| 1 |
C $Header: /u/gcmpack/MITgcm/model/src/diags_phi_rlow.F,v 1.3 2009/10/26 00:43:38 gforget Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "CPP_OPTIONS.h" |
| 5 |
|
| 6 |
CBOP |
| 7 |
C !ROUTINE: DIAGS_PHI_RLOW |
| 8 |
C !INTERFACE: |
| 9 |
SUBROUTINE DIAGS_PHI_RLOW( |
| 10 |
I k, bi, bj, iMin,iMax, jMin,jMax, |
| 11 |
I phiHydF, phiHydC, alphRho, tFld, sFld, |
| 12 |
I myTime, myIter, myThid) |
| 13 |
C !DESCRIPTION: \bv |
| 14 |
C *==========================================================* |
| 15 |
C | S/R DIAGS_PHI_RLOW |
| 16 |
C | o Diagnose Phi-Hydrostatic at r-lower boundary |
| 17 |
C | = bottom pressure (ocean in z-coord) ; |
| 18 |
C | = sea surface elevation (ocean in p-coord) ; |
| 19 |
C | = height at the top of atmosphere (in p-coord) ; |
| 20 |
C *==========================================================* |
| 21 |
C \ev |
| 22 |
|
| 23 |
C !USES: |
| 24 |
IMPLICIT NONE |
| 25 |
C == Global variables == |
| 26 |
#include "SIZE.h" |
| 27 |
#include "EEPARAMS.h" |
| 28 |
#include "PARAMS.h" |
| 29 |
#include "GRID.h" |
| 30 |
#include "SURFACE.h" |
| 31 |
#include "DYNVARS.h" |
| 32 |
|
| 33 |
C !INPUT/OUTPUT PARAMETERS: |
| 34 |
C == Routine Arguments == |
| 35 |
C bi,bj :: tile index |
| 36 |
C iMin,iMax,jMin,jMax :: Loop counters |
| 37 |
C phiHydF :: hydrostatic potential anomaly at middle between |
| 38 |
C 2 centers k & k+1 (interface k+1) |
| 39 |
C phiHydC :: hydrostatic potential anomaly at cell center |
| 40 |
C (atmos: =Geopotential ; ocean-z: =Pressure/rho) |
| 41 |
C alphRho :: Density (z-coord) or specific volume (p-coord) |
| 42 |
C tFld :: Potential temp. |
| 43 |
C sFld :: Salinity |
| 44 |
C myTime :: Current time |
| 45 |
C myIter :: Current iteration number |
| 46 |
C myThid :: Instance number for this call of the routine. |
| 47 |
INTEGER k, bi,bj, iMin,iMax, jMin,jMax |
| 48 |
_RL phiHydF(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 49 |
_RL phiHydC(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 50 |
_RL alphRho(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 51 |
_RL tFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
| 52 |
_RL sFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
| 53 |
_RL myTime |
| 54 |
INTEGER myIter, myThid |
| 55 |
|
| 56 |
#ifdef INCLUDE_PHIHYD_CALCULATION_CODE |
| 57 |
|
| 58 |
C !LOCAL VARIABLES: |
| 59 |
C == Local variables == |
| 60 |
C i,j :: Loop counters |
| 61 |
INTEGER i,j |
| 62 |
_RL zero, one, half |
| 63 |
_RL ddRloc, ratioRm, ratioRp |
| 64 |
PARAMETER ( zero= 0. _d 0 , one= 1. _d 0 , half= .5 _d 0 ) |
| 65 |
CEOP |
| 66 |
|
| 67 |
IF ( buoyancyRelation .EQ. 'OCEANIC' ) THEN |
| 68 |
|
| 69 |
C----- Compute bottom pressure deviation from gravity*rho0*H |
| 70 |
C Start from phiHyd at the (bottom) tracer point and add Del_h*g*rho' |
| 71 |
C with Del_h = distance from the bottom up to tracer point |
| 72 |
|
| 73 |
IF (integr_GeoPot.EQ.1) THEN |
| 74 |
C -- Finite Volume Form |
| 75 |
|
| 76 |
DO j=jMin,jMax |
| 77 |
DO i=iMin,iMax |
| 78 |
IF ( k .EQ. kLowC(i,j,bi,bj) ) THEN |
| 79 |
ddRloc = rC(k)-R_low(i,j,bi,bj) |
| 80 |
phiHydLow(i,j,bi,bj) = phiHydC(i,j) |
| 81 |
& + ddRloc*gravity*alphRho(i,j)*recip_rhoConst |
| 82 |
ENDIF |
| 83 |
ENDDO |
| 84 |
ENDDO |
| 85 |
|
| 86 |
ELSE |
| 87 |
C -- Finite Difference Form |
| 88 |
|
| 89 |
ratioRm = one |
| 90 |
ratioRp = one |
| 91 |
IF (k.GT.1 ) ratioRm = half*drC(k)/(rF(k)-rC(k)) |
| 92 |
IF (k.LT.Nr) ratioRp = half*drC(k+1)/(rC(k)-rF(k+1)) |
| 93 |
|
| 94 |
DO j=jMin,jMax |
| 95 |
DO i=iMin,iMax |
| 96 |
IF ( k .EQ. kLowC(i,j,bi,bj) ) THEN |
| 97 |
ddRloc = rC(k)-R_low(i,j,bi,bj) |
| 98 |
phiHydLow(i,j,bi,bj) = phiHydC(i,j) |
| 99 |
& +( MIN(zero,ddRloc)*ratioRm |
| 100 |
& +MAX(zero,ddRloc)*ratioRp |
| 101 |
& )*gravity*alphRho(i,j)*recip_rhoConst |
| 102 |
ENDIF |
| 103 |
ENDDO |
| 104 |
ENDDO |
| 105 |
|
| 106 |
C -- end if integr_GeoPot = ... |
| 107 |
ENDIF |
| 108 |
|
| 109 |
C -- end buoyancyR = Oceanic (z) |
| 110 |
ENDIF |
| 111 |
|
| 112 |
IF (k.EQ.Nr) THEN |
| 113 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 114 |
C -- last level (bottom): rescale (r*) and add surface contribution |
| 115 |
|
| 116 |
IF ( buoyancyRelation .EQ. 'OCEANICP' .OR. |
| 117 |
& buoyancyRelation .EQ. 'ATMOSPHERIC' ) THEN |
| 118 |
C -- P coordinate : Phi(R_low) is simply at the top : |
| 119 |
DO j=jMin,jMax |
| 120 |
DO i=iMin,iMax |
| 121 |
phiHydLow(i,j,bi,bj) = phiHydF(i,j) |
| 122 |
ENDDO |
| 123 |
ENDDO |
| 124 |
ENDIF |
| 125 |
|
| 126 |
DO j=jMin,jMax |
| 127 |
DO i=iMin,iMax |
| 128 |
phiHydLow(i,j,bi,bj) = phiHydLow(i,j,bi,bj) |
| 129 |
& + Bo_surf(i,j,bi,bj)*etaN(i,j,bi,bj) |
| 130 |
& + phi0surf(i,j,bi,bj) |
| 131 |
ENDDO |
| 132 |
ENDDO |
| 133 |
|
| 134 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 135 |
C -- end if k=Nr. |
| 136 |
ENDIF |
| 137 |
|
| 138 |
#endif /* INCLUDE_PHIHYD_CALCULATION_CODE */ |
| 139 |
|
| 140 |
RETURN |
| 141 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph