/[MITgcm]/MITgcm/pkg/dic/dic_biotic_forcing.F
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Contents of /MITgcm/pkg/dic/dic_biotic_forcing.F

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Revision 1.6 - (show annotations) (download)
Thu Feb 12 16:11:46 2004 UTC (20 years, 3 months ago) by stephd
Branch: MAIN
CVS Tags: checkpoint52l_pre, hrcube4, checkpoint52n_post, checkpoint52j_post, checkpoint53d_post, checkpoint54a_pre, checkpoint55c_post, checkpoint54e_post, checkpoint54a_post, checkpoint53c_post, checkpoint55d_pre, checkpoint55j_post, checkpoint56b_post, checkpoint52l_post, checkpoint55h_post, checkpoint52k_post, checkpoint54b_post, checkpoint53b_pre, checkpoint55b_post, checkpoint54d_post, checkpoint56c_post, checkpoint52m_post, checkpoint55, checkpoint53a_post, checkpoint54, checkpoint54f_post, checkpoint53b_post, checkpoint55g_post, checkpoint55f_post, checkpoint55i_post, checkpoint56, checkpoint53, checkpoint53g_post, hrcube5, checkpoint55e_post, checkpoint52j_pre, checkpoint53f_post, checkpoint55a_post, checkpoint53d_pre, checkpoint54c_post, checkpoint56a_post, checkpoint55d_post
Changes since 1.5: +36 -18 lines
o clean up and add extra documentation

1 #include "DIC_OPTIONS.h"
2 #include "GCHEM_OPTIONS.h"
3
4 CBOP
5 C !ROUTINE: DIC_BIOTIC_FORCING
6
7 C !INTERFACE: ==========================================================
8 SUBROUTINE DIC_BIOTIC_FORCING( PTR_DIC, PTR_ALK, PTR_PO4,
9 & PTR_DOP, PTR_O2,
10 #ifdef ALLOW_FE
11 & PTR_FE,
12 #endif
13 & bi,bj,imin,imax,jmin,jmax,
14 & myIter,myTime,myThid)
15
16 C !DESCRIPTION:
17 C updates all the tracers for the effects of air-sea exchange, biological
18 c activity and remineralization
19
20 C !USES: ===============================================================
21 IMPLICIT NONE
22 #include "SIZE.h"
23 #include "DYNVARS.h"
24 #include "EEPARAMS.h"
25 #include "PARAMS.h"
26 #include "GRID.h"
27 #include "DIC_BIOTIC.h"
28 #include "DIC_ABIOTIC.h"
29
30 C !INPUT PARAMETERS: ===================================================
31 C myThid :: thread number
32 C myIter :: current timestep
33 C myTime :: current time
34 C PTR_DIC :: dissolced inorganic carbon
35 C PTR_ALK :: alkalinity
36 C PTR_PO4 :: phosphate
37 c PTR_DOP :: dissolve organic phosphurous
38 c PTR_O2 :: oxygen
39 C PTR_FE :: iron
40 INTEGER myIter
41 _RL myTime
42 INTEGER myThid
43 _RL PTR_DIC(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
44 _RL PTR_ALK(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
45 _RL PTR_PO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
46 _RL PTR_DOP(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
47 _RL PTR_O2(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
48 #ifdef ALLOW_FE
49 _RL PTR_FE(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
50 #endif
51 INTEGER bi, bj, imin, imax, jmin, jmax
52
53 #ifdef ALLOW_PTRACERS
54 #ifdef DIC_BIOTIC
55
56 C !LOCAL VARIABLES: ====================================================
57 C i,j,k :: loop indices
58 C G* :: tendency term for the tracers
59 C SURA :: tendency of alkalinity due to freshwater
60 C SURC :: tendency of DIC due to air-sea exchange
61 C and virtual flux
62 C SURO :: tendency of O2 due to air-sea exchange
63 C BIO :: tendency of PO4 due to biological productivity,
64 C exchange with DOP pool and reminerization
65 C CAR :: carbonate changes due to biological
66 C productivity and reminerization
67 C bioac :: biological productivity
68 C pflux :: changes to PO4 due to flux and reminerlization
69 c cflux :: carbonate changes due to flux and reminerlization
70 c freefe :: iron not bound to ligand
71 _RL GDIC(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
72 _RL GALK(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
73 _RL GPO4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
74 _RL GDOP(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
75 _RL GO2(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
76 _RL SURA(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
77 _RL SURC(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
78 _RL SURO(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
79 _RL BIO(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
80 _RL CAR(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
81 _RL bioac(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
82 _RL pflux(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
83 _RL cflux(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
84 #ifdef ALLOW_FE
85 _RL GFE(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
86 _RL freefe(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
87 #endif
88 INTEGER I,J,k
89 CEOP
90
91 DO k=1,Nr
92 DO j=1-OLy,sNy+OLy
93 DO i=1-OLx,sNx+OLx
94 GDIC(i,j,k)=0.d0
95 GALK(i,j,k)=0.d0
96 GPO4(i,j,k)=0.d0
97 GDOP(i,j,k)=0.d0
98 GO2(i,j,k)=0.d0
99 SURA(i,j)=0.d0
100 SURC(i,j)=0.d0
101 CAR(i,j,k)=0.d0
102 BIO(i,j,k)=0.d0
103 bioac(i,j,k)=0.d0
104 pflux(i,j,k)=0.d0
105 cflux(i,j,k)=0.d0
106 #ifdef ALLOW_FE
107 GFE(i,j,k)=0.d0
108 freefe(i,j,k)=0.d0
109 #endif
110 ENDDO
111 ENDDO
112 ENDDO
113
114 c carbon air-sea interaction
115 CALL DIC_SURFFORCING( PTR_DIC, SURC,
116 & bi,bj,imin,imax,jmin,jmax,
117 & myIter,myTime,myThid)
118
119 c alkalinity air-sea interaction
120 CALL ALK_SURFFORCING( PTR_ALK, SURA,
121 & bi,bj,imin,imax,jmin,jmax,
122 & myIter,myTime,myThid)
123
124 c carbon air-sea interaction
125 CALL O2_SURFFORCING( PTR_O2, SURO,
126 & bi,bj,imin,imax,jmin,jmax,
127 & myIter,myTime,myThid)
128
129 #ifdef ALLOW_FE
130 c find free iron
131 call fe_chem(bi,bj,iMin,iMax,jMin,jMax, PTR_FE, freefe,
132 & myIter, mythid)
133 #endif
134
135
136 c biological activity
137 CALL BIO_EXPORT( PTR_PO4 ,
138 #ifdef ALLOW_FE
139 I PTR_FE,
140 #endif
141 I bioac,
142 I bi,bj,imin,imax,jmin,jmax,
143 I myIter,myTime,myThid)
144
145 c flux of po4 from layers with biological activity
146 CALL PHOS_FLUX( bioac, pflux,
147 & bi,bj,imin,imax,jmin,jmax,
148 & myIter,myTime,myThid)
149
150 c carbonate
151 CALL CAR_FLUX( bioac, cflux,
152 & bi,bj,imin,imax,jmin,jmax,
153 & myIter,myTime,myThid)
154
155 c add all tendencies for PO4, DOP, ALK, DIC
156 DO k=1,Nr
157 DO j=1-OLy,sNy+OLy
158 DO i=1-OLx,sNx+OLx
159 bio(i,j,k)=-bioac(i,j,k)+pflux(i,j,k)
160 & + maskC(i,j,k,bi,bj)*Kdopremin*PTR_DOP(i,j,k)
161 car(i,j,k)=-bioac(i,j,k)* R_cp*rain_ratio(i,j,bi,bj)*
162 & (1.0-DOPfraction)+cflux(i,j,k)
163 GPO4(i,j,k)=bio(i,j,k)
164 GDOP(i,j,k)=+bioac(i,j,k)*DOPfraction
165 & - maskC(i,j,k,bi,bj)*Kdopremin*PTR_DOP(i,j,k)
166 GALK(i,j,k)=+2.d0*car(i,j,k)-R_NP*bio(i,j,k)
167 GDIC(i,j,k)=car(i,j,k)+R_CP*bio(i,j,k)
168 if (PTR_O2(i,j,k).gt.o2crit) then
169 GO2(i,j,k)=R_OP*bio(i,j,k)
170 else
171 GO2(i,j,k)=0.d0
172 endif
173 #ifdef ALLOW_FE
174 GFE(i,j,k)=R_FeP*bio(i,j,k)
175 & -Kscav*freefe(i,j,k)
176 #endif
177 IF (K.eq.1) then
178 GALK(i,j,1)=GALK(i,j,1)+SURA(i,j)
179 GDIC(i,j,1)=GDIC(i,j,1)+SURC(i,j)
180 GO2(i,j,1)=GO2(i,j,1)+SURO(i,j)
181 #ifdef ALLOW_FE
182 GFE(i,j,1)=GFE(i,j,1)+alpfe*
183 & InputFe(i,j,bi,bj)/drF(1)
184 #endif
185 ENDIF
186 ENDDO
187 ENDDO
188 ENDDO
189
190
191 C update
192 DO k=1,Nr
193 DO j=1-OLy,sNy+OLy
194 DO i=1-OLx,sNx+OLx
195 PTR_DIC(i,j,k)=
196 & PTR_DIC(i,j,k)+GDIC(i,j,k)*deltaTtracer
197 PTR_ALK(i,j,k)=
198 & PTR_ALK(i,j,k)+GALK(i,j,k)*deltaTtracer
199 PTR_PO4(i,j,k)=
200 & PTR_PO4(i,j,k)+GPO4(i,j,k)*deltaTtracer
201 PTR_DOP(i,j,k)=
202 & PTR_DOP(i,j,k)+GDOP(i,j,k)*deltaTtracer
203 PTR_O2(i,j,k)=
204 & PTR_O2(i,j,k)+GO2(i,j,k)*deltaTtracer
205 #ifdef ALLOW_FE
206 PTR_FE(i,j,k)=
207 & PTR_FE(i,j,k)+GFE(i,j,k)*deltaTtracer
208 #endif
209 ENDDO
210 ENDDO
211 ENDDO
212
213 #ifdef ALLOW_TIMEAVE
214 c save averages
215 DO k=1,Nr
216 DO j=1-OLy,sNy+OLy
217 DO i=1-OLx,sNx+OLx
218 BIOave(i,j,k,bi,bj)=BIOave(i,j,k,bi,bj)+
219 & BIOac(i,j,k)*deltaTclock
220 CARave(i,j,k,bi,bj)=CARave(i,j,k,bi,bj)+
221 & CAR(i,j,k)*deltaTclock
222 if (k.eq.1) then
223 SURave(i,j,bi,bj)=SURave(i,j,bi,bj)+
224 & SURC(i,j)*deltaTclock
225 SUROave(i,j,bi,bj)=SUROave(i,j,bi,bj)+
226 & SURO(i,j)*deltaTclock
227 pCO2ave(i,j,bi,bj)=pCO2ave(i,j,bi,bj)+
228 & pCO2(i,j,bi,bj)*deltaTclock
229 pHave(i,j,bi,bj)=pHave(i,j,bi,bj)+
230 & pH(i,j,bi,bj)*deltaTclock
231 fluxCO2ave(i,j,bi,bj)=fluxCO2ave(i,j,bi,bj)+
232 & fluxCO2(i,j,bi,bj)*deltaTclock
233 endif
234 ENDDO
235 ENDDO
236 ENDDO
237 do k=1,Nr
238 dic_timeave(bi,bj,k)=dic_timeave(bi,bj,k)+deltaTclock
239 enddo
240 #endif
241
242 #endif
243 #endif
244
245 c
246 RETURN
247 END

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