/[MITgcm]/MITgcm/pkg/dic/dic_surfforcing.F
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revision 1.24 by jmc, Mon Apr 12 20:07:57 2010 UTC revision 1.26 by stephd, Thu May 5 21:31:58 2011 UTC
# Line 139  C$TAF LOOP = parallel Line 139  C$TAF LOOP = parallel
139       I        ak1(i,j,bi,bj),ak2(i,j,bi,bj),       I        ak1(i,j,bi,bj),ak2(i,j,bi,bj),
140       I        ak1p(i,j,bi,bj),ak2p(i,j,bi,bj),ak3p(i,j,bi,bj),       I        ak1p(i,j,bi,bj),ak2p(i,j,bi,bj),ak3p(i,j,bi,bj),
141       I        aks(i,j,bi,bj),akb(i,j,bi,bj),akw(i,j,bi,bj),       I        aks(i,j,bi,bj),akb(i,j,bi,bj),akw(i,j,bi,bj),
142       I        aksi(i,j,bi,bj),akf(i,j,bi,bj),ff(i,j,bi,bj),       I        aksi(i,j,bi,bj),akf(i,j,bi,bj),
143         I        ak0(i,j,bi,bj), fugf(i,j,bi,bj),
144         I        ff(i,j,bi,bj),
145       I        bt(i,j,bi,bj),st(i,j,bi,bj),ft(i,j,bi,bj),       I        bt(i,j,bi,bj),st(i,j,bi,bj),ft(i,j,bi,bj),
146       U        pH(i,j,bi,bj),pCO2(i,j,bi,bj),       U        pH(i,j,bi,bj),pCO2(i,j,bi,bj),
147       I        i,j,kLev,bi,bj,myIter,myThid )       I        i,j,kLev,bi,bj,myIter,myThid )
# Line 160  C calculate SCHMIDT NO. for CO2 Line 162  C calculate SCHMIDT NO. for CO2
162       &          + sca3 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj)       &          + sca3 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj)
163       &          + sca4 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj)       &          + sca4 * theta(i,j,kLev,bi,bj)*theta(i,j,kLev,bi,bj)
164       &                *theta(i,j,kLev,bi,bj)       &                *theta(i,j,kLev,bi,bj)
165    c make sure Schmidt number isn't negative (will happen if temp>39C)
166                 SchmidtNoDIC(i,j)=max(1.0 _d -2, SchmidtNoDIC(i,j))
167    
168  C Determine surface flux (FDIC)  C Determine surface flux (FDIC)
169  C first correct pCO2at for surface atmos pressure  C first correct pCO2at for surface atmos pressure
# Line 170  C then account for Schmidt number Line 174  C then account for Schmidt number
174                Kwexch(i,j) = Kwexch_Pre(i,j,bi,bj)                Kwexch(i,j) = Kwexch_Pre(i,j,bi,bj)
175       &                    / sqrt(SchmidtNoDIC(i,j)/660.0 _d 0)       &                    / sqrt(SchmidtNoDIC(i,j)/660.0 _d 0)
176    
177    #ifdef WATERVAP_BUG
178  C Calculate flux in terms of DIC units using K0, solubility  C Calculate flux in terms of DIC units using K0, solubility
179  C Flux = Vp * ([CO2sat] - [CO2])  C Flux = Vp * ([CO2sat] - [CO2])
180  C CO2sat = K0*pCO2atmos*P/P0  C CO2sat = K0*pCO2atmos*P/P0
# Line 179  C Converting pCO2 to [CO2] using ff, as Line 184  C Converting pCO2 to [CO2] using ff, as
184       &         ak0(i,j,bi,bj)*pCO2sat(i,j) -       &         ak0(i,j,bi,bj)*pCO2sat(i,j) -
185       &         ff(i,j,bi,bj)*pCO2(i,j,bi,bj)       &         ff(i,j,bi,bj)*pCO2(i,j,bi,bj)
186       &         )       &         )
187    #else
188    C Corrected by Val Bennington Nov 2010 per G.A. McKinley's finding
189    C of error in application of water vapor correction
190    c Flux = kw*rho*(ff*pCO2atm-k0*FugFac*pCO2ocean)
191                   FluxCO2(i,j,bi,bj) =
192         &          Kwexch(i,j)*(
193         &            ff(i,j,bi,bj)*pCO2sat(i,j) -
194         &            pCO2(i,j,bi,bj)*fugf(i,j,bi,bj)
195         &            *ak0(i,j,bi,bj) )
196         &
197    #endif
198            ELSE            ELSE
199                FluxCO2(i,j,bi,bj) = 0. _d 0                FluxCO2(i,j,bi,bj) = 0. _d 0
200            ENDIF            ENDIF
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