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sms_medusa.F90 in branches/NERC/dev_r5518_NOC_MEDUSA_Stable/NEMOGCM/NEMO/TOP_SRC/MEDUSA – NEMO

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source: branches/NERC/dev_r5518_NOC_MEDUSA_Stable/NEMOGCM/NEMO/TOP_SRC/MEDUSA/sms_medusa.F90 @ 7894

Last change on this file since 7894 was 7894, checked in by jpalmier, 7 years ago
JPALM -- 11-04-2017 -- MEDUSA spring tidy-up refreshning session
File size: 23.6 KB

Line
1	MODULE sms_medusa
2	!!----------------------------------------------------------------------
3	!! * sms_medusa.F90 *
4	!! TOP : MEDUSA Source Minus Sink variables
5	!!----------------------------------------------------------------------
6	!! History : - ! 1999-09 (M. Levy) original code
7	!! - ! 2000-12 (O. Aumont, E. Kestenare) add sediment
8	!! 1.0 ! 2005-10 (C. Ethe) F90
9	!! 1.0 ! 2005-03 (A-S Kremeur) add fphylab, fzoolab, fdetlab, fdbod
10	!! - ! 2005-06 (A-S Kremeur) add sedpocb, sedpocn, sedpoca
11	!! 2.0 ! 2007-04 (C. Deltel, G. Madec) Free form and modules
12	!! - ! 2008-08 (K. Popova) adaptation for MEDUSA
13	!! - ! 2008-11 (A. Yool) continuing adaptation for MEDUSA
14	!! - ! 2010-03 (A. Yool) updated for branch inclusion
15	!! - ! 2011-04 (A. Yool) updated for ROAM project
16	!!----------------------------------------------------------------------
17
18	#if defined key_medusa
19	!!----------------------------------------------------------------------
20	!! 'key_medusa' MEDUSA model
21	!!----------------------------------------------------------------------
22	USE par_oce
23	USE par_trc
24
25	IMPLICIT NONE
26	PUBLIC
27
28	!!----------------------------------------------------------------------
29	!! NEMO/TOP 1.0 , LOCEAN-IPSL (2005)
30	!! $Id$
31	!! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt)
32	!!----------------------------------------------------------------------
33
34	INTEGER :: numnatp_ref = -1 !! Logical units for namelist medusa
35	INTEGER :: numnatp_cfg = -1 !! Logical units for namelist medusa
36	INTEGER :: numonp = -1 !! Logical unit for namelist medusa output
37
38	!!----------------------------------------------------------------------
39	!! Biological parameters
40	!!----------------------------------------------------------------------
41	!!
42	!! Primary production and chl related quantities
43	REAL(wp) :: xxi !: conversion factor from gC to mmolN
44	REAL(wp) :: xaln !: Chl-a specific initial slope of P-I curve for non-diatoms
45	REAL(wp) :: xald !: Chl-a specific initial slope of P-I curve for diatoms
46	INTEGER :: jphy !: phytoplankton T-dependent growth switch
47	REAL(wp) :: xvpn !: maximum growth rate for non-diatoms
48	REAL(wp) :: xvpd !: maximum growth rate for diatoms
49	REAL(wp) :: xthetam !: maximum Chl to C ratio for non-diatoms
50	REAL(wp) :: xthetamd !: maximum Chl to C ratio for diatoms
51	REAL(wp) :: xq10 !: specific Q10 value (jphy==2)
52	!!
53	!! Diatom silicon parameters
54	REAL(wp) :: xsin0 !: minimum diatom Si:N ratio
55	REAL(wp) :: xnsi0 !: minimum diatom N:Si ratio
56	REAL(wp) :: xuif !: hypothetical growth ratio at infinite Si:N ratio
57	!!
58	!! Nutrient limitation
59	INTEGER :: jliebig !: Liebig nutrient uptake switch
60	REAL(wp) :: xnln !: half-sat constant for DIN uptake by non-diatoms
61	REAL(wp) :: xnld !: half-sat constant for DIN uptake by diatoms
62	REAL(wp) :: xsld !: half-sat constant for Si uptake by diatoms
63	REAL(wp) :: xfln !: half-sat constant for Fe uptake by non-diatoms
64	REAL(wp) :: xfld !: half-sat constant for Fe uptake by diatoms
65	!!
