/[MITgcm]/MITgcm_contrib/bling/pkg/bling_production.F
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Revision 1.4 - (hide annotations) (download)
Sun May 15 00:30:35 2016 UTC (9 years, 2 months ago) by mmazloff
Branch: MAIN
Changes since 1.3: +5 -18 lines
Cleaning up TAF stores

1 mmazloff 1.3 C $Header: /u/gcmpack/MITgcm_contrib/bling/pkg/bling_production.F,v 1.2 2016/02/28 21:49:24 mmazloff Exp $
2     C $Name: $
3 mmazloff 1.1
4     #include "BLING_OPTIONS.h"
5    
6     CBOP
7     subroutine BLING_PROD(
8 mmazloff 1.2 I PTR_NO3, PTR_PO4, PTR_FE,
9     I PTR_O2, PTR_DON, PTR_DOP,
10     O G_NO3, G_PO4, G_FE,
11     O G_O2, G_DON, G_DOP, G_CACO3,
12 mmazloff 1.1 I bi, bj, imin, imax, jmin, jmax,
13     I myIter, myTime, myThid )
14    
15     C =================================================================
16     C | subroutine bling_prod
17     C | o Nutrient uptake and partitioning between organic pools.
18     C | - Phytoplankton biomass-specific growth rate is calculated
19     C | as a function of light, nutrient limitation, and
20     C | temperature.
21 mmazloff 1.2 C | - Biomass growth xxx
22 mmazloff 1.1 C =================================================================
23    
24     implicit none
25    
26     C === Global variables ===
27     C P_sm :: Small phytoplankton biomass
28     C P_lg :: Large phytoplankton biomass
29 mmazloff 1.2 C P_diaz :: Diazotroph phytoplankton biomass
30 mmazloff 1.1
31     #include "SIZE.h"
32     #include "DYNVARS.h"
33     #include "EEPARAMS.h"
34     #include "PARAMS.h"
35     #include "GRID.h"
36     #include "BLING_VARS.h"
37     #include "PTRACERS_SIZE.h"
38     #include "PTRACERS_PARAMS.h"
39 mmazloff 1.2 #ifdef ALLOW_AUTODIFF
40 mmazloff 1.1 # include "tamc.h"
41     #endif
42    
43     C === Routine arguments ===
44     C bi,bj :: tile indices
45     C iMin,iMax :: computation domain: 1rst index range
46     C jMin,jMax :: computation domain: 2nd index range
47     C myTime :: current time
48     C myIter :: current timestep
49     C myThid :: thread Id. number
50     INTEGER bi, bj, imin, imax, jmin, jmax
51     _RL myTime
52     INTEGER myIter
53     INTEGER myThid
54     C === Input ===
55 mmazloff 1.2 C PTR_NO3 :: nitrate concentration
56     C PTR_PO4 :: phosphate concentration
57 mmazloff 1.1 C PTR_FE :: iron concentration
58 mmazloff 1.2 C PTR_DON :: dissolved organic nitrogen concentration
59     C PTR_DOP :: dissolved organic phosphorus concentration
60 mmazloff 1.1 C PTR_O2 :: oxygen concentration
61 mmazloff 1.2 _RL PTR_NO3(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
62     _RL PTR_PO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
63 mmazloff 1.1 _RL PTR_FE (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
64     _RL PTR_O2 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
65 mmazloff 1.2 _RL PTR_DON(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
66     _RL PTR_DOP(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
67 mmazloff 1.1 C === Output ===
68 mmazloff 1.2 C G_xxx :: Tendency of xxx
69     _RL G_NO3 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
70     _RL G_PO4 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
71     _RL G_FE (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
72     _RL G_O2 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
73     _RL G_DON (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
74     _RL G_DOP (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
75     _RL G_CACO3 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
76 mmazloff 1.1
77     #ifdef ALLOW_BLING
78     C === Local variables ===
79 mmazloff 1.2 C i,j,k :: loop indicesi
80 mmazloff 1.1 C irr_eff :: effective irradiance
81 mmazloff 1.2 C NO3_lim :: nitrate limitation
82     C PO4_lim :: phosphate limitation
83     C Fe_lim :: iron limitation for phytoplankton
84     C Fe_lim_diaz :: iron limitation for diazotrophs
85 mmazloff 1.1 C alpha_Fe :: initial slope of the P-I curve
86     C theta_Fe :: Chl:C ratio
87     C theta_Fe_max :: Fe-replete maximum Chl:C ratio
88     C irrk :: nut-limited efficiency of algal photosystems
89 mmazloff 1.2 C irr_inst :: instantaneous light
90     C irr_eff :: available light
91     C mld :: mixed layer depth
92     C Pc_m :: light-saturated max photosynthesis rate for phyt
93     C Pc_m_diaz :: light-saturated max photosynthesis rate for diaz
94 mmazloff 1.1 C Pc_tot :: carbon-specific photosynthesis rate
95     C expkT :: temperature function
96 mmazloff 1.2 C mu :: net carbon-specific growth rate for phyt
97     C mu_diaz :: net carbon-specific growth rate for diaz
98     C N_uptake :: NO3 utilization by phytoplankton
99     C N_fix :: Nitrogen fixation by diazotrophs
100     C P_uptake :: PO4 utilization by phytoplankton
101     C Fe_uptake :: dissolved Fe utilization by phytoplankton
102     C CaCO3_uptake :: Calcium carbonate uptake for shell formation
103     C DON_prod :: production of dissolved organic nitrogen
104     C DOP_prod :: production of dissolved organic phosphorus
105     C O2_prod :: production of oxygen
106     C
107 mmazloff 1.1 INTEGER i,j,k
108 mmazloff 1.2 INTEGER tmp
109     _RL th1
110     _RL th2
111     _RL th3
112     _RL NO3_lim(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
113     _RL PO4_lim(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
114     _RL Fe_lim(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
115     _RL Fe_lim_diaz(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
116     _RL expkT(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
117     _RL Pc_m
118     _RL Pc_m_diaz
119     _RL theta_Fe_max
120     _RL theta_Fe
121     _RL irrk(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
122     _RL irr_inst(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
123 mmazloff 1.1 _RL irr_eff(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
124 mmazloff 1.2 _RL mld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
125     _RL mu(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
126     _RL mu_diaz(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
127     _RL PtoN(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
128     _RL FetoN(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
129     _RL N_uptake(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
130     _RL N_fix(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
131     _RL N_den_pelag(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
132     _RL N_den_benthic(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
133     _RL P_uptake(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
134     _RL Fe_uptake(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
135     _RL CaCO3_uptake(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
136     _RL CaCO3_diss(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
137     _RL DON_prod(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
138     _RL DOP_prod(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
139     _RL DON_remin(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
140     _RL DOP_remin(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
141     _RL O2_prod(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
142     _RL frac_exp
143     _RL N_spm(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
144     _RL P_spm(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
145     _RL Fe_spm(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
146     _RL N_dvm(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
147     _RL P_dvm(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
148     _RL Fe_dvm(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
149     _RL N_recycle(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
150     _RL P_recycle(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
151     _RL Fe_recycle(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
152     _RL N_reminp(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
153     _RL P_reminp(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
154     _RL Fe_reminsum(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
155     _RL N_remindvm(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
156     _RL P_remindvm(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
157     _RL Fe_remindvm(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
158     _RL POC_flux(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
159     _RL NPP(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
160     _RL NCP(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
161     #ifdef ML_MEAN_PHYTO
162     _RL tmp_p_sm_ML
163     _RL tmp_p_lg_ML
164     _RL tmp_p_diaz_ML
165     _RL tmp_ML
166     #endif
167 mmazloff 1.1 CEOP
168    
169     c ---------------------------------------------------------------------
170     c Initialize output and diagnostics
171 mmazloff 1.2 DO j=jmin,jmax
172     DO i=imin,imax
173     mld(i,j) = 0. _d 0
174     ENDDO
175     ENDDO
176 mmazloff 1.1 DO k=1,Nr
177     DO j=jmin,jmax
178     DO i=imin,imax
179 mmazloff 1.2 G_NO3(i,j,k) = 0. _d 0
180     G_PO4(i,j,k) = 0. _d 0
181     G_Fe(i,j,k) = 0. _d 0
182     G_O2(i,j,k) = 0. _d 0
183     G_DON(i,j,k) = 0. _d 0
184     G_DOP(i,j,k) = 0. _d 0
185     G_CaCO3(i,j,k) = 0. _d 0
186     N_uptake(i,j,k) = 0. _d 0
187     N_fix(i,j,k) = 0. _d 0
188     N_den_pelag(i,j,k) = 0. _d 0
189     N_den_benthic(i,j,k)= 0. _d 0
190     P_uptake(i,j,k) = 0. _d 0
191 mmazloff 1.1 Fe_uptake(i,j,k) = 0. _d 0
192 mmazloff 1.2 CaCO3_uptake(i,j,k) = 0. _d 0
193     DON_prod(i,j,k) = 0. _d 0
194     DOP_prod(i,j,k) = 0. _d 0
195     O2_prod(i,j,k) = 0. _d 0
196     mu_diaz(i,j,k) = 0. _d 0
197 mmazloff 1.1 irr_eff(i,j,k) = 0. _d 0
198 mmazloff 1.2 irr_inst(i,j,k) = 0. _d 0
199 mmazloff 1.3 irrk(i,j,k) = 0. _d 0
200     NO3_lim(i,j,k) = 0. _d 0
201     PO4_lim(i,j,k) = 0. _d 0
202     Fe_lim(i,j,k) = 0. _d 0
203     Fe_lim_diaz(i,j,k) = 0. _d 0
204 mmazloff 1.2 PtoN(i,j,k) = 0. _d 0
205     FetoN(i,j,k) = 0. _d 0
206     NPP(i,j,k) = 0. _d 0
207     N_reminp(i,j,k) = 0. _d 0
208     P_reminp(i,j,k) = 0. _d 0
209     Fe_reminsum(i,j,k) = 0. _d 0
210     N_remindvm(i,j,k) = 0. _d 0
211     P_remindvm(i,j,k) = 0. _d 0
212 mmazloff 1.1 ENDDO
213     ENDDO
214     ENDDO
215    
216 mmazloff 1.2
217     c-----------------------------------------------------------
218     c avoid negative nutrient concentrations that can result from
219     c advection when low concentrations
220    
221     #ifdef BLING_NO_NEG
222     CALL TRACER_MIN_VAL( PTR_NO3, 1. _d -7)
223     CALL TRACER_MIN_VAL( PTR_PO4, 1. _d -8)
224     CALL TRACER_MIN_VAL( PTR_FE, 1. _d -11)
225 mmazloff 1.3 CALL TRACER_MIN_VAL( PTR_O2, 1. _d -11)
226     CALL TRACER_MIN_VAL( PTR_DON, 1. _d -11)
227     CALL TRACER_MIN_VAL( PTR_DOP, 1. _d -11)
228 mmazloff 1.2 #endif
229    
230     c-----------------------------------------------------------
231     c mixed layer depth calculation for light and dvm
232     c
233     CALL BLING_MIXEDLAYER(
234     U mld,
235     I bi, bj, imin, imax, jmin, jmax,
236     I myIter, myTime, myThid)
237    
238     c Phytoplankton mixing
239     c The mixed layer is assumed to homogenize vertical gradients of phytoplankton.
240     c This allows for basic Sverdrup dynamics in a qualitative sense.
241     c This has not been thoroughly tested, and care should be
242     c taken with its interpretation.
