/[MITgcm]/MITgcm/pkg/dic/dic_biotic_forcing.F
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Revision 1.19 - (hide annotations) (download)
Wed Dec 12 01:41:26 2007 UTC (16 years, 6 months ago) by dfer
Branch: MAIN
CVS Tags: checkpoint59m, checkpoint59l, checkpoint59o, checkpoint59n
Changes since 1.18: +7 -3 lines
Add to DIC_NO_NEG macro: do not allow for negative DOP remineralization.

1 dfer 1.19 C $Header: /u/gcmpack/MITgcm/pkg/dic/dic_biotic_forcing.F,v 1.18 2007/10/29 16:49:49 dfer Exp $
2 jmc 1.7 C $Name: $
3    
4 edhill 1.4 #include "DIC_OPTIONS.h"
5 stephd 1.1 #include "GCHEM_OPTIONS.h"
6    
7 stephd 1.6 CBOP
8     C !ROUTINE: DIC_BIOTIC_FORCING
9    
10     C !INTERFACE: ==========================================================
11 stephd 1.1 SUBROUTINE DIC_BIOTIC_FORCING( PTR_DIC, PTR_ALK, PTR_PO4,
12 stephd 1.14 & PTR_DOP,
13     #ifdef ALLOW_O2
14     & PTR_O2,
15     #endif
16 stephd 1.1 #ifdef ALLOW_FE
17     & PTR_FE,
18     #endif
19     & bi,bj,imin,imax,jmin,jmax,
20     & myIter,myTime,myThid)
21    
22 stephd 1.6 C !DESCRIPTION:
23     C updates all the tracers for the effects of air-sea exchange, biological
24     c activity and remineralization
25    
26     C !USES: ===============================================================
27 stephd 1.1 IMPLICIT NONE
28     #include "SIZE.h"
29     #include "DYNVARS.h"
30     #include "EEPARAMS.h"
31     #include "PARAMS.h"
32     #include "GRID.h"
33     #include "DIC_BIOTIC.h"
34     #include "DIC_ABIOTIC.h"
35    
36 stephd 1.6 C !INPUT PARAMETERS: ===================================================
37     C myThid :: thread number
38     C myIter :: current timestep
39     C myTime :: current time
40     C PTR_DIC :: dissolced inorganic carbon
41     C PTR_ALK :: alkalinity
42     C PTR_PO4 :: phosphate
43     c PTR_DOP :: dissolve organic phosphurous
44     c PTR_O2 :: oxygen
45     C PTR_FE :: iron
46 stephd 1.1 INTEGER myIter
47     _RL myTime
48     INTEGER myThid
49     _RL PTR_DIC(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
50     _RL PTR_ALK(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
51     _RL PTR_PO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
52     _RL PTR_DOP(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
53 stephd 1.14 #ifdef ALLOW_O2
54 stephd 1.1 _RL PTR_O2(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
55 stephd 1.14 #endif
56 stephd 1.1 #ifdef ALLOW_FE
57     _RL PTR_FE(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
58     #endif
59     INTEGER bi, bj, imin, imax, jmin, jmax
60    
61     #ifdef ALLOW_PTRACERS
62     #ifdef DIC_BIOTIC
63 stephd 1.6
64     C !LOCAL VARIABLES: ====================================================
65     C i,j,k :: loop indices
66     C G* :: tendency term for the tracers
67     C SURA :: tendency of alkalinity due to freshwater
68     C SURC :: tendency of DIC due to air-sea exchange
69     C and virtual flux
70     C SURO :: tendency of O2 due to air-sea exchange
71 dfer 1.16 C GPO4 :: tendency of PO4 due to biological productivity,
72 stephd 1.6 C exchange with DOP pool and reminerization
73     C CAR :: carbonate changes due to biological
74 dfer 1.18 C productivity and remineralization
75 dfer 1.15 C BIOac :: biological productivity
76 dfer 1.18 C RDOP :: DOP sink due to remineralization
77     C pflux :: changes to PO4 due to flux and remineralization
78     C CAR_S :: carbonate sink
79     C cflux :: carbonate changes due to flux and remineralization
80     C freefe :: iron not bound to ligand
81 stephd 1.1 _RL GDIC(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
82     _RL GALK(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
83     _RL GPO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
84     _RL GDOP(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
85     _RL SURA(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
86     _RL SURC(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
87     _RL SURO(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
88     _RL CAR(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
89 dfer 1.15 _RL BIOac(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
90 dfer 1.18 _RL RDOP(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
91 stephd 1.1 _RL pflux(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
92 stephd 1.13 _RL exportflux(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
93 dfer 1.18 _RL CAR_S(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
94 stephd 1.1 _RL cflux(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
95 stephd 1.14 #ifdef ALLOW_O2
96     _RL GO2(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
97     #endif
98 stephd 1.1 #ifdef ALLOW_FE
99     _RL GFE(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
100     _RL freefe(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
101     #endif
102     INTEGER I,J,k
103 stephd 1.8 INTEGER nCALCITEstep
104 stephd 1.6 CEOP
105 stephd 1.11 jmin=1
106     jmax=sNy
107     imin=1
108     imax=sNx
109 stephd 1.1
110     DO k=1,Nr
111     DO j=1-OLy,sNy+OLy
112     DO i=1-OLx,sNx+OLx
113 dfer 1.18 RDOP(i,j,k) =0. _d 0
114 dfer 1.15 GDIC(i,j,k) =0. _d 0
115     GALK(i,j,k) =0. _d 0
116     GPO4(i,j,k) =0. _d 0
117     GDOP(i,j,k) =0. _d 0
118     CAR(i,j,k) =0. _d 0
119     BIOac(i,j,k) =0. _d 0
120     pflux(i,j,k) =0. _d 0
121     exportflux(i,j,k)=0. _d 0
122     cflux(i,j,k) =0. _d 0
123 dfer 1.18 CAR_S(i,j,k) =0. _d 0
124 stephd 1.14 #ifdef ALLOW_O2
125 dfer 1.15 GO2(i,j,k) =0. _d 0
126 stephd 1.14 #endif
127 stephd 1.1 #ifdef ALLOW_FE
128 dfer 1.15 GFE(i,j,k) =0. _d 0
129     freefe(i,j,k) =0. _d 0
130 stephd 1.1 #endif
131     ENDDO
132     ENDDO
133     ENDDO
134 dfer 1.16 DO j=1-OLy,sNy+OLy
135     DO i=1-OLx,sNx+OLx
136     SURA(i,j) =0. _d 0
137     SURC(i,j) =0. _d 0
138     SURO(i,j) =0. _d 0
139     ENDDO
140     ENDDO
141 stephd 1.1
142     c carbon air-sea interaction
143 stephd 1.12 CALL DIC_SURFFORCING( PTR_DIC, PTR_ALK, PTR_PO4, SURC,
144 stephd 1.1 & bi,bj,imin,imax,jmin,jmax,
145     & myIter,myTime,myThid)
146    
147     c alkalinity air-sea interaction
148     CALL ALK_SURFFORCING( PTR_ALK, SURA,
149     & bi,bj,imin,imax,jmin,jmax,
150     & myIter,myTime,myThid)
151    
152 stephd 1.14 #ifdef ALLOW_O2
153     c oxygen air-sea interaction
154 stephd 1.1 CALL O2_SURFFORCING( PTR_O2, SURO,
155     & bi,bj,imin,imax,jmin,jmax,
156     & myIter,myTime,myThid)
157 stephd 1.14 #endif
158 stephd 1.1
159     #ifdef ALLOW_FE
160     c find free iron
161     call fe_chem(bi,bj,iMin,iMax,jMin,jMax, PTR_FE, freefe,
162     & myIter, mythid)
163     #endif
164    
165    
166     c biological activity
167     CALL BIO_EXPORT( PTR_PO4 ,
168     #ifdef ALLOW_FE
169     I PTR_FE,
170     #endif
171 dfer 1.15 I BIOac,
172 stephd 1.1 I bi,bj,imin,imax,jmin,jmax,
173     I myIter,myTime,myThid)
174    
175     c flux of po4 from layers with biological activity
176 dfer 1.15 CALL PHOS_FLUX( BIOac, pflux, exportflux,
177 stephd 1.1 & bi,bj,imin,imax,jmin,jmax,
178     & myIter,myTime,myThid)
179    
180 dfer 1.18 C- Carbonate sink
181     DO k=1,Nr
182     DO j=jmin,jmax
183     DO i=imin,imax
184     CAR_S(i,j,k)=BIOac(i,j,k)*R_CP*rain_ratio(i,j,bi,bj)*
185     & (1. _d 0-DOPfraction)
186     ENDDO
187     ENDDO
188     ENDDO
189    
190 stephd 1.1 c carbonate
191 stephd 1.8 #ifdef CAR_DISS
192     c dissolution only below saturation horizon
193     c code following methid by Karsten Friis
194     nCALCITEstep = 3600
195     IF(myIter .lt. (nIter0+5) .or.
196     & mod(myIter,nCALCITEstep) .eq. 0)THEN
197 stephd 1.12 CALL CALCITE_SATURATION(PTR_DIC, PTR_ALK, PTR_PO4,
198 stephd 1.8 I bi,bj,imin,imax,jmin,jmax,
199     I myIter,myTime,myThid)
200     ENDIF
201     c
202 dfer 1.15 CALL CAR_FLUX_OMEGA_TOP( BIOac, cflux,
203 stephd 1.8 & bi,bj,imin,imax,jmin,jmax,
204     & myIter,myTime,myThid)
205     #else
206     c old OCMIP way
207 dfer 1.18 CALL CAR_FLUX( CAR_S, cflux,
208 stephd 1.1 & bi,bj,imin,imax,jmin,jmax,
209     & myIter,myTime,myThid)
210 stephd 1.8 #endif
211 stephd 1.1
212     c add all tendencies for PO4, DOP, ALK, DIC
213     DO k=1,Nr
214 stephd 1.11 DO j=jmin,jmax
215     DO i=imin,imax
216 dfer 1.19 #ifdef DIC_NO_NEG
217     RDOP(i,j,k)= MAX(maskC(i,j,k,bi,bj)*KDOPRemin*PTR_DOP(i,j,k)
218     & ,0. _d 0)
219     #else
220     RDOP(i,j,k)= maskC(i,j,k,bi,bj)*KDOPRemin*PTR_DOP(i,j,k)
221     #endif
222 dfer 1.18 GPO4(i,j,k)=-BIOac(i,j,k)+pflux(i,j,k) + RDOP(i,j,k)
223 dfer 1.16
224 dfer 1.18 car(i,j,k) = cflux(i,j,k) - CAR_S(i,j,k)
225 dfer 1.16
226 dfer 1.18 GDOP(i,j,k)=+BIOac(i,j,k)*DOPfraction - RDOP(i,j,k)
227 dfer 1.16
228     GALK(i,j,k)=+2. _d 0 *car(i,j,k)-R_NP*GPO4(i,j,k)
229    
230     GDIC(i,j,k)=car(i,j,k)+R_CP*GPO4(i,j,k)
231    
232 stephd 1.14 #ifdef ALLOW_O2
233 dfer 1.16 if (PTR_O2(i,j,k).GT.O2crit) then
234     GO2(i,j,k)= R_OP*GPO4(i,j,k)
235 stephd 1.1 else
236 dfer 1.16 GO2(i,j,k)= 0. _d 0
237 stephd 1.1 endif
238 stephd 1.14 #endif
239 stephd 1.1 #ifdef ALLOW_FE
240 dfer 1.18 GFE(i,j,k) = R_FeP*GPO4(i,j,k)
241     & -Kscav*freefe(i,j,k)
242 stephd 1.1 #endif
243 dfer 1.16 ENDDO
244     ENDDO
245     ENDDO
246    
247     DO j=jmin,jmax
248     DO i=imin,imax
249 stephd 1.1 GALK(i,j,1)=GALK(i,j,1)+SURA(i,j)
250     GDIC(i,j,1)=GDIC(i,j,1)+SURC(i,j)
251 stephd 1.14 #ifdef ALLOW_O2
252 dfer 1.16 GO2(i,j,1) =GO2(i,j,1)+SURO(i,j)
253 stephd 1.14 #endif
254 stephd 1.1 #ifdef ALLOW_FE
255     GFE(i,j,1)=GFE(i,j,1)+alpfe*
256 stephd 1.9 & InputFe(i,j,bi,bj)*recip_drF(1)
257     & *recip_hFacC(i,j,1,bi,bj)
258 stephd 1.1 #endif
259     ENDDO
260     ENDDO
261    
262    
263     C update
264     DO k=1,Nr
265 stephd 1.11 DO j=jmin,jmax
266     DO i=imin,imax
267 stephd 1.1 PTR_DIC(i,j,k)=
268 jmc 1.7 & PTR_DIC(i,j,k)+GDIC(i,j,k)*dTtracerLev(k)
269 stephd 1.1 PTR_ALK(i,j,k)=
270 jmc 1.7 & PTR_ALK(i,j,k)+GALK(i,j,k)*dTtracerLev(k)
271 stephd 1.1 PTR_PO4(i,j,k)=
272 jmc 1.7 & PTR_PO4(i,j,k)+GPO4(i,j,k)*dTtracerLev(k)
273 stephd 1.1 PTR_DOP(i,j,k)=
274 jmc 1.7 & PTR_DOP(i,j,k)+GDOP(i,j,k)*dTtracerLev(k)
275 stephd 1.14 #ifdef ALLOW_O2
276 stephd 1.1 PTR_O2(i,j,k)=
277 jmc 1.7 & PTR_O2(i,j,k)+GO2(i,j,k)*dTtracerLev(k)
278 stephd 1.14 #endif
279 stephd 1.1 #ifdef ALLOW_FE
280     PTR_FE(i,j,k)=
281 jmc 1.7 & PTR_FE(i,j,k)+GFE(i,j,k)*dTtracerLev(k)
282 stephd 1.1 #endif
283     ENDDO
284     ENDDO
285     ENDDO
286    
287 stephd 1.10 #ifdef ALLOW_FE
288     #ifdef MINFE
289     c find free iron and get rid of insoluble part
290     call fe_chem(bi,bj,iMin,iMax,jMin,jMax, PTR_FE, freefe,
291     & myIter, mythid)
292     #endif
293     #endif
294    
295    
296 stephd 1.1 #ifdef ALLOW_TIMEAVE
297     c save averages
298 dfer 1.15 IF ( taveFreq.GT.0. ) THEN
299 stephd 1.1 DO k=1,Nr
300 stephd 1.11 DO j=jmin,jmax
301     DO i=imin,imax
302 dfer 1.15 BIOave(i,j,k,bi,bj) =BIOave(i,j,k,bi,bj)+
303     & BIOac(i,j,k)*deltaTclock
304     CARave(i,j,k,bi,bj) =CARave(i,j,k,bi,bj)+
305     & CAR(i,j,k)*deltaTclock
306     OmegaCave(i,j,k,bi,bj)=OmegaCave(i,j,k,bi,bj)+
307     & OmegaC(i,j,k,bi,bj)*deltaTclock
308     pfluxave(i,j,k,bi,bj) =pfluxave(i,j,k,bi,bj) +
309     & pflux(i,j,k)*deltaTclock
310     epfluxave(i,j,k,bi,bj)=epfluxave(i,j,k,bi,bj) +
311     & exportflux(i,j,k)*deltaTclock
312     cfluxave(i,j,k,bi,bj) =cfluxave(i,j,k,bi,bj) +
313     & cflux(i,j,k)*deltaTclock
314     ENDDO
315     ENDDO
316     ENDDO
317     DO j=jmin,jmax
318     DO i=imin,imax
319     SURave(i,j,bi,bj) =SURave(i,j,bi,bj)+
320     & SURC(i,j)*deltaTclock
321 stephd 1.14 #ifdef ALLOW_O2
322 dfer 1.15 SUROave(i,j,bi,bj) =SUROave(i,j,bi,bj)+
323     & SURO(i,j)*deltaTclock
324 stephd 1.14 #endif
325 dfer 1.15 pCO2ave(i,j,bi,bj) =pCO2ave(i,j,bi,bj)+
326     & pCO2(i,j,bi,bj)*deltaTclock
327     pHave(i,j,bi,bj) =pHave(i,j,bi,bj)+
328     & pH(i,j,bi,bj)*deltaTclock
329 stephd 1.2 fluxCO2ave(i,j,bi,bj)=fluxCO2ave(i,j,bi,bj)+
330     & fluxCO2(i,j,bi,bj)*deltaTclock
331 stephd 1.1 ENDDO
332     ENDDO
333     do k=1,Nr
334     dic_timeave(bi,bj,k)=dic_timeave(bi,bj,k)+deltaTclock
335     enddo
336 dfer 1.15 ENDIF
337     #endif /* ALLOW_TIMEAVE*/
338    
339     C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
340    
341     #ifdef ALLOW_DIAGNOSTICS
342    
343     IF ( useDiagnostics ) THEN
344    
345     CALL DIAGNOSTICS_FILL(BIOac ,'DICBIOA ',0,Nr,2,bi,bj,myThid)
346     CALL DIAGNOSTICS_FILL(CAR ,'DICCARB ',0,Nr,2,bi,bj,myThid)
347     CALL DIAGNOSTICS_FILL(pCO2 ,'DICPCO2 ',0,1 ,1,bi,bj,myThid)
348     CALL DIAGNOSTICS_FILL(fluxCO2,'DICCFLX ',0,1 ,1,bi,bj,myThid)
349     CALL DIAGNOSTICS_FILL(pH ,'DICPHAV ',0,1 ,1,bi,bj,myThid)
350     CALL DIAGNOSTICS_FILL(SURC ,'DICTFLX ',0,1 ,2,bi,bj,myThid)
351     #ifdef ALLOW_O2
352     CALL DIAGNOSTICS_FILL(SURO ,'DICOFLX ',0,1 ,2,bi,bj,myThid)
353 stephd 1.1 #endif
354    
355 dfer 1.15 ENDIF
356    
357     #endif /* ALLOW_DIAGNOSTICS */
358    
359     #endif /* DIC_BIOTIC */
360     #endif /* ALLOW_PTRACERS */
361 stephd 1.1
362     c
363     RETURN
364     END

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