66	!! Grazing
67	REAL(wp) :: xgmi !: microzoo maximum growth rate
68	REAL(wp) :: xgme !: mesozoo maximum growth rate
69	REAL(wp) :: xkmi !: microzoo grazing half-sat parameter
70	REAL(wp) :: xkme !: mesozoo grazing half-sat parameter
71	REAL(wp) :: xphi !: micro/mesozoo grazing inefficiency
72	REAL(wp) :: xbetan !: micro/mesozoo N assimilation efficiency
73	REAL(wp) :: xbetac !: micro/mesozoo C assimilation efficiency
74	REAL(wp) :: xkc !: micro/mesozoo net C growth efficiency
75	REAL(wp) :: xpmipn !: grazing preference of microzoo for non-diatoms
76	REAL(wp) :: xpmid !: grazing preference of microzoo for diatoms
77	REAL(wp) :: xpmepn !: grazing preference of mesozoo for non-diatoms
78	REAL(wp) :: xpmepd !: grazing preference of mesozoo for diatoms
79	REAL(wp) :: xpmezmi !: grazing preference of mesozoo for microzoo
80	REAL(wp) :: xpmed !: grazing preference of mesozoo for detritus
81	!!
82	!! Metabolic losses
83	REAL(wp) :: xmetapn !: non-diatom metabolic loss rate
84	REAL(wp) :: xmetapd !: diatom metabolic loss rate
85	REAL(wp) :: xmetazmi !: microzoo metabolic loss rate
86	REAL(wp) :: xmetazme !: mesozoo metabolic loss rate
87	!!
88	!! Mortality losses
89	INTEGER :: jmpn !: non-diatom mortality functional form
90	REAL(wp) :: xmpn !: non-diatom mortality rate
91	REAL(wp) :: xkphn !: non-diatom mortality half-sat constant
92	INTEGER :: jmpd !: diatom mortality functional form
93	REAL(wp) :: xmpd !: diatom mortality rate
94	REAL(wp) :: xkphd !: diatom mortality half-sat constant
95	INTEGER :: jmzmi !: microzoo mortality functional form
96	REAL(wp) :: xmzmi !: microzoo mortality rate
97	REAL(wp) :: xkzmi !: microzoo mortality half-sat constant
98	INTEGER :: jmzme !: mesozoo mortality functional form
99	REAL(wp) :: xmzme !: mesozoo mortality rate
100	REAL(wp) :: xkzme !: mesozoo mortality half-sat constant
101	!!
102	!! Remineralisation
103	INTEGER :: jmd !: detritus T-dependent remineralisation switch
104	INTEGER :: jsfd !: accelerate seafloor detritus remin. switch
105	REAL(wp) :: xmd !: detrital nitrogen remineralisation rate
106	REAL(wp) :: xmdc !: detrital carbon remineralisation rate
107	!!
108	!! Stochiometric ratios
109	REAL(wp) :: xthetapn !: non-diatom C:N ratio
110	REAL(wp) :: xthetapd !: diatom C:N ratio
111	REAL(wp) :: xthetazmi !: microzoo C:N ratio
112	REAL(wp) :: xthetazme !: mesozoo C:N ratio
113	REAL(wp) :: xthetad !: detritus C:N ratio
114	REAL(wp) :: xrfn !: phytoplankton Fe:N ratio
115	REAL(wp) :: xrsn !: diatom Si:N ratio (NOT USED HERE; RETAINED FOR LOBSTER)
116	!!
117	!! Iron parameters
118	INTEGER :: jiron !: iron scavenging submodel switch
119	REAL(wp) :: xfe_mass !: iron atomic mass
120	REAL(wp) :: xfe_sol !: aeolian iron solubility
121	REAL(wp) :: xfe_sed !: sediment iron input
122	REAL(wp) :: xLgT !: total ligand concentration (umol/m3)
123	REAL(wp) :: xk_FeL !: dissociation constant for (Fe + L)
124	REAL(wp) :: xk_sc_Fe !: scavenging rate of "free" iron
125	!!
