/[MITgcm]/MITgcm/model/src/ini_spherical_polar_grid.F
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revision 1.5 by cnh, Mon Jun 8 21:43:01 1998 UTC revision 1.12 by adcroft, Wed Dec 9 16:11:52 1998 UTC
# Line 1  Line 1 
1  C $Header$  C $Header$
2    
3  #include "CPP_EEOPTIONS.h"  #include "CPP_OPTIONS.h"
4    
5  CStartOfInterface  CStartOfInterface
6        SUBROUTINE INI_SPHERICAL_POLAR_GRID( myThid )        SUBROUTINE INI_SPHERICAL_POLAR_GRID( myThid )
# Line 33  C     | Under the spherical polar grid m Line 33  C     | Under the spherical polar grid m
33  C     | in X and Y are in degrees. Distance in Z are in m or Pa  |  C     | in X and Y are in degrees. Distance in Z are in m or Pa  |
34  C     | depending on the vertical gridding mode.                 |  C     | depending on the vertical gridding mode.                 |
35  C     \==========================================================/  C     \==========================================================/
36          IMPLICIT NONE
37    
38  C     === Global variables ===  C     === Global variables ===
39  #include "SIZE.h"  #include "SIZE.h"
# Line 65  C     latS         values. Line 66  C     latS         values.
66  C     I,J,K  C     I,J,K
67        _RL    xG, yG, zG        _RL    xG, yG, zG
68        _RL    phi        _RL    phi
69        _RL    zUpper(Nz), zLower(Nz)        _RL    zUpper(Nr), zLower(Nr)
70        _RL    xBase, yBase        _RL    xBase, yBase
71        INTEGER iG, jG        INTEGER iG, jG
72        INTEGER bi, bj        INTEGER bi, bj
# Line 102  C           longitude - phiMin and theta Line 103  C           longitude - phiMin and theta
103            xc(I,J,bi,bj)  = xG + delX(iG+i-1)*0.5 _d 0            xc(I,J,bi,bj)  = xG + delX(iG+i-1)*0.5 _d 0
104            yc(I,J,bi,bj)  = yG + delY(jG+j-1)*0.5 _d 0            yc(I,J,bi,bj)  = yG + delY(jG+j-1)*0.5 _d 0
105            xG = xG + delX(iG+I-1)            xG = xG + delX(iG+I-1)
106            dxF(I,J,bi,bj) = delX(iG+i-1)*deg2rad*rSphere*COS(yc(I,J,bi,bj)*deg2rad)            dxF(I,J,bi,bj) = delX(iG+i-1)*deg2rad
107         &    *rSphere*COS(yc(I,J,bi,bj)*deg2rad)
108            dyF(I,J,bi,bj) = delY(jG+j-1)*deg2rad*rSphere            dyF(I,J,bi,bj) = delY(jG+j-1)*deg2rad*rSphere
109           ENDDO           ENDDO
110           yG = yG + delY(jG+J-1)           yG = yG + delY(jG+J-1)
# Line 134  C     dxG, dyG are separations between c Line 136  C     dxG, dyG are separations between c
136        ENDDO        ENDDO
137        _EXCH_XY_R4(dxG, myThid )        _EXCH_XY_R4(dxG, myThid )
138        _EXCH_XY_R4(dyG, myThid )        _EXCH_XY_R4(dyG, myThid )
 C     dxV, dyU are separations between velocity points along cell faces.  
       DO bj = myByLo(myThid), myByHi(myThid)  
        DO bi = myBxLo(myThid), myBxHi(myThid)  
         DO J=1,sNy  
          DO I=1,sNx  
           dxV(I,J,bi,bj) = (dxG(I,J,bi,bj)+dxG(I-1,J,bi,bj))*0.5 _d 0  
           dyU(I,J,bi,bj) = (dyG(I,J,bi,bj)+dyG(I,J-1,bi,bj))*0.5 _d 0  
          ENDDO  
         ENDDO  
        ENDDO  
       ENDDO  
       _EXCH_XY_R4(dxV, myThid )  
       _EXCH_XY_R4(dyU, myThid )  
139  C     dxC, dyC is separation between cell centers  C     dxC, dyC is separation between cell centers
140        DO bj = myByLo(myThid), myByHi(myThid)        DO bj = myByLo(myThid), myByHi(myThid)
141         DO bi = myBxLo(myThid), myBxHi(myThid)         DO bi = myBxLo(myThid), myBxHi(myThid)
# Line 160  C     dxC, dyC is separation between cel Line 149  C     dxC, dyC is separation between cel
149        ENDDO        ENDDO
150        _EXCH_XY_R4(dxC, myThid )        _EXCH_XY_R4(dxC, myThid )
151        _EXCH_XY_R4(dyC, myThid )        _EXCH_XY_R4(dyC, myThid )
152  C     Calculate recipricols  C     dxV, dyU are separations between velocity points along cell faces.
153        DO bj = myByLo(myThid), myByHi(myThid)        DO bj = myByLo(myThid), myByHi(myThid)
154         DO bi = myBxLo(myThid), myBxHi(myThid)         DO bi = myBxLo(myThid), myBxHi(myThid)
155          DO J=1,sNy          DO J=1,sNy
156           DO I=1,sNx           DO I=1,sNx
157            rDxG(I,J,bi,bj)=1.d0/dxG(I,J,bi,bj)            dxV(I,J,bi,bj) = (dxG(I,J,bi,bj)+dxG(I-1,J,bi,bj))*0.5 _d 0
158            rDyG(I,J,bi,bj)=1.d0/dyG(I,J,bi,bj)  #ifdef OLD_UV_GEOMETRY
159            rDxC(I,J,bi,bj)=1.d0/dxC(I,J,bi,bj)            dyU(I,J,bi,bj) = (dyG(I,J,bi,bj)+dyG(I,J-1,bi,bj))*0.5 _d 0
160            rDyC(I,J,bi,bj)=1.d0/dyC(I,J,bi,bj)  #else
161            rDxF(I,J,bi,bj)=1.d0/dxF(I,J,bi,bj)            dyU(I,J,bi,bj) = (dyC(I,J,bi,bj)+dyC(I-1,J,bi,bj))*0.5 _d 0
162            rDyF(I,J,bi,bj)=1.d0/dyF(I,J,bi,bj)  #endif
           rDxV(I,J,bi,bj)=1.d0/dxV(I,J,bi,bj)  
           rDyU(I,J,bi,bj)=1.d0/dyU(I,J,bi,bj)  
163           ENDDO           ENDDO
164          ENDDO          ENDDO
165         ENDDO         ENDDO
166        ENDDO        ENDDO
167        _EXCH_XY_R4(rDxG, myThid )        _EXCH_XY_R4(dxV, myThid )
168        _EXCH_XY_R4(rDyG, myThid )        _EXCH_XY_R4(dyU, myThid )
169        _EXCH_XY_R4(rDxC, myThid )  C     Calculate vertical face area and trigonometric terms
       _EXCH_XY_R4(rDyC, myThid )  
       _EXCH_XY_R4(rDxF, myThid )  
       _EXCH_XY_R4(rDyF, myThid )  
       _EXCH_XY_R4(rDxV, myThid )  
       _EXCH_XY_R4(rDyU, myThid )  
 C     Calculate vertical face area  
170        DO bj = myByLo(myThid), myByHi(myThid)        DO bj = myByLo(myThid), myByHi(myThid)
171         DO bi = myBxLo(myThid), myBxHi(myThid)         DO bi = myBxLo(myThid), myBxHi(myThid)
172          DO J=1,sNy          DO J=1,sNy
# Line 193  C     Calculate vertical face area Line 174  C     Calculate vertical face area
174            jG = myYGlobalLo + (bj-1)*sNy + J-1            jG = myYGlobalLo + (bj-1)*sNy + J-1
175            latS = yc(i,j,bi,bj)-delY(jG)*0.5 _d 0            latS = yc(i,j,bi,bj)-delY(jG)*0.5 _d 0
176            latN = yc(i,j,bi,bj)+delY(jG)*0.5 _d 0            latN = yc(i,j,bi,bj)+delY(jG)*0.5 _d 0
177            zA(I,J,bi,bj) = dyF(I,J,bi,bj)  #ifdef OLD_UV_GEOMETRY
178              rA(I,J,bi,bj) = dyF(I,J,bi,bj)
179       &    *rSphere*(SIN(latN*deg2rad)-SIN(latS*deg2rad))       &    *rSphere*(SIN(latN*deg2rad)-SIN(latS*deg2rad))
180    #else
181              rA(I,J,bi,bj) = rSphere*delX(iG)*deg2rad
182         &    *rSphere*(SIN(latN*deg2rad)-SIN(latS*deg2rad))
183    #endif
184    C         Area cannot be zero but sin can be if lat if < -90.
185              IF ( rA(I,J,bi,bj) .LT. 0. ) rA(I,J,bi,bj) = -rA(I,J,bi,bj)
186              tanPhiAtU(i,j,bi,bj)=tan(_yC(i,j,bi,bj)*deg2rad)
187              tanPhiAtV(i,j,bi,bj)=tan(latS*deg2rad)
188           ENDDO           ENDDO
189          ENDDO          ENDDO
190         ENDDO         ENDDO
191        ENDDO        ENDDO
192          _EXCH_XY_R4 (rA       , myThid )
193          _EXCH_XY_R4 (tanPhiAtU , myThid )
194          _EXCH_XY_R4 (tanPhiAtV , myThid )
195        DO bj = myByLo(myThid), myByHi(myThid)        DO bj = myByLo(myThid), myByHi(myThid)
196         DO bi = myBxLo(myThid), myBxHi(myThid)         DO bi = myBxLo(myThid), myBxHi(myThid)
197          DO K=1,Nz          DO J=1,sNy
198           DO J=1,sNy           DO I=1,sNx
199            DO I=1,sNx            iG = myXGlobalLo + (bi-1)*sNx + I-1
200             IF (HFacC(I,J,K,bi,bj) .NE. 0. D0 ) THEN            jG = myYGlobalLo + (bj-1)*sNy + J-1
201              rHFacC(I,J,K,bi,bj) = 1. D0 / HFacC(I,J,K,bi,bj)            latS = yc(i,j-1,bi,bj)
202             ELSE            latN = yc(i,j,bi,bj)
203              rHFacC(I,J,K,bi,bj) = 0. D0  #ifdef OLD_UV_GEOMETRY
204             ENDIF            rAw(I,J,bi,bj) = 0.5*(rA(I,J,bi,bj)+rA(I-1,J,bi,bj))
205             IF (HFacW(I,J,K,bi,bj) .NE. 0. D0 ) THEN            rAs(I,J,bi,bj) = 0.5*(rA(I,J,bi,bj)+rA(I,J-1,bi,bj))
206              rHFacW(I,J,K,bi,bj) = 1. D0 / HFacW(I,J,K,bi,bj)  #else
207              maskW(I,J,K,bi,bj) = 1. D0            rAw(I,J,bi,bj) = 0.5*(rA(I,J,bi,bj)+rA(I-1,J,bi,bj))
208             ELSE            rAs(I,J,bi,bj) = rSphere*delX(iG)*deg2rad
209              rHFacW(I,J,K,bi,bj) = 0. D0       &    *rSphere*(SIN(latN*deg2rad)-SIN(latS*deg2rad))
210              maskW(I,J,K,bi,bj) = 0.0 D0  #endif
            ENDIF  
            IF (HFacS(I,J,K,bi,bj) .NE. 0. D0 ) THEN  
             rHFacS(I,J,K,bi,bj) = 1. D0 / HFacS(I,J,K,bi,bj)  
             maskS(I,J,K,bi,bj) = 1. D0  
            ELSE  
             rHFacS(I,J,K,bi,bj) = 0. D0  
             maskS(I,J,K,bi,bj) = 0. D0  
            ENDIF  
           ENDDO  
211           ENDDO           ENDDO
212          ENDDO          ENDDO
213         ENDDO         ENDDO
214        ENDDO        ENDDO
215  C     Now sync. and get/send edge regions that are shared with        _EXCH_XY_R4 (rAw      , myThid )
216  C     other threads.        _EXCH_XY_R4 (rAs      , myThid )
       _EXCH_XYZ_R4(rHFacC    , myThid )  
       _EXCH_XYZ_R4(rHFacW    , myThid )  
       _EXCH_XYZ_R4(rHFacS    , myThid )  
       _EXCH_XYZ_R4(maskW    , myThid )  
       _EXCH_XYZ_R4(maskS    , myThid )  
       _EXCH_XY_R4 (zA       , myThid )  
   
 CcnhDebugStarts  
       tanPhiAtU = 0. _d 0  
       tanPhiAtV = 0. _d 0  
       _EXCH_XY_R4 (tanPhiAtU , myThid )  
       _EXCH_XY_R4 (tanPhiAtV , myThid )  
 CcnhDebugEnds  
   
   
217  C  C
218        RETURN        RETURN
219        END        END
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