243    
244 mmazloff 1.3
245 mmazloff 1.2 #ifdef ML_MEAN_PHYTO
246     DO j=jmin,jmax
247     DO i=imin,imax
248    
249     tmp_p_sm_ML = 0. _d 0
250     tmp_p_lg_ML = 0. _d 0
251     tmp_p_diaz_ML = 0. _d 0
252     tmp_ML = 0. _d 0
253    
254     DO k=1,Nr
255    
256     IF (hFacC(i,j,k,bi,bj).gt.0. _d 0) THEN
257     IF ((-rf(k+1) .le. mld(i,j)).and.
258     & (-rf(k+1).lt.200. _d 0)) THEN
259     tmp_p_sm_ML = tmp_p_sm_ML+P_sm(i,j,k,bi,bj)*drF(k)
260     & *hFacC(i,j,k,bi,bj)
261     tmp_p_lg_ML = tmp_p_lg_ML+P_lg(i,j,k,bi,bj)*drF(k)
262     & *hFacC(i,j,k,bi,bj)
263     tmp_p_diaz_ML = tmp_p_diaz_ML+P_diaz(i,j,k,bi,bj)*drF(k)
264     & *hFacC(i,j,k,bi,bj)
265     tmp_ML = tmp_ML + drF(k)
266     ENDIF
267     ENDIF
268    
269     ENDDO
270    
271     DO k=1,Nr
272    
273     IF (hFacC(i,j,k,bi,bj).gt.0. _d 0) THEN
274     IF ((-rf(k+1) .le. mld(i,j)).and.
275     & (-rf(k+1).lt.200. _d 0)) THEN
276    
277     P_sm(i,j,k,bi,bj) = max(1. _d -8,tmp_p_sm_ML/tmp_ML)
278     P_lg(i,j,k,bi,bj) = max(1. _d -8,tmp_p_lg_ML/tmp_ML)
279     P_diaz(i,j,k,bi,bj) = max(1. _d -8,tmp_p_diaz_ML/tmp_ML)
280    
281     ENDIF
282     ENDIF
283    
284     ENDDO
285     ENDDO
286     ENDDO
287    
288     #endif
289    
290    
291     c-----------------------------------------------------------
292     c light availability for biological production
293     CALL BLING_LIGHT(
294     I mld,
295     U irr_inst, irr_eff,
296 mmazloff 1.1 I bi, bj, imin, imax, jmin, jmax,
297     I myIter, myTime, myThid )
298 mmazloff 1.2
299     c phytoplankton photoadaptation to local light level
300     DO k=1,Nr
301     DO j=jmin,jmax
302     DO i=imin,imax
303    
304     irr_mem(i,j,k,bi,bj) = irr_mem(i,j,k,bi,bj) +
305     & (irr_eff(i,j,k) - irr_mem(i,j,k,bi,bj))*
306     & min( 1. _d 0, gamma_irr_mem*PTRACERS_dTLev(k) )
307    
308     ENDDO
309     ENDDO
310     ENDDO
311    
312 mmazloff 1.1 c ---------------------------------------------------------------------
313     c Nutrient uptake and partitioning between organic pools
314    
315     DO k=1,Nr
316     DO j=jmin,jmax
317     DO i=imin,imax
318    
319     IF (hFacC(i,j,k,bi,bj) .gt. 0. _d 0) THEN
320    
321     c ---------------------------------------------------------------------
322     c First, calculate the limitation terms for NUT and Fe, and the
323     c Fe-limited Chl:C maximum. The light-saturated maximal photosynthesis
324     c rate term (Pc_m) is simply the product of a prescribed maximal
325     c photosynthesis rate (Pc_0), the Eppley temperature dependence, and a
326     c resource limitation term. The iron limitation term has a lower limit
327     c of Fe_lim_min and is scaled by (k_Fe2P + Fe2P_max) / Fe2P_max so that
328     c it approaches 1 as Fe approaches infinity. Thus, it is of comparable
329     c magnitude to the macro-nutrient limitation term.
330    
331     c Macro-nutrient limitation
332 mmazloff 1.2 NO3_lim(i,j,k) = PTR_NO3(i,j,k)/(PTR_NO3(i,j,k)+k_NO3)
333 mmazloff 1.1
334 mmazloff 1.2 PO4_lim(i,j,k) = PTR_PO4(i,j,k)/(PTR_PO4(i,j,k)+k_PO4)
335 mmazloff 1.1
336     c Iron limitation
337 mmazloff 1.2
338     Fe_lim(i,j,k) = PTR_FE(i,j,k) / (PTR_FE(i,j,k)+k_Fe)
339    
340     Fe_lim_diaz(i,j,k) = PTR_FE(i,j,k) / (PTR_FE(i,j,k)+k_Fe_diaz)
341 mmazloff 1.1
342     c ---------------------------------------------------------------------
343 mmazloff 1.2 c Diazotrophs are assumed to be more strongly temperature sensitive,
344     c given their observed restriction to relatively warm waters. Presumably
345     c this is because of the difficulty of achieving N2 fixation in an oxic
346     c environment. Thus, they have lower pc_0 and higher kappa_eppley.
347     c Taking the square root, to provide the geometric mean.
348 mmazloff 1.1
349 mmazloff 1.2 expkT(i,j,k) = exp(kappa_eppley * theta(i,j,k,bi,bj))
350    
351 mmazloff 1.1 c Light-saturated maximal photosynthesis rate
352 mmazloff 1.2
353     #ifdef BLING_ADJOINT_SAFE_tmp_xxxxxxxxxxxxxxxxxx_needs_testing
354     th1 = tanh( (NO3_lim(i,j,k)-PO4_lim(i,j,k))*1. _d 6 )
355     nut_lim = ( 1. _d 0 - th1 ) * NO3_lim(i,j,k) * 0.5 _d 0
356     & + ( 1. _d 0 + th1 ) * PO4_lim(i,j,k) * 0.5 _d 0
357    
358     th2 = tanh( (nut_lim-Fe_lim(i,j,k))*1. _d 6 )
359     tot_lim = ( 1. _d 0 - th2 ) * nut_lim * 0.5 _d 0
360     & + ( 1. _d 0 + th2 ) * Fe_lim(i,j,k) * 0.5 _d 0
361    
362     th3 = tanh( (PO4_lim(i,j,k)-Fe_lim(i,j,k))*1. _d 6 )
363     diaz_lim = ( 1. _d 0 - th3 ) * PO4_lim(i,j,k) * 0.5 _d 0
364     & + ( 1. _d 0 + th3 ) * Fe_lim(i,j,k) * 0.5 _d 0
365    
366    
367     Pc_m = Pc_0 * expkT(i,j,k) * tot_lim
368     & * maskC(i,j,k,bi,bj)
369    
370     Pc_m_diaz = Pc_0_diaz
371     & * exp(kappa_eppley_diaz * theta(i,j,k,bi,bj))
372     & * diaz_lim * maskC(i,j,k,bi,bj)
373    
374 mmazloff 1.1 #else
375 mmazloff 1.2
376     Pc_m = Pc_0 * expkT(i,j,k)
377     & * min(NO3_lim(i,j,k), PO4_lim(i,j,k), Fe_lim(i,j,k))
378     & * maskC(i,j,k,bi,bj)
379    
380     Pc_m_diaz = Pc_0_diaz
381     & * exp(kappa_eppley_diaz * theta(i,j,k,bi,bj))
382     & * min(PO4_lim(i,j,k), Fe_lim_diaz(i,j,k))
383     & * maskC(i,j,k,bi,bj)
384    
385 mmazloff 1.3 CMM( Pc_m and Pc_m_diaz crash adjoint if get too small
386     #ifdef BLING_ADJOINT_SAFE
387     Pc_m = MAX(Pc_m ,maskC(i,j,k,bi,bj)*1. _d -15)
388     Pc_m_diaz = MAX(Pc_m_diaz,maskC(i,j,k,bi,bj)*1. _d -15)
389     #endif
390     CMM)
391 mmazloff 1.1 #endif
392    
393 mmazloff 1.2
394 mmazloff 1.1 c ---------------------------------------------------------------------
395     c Fe limitation 1) reduces photosynthetic efficiency (alpha_Fe)
396     c and 2) reduces the maximum achievable Chl:C ratio (theta_Fe)
397     c below a prescribed, Fe-replete maximum value (theta_Fe_max),
398     c to approach a prescribed minimum Chl:C (theta_Fe_min) under extreme
399     c Fe-limitation.
400    
401     theta_Fe_max = theta_Fe_max_lo+
402 mmazloff 1.2 & (theta_Fe_max_hi-theta_Fe_max_lo)*Fe_lim(i,j,k)
403    
404     theta_Fe = theta_Fe_max/(1. _d 0 + alpha_photo*theta_Fe_max
405     & *irr_mem(i,j,k,bi,bj)/(epsln + 2. _d 0*Pc_m))
406 mmazloff 1.1
407     c ---------------------------------------------------------------------
408     c Nutrient-limited efficiency of algal photosystems, irrk, is calculated
409     c with the iron limitation term included as a multiplier of the
410     c theta_Fe_max to represent the importance of Fe in forming chlorophyll
411     c accessory antennae, which do not affect the Chl:C but still affect the
412     c phytoplankton ability to use light (eg Stzrepek & Harrison, Nature 2004).
413    
414 mmazloff 1.2 irrk(i,j,k) = Pc_m/(epsln + alpha_photo*theta_Fe_max) +
415 mmazloff 1.1 & irr_mem(i,j,k,bi,bj)/2. _d 0
416    
417     c Carbon-specific photosynthesis rate
418 mmazloff 1.2 mu(i,j,k) = Pc_m * ( 1. _d 0 - exp(-irr_eff(i,j,k)
419     & /(epsln + irrk(i,j,k))))
420    
421     mu_diaz(i,j,k) = Pc_m_diaz * ( 1. _d 0 - exp(-irr_eff(i,j,k)
422     & /(epsln + irrk(i,j,k))))
423    
424     ENDIF
425     ENDDO
426     ENDDO
427     ENDDO
428    
429     c Instantaneous nutrient concentration in phyto biomass
430     c Separate loop so adjoint stuff above can be outside loop
431     c (fix for recomputations)
432 mmazloff 1.4 CMM(
433     CADJ STORE P_sm = comlev1, key = ikey_dynamics, kind=isbyte
434     CADJ STORE P_lg = comlev1, key = ikey_dynamics, kind=isbyte
435     CADJ STORE P_diaz = comlev1, key = ikey_dynamics, kind=isbyte
436     CMM)
437 mmazloff 1.2 DO k=1,Nr
438     DO j=jmin,jmax
439     DO i=imin,imax
440    
441     IF (hFacC(i,j,k,bi,bj) .gt. 0. _d 0) THEN
442    
443     c expkT = exp(kappa_eppley * theta(i,j,k,bi,bj))
444 mmazloff 1.1
445     P_lg(i,j,k,bi,bj) = P_lg(i,j,k,bi,bj) +
446 mmazloff 1.2 & P_lg(i,j,k,bi,bj)*(mu(i,j,k) - lambda_0
447     & *expkT(i,j,k) *
448     & (P_lg(i,j,k,bi,bj)/pivotal)**(1. / 3.))
449     & * PTRACERS_dTLev(k)
450    
451     P_sm(i,j,k,bi,bj) = P_sm(i,j,k,bi,bj) +
452     & P_sm(i,j,k,bi,bj)*(mu(i,j,k) - lambda_0
453     & *expkT(i,j,k) * (P_sm(i,j,k,bi,bj)/pivotal) )
454     & * PTRACERS_dTLev(k)
455    
456     P_diaz(i,j,k,bi,bj) = P_diaz(i,j,k,bi,bj) +
457     & P_diaz(i,j,k,bi,bj)*(mu_diaz(i,j,k) - lambda_0
458     & *expkT(i,j,k) * (P_diaz(i,j,k,bi,bj)/pivotal) )
459     & * PTRACERS_dTLev(k)
460 mmazloff 1.1
461 mmazloff 1.2 ENDIF
462     ENDDO
463     ENDDO
464     ENDDO
465    
466     DO k=1,Nr
467     DO j=jmin,jmax
468     DO i=imin,imax
469    
470     IF (hFacC(i,j,k,bi,bj) .gt. 0. _d 0) THEN
471    
472 mmazloff 1.1 c use the diagnostic biomass to calculate the chl concentration
473 mmazloff 1.2 chl(i,j,k,bi,bj) = max(chl_min, CtoN * 12.01 * theta_Fe *
474     & (P_lg(i,j,k,bi,bj) + P_sm(i,j,k,bi,bj)
475     & + P_diaz(i,j,k,bi,bj)))
476    
477     c stoichiometry
478     PtoN(i,j,k) = PtoN_min + (PtoN_max - PtoN_min) *
479     & PTR_PO4(i,j,k) / (k_PtoN + PTR_PO4(i,j,k))
480    
481     FetoN(i,j,k) = FetoN_min + (FetoN_max - FetoN_min) *
482     & PTR_FE(i,j,k) / (k_FetoN + PTR_FE(i,j,k))
483    
484 mmazloff 1.1 c Nutrient uptake
485 mmazloff 1.2 N_uptake(i,j,k) = mu(i,j,k)*(P_sm(i,j,k,bi,bj)
486     & + P_lg(i,j,k,bi,bj))
487 mmazloff 1.1
488 mmazloff 1.2 N_fix(i,j,k) = mu_diaz(i,j,k) * P_diaz(i,j,k,bi,bj)
489    
490     P_uptake(i,j,k) = (N_uptake(i,j,k) +
491     & N_fix(i,j,k)) * PtoN(i,j,k)
492    
493     Fe_uptake(i,j,k) = (N_uptake(i,j,k) +
494     & N_fix(i,j,k)) * FetoN(i,j,k)
495    
496     c ---------------------------------------------------------------------
497     c Alkalinity is consumed through the production of CaCO3. Here, this is
498     c simply a linear function of the implied growth rate of small
499     c phytoplankton, which gave a reasonably good fit to the global
500     c observational synthesis of Dunne (2009). This is consistent
501     c with the findings of Jin et al. (GBC,2006).
502    
503     CaCO3_uptake(i,j,k) = P_sm(i,j,k,bi,bj) * phi_sm *expkT(i,j,k)
504     & * mu(i,j,k) * CatoN
505    
506 mmazloff 1.1 c ---------------------------------------------------------------------
507     c Partitioning between organic pools
508    
509     c The uptake of nutrients is assumed to contribute to the growth of
510     c phytoplankton, which subsequently die and are consumed by heterotrophs.
511     c This can involve the transfer of nutrient elements between many
512     c organic pools, both particulate and dissolved, with complex histories.
513     c We take a simple approach here, partitioning the total uptake into two
514     c fractions - sinking and non-sinking - as a function of temperature,
515     c following Dunne et al. (2005).
516     c Then, the non-sinking fraction is further subdivided, such that the
517     c majority is recycled instantaneously to the inorganic nutrient pool,
518     c representing the fast turnover of labile dissolved organic matter via
519     c the microbial loop, and the remainder is converted to semi-labile
520     c dissolved organic matter. Iron and macro-nutrient are treated
521     c identically for the first step, but all iron is recycled
522     c instantaneously in the second step (i.e. there is no dissolved organic
523     c iron pool).
524    
525     c sinking fraction: particulate organic matter
526 mmazloff 1.2
527     c expkT(i,j,k) = exp(kappa_eppley * theta(i,j,k,bi,bj))
528    
529     frac_exp = (phi_sm + phi_lg * (mu(i,j,k)/
530     & (epsln + lambda_0*expkT(i,j,k)))**2.)/
531     & (1. + (mu(i,j,k)/(epsln + lambda_0*expkT(i,j,k)))**2.)*
532     & exp(kappa_remin * theta(i,j,k,bi,bj))
533    
534     N_spm(i,j,k) = frac_exp * (1.0 - phi_dvm) *
535     & (N_uptake(i,j,k) + N_fix(i,j,k))
536    
537     P_spm(i,j,k) = frac_exp * (1.0 - phi_dvm) *
538     & P_uptake(i,j,k)
539    
540     Fe_spm(i,j,k) = frac_exp * (1.0 - phi_dvm) *
541     & Fe_uptake(i,j,k)
542    
543     N_dvm(i,j,k) = frac_exp *
544     & (N_uptake(i,j,k) + N_fix(i,j,k)) - N_spm(i,j,k)
545    
546     P_dvm(i,j,k) = frac_exp * P_uptake(i,j,k) -
547     & P_spm(i,j,k)
548    
549     Fe_dvm(i,j,k) = frac_exp * Fe_uptake(i,j,k) -
550     & Fe_spm(i,j,k)
551    
552 mmazloff 1.1 c the remainder is divided between instantaneously recycled and
553     c long-lived dissolved organic matter.
554    
555 mmazloff 1.2 DON_prod(i,j,k) = phi_DOM*(N_uptake(i,j,k)
556     & + N_fix(i,j,k) - N_spm(i,j,k)
557     & - N_dvm(i,j,k))
558    
559     DOP_prod(i,j,k) = phi_DOM*(P_uptake(i,j,k)
560     & - P_spm(i,j,k) - P_dvm(i,j,k))
561    
562     N_recycle(i,j,k) = N_uptake(i,j,k) + N_fix(i,j,k)
563     & - N_spm(i,j,k) - DON_prod(i,j,k)
564     & - N_dvm(i,j,k)
565    
566     P_recycle(i,j,k) = P_uptake(i,j,k)
567     & - P_spm(i,j,k) - DOP_prod(i,j,k)
568     & - P_dvm(i,j,k)
569    
570     Fe_recycle(i,j,k) = Fe_uptake(i,j,k)
571     & - Fe_spm(i,j,k) - Fe_dvm(i,j,k)
572    
573     ENDIF
574    
575     ENDDO
576     ENDDO
577     ENDDO
578    
579    
580     c-----------------------------------------------------------
581     c remineralization of sinking organic matter
582     CALL BLING_REMIN(
583     I PTR_NO3, PTR_FE, PTR_O2, irr_inst,
584     I N_spm, P_spm, Fe_spm, CaCO3_uptake,
585     U N_reminp, P_reminp, Fe_reminsum,
586     U N_den_benthic, CACO3_diss,
587     I bi, bj, imin, imax, jmin, jmax,
588     I myIter, myTime, myThid)
589    
590     c-----------------------------------------------------------
591     c remineralization from diel vertical migration
592     CALL BLING_DVM(
593     I N_dvm,P_dvm,Fe_dvm,
594     I PTR_O2, mld,
595     O N_remindvm, P_remindvm, Fe_remindvm,
596     I bi, bj, imin, imax, jmin, jmax,
597     I myIter, myTime, myThid)
598 mmazloff 1.1
599    
600 mmazloff 1.2 c-----------------------------------------------------------
601     c sub grid scale sediments
602     #ifdef USE_SGS_SED
603     CALL BLING_SGS(
604     I xxx,
605     O xxx,
606     I bi, bj, imin, imax, jmin, jmax,
607     I myIter, myTime, myThid)#endif
608     #endif
609    
610    
611     c-----------------------------------------------------------
612     c
613 mmazloff 1.1
614 mmazloff 1.2 DO k=1,Nr
615     DO j=jmin,jmax
616     DO i=imin,imax
617    
618     IF (hFacC(i,j,k,bi,bj) .gt. 0. _d 0) THEN
619    
620    
621     c Dissolved organic matter slow remineralization
622    
623     #ifdef BLING_NO_NEG
624     DON_remin(i,j,k) = MAX(maskC(i,j,k,bi,bj)*gamma_DON
625     & *PTR_DON(i,j,k),0. _d 0)
626     DOP_remin(i,j,k) = MAX(maskC(i,j,k,bi,bj)*gamma_DOP
627     & *PTR_DOP(i,j,k),0. _d 0)
628     #else
629     DON_remin(i,j,k) = maskC(i,j,k,bi,bj)*gamma_DON
630     & *PTR_DON(i,j,k)
631     DOP_remin(i,j,k) = maskC(i,j,k,bi,bj)*gamma_DOP
632     & *PTR_DOP(i,j,k)
633     #endif
634 mmazloff 1.1
635 mmazloff 1.2
636     c Pelagic denitrification
637     c If anoxic
638     cxx IF (PTR_O2(i,j,k) .lt. 0. _d 0) THEN
639    
640     IF (PTR_O2(i,j,k) .lt. oxic_min) THEN
641     IF (PTR_NO3(i,j,k) .gt. oxic_min) THEN
642     N_den_pelag(i,j,k) = max(epsln, (NO3toN *
643     & ((1. _d 0 - phi_DOM) * (N_reminp(i,j,k)
644     & + N_remindvm(i,j,k)) + DON_remin(i,j,k) +
645     & N_recycle(i,j,k))) - N_den_benthic(i,j,k))
646     ENDIF
647     ENDIF
648    
649     c Carbon flux diagnostic
650     POC_flux(i,j,k) = CtoN * N_spm(i,j,k)
651    
652     NPP(i,j,k) = (N_uptake(i,j,k) + N_fix(i,j,k)) * CtoN
653    
654     c oxygen production through photosynthesis
655     O2_prod(i,j,k) = O2toN * N_uptake(i,j,k)
656     & + (O2toN - 1.25 _d 0) * N_fix(i,j,k)
657    
658    
659    
660     c-----------------------------------------------------------
661     C ADD TERMS
662    
663     c Nutrients
664     c Sum of fast recycling, decay of sinking POM, and decay of DOM,
665     c less uptake, (less denitrification).
666    
667     G_PO4(i,j,k) = -P_uptake(i,j,k) + P_recycle(i,j,k)
668     & + (1. _d 0 - phi_DOM) * (P_reminp(i,j,k)
669     & + P_remindvm(i,j,k)) + DOP_remin(i,j,k)
670    
671     G_NO3(i,j,k) = -N_uptake(i,j,k)
672     IF (PTR_O2(i,j,k) .lt. oxic_min) THEN
673     c Anoxic
674     G_NO3(i,j,k) = G_NO3(i,j,k)
675     & - N_den_pelag(i,j,k) - N_den_benthic(i,j,k)
676     ELSE
677     c Oxic
678     G_NO3(i,j,k) = G_NO3(i,j,k)
679     & + N_recycle(i,j,k) + (1. _d 0 - phi_DOM) *
680     & (N_reminp(i,j,k) + N_remindvm(i,j,k))
681     & + DON_remin(i,j,k)
682     ENDIF
683    
684     cxxxx check
685     NCP(i,j,k) = (-G_NO3(i,j,k) + N_fix(i,j,k)) * CtoN
686    
687     c Iron
688     c remineralization, sediments and adsorption are all bundled into
689     c Fe_reminsum
690    
691     G_FE(i,j,k) = -Fe_uptake(i,j,k) + Fe_reminsum(i,j,k)
692     & + Fe_remindvm(i,j,k) + Fe_recycle(i,j,k)
693    
694     c Dissolved Organic Matter
695     c A fraction of POM remineralization goes into dissolved pools.
696    
697     G_DON(i,j,k) = DON_prod(i,j,k) + phi_DOM *
698     & (N_reminp(i,j,k) + N_remindvm(i,j,k))
699     & - DON_remin(i,j,k)
700    
701     G_DOP(i,j,k) = DOP_prod(i,j,k) + phi_DOM *
702     & (P_reminp(i,j,k) + P_remindvm(i,j,k))
703     & - DOP_remin(i,j,k)
704    
705     c Oxygen:
706     c Assuming constant O2:N ratio in terms of oxidant required per mol of organic N.
707     c This implies a constant stoichiometry of C:N and H:N (where H is reduced, organic H).
708     c Because the N provided by N2 fixation is reduced from N2, rather than NO3-, the
709     c o2_2_n_fix is slightly less than the NO3- based ratio (by 1.25 mol O2/ mol N).
710     c Account for the organic matter respired through benthic denitrification by
711     c subtracting 5/4 times the benthic denitrification NO3 utilization rate from
712     c the overall oxygen consumption.
713    
714     G_O2(i,j,k) = O2_prod(i,j,k)
715     c If oxic
716     IF (PTR_O2(i,j,k) .gt. oxic_min) THEN
717     G_O2(i,j,k) = G_O2(i,j,k)
718     & -O2toN * ((1. _d 0 - phi_DOM) *
719     & (N_reminp(i,j,k) + N_remindvm(i,j,k))
720     & + DON_remin(i,j,k) + N_recycle(i,j,k))
721     c If anoxic but NO3 concentration is very low
722     c (generate negative O2; proxy for HS-).
723     ELSEIF (PTR_NO3(i,j,k) .lt. oxic_min) THEN
724     G_O2(i,j,k) = G_O2(i,j,k)
725     & -O2toN * ((1. _d 0 - phi_DOM) *
726     & (N_reminp(i,j,k) + N_remindvm(i,j,k))
727     & + DON_remin(i,j,k) + N_recycle(i,j,k))
728     & + N_den_benthic(i,j,k) * 1.25 _d 0
729     ENDIF
730    
731     G_CaCO3(i,j,k) = CaCO3_diss(i,j,k) - CaCO3_uptake(i,j,k)
732     cxx sediments not accounted for
733 mmazloff 1.1
734     ENDIF
735 mmazloff 1.2
736 mmazloff 1.1 ENDDO
737     ENDDO
738     ENDDO
739    
740 mmazloff 1.2
741 mmazloff 1.1 c ---------------------------------------------------------------------
742    
743     #ifdef ALLOW_DIAGNOSTICS
744     IF ( useDiagnostics ) THEN
745 mmazloff 1.2
746     c 3d global variables
747     CALL DIAGNOSTICS_FILL(P_sm,'BLGPSM ',0,Nr,1,bi,bj,myThid)
748     CALL DIAGNOSTICS_FILL(P_lg,'BLGPLG ',0,Nr,1,bi,bj,myThid)
749     CALL DIAGNOSTICS_FILL(P_diaz,'BLGPDIA ',0,Nr,1,bi,bj,myThid)
750     CALL DIAGNOSTICS_FILL(chl,'BLGCHL ',0,Nr,1,bi,bj,myThid)
751     CALL DIAGNOSTICS_FILL(irr_mem,'BLGIMEM ',0,Nr,1,bi,bj,myThid)
752     c 3d local variables
753     CALL DIAGNOSTICS_FILL(irrk,'BLGIRRK ',0,Nr,2,bi,bj,myThid)
754     CALL DIAGNOSTICS_FILL(irr_eff,'BLGIEFF ',0,Nr,2,bi,bj,myThid)
755     CALL DIAGNOSTICS_FILL(Fe_lim,'BLGFELIM',0,Nr,2,bi,bj,myThid)
756     CALL DIAGNOSTICS_FILL(NO3_lim,'BLGNLIM ',0,Nr,2,bi,bj,myThid)
757     CALL DIAGNOSTICS_FILL(POC_flux,'BLGPOCF ',0,Nr,2,bi,bj,myThid)
758     CALL DIAGNOSTICS_FILL(NPP,'BLGNPP ',0,Nr,2,bi,bj,myThid)
759     CALL DIAGNOSTICS_FILL(NCP,'BLGNCP ',0,Nr,2,bi,bj,myThid)
760     c CALL DIAGNOSTICS_FILL(Fe_ads_inorg,'BLGFEAI',0,Nr,2,bi,bj,
761     c & myThid)
762     c CALL DIAGNOSTICS_FILL(Fe_dvm,'BLGFEDVM',0,Nr,2,bi,bj,myThid)
763     c CALL DIAGNOSTICS_FILL(Fe_sed,'BLGFESED',0,Nr,2,bi,bj,myThid)
764     CALL DIAGNOSTICS_FILL(Fe_spm,'BLGFESPM',0,Nr,2,bi,bj,myThid)
765     CALL DIAGNOSTICS_FILL(Fe_recycle,'BLGFEREC',0,Nr,2,bi,bj,
766     & myThid)
767     CALL DIAGNOSTICS_FILL(Fe_remindvm,'BLGFERD',0,Nr,2,bi,bj,
768     & myThid)
769     c CALL DIAGNOSTICS_FILL(Fe_reminp,'BLGFEREM',0,Nr,2,bi,bj,myThid)
770     CALL DIAGNOSTICS_FILL(Fe_reminsum,'BLGFEREM',0,Nr,2,bi,bj,
771     & myThid)
772     CALL DIAGNOSTICS_FILL(Fe_uptake,'BLGFEUP ',0,Nr,2,bi,bj,myThid)
773     CALL DIAGNOSTICS_FILL(N_den_benthic,'BLGNDENB',0,Nr,2,bi,bj,
774     & myThid)
775     CALL DIAGNOSTICS_FILL(N_den_pelag,'BLGNDENP',0,Nr,2,bi,bj,
776     & myThid)
777     CALL DIAGNOSTICS_FILL(N_dvm,'BLGNDVM ',0,Nr,2,bi,bj,myThid)
778     CALL DIAGNOSTICS_FILL(N_fix,'BLGNFIX ',0,Nr,2,bi,bj,myThid)
779     CALL DIAGNOSTICS_FILL(DON_prod,'BLGDONP ',0,Nr,2,bi,bj,myThid)
780     CALL DIAGNOSTICS_FILL(N_spm,'BLGNSPM ',0,Nr,2,bi,bj,myThid)
781     CALL DIAGNOSTICS_FILL(N_recycle,'BLGNREC ',0,Nr,2,bi,bj,myThid)
782     CALL DIAGNOSTICS_FILL(N_remindvm,'BLGNRD ',0,Nr,2,bi,bj,myThid)
783     CALL DIAGNOSTICS_FILL(N_reminp,'BLGNREM ',0,Nr,2,bi,bj,myThid)
784     CALL DIAGNOSTICS_FILL(N_uptake,'BLGNUP ',0,Nr,2,bi,bj,myThid)
785     CALL DIAGNOSTICS_FILL(P_dvm,'BLGPDVM ',0,Nr,2,bi,bj,myThid)
786     CALL DIAGNOSTICS_FILL(DOP_prod,'BLGDOPP ',0,Nr,2,bi,bj,myThid)
787     CALL DIAGNOSTICS_FILL(P_spm,'BLGPSPM ',0,Nr,2,bi,bj,myThid)
788     CALL DIAGNOSTICS_FILL(P_recycle,'BLGPREC ',0,Nr,2,bi,bj,myThid)
789     CALL DIAGNOSTICS_FILL(P_remindvm,'BLGPRD ',0,Nr,2,bi,bj,myThid)
790     CALL DIAGNOSTICS_FILL(P_reminp,'BLGPREM ',0,Nr,2,bi,bj,myThid)
791     CALL DIAGNOSTICS_FILL(P_uptake,'BLGPUP ',0,Nr,2,bi,bj,myThid)
792     c CALL DIAGNOSTICS_FILL(dvm,'BLGDVM ',0,Nr,2,bi,bj,myThid)
793     CALL DIAGNOSTICS_FILL(mu,'BLGMU ',0,Nr,2,bi,bj,myThid)
794     CALL DIAGNOSTICS_FILL(mu_diaz,'BLGMUDIA',0,Nr,2,bi,bj,myThid)
795     c 2d local variables
796     c CALL DIAGNOSTICS_FILL(Fe_burial,'BLGFEBUR',0,1,2,bi,bj,myThid)
797     c CALL DIAGNOSTICS_FILL(NO3_sed,'BLGNSED ',0,1,2,bi,bj,myThid)
798     c CALL DIAGNOSTICS_FILL(PO4_sed,'BLGPSED ',0,1,2,bi,bj,myThid)
799     c CALL DIAGNOSTICS_FILL(O2_sed,'BLGO2SED',0,1,2,bi,bj,myThid)
800     c these variables are currently 1d, could be 3d for diagnostics
801     c (or diag_fill could be called inside loop - which is faster?)
802     c CALL DIAGNOSTICS_FILL(frac_exp,'BLGFEXP ',0,Nr,2,bi,bj,myThid)
803     c CALL DIAGNOSTICS_FILL(irr_mix,'BLGIRRM ',0,Nr,2,bi,bj,myThid)
804     c CALL DIAGNOSTICS_FILL(irrk,'BLGIRRK ',0,Nr,2,bi,bj,myThid)
805     c CALL DIAGNOSTICS_FILL(kFe_eq_lig,'BLGPUP ',0,Nr,2,bi,bj,myThid)
806     c CALL DIAGNOSTICS_FILL(mu,'BLGMU ',0,Nr,2,bi,bj,myThid)
807     c CALL DIAGNOSTICS_FILL(mu_diaz,'BLGMUDIA',0,Nr,2,bi,bj,myThid)
808     c CALL DIAGNOSTICS_FILL(PtoN,'BLGP2N ',0,Nr,2,bi,bj,myThid)
809     c CALL DIAGNOSTICS_FILL(FetoN,'BLGFE2N ',0,Nr,2,bi,bj,myThid)
810     c CALL DIAGNOSTICS_FILL(Pc_m,'BLGPCM ',0,Nr,2,bi,bj,myThid)
811     c CALL DIAGNOSTICS_FILL(Pc_m_diaz,'BLGPCMD',0,Nr,2,bi,bj,myThid)
812     c CALL DIAGNOSTICS_FILL(theta_Fe,'BLGTHETA',0,Nr,2,bi,bj,myThid)
813     c CALL DIAGNOSTICS_FILL(theta_Fe_max,'BLGTHETM',0,Nr,2,bi,bj,myThid)
814     c CALL DIAGNOSTICS_FILL(wsink,'BLGWSINK',0,Nr,2,bi,bj,myThid)
815     c CALL DIAGNOSTICS_FILL(zremin,'BLGZREM ',0,Nr,2,bi,bj,myThid)
816     c CALL DIAGNOSTICS_FILL(z_dvm,'BLGZDVM ',0,Nr,2,bi,bj,myThid)
817    
818 mmazloff 1.1 ENDIF
819     #endif /* ALLOW_DIAGNOSTICS */
820    
821     #endif /* ALLOW_BLING */
822    
823     RETURN
824 mmazloff 1.2
825 mmazloff 1.1 END

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