126	!! Gravitational sinking
127	REAL(wp) :: vsed !: detritus gravitational sinking rate
128	REAL(wp) :: xhr !: coefficient for Martin et al. (1987) remineralisation
129	!!
130	!! Fast-sinking detritus parameters
131	INTEGER :: jexport !: fast detritus remineralisation switch
132	INTEGER :: jfdfate !: fate of fast detritus at seafloor switch
133	INTEGER :: jrratio !: rain ratio switch
134	INTEGER :: jocalccd !: CCD switch
135	REAL(wp) :: xridg_r0 !: Ridgwell rain ratio coefficient
136	REAL(wp) :: xfdfrac1 !: fast-sinking fraction of diatom nat. mort. losses
137	REAL(wp) :: xfdfrac2 !: fast-sinking fraction of mesozooplankton mort. losses
138	REAL(wp) :: xfdfrac3 !: fast-sinking fraction of diatom silicon grazing losses
139	REAL(wp) :: xcaco3a !: polar (high latitude) CaCO3 fraction
140	REAL(wp) :: xcaco3b !: equatorial (low latitude) CaCO3 fraction
141	REAL(wp) :: xmassc !: organic C mass:mole ratio, C106 H175 O40 N16 P1
142	REAL(wp) :: xmassca !: calcium carbonate mass:mole ratio, CaCO3
143	REAL(wp) :: xmasssi !: biogenic silicon mass:mole ratio, (H2SiO3)n
144	REAL(wp) :: xprotca !: calcium carbonate protection ratio
145	REAL(wp) :: xprotsi !: biogenic silicon protection ratio
146	REAL(wp) :: xfastc !: organic C remineralisation length scale
147	REAL(wp) :: xfastca !: calcium carbonate dissolution length scale
148	REAL(wp) :: xfastsi !: biogenic silicon dissolution length scale
149	!!
150	!! Benthos parameters
151	INTEGER :: jorgben !: does organic detritus go to the benthos?
152	INTEGER :: jinorgben !: does inorganic detritus go to the benthos?
153	!!
154	REAL(wp) :: xsedn !: organic nitrogen sediment remineralisation rate
155	REAL(wp) :: xsedfe !: organic iron sediment remineralisation rate
156	REAL(wp) :: xsedsi !: inorganic silicon sediment dissolution rate
157	REAL(wp) :: xsedc !: organic carbon sediment remineralisation rate
158	REAL(wp) :: xsedca !: inorganic carbon sediment dissolution rate
159	REAL(wp) :: xburial !: burial rate of seafloor detritus
160	!!
161	!! River parameters
162	INTEGER :: jriver_n !: riverine nitrogen? 0 = no, 1 = conc, 2 = flux
163	INTEGER :: jriver_si !: riverine silicon? 0 = no, 1 = conc, 2 = flux
164	INTEGER :: jriver_c !: riverine carbon? 0 = no, 1 = conc, 2 = flux
165	INTEGER :: jriver_alk!: riverine alkalinity? 0 = no, 1 = conc, 2 = flux
166	INTEGER :: jriver_dep!: depth river input added to? 1 = surface, >1 possible
167	!!
168	!! Miscellaneous
169	REAL(wp) :: xsdiss !: diatom frustule dissolution rate
170	!!
171	!! Additional parameters
172	INTEGER :: jpkb !: vertical layer for diagnostic of the vertical flux
173	!!
174	!! UKESM diagnostics
175	INTEGER :: jdms !: include DMS diagnostics ? Jpalm (27-08-2014)
176	INTEGER :: jdms_input !: use instant (0) or diel-average (1) inputs (AXY, 08/07/2015)
177	INTEGER :: jdms_model !: choice of DMS model passed to atmosphere
178	!! 1 = ANDR, 2 = SIMO, 3 = ARAN, 4 = HALL
179	!!
180	!!
181	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: remdmp !: depth dependent damping coefficient of passive tracers
182	!!
183	!! AXY (27/07/10): add in indices for depth horizons (for sinking flux
184	!! and seafloor iron inputs)
185	INTEGER :: i0100, i0150, i0200, i0500, i1000, i1100
186	#if defined key_roam
187	!!
188	!! ROAM carbon, alkalinity and oxygen cycle parameters
189	REAL(wp) :: xthetaphy !: oxygen evolution/consumption by phytoplankton
190	REAL(wp) :: xthetazoo !: oxygen consumption by zooplankton
191	REAL(wp) :: xthetanit !: oxygen consumption by nitrogen remineralisation
192	REAL(wp) :: xthetarem !: oxygen consumption by carbon remineralisation
193	REAL(wp) :: xo2min !: oxygen minimum concentration
194	!!
195	!! 3D fields of carbonate system parameters
196	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: f3_pH !: 3D pH
197	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: f3_h2co3 !: 3D carbonic acid
198	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: f3_hco3 !: 3D bicarbonate
199	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: f3_co3 !: 3D carbonate
200	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: f3_omcal !: 3D omega calcite
201	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: f3_omarg !: 3D omega aragonite
202	!!
203	!! 2D fields of calcium carbonate compensation depth
204	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: f2_ccd_cal !: 2D calcite CCD depth
205	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: f2_ccd_arg !: 2D aragonite CCD depth
206	!!
207	!! 2D fields of organic and inorganic material sedimented on the seafloor
208	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_sed_n !: 2D organic nitrogen (before)
209	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_sed_n !: 2D organic nitrogen (now)
210	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_sed_n !: 2D organic nitrogen (after)
211	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_sed_fe !: 2D organic iron (before)
212	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_sed_fe !: 2D organic iron (now)
213	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_sed_fe !: 2D organic iron (after)
214	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_sed_si !: 2D inorganic silicon (before)
215	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_sed_si !: 2D inorganic silicon (now)
216	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_sed_si !: 2D inorganic silicon (after)
217	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_sed_c !: 2D organic carbon (before)
218	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_sed_c !: 2D organic carbon (now)
219	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_sed_c !: 2D organic carbon (after)
220	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_sed_ca !: 2D inorganic carbon (before)
221	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_sed_ca !: 2D inorganic carbon (now)
222	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_sed_ca !: 2D inorganic carbon (after)
223	!!
224	!! 2D fields of temporally averaged properties for DMS calculations (AXY, 07/07/15)
225	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_dms_chn !: 2D avg CHN (before)
226	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_dms_chn !: 2D avg CHN (now)
227	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_dms_chn !: 2D avg CHN (after)
228	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_dms_chd !: 2D avg CHD (before)
229	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_dms_chd !: 2D avg CHD (now)
230	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_dms_chd !: 2D avg CHD (after)
231	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_dms_mld !: 2D avg MLD (before)
232	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_dms_mld !: 2D avg MLD (now)
233	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_dms_mld !: 2D avg MLD (after)
234	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_dms_qsr !: 2D avg QSR (before)
235	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_dms_qsr !: 2D avg QSR (now)
236	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_dms_qsr !: 2D avg QSR (after)
237	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_dms_din !: 2D avg DIN (before)
238	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_dms_din !: 2D avg DIN (now)
239	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_dms_din !: 2D avg DIN (after)
240	!!
241	!! 2D fields needing to be knows at first tstp for coupling with atm - UKESM (Jpalm,14-06-2016)
242	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_co2_flx !: 2D avg fx co2 (before)
243	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_co2_flx !: 2D avg fx co2 (now)
244	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_co2_flx !: 2D avg fx co2 (after)
245	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zb_dms_srf !: 2D avg fx co2 (before)
246	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zn_dms_srf !: 2D avg fx co2 (now)
247	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: za_dms_srf !: 2D avg fx co2 (after)
248
249	#endif
250
251	!!----------------------------------------------------------------------
252	!! CCD parameter
253	!!----------------------------------------------------------------------
254	!!
255	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: ocal_ccd !: CCD depth
256
257	!!----------------------------------------------------------------------
258	!! Dust parameters
259	!!----------------------------------------------------------------------
260	!!
261	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: dust !: dust parameter 1
262	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: zirondep !! Fe deposition
263
264	!!----------------------------------------------------------------------
265	!! River parameters
266	!!----------------------------------------------------------------------
267	!!
268	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: riv_n !: riverine N
269	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: riv_si !: riverine Si
270	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: riv_c !: riverine C
271	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: riv_alk !: riverine alkalinity
272	!! AXY (19/07/12): add this to permit river fluxes to be added below top box
273	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: friver_dep !: where river fluxes added
274
275	!!----------------------------------------------------------------------
276	!! Optical parameters
277	!!----------------------------------------------------------------------
278	!!
279	REAL(wp) :: xkr0 !: water coefficient absorption in red (NAMELIST)
280	REAL(wp) :: xkg0 !: water coefficient absorption in green (NAMELIST)
281	REAL(wp) :: xkrp !: pigment coefficient absorption in red (NAMELIST)
282	REAL(wp) :: xkgp !: pigment coefficient absorption in green (NAMELIST)
283	REAL(wp) :: xlr !: exposant for pigment absorption in red (NAMELIST)
284	REAL(wp) :: xlg !: exposant for pigment absorption in green (NAMELIST)
285	REAL(wp) :: rpig !: chla/chla+phea ratio (NAMELIST)
286
287	INTEGER , ALLOCATABLE, SAVE, DIMENSION(:,:) :: neln !: number of levels in the euphotic layer
288	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: xze !: euphotic layer depth
289	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: xpar !: par (photosynthetic available radiation)
290
291	!!----------------------------------------------------------------------
292	!! Sediment parameters
293	!!
294	!! AXY (16/01/12): these parameters were originally part of the pre-
295	!! cursor model on which MEDUSA's code was grounded;
296	!! they do not relate to the sediment/benthos submodel
297	!! added as part of the ROAM project; they have only
298	!! been retained because they are distributed through
299	!! MEDUSA and require a proper clean-up to purge
300	!!----------------------------------------------------------------------
301	!!
302	REAL(wp) :: sedlam !: time coefficient of POC remineralization in sediments
303	REAL(wp) :: sedlostpoc !: ???
304	REAL(wp) :: areacot !: ???
305
306	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: dminl !: fraction of sinking POC released in sediments
307	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: dmin3 !: fraction of sinking POC released at each level
308
309	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: sedpocb !: mass of POC in sediments
310	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: sedpocn !: mass of POC in sediments
311	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: sedpoca !: mass of POC in sediments
312
313	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: fbodf !: rapid sinking particles
314	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: fbods !: rapid sinking particles
315	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: fbodn !: rapid sinking particles
316
317	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: ffln !:
318	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: fflf !:
319	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: ffls !:
320
321	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: cmask !: ???
322
323	!!----------------------------------------------------------------------
324	!! NEMO/TOP 3.3 , NEMO Consortium (2010)
325	!! $Id$
326	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
327	!!----------------------------------------------------------------------
328	CONTAINS
329
330	INTEGER FUNCTION sms_medusa_alloc()
331	!!----------------------------------------------------------------------
332	!! * ROUTINE sms_medusa_alloc *
333	!!----------------------------------------------------------------------
334	USE lib_mpp , ONLY: ctl_warn
335	INTEGER :: ierr(8) ! Local variables
336	!!----------------------------------------------------------------------
337	ierr(:) = 0
338	!
339	#if defined key_medusa
340	!* depth-dependent damping coefficient
341	ALLOCATE( remdmp(jpk,jp_medusa), STAT=ierr(1) )
342	# if defined key_roam
343	!* 2D and 3D fields of carbonate system parameters
344	ALLOCATE( f2_ccd_cal(jpi,jpj) , f2_ccd_arg(jpi,jpj) , &
345	& f3_pH(jpi,jpj,jpk) , f3_h2co3(jpi,jpj,jpk), &
346	& f3_hco3(jpi,jpj,jpk) , f3_co3(jpi,jpj,jpk) , &
347	& f3_omcal(jpi,jpj,jpk), f3_omarg(jpi,jpj,jpk), STAT=ierr(2) )
348	!* 2D fields of organic and inorganic material sedimented on the seafloor
349	ALLOCATE( zb_sed_n(jpi,jpj) , zn_sed_n(jpi,jpj) , &
350	& za_sed_n(jpi,jpj) , &
351	& zb_sed_fe(jpi,jpj) , zn_sed_fe(jpi,jpj) , &
352	& za_sed_fe(jpi,jpj) , &
353	& zb_sed_si(jpi,jpj) , zn_sed_si(jpi,jpj) , &
354	& za_sed_si(jpi,jpj) , &
355	& zb_sed_c(jpi,jpj) , zn_sed_c(jpi,jpj) , &
356	& za_sed_c(jpi,jpj) , &
357	& zb_sed_ca(jpi,jpj) , zn_sed_ca(jpi,jpj) , &
358	& za_sed_ca(jpi,jpj) , STAT=ierr(3) )
359	!* 2D fields of temporally averaged properties for DMS calculations (AXY, 07/07/15)
360	ALLOCATE( zb_dms_chn(jpi,jpj) , zn_dms_chn(jpi,jpj) , &
361	& za_dms_chn(jpi,jpj) , &
362	& zb_dms_chd(jpi,jpj) , zn_dms_chd(jpi,jpj) , &
363	& za_dms_chd(jpi,jpj) , &
364	& zb_dms_mld(jpi,jpj) , zn_dms_mld(jpi,jpj) , &
365	& za_dms_mld(jpi,jpj) , &
366	& zb_dms_qsr(jpi,jpj) , zn_dms_qsr(jpi,jpj) , &
367	& za_dms_qsr(jpi,jpj) , &
368	& zb_dms_din(jpi,jpj) , zn_dms_din(jpi,jpj) , &
369	& za_dms_din(jpi,jpj) , STAT=ierr(4) )
370	!* 2D fields needing to be knows at first tstp for coupling with atm -
371	!UKESM (Jpalm,14-06-2016)
372	ALLOCATE( zb_co2_flx(jpi,jpj) , zn_co2_flx(jpi,jpj) , &
373	& za_co2_flx(jpi,jpj) , &
374	& zb_dms_srf(jpi,jpj) , zn_dms_srf(jpi,jpj) , &
375	& za_dms_srf(jpi,jpj) , STAT=ierr(5) )
376	# endif
377	!* 2D fields of miscellaneous parameters
378	ALLOCATE( ocal_ccd(jpi,jpj) , dust(jpi,jpj) , &
379	& zirondep(jpi,jpj) , &
380	& riv_n(jpi,jpj) , &
381	& riv_si(jpi,jpj) , riv_c(jpi,jpj) , &
382	& riv_alk(jpi,jpj) , friver_dep(jpk,jpk) , STAT=ierr(6) )
383	!* 2D and 3D fields of light parameters
384	ALLOCATE( neln(jpi,jpj) , xze(jpi,jpj) , &
385	& xpar(jpi,jpj,jpk) , STAT=ierr(7) )
386	!* 2D and 3D fields of sediment-associated parameters
387	ALLOCATE( dminl(jpi,jpj) , dmin3(jpi,jpj,jpk) , &
388	& sedpocb(jpi,jpj) , sedpocn(jpi,jpj) , &
389	& sedpoca(jpi,jpj) , fbodn(jpi,jpj) , &
390	& fbodf(jpi,jpj) , fbods(jpi,jpj) , &
391	& ffln(jpi,jpj,jpk) , fflf(jpi,jpj,jpk) , &
392	& ffls(jpi,jpj,jpk) , cmask(jpi,jpj) , STAT=ierr(8) )
393	#endif
394	!
395	sms_medusa_alloc = MAXVAL( ierr )
396	!
397	IF( sms_medusa_alloc /= 0 ) CALL ctl_warn('sms_medusa_alloc: failed to allocate arrays')
398	!
399	END FUNCTION sms_medusa_alloc
400
401	#else
402	!!----------------------------------------------------------------------
403	!! Empty module : NO MEDUSA model
404	!!----------------------------------------------------------------------
405	#endif
406
407	!!======================================================================
408	END MODULE sms_medusa

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