/[MITgcm]/MITgcm/model/src/calc_gt.F
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revision 1.2 by cnh, Fri Apr 24 02:05:40 1998 UTC revision 1.3 by adcroft, Wed May 20 21:29:31 1998 UTC
# Line 6  CStartOfInterFace Line 6  CStartOfInterFace
6        SUBROUTINE CALC_GT(        SUBROUTINE CALC_GT(
7       I           bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,       I           bi,bj,iMin,iMax,jMin,jMax,k,kM1,kUp,kDown,
8       I           xA,yA,uTrans,vTrans,wTrans,maskup,       I           xA,yA,uTrans,vTrans,wTrans,maskup,
9         I           K13,K23,K33,KapGM,
10       U           af,df,fZon,fMer,fVerT,       U           af,df,fZon,fMer,fVerT,
11       I           myThid )       I           myThid )
12  C     /==========================================================\  C     /==========================================================\
# Line 69  C     myThid - Instance number for this Line 70  C     myThid - Instance number for this
70        _RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
71        _RL wTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL wTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
72        _RS maskUp(1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RS maskUp(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
73          _RL K13   (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nz)
74          _RL K23   (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nz)
75          _RL K33   (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nz)
76          _RL KapGM (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
77        _RL af    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL af    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
78        _RL df    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)        _RL df    (1-OLx:sNx+OLx,1-OLy:sNy+OLy)
79        INTEGER kUp,kDown,kM1        INTEGER k,kUp,kDown,kM1
80        INTEGER bi,bj,iMin,iMax,jMin,jMax        INTEGER bi,bj,iMin,iMax,jMin,jMax
81        INTEGER myThid        INTEGER myThid
82  CEndOfInterface  CEndOfInterface
83    
84  C     == Local variables ==  C     == Local variables ==
85  C     I, J, K - Loop counters  C     I, J, K - Loop counters
86        INTEGER i,j,k        INTEGER i,j
87        REAL afFacT, dfFacT        _RL afFacT, dfFacT
88        REAL dutdxFac        _RL dutdxFac
89          _RL dTdx(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
90          _RL dTdy(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
91    
92        afFacT = 1. _d 0        afFacT = 1. _d 0
93        dfFacT = 1. _d 0        dfFacT = 1. _d 0
# Line 98  C     Advective component of zonal flux Line 105  C     Advective component of zonal flux
105       &   uTrans(i,j)*(theta(i,j,k,bi,bj)+theta(i-1,j,k,bi,bj))*0.5 _d 0       &   uTrans(i,j)*(theta(i,j,k,bi,bj)+theta(i-1,j,k,bi,bj))*0.5 _d 0
106         ENDDO         ENDDO
107        ENDDO        ENDDO
108    C     Zonal tracer gradient
109          DO j=jMin,jMax
110           DO i=iMin,iMax
111            dTdx(i,j) = rdxC(i,j,bi,bj)*
112         &  (theta(i,j,k,bi,bj)-theta(i-1,j,k,bi,bj))
113           ENDDO
114          ENDDO
115  C     Diffusive component of zonal flux  C     Diffusive component of zonal flux
116        DO j=jMin,jMax        DO j=jMin,jMax
117         DO i=iMin,iMax         DO i=iMin,iMax
118          df(i,j) =          df(i,j) = -(diffKhT+0.5*(KapGM(i,j)+KapGM(i-1,j)))*
119       &   -diffKhT*xA(i,j)*rdxC(i,j,bi,bj)       &            xA(i,j)*dTdx(i,j)
      &   *(theta(i,j,k,bi,bj)-theta(i-1,j,k,bi,bj))  
120         ENDDO         ENDDO
121        ENDDO        ENDDO
122  C     Net zonal flux  C     Net zonal flux
# Line 122  C       Advective component of meridiona Line 135  C       Advective component of meridiona
135       &   vTrans(i,j)*(theta(i,j,k,bi,bj)+theta(i,j-1,k,bi,bj))*0.5 _d 0       &   vTrans(i,j)*(theta(i,j,k,bi,bj)+theta(i,j-1,k,bi,bj))*0.5 _d 0
136         ENDDO         ENDDO
137        ENDDO        ENDDO
138    C     Zonal tracer gradient
139          DO j=jMin,jMax
140           DO i=iMin,iMax
141            dTdy(i,j) = rdyC(i,j,bi,bj)*
142         &  (theta(i,j,k,bi,bj)-theta(i,j-1,k,bi,bj))
143           ENDDO
144          ENDDO
145  C     Diffusive component of meridional flux  C     Diffusive component of meridional flux
146        DO j=jMin,jMax        DO j=jMin,jMax
147         DO i=iMin,iMax         DO i=iMin,iMax
148          df(i,j) =          df(i,j) = -(diffKhT+0.5*(KapGM(i,j)+KapGM(i,j-1)))*
149       &   -diffKhT*yA(i,j)*rdyC(i,j,bi,bj)       &            yA(i,j)*dTdy(i,j)
 C    &   -1.D3*rdyC(i,j,bi,bj)*dZF(K)*delX(1)*hFacC(i,j,k,bi,bj)*  
 C    &    hFacC(i,j-1,k,bi,bj)  
      &   *(theta(i,j,k,bi,bj)-theta(i,j-1,k,bi,bj))  
150         ENDDO         ENDDO
151        ENDDO        ENDDO
152  C     Net meridional flux  C     Net meridional flux
# Line 139  C     Net meridional flux Line 156  C     Net meridional flux
156         ENDDO         ENDDO
157        ENDDO        ENDDO
158    
159    C--   Interpolate terms for Redi/GM scheme
160          DO j=jMin,jMax
161           DO i=iMin,iMax
162            dTdx(i,j) = 0.5*(
163         &   +0.5*(maskW(i+1,j,k,bi,bj)*rdxC(i+1,j,bi,bj)*
164         &           (theta(i+1,j,k,bi,bj)-theta(i,j,k,bi,bj))
165         &        +maskW(i,j,k,bi,bj)*rdxC(i,j,bi,bj)*
166         &           (theta(i,j,k,bi,bj)-theta(i-1,j,k,bi,bj)))
167         &   +0.5*(maskW(i+1,j,km1,bi,bj)*rdxC(i+1,j,bi,bj)*
168         &           (theta(i+1,j,km1,bi,bj)-theta(i,j,km1,bi,bj))
169         &        +maskW(i,j,km1,bi,bj)*rdxC(i,j,bi,bj)*
170         &           (theta(i,j,km1,bi,bj)-theta(i-1,j,km1,bi,bj)))
171         &       )
172           ENDDO
173          ENDDO
174          DO j=jMin,jMax
175           DO i=iMin,iMax
176            dTdy(i,j) = 0.5*(
177         &   +0.5*(maskS(i,j,k,bi,bj)*rdyC(i,j,bi,bj)*
178         &           (theta(i,j,k,bi,bj)-theta(i,j-1,k,bi,bj))
179         &        +maskS(i,j+1,k,bi,bj)*rdyC(i,j+1,bi,bj)*
180         &           (theta(i,j+1,k,bi,bj)-theta(i,j,k,bi,bj)))
181         &   +0.5*(maskS(i,j,km1,bi,bj)*rdyC(i,j,bi,bj)*
182         &           (theta(i,j,km1,bi,bj)-theta(i,j-1,km1,bi,bj))
183         &        +maskS(i,j+1,km1,bi,bj)*rdyC(i,j+1,bi,bj)*
184         &           (theta(i,j+1,km1,bi,bj)-theta(i,j,km1,bi,bj)))
185         &       )
186           ENDDO
187          ENDDO
188    
189  C--   Vertical flux (fVerT) above  C--   Vertical flux (fVerT) above
 C     Note: For K=1 then KM1=1 this gives a dT/dz = 0 upper  
 C           boundary condition.  
190  C     Advective component of vertical flux  C     Advective component of vertical flux
191    C     Note: For K=1 then KM1=1 this gives a barZ(T) = T
192    C     (this plays the role of the free-surface correction)
193        DO j=jMin,jMax        DO j=jMin,jMax
194         DO i=iMin,iMax         DO i=iMin,iMax
195          af(i,j) =          af(i,j) =
# Line 150  C     Advective component of vertical fl Line 197  C     Advective component of vertical fl
197         ENDDO         ENDDO
198        ENDDO        ENDDO
199  C     Diffusive component of vertical flux  C     Diffusive component of vertical flux
200    C     Note: For K=1 then KM1=1 this gives a dT/dz = 0 upper
201    C           boundary condition.
202        DO j=jMin,jMax        DO j=jMin,jMax
203         DO i=iMin,iMax         DO i=iMin,iMax
204          df(i,j) =          df(i,j) = zA(i,j,bi,bj)*(
205       &   -diffKzT*zA(i,j,bi,bj)*rdzC(k)       &   -(diffKzT+KapGM(i,j)*K33(i,j,k))*rdzC(k)
206       &   *(theta(i,j,kM1,bi,bj)-theta(i,j,k,bi,bj))       &   *(theta(i,j,kM1,bi,bj)-theta(i,j,k,bi,bj))
207         &   -KapGM(i,j)*K13(i,j,k)*dTdx(i,j)
208         &   -KapGM(i,j)*K23(i,j,k)*dTdy(i,j)
209         &   )
210         ENDDO         ENDDO
211        ENDDO        ENDDO
212  C     Net vertical flux  C     Net vertical flux
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