/[MITgcm]/MITgcm_contrib/dcarroll/highres_darwin/code/dic_atmos.F
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Revision 1.1 - (show annotations) (download)
Sun Sep 22 21:23:46 2019 UTC (5 years, 10 months ago) by dcarroll
Branch: MAIN
CVS Tags: HEAD
Initial check in of high resolution Darwin simulation code

1 #include "CPP_OPTIONS.h"
2 #include "PTRACERS_OPTIONS.h"
3 #include "DARWIN_OPTIONS.h"
4
5 #ifdef ALLOW_PTRACERS
6 #ifdef ALLOW_DARWIN
7
8 #ifdef ALLOW_CARBON
9
10 CBOP
11 C !ROUTINE: DIC_ATMOS
12
13 C !INTERFACE: ==========================================================
14 SUBROUTINE DIC_ATMOS( istate, myTime, myIter, myThid )
15
16 C !DESCRIPTION:
17 C Calculate the atmospheric pCO2
18 C dic_int1:
19 C 0=use default 278.d-6
20 C 1=use constant value - dic_pCO2, read in from data.dic
21 C 2=read in from file
22 C 3=interact with atmospheric box
23 C !USES: ===============================================================
24 IMPLICIT NONE
25 #include "SIZE.h"
26 #include "DYNVARS.h"
27 #include "EEPARAMS.h"
28 #include "PARAMS.h"
29 #include "GRID.h"
30 #include "FFIELDS.h"
31 #include "DARWIN_SIZE.h"
32 #include "DARWIN_IO.h"
33 #include "DARWIN_FLUX.h"
34 #include "PTRACERS_SIZE.h"
35 #include "PTRACERS_FIELDS.h"
36 #include "DIC_ATMOS.h"
37 #ifdef USE_EXFWIND
38 #include "EXF_FIELDS.h"
39 #endif
40
41 C !INPUT PARAMETERS: ===================================================
42 C myThid :: thread number
43 C myIter :: current timestep
44 C myTime :: current time
45 C istate :: 0=initial call, 1=subsequent calls
46 INTEGER myIter, myThid, istate
47 _RL myTime
48
49 LOGICAL DIFFERENT_MULTIPLE
50 EXTERNAL DIFFERENT_MULTIPLE
51
52 C !LOCAL VARIABLES: ====================================================
53 INTEGER bi, bj, I,J,k
54 INTEGER ntim, iUnit
55 c
56 _RL total_flux
57 _RL total_ocean_carbon_old
58 _RL total_atmos_carbon_old
59 _RL total_atmos_moles
60 _RL atpco2
61 _RL total_carbon_old, total_carbon, carbon_diff
62 _RL tmp
63 _RL year_diff_ocean, year_diff_atmos, year_total
64 _RL start_diff_ocean, start_diff_atmos, start_total
65 C variables for reading CO2 input files
66 _RL aWght, bWght
67 c
68 CHARACTER*(MAX_LEN_FNAM) fn
69 LOGICAL permCheckPoint
70 CEOP
71
72 cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
73
74 c if coupled to atmsopheric model, use the
75 c Co2 value passed from the coupler
76 #ifndef USE_ATMOSCO2
77
78 IF ( nThreads .GT. 1 .AND.
79 & ( dic_int1.EQ.2 .OR. dic_int1.EQ.3 ) ) THEN
80 C Problem with I/O and global-sum for multi-threaded execution
81 C Needs to be fixed before using this S/R in multi-threaded run
82 STOP 'S/R DIC_ATMOS: multi-threaded not right'
83 ENDIF
84 # ifdef USE_EXFCO2
85 DO bj=myByLo(myThid),myByHi(myThid)
86 DO bi=myBxLo(myThid),myBxHi(myThid)
87 DO j=1-OLy,sNy+OLy
88 DO i=1-OLx,sNx+OLx
89 AtmospCO2(i,j,bi,bj)=apco2(i,j,bi,bj)
90 ENDDO
91 ENDDO
92 ENDDO
93 ENDDO
94 # else
95
96 c default - set only once
97 if (dic_int1.eq.0.and.istate.eq.0) then
98 DO bj=myByLo(myThid),myByHi(myThid)
99 DO bi=myBxLo(myThid),myBxHi(myThid)
100
101 DO j=1-OLy,sNy+OLy
102 DO i=1-OLx,sNx+OLx
103 AtmospCO2(i,j,bi,bj)=278.0 _d -6
104 ENDDO
105 ENDDO
106
107 ENDDO
108 ENDDO
109 endif
110
111 c user specified value - set only once
112 if (dic_int1.eq.1.and.istate.eq.0) then
113 DO bj=myByLo(myThid),myByHi(myThid)
114 DO bi=myBxLo(myThid),myBxHi(myThid)
115
116 DO j=1-OLy,sNy+OLy
117 DO i=1-OLx,sNx+OLx
118 AtmospCO2(i,j,bi,bj)=dic_pCO2
119 ENDDO
120 ENDDO
121
122 ENDDO
123 ENDDO
124 endif
125
126 c read from a file (note:
127 c dic_int2=number entries to read
128 c dic_int3=start timestep,
129 c dic_int4=timestep between file entries)
130 if (dic_int1.eq.2) then
131 c linearly interpolate between file entries
132 ntim=int((myIter-dic_int3)/dic_int4)+1
133 aWght = FLOAT(myIter-dic_int3)
134 bWght = FLOAT(dic_int4)
135 aWght = 0.5 _d 0 + aWght/bWght - FLOAT(ntim-1)
136 if (aWght.gt.1. _d 0) then
137 ntim=ntim+1
138 aWght=aWght-1. _d 0
139 endif
140 bWght = 1. _d 0 - aWght
141 tmp=co2atmos(ntim)*bWght+co2atmos(ntim+1)*aWght
142 c print*,'weights',ntim, aWght, bWght, tmp
143
144 DO bj=myByLo(myThid),myByHi(myThid)
145 DO bi=myBxLo(myThid),myBxHi(myThid)
146
147 DO j=1-OLy,sNy+OLy
148 DO i=1-OLx,sNx+OLx
149 AtmospCO2(i,j,bi,bj)=tmp
150 ENDDO
151 ENDDO
152
153 c print*,'AtmospCO2(20,20)',AtmospCO2(20,20,bi,bj)
154
155 ENDDO
156 ENDDO
157
158
159 endif
160
161
162 c interactive atmosphere
163 if (dic_int1.eq.3) then
164
165 c _BEGIN_MASTER(myThid)
166
167 cMass dry atmosphere = (5.1352+/-0.0003)d18 kg (Trenberth & Smith,
168 cJournal of Climate 2005)
169 cand Mean molecular mass air = 28.97 g/mol (NASA earth fact sheet)
170 total_atmos_moles= 1.77 _d 20
171 c for 278ppmv we need total_atmos_carbon=4.9206e+16
172
173 if (istate.gt.0) then
174 total_ocean_carbon_old=total_ocean_carbon
175 total_atmos_carbon_old=total_atmos_carbon
176 else
177 total_ocean_carbon_old=0. _d 0
178 total_atmos_carbon_old=0. _d 0
179 endif
180
181 total_flux= 0. _d 0
182 total_ocean_carbon= 0. _d 0
183
184 DO bj=myByLo(myThid),myByHi(myThid)
185 DO bi=myBxLo(myThid),myBxHi(myThid)
186 DO j=1,sNy
187 DO i=1,sNx
188 IF (istate.gt.0) then
189 total_flux=total_flux
190 & + FluxCO2(i,j,bi,bj)*rA(i,j,bi,bj)
191 & *maskC(i,j,1,bi,bj)*dTtracerLev(1)
192 ENDIF
193 ENDDO
194 ENDDO
195 ENDDO
196 ENDDO
197
198 _GLOBAL_SUM_RL(total_flux,myThid)
199 _GLOBAL_SUM_RL(total_ocean_carbon,myThid)
200
201 if (istate.eq.0) then
202 c use value read in dic_init_fixed
203 total_atmos_carbon=total_atmos_carbon_ini
204 else
205 c calculate new atmos pCO2
206 total_atmos_carbon=total_atmos_carbon - total_flux
207 c write out if time for a new pickup
208 permCheckPoint = .FALSE.
209 permCheckPoint =
210 & DIFFERENT_MULTIPLE(pChkptFreq,myTime,deltaTClock)
211 if (permCheckPoint) then
212 DO i = 1,MAX_LEN_FNAM
213 fn(i:i) = ' '
214 ENDDO
215 WRITE(fn,'(A,I10.10)') 'dic_atmos.',myIter
216 C Going to really do some IO. Make everyone except master thread wait.
217 _BARRIER
218 c write values to new pickup
219
220 CALL MDSFINDUNIT( iUnit, myThid )
221 open(iUnit,file=fn,status='new')
222 write(iUnit,*) total_atmos_carbon, atpco2
223 close(iUnit)
224
225 endif
226 endif
227
228 atpco2=total_atmos_carbon/total_atmos_moles
229
230 c print*,'QQpCO2', total_atmos_carbon, atpco2, total_ocean_carbon,
231 c & total_flux
232
233 DO bj=myByLo(myThid),myByHi(myThid)
234 DO bi=myBxLo(myThid),myBxHi(myThid)
235
236 DO j=1-OLy,sNy+OLy
237 DO i=1-OLx,sNx+OLx
238 AtmospCO2(i,j,bi,bj)=atpco2
239 ENDDO
240 ENDDO
241
242 ENDDO
243 ENDDO
244
245 print*,'QQ atmos C, total, pCo2', total_atmos_carbon, atpco2
246 total_carbon=total_atmos_carbon + total_ocean_carbon
247 total_carbon_old=total_atmos_carbon_old + total_ocean_carbon_old
248 carbon_diff=total_carbon-total_carbon_old
249 print*,'QQ total C, current, old, diff', total_carbon,
250 & total_carbon_old, carbon_diff
251 carbon_diff=total_ocean_carbon-total_ocean_carbon_old
252 tmp=carbon_diff-total_flux
253 print*,'QQ ocean C, current, old, diff',total_ocean_carbon,
254 & total_ocean_carbon_old, carbon_diff
255 print*,'QQ air-sea flux, addition diff', total_flux, tmp
256
257 c if end of forcing cycle, find total change in ocean carbon
258 if (istate.eq.0) then
259 total_ocean_carbon_start=total_ocean_carbon
260 total_ocean_carbon_year=total_ocean_carbon
261 total_atmos_carbon_start=total_atmos_carbon
262 total_atmos_carbon_year=total_atmos_carbon
263 else
264 permCheckPoint = .FALSE.
265 permCheckPoint =
266 & DIFFERENT_MULTIPLE(externForcingCycle,myTime,deltaTClock)
267 if (permCheckPoint) then
268 year_diff_ocean=total_ocean_carbon-total_ocean_carbon_year
269 year_diff_atmos=total_atmos_carbon-total_atmos_carbon_year
270 year_total=(total_ocean_carbon+total_atmos_carbon) -
271 & (total_ocean_carbon_year+total_atmos_carbon_year)
272 start_diff_ocean=total_ocean_carbon-total_ocean_carbon_start
273 start_diff_atmos=total_atmos_carbon-total_atmos_carbon_start
274 start_total=(total_ocean_carbon+total_atmos_carbon) -
275 & (total_ocean_carbon_start+total_atmos_carbon_start)
276 print*,'QQ YEAR END'
277 print*,'year diff: ocean, atmos, total', year_diff_ocean,
278 & year_diff_atmos, year_total
279 print*,'start diff: ocean, atmos, total ', start_diff_ocean,
280 & start_diff_atmos, start_total
281 c
282 total_ocean_carbon_year=total_ocean_carbon
283 total_atmos_carbon_year=total_atmos_carbon
284 endif
285 endif
286
287 c _END_MASTER(myThid)
288
289 endif
290
291 # endif /*USE_EXFCO2*/
292 #endif
293
294 RETURN
295 END
296 #endif /*ALLOW_CARBON*/
297
298 #endif /*DARWIN*/
299 #endif /*ALLOW_PTRACERS*/
300 c ==================================================================

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