &
1418	& 'but not fully implemented yet' )
1419	#else
1420	CALL ctl_stop( 'Attempting to assimilate logchl, ', &
1421	& 'but not defined a biogeochemical model' )
1422	#endif
1423
1424	ENDIF
1425
1426	IF ( ln_asmiau ) THEN
1427
1428	!--------------------------------------------------------------------
1429	! Incremental Analysis Updating
1430	!--------------------------------------------------------------------
1431
1432	IF ( ( kt >= nitiaustr_r ).AND.( kt <= nitiaufin_r ) ) THEN
1433
1434	it = kt - nit000 + 1
1435	zincwgt = wgtiau(it) ! IAU weight for the current time step
1436	! note this is not a tendency so should not be divided by rdt
1437
1438	IF(lwp) THEN
1439	WRITE(numout,*)
1440	WRITE(numout,*) 'logchl_asm_inc : logchl IAU at time step = ', &
1441	& kt,' with IAU weight = ', wgtiau(it)
1442	WRITE(numout,*) '~~~~~~~~~~~~'
1443	ENDIF
1444
1445	! Update the biogeochemical variables
1446	! Add directly to trn and trb, rather than to tra, as not a tendency
1447	#if defined key_fabm
1448	DO jk = 1, jpkm1
1449	trn(:,:,jk,jp_fabm0:jp_fabm1) = trn(:,:,jk,jp_fabm0:jp_fabm1) + &
1450	& logchl_balinc(:,:,jk,jp_fabm0:jp_fabm1) * zincwgt
1451	trb(:,:,jk,jp_fabm0:jp_fabm1) = trb(:,:,jk,jp_fabm0:jp_fabm1) + &
1452	& logchl_balinc(:,:,jk,jp_fabm0:jp_fabm1) * zincwgt
1453	END DO
1454	#elif defined key_medusa && defined key_foam_medusa
1455	DO jk = 1, jpkm1
1456	trn(:,:,jk,jp_msa0:jp_msa1) = trn(:,:,jk,jp_msa0:jp_msa1) + &
1457	& logchl_balinc(:,:,jk,jp_msa0:jp_msa1) * zincwgt
1458	trb(:,:,jk,jp_msa0:jp_msa1) = trb(:,:,jk,jp_msa0:jp_msa1) + &
1459	& logchl_balinc(:,:,jk,jp_msa0:jp_msa1) * zincwgt
1460	END DO
1461	#elif defined key_hadocc
1462	DO jk = 1, jpkm1
1463	trn(:,:,jk,jp_had0:jp_had1) = trn(:,:,jk,jp_had0:jp_had1) + &
1464	& logchl_balinc(:,:,jk,jp_had0:jp_had1) * zincwgt
1465	trb(:,:,jk,jp_had0:jp_had1) = trb(:,:,jk,jp_had0:jp_had1) + &
1466	& logchl_balinc(:,:,jk,jp_had0:jp_had1) * zincwgt
1467	END DO
1468	#endif
1469
1470	! Do not deallocate arrays - needed by asm_bal_wri
1471	! which is called at end of model run
1472
1473	ENDIF
1474
1475	ELSEIF ( ln_asmdin ) THEN
1476
1477	!--------------------------------------------------------------------
1478	! Direct Initialization
1479	!--------------------------------------------------------------------
1480
1481	IF ( kt == nitdin_r ) THEN
1482
1483	neuler = 0 ! Force Euler forward step
1484
1485	#if defined key_fabm
1486	! Initialize the now fields with the background + increment
1487	! Background currently is what the model is initialised with
1488	CALL ctl_warn( ' Doing direct initialisation of ERSEM with chlorophyll assimilation', &
1489	& ' Background state is taken from model rather than background file' )
1490	trn(:,:,:,jp_fabm0:jp_fabm1) = trn(:,:,:,jp_fabm0:jp_fabm1) + &
1491	& logchl_balinc(:,:,:,jp_fabm0:jp_fabm1)
1492	trb(:,:,:,jp_fabm0:jp_fabm1) = trn(:,:,:,jp_fabm0:jp_fabm1)
1493	#elif defined key_medusa && defined key_foam_medusa
1494	! Initialize the now fields with the background + increment
1495	! Background currently is what the model is initialised with
1496	CALL ctl_warn( ' Doing direct initialisation of MEDUSA with chlorophyll assimilation', &
1497	& ' Background state is taken from model rather than background file' )
1498	trn(:,:,:,jp_msa0:jp_msa1) = trn(:,:,:,jp_msa0:jp_msa1) + &
1499	& logchl_balinc(:,:,:,jp_msa0:jp_msa1)
1500	trb(:,:,:,jp_msa0:jp_msa1) = trn(:,:,:,jp_msa0:jp_msa1)
1501	#elif defined key_hadocc
1502	! Initialize the now fields with the background + increment
1503	! Background currently is what the model is initialised with
1504	CALL ctl_warn( ' Doing direct initialisation of HadOCC with chlorophyll assimilation', &
1505	& ' Background state is taken from model rather than background file' )
1506	trn(:,:,:,jp_had0:jp_had1) = trn(:,:,:,jp_had0:jp_had1) + &
1507	& logchl_balinc(:,:,:,jp_had0:jp_had1)
1508	trb(:,:,:,jp_had0:jp_had1) = trn(:,:,:,jp_had0:jp_had1)
1509	#endif
1510
1511	! Do not deallocate arrays - needed by asm_bal_wri
1512	! which is called at end of model run
1513	ENDIF
1514	!
1515	ENDIF
1516	!
1517	END SUBROUTINE logchl_asm_inc
1518
1519	!!======================================================================
1520	END MODULE asminc

Note: See TracBrowser for help on using the repository browser.

Download in other formats: