| 1 |
C $Header: /u/u3/gcmpack/MITgcm/model/src/calc_gw.F,v 1.9.20.1 2003/10/02 18:10:45 edhill Exp $ |
| 2 |
C !DESCRIPTION: \bv |
| 3 |
C $Name: $ |
| 4 |
|
| 5 |
#include "PACKAGES_CONFIG.h" |
| 6 |
#include "CPP_OPTIONS.h" |
| 7 |
|
| 8 |
CBOP |
| 9 |
C !ROUTINE: CALC_GW |
| 10 |
C !INTERFACE: |
| 11 |
SUBROUTINE CALC_GW( |
| 12 |
I myThid) |
| 13 |
C !DESCRIPTION: \bv |
| 14 |
C *==========================================================* |
| 15 |
C | S/R CALC_GW |
| 16 |
C | o Calculate vert. velocity tendency terms ( NH, QH only ) |
| 17 |
C *==========================================================* |
| 18 |
C | In NH and QH, the vertical momentum tendency must be |
| 19 |
C | calculated explicitly and included as a source term |
| 20 |
C | for a 3d pressure eqn. Calculate that term here. |
| 21 |
C | This routine is not used in HYD calculations. |
| 22 |
C *==========================================================* |
| 23 |
C \ev |
| 24 |
|
| 25 |
C !USES: |
| 26 |
IMPLICIT NONE |
| 27 |
C == Global variables == |
| 28 |
#include "SIZE.h" |
| 29 |
#include "DYNVARS.h" |
| 30 |
#include "FFIELDS.h" |
| 31 |
#include "EEPARAMS.h" |
| 32 |
#include "PARAMS.h" |
| 33 |
#include "GRID.h" |
| 34 |
#include "GW.h" |
| 35 |
#include "CG3D.h" |
| 36 |
|
| 37 |
C !INPUT/OUTPUT PARAMETERS: |
| 38 |
C == Routine arguments == |
| 39 |
C myThid - Instance number for this innvocation of CALC_GW |
| 40 |
INTEGER myThid |
| 41 |
|
| 42 |
#ifdef ALLOW_NONHYDROSTATIC |
| 43 |
|
| 44 |
C !LOCAL VARIABLES: |
| 45 |
C == Local variables == |
| 46 |
C bi, bj, :: Loop counters |
| 47 |
C iMin, iMax, |
| 48 |
C jMin, jMax |
| 49 |
C flx_NS :: Temp. used for fVol meridional terms. |
| 50 |
C flx_EW :: Temp. used for fVol zonal terms. |
| 51 |
C flx_Up :: Temp. used for fVol vertical terms. |
| 52 |
C flx_Dn :: Temp. used for fVol vertical terms. |
| 53 |
INTEGER bi,bj,iMin,iMax,jMin,jMax |
| 54 |
_RL flx_NS(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 55 |
_RL flx_EW(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 56 |
_RL flx_Dn(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 57 |
_RL flx_Up(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 58 |
C I,J,K - Loop counters |
| 59 |
INTEGER i,j,k, kP1, kUp |
| 60 |
_RL wOverride |
| 61 |
_RS hFacROpen |
| 62 |
_RS hFacRClosed |
| 63 |
_RL ab15,ab05 |
| 64 |
_RL tmp_VbarZ, tmp_UbarZ, tmp_WbarZ |
| 65 |
|
| 66 |
_RL Half |
| 67 |
PARAMETER(Half=0.5D0) |
| 68 |
|
| 69 |
#define I0 1 |
| 70 |
#define In sNx |
| 71 |
#define J0 1 |
| 72 |
#define Jn sNy |
| 73 |
CEOP |
| 74 |
|
| 75 |
ceh3 needs an IF ( useNONHYDROSTATIC ) THEN |
| 76 |
|
| 77 |
C Adams-Bashforth timestepping weights |
| 78 |
ab15=1.5+abeps |
| 79 |
ab05=-0.5-abeps |
| 80 |
|
| 81 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 82 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 83 |
DO K=1,Nr |
| 84 |
DO j=1-OLy,sNy+OLy |
| 85 |
DO i=1-OLx,sNx+OLx |
| 86 |
gWNM1(i,j,k,bi,bj) = gW(i,j,k,bi,bj) |
| 87 |
gW(i,j,k,bi,bj) = 0. |
| 88 |
ENDDO |
| 89 |
ENDDO |
| 90 |
ENDDO |
| 91 |
ENDDO |
| 92 |
ENDDO |
| 93 |
|
| 94 |
C Catch barotropic mode |
| 95 |
IF ( Nr .LT. 2 ) RETURN |
| 96 |
|
| 97 |
C For each tile |
| 98 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 99 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 100 |
|
| 101 |
C Boundaries condition at top |
| 102 |
DO J=J0,Jn |
| 103 |
DO I=I0,In |
| 104 |
Flx_Dn(I,J,bi,bj)=0. |
| 105 |
ENDDO |
| 106 |
ENDDO |
| 107 |
|
| 108 |
C Sweep down column |
| 109 |
DO K=2,Nr |
| 110 |
Kp1=K+1 |
| 111 |
wOverRide=1. |
| 112 |
if (K.EQ.Nr) then |
| 113 |
Kp1=Nr |
| 114 |
wOverRide=0. |
| 115 |
endif |
| 116 |
C Flux on Southern face |
| 117 |
DO J=J0,Jn+1 |
| 118 |
DO I=I0,In |
| 119 |
tmp_VbarZ=Half*( |
| 120 |
& _hFacS(I,J,K-1,bi,bj)*vVel( I ,J,K-1,bi,bj) |
| 121 |
& +_hFacS(I,J, K ,bi,bj)*vVel( I ,J, K ,bi,bj)) |
| 122 |
Flx_NS(I,J,bi,bj)= |
| 123 |
& tmp_VbarZ*Half*(wVel(I,J,K,bi,bj)+wVel(I,J-1,K,bi,bj)) |
| 124 |
& -viscAh*_recip_dyC(I,J,bi,bj)*( |
| 125 |
& wVel(I,J,K,bi,bj)-wVel(I,J-1,K,bi,bj) ) |
| 126 |
ENDDO |
| 127 |
ENDDO |
| 128 |
C Flux on Western face |
| 129 |
DO J=J0,Jn |
| 130 |
DO I=I0,In+1 |
| 131 |
tmp_UbarZ=Half*( |
| 132 |
& _hFacW(I,J,K-1,bi,bj)*uVel( I ,J,K-1,bi,bj) |
| 133 |
& +_hFacW(I,J, K ,bi,bj)*uVel( I ,J, K ,bi,bj)) |
| 134 |
Flx_EW(I,J,bi,bj)= |
| 135 |
& tmp_UbarZ*Half*(wVel(I,J,K,bi,bj)+wVel(I-1,J,K,bi,bj)) |
| 136 |
& -viscAh*_recip_dxC(I,J,bi,bj)*( |
| 137 |
& wVel(I,J,K,bi,bj)-wVel(I-1,J,K,bi,bj) ) |
| 138 |
ENDDO |
| 139 |
ENDDO |
| 140 |
C Flux on Lower face |
| 141 |
DO J=J0,Jn |
| 142 |
DO I=I0,In |
| 143 |
Flx_Up(I,J,bi,bj)=Flx_Dn(I,J,bi,bj) |
| 144 |
tmp_WbarZ=Half*(wVel(I,J,K,bi,bj)+wVel(I,J,Kp1,bi,bj)) |
| 145 |
Flx_Dn(I,J,bi,bj)= |
| 146 |
& tmp_WbarZ*tmp_WbarZ |
| 147 |
& -viscAr*recip_drF(K)*( wVel(I,J,K,bi,bj) |
| 148 |
& -wOverRide*wVel(I,J,Kp1,bi,bj) ) |
| 149 |
ENDDO |
| 150 |
ENDDO |
| 151 |
C Divergence of fluxes |
| 152 |
DO J=J0,Jn |
| 153 |
DO I=I0,In |
| 154 |
gW(I,J,K,bi,bj) = 0. |
| 155 |
& -( |
| 156 |
& +_recip_dxF(I,J,bi,bj)*( |
| 157 |
& Flx_EW(I+1,J,bi,bj)-Flx_EW(I,J,bi,bj) ) |
| 158 |
& +_recip_dyF(I,J,bi,bj)*( |
| 159 |
& Flx_NS(I,J+1,bi,bj)-Flx_NS(I,J,bi,bj) ) |
| 160 |
& +recip_drC(K) *( |
| 161 |
& Flx_Up(I,J,bi,bj) -Flx_Dn(I,J,bi,bj) ) |
| 162 |
& ) |
| 163 |
caja * recip_hFacU(I,J,K,bi,bj) |
| 164 |
caja NOTE: This should be included |
| 165 |
caja but we need an hFacUW (above U points) |
| 166 |
caja and an hFacUS (above V points) too... |
| 167 |
ENDDO |
| 168 |
ENDDO |
| 169 |
ENDDO |
| 170 |
ENDDO |
| 171 |
ENDDO |
| 172 |
|
| 173 |
|
| 174 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 175 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 176 |
DO K=2,Nr |
| 177 |
DO j=J0,Jn |
| 178 |
DO i=I0,In |
| 179 |
wVel(i,j,k,bi,bj) = wVel(i,j,k,bi,bj) |
| 180 |
& +deltatMom*( ab15*gW(i,j,k,bi,bj) |
| 181 |
& +ab05*gWNM1(i,j,k,bi,bj) ) |
| 182 |
IF (hFacC(I,J,K,bi,bj).EQ.0.) wVel(i,j,k,bi,bj)=0. |
| 183 |
ENDDO |
| 184 |
ENDDO |
| 185 |
ENDDO |
| 186 |
ENDDO |
| 187 |
ENDDO |
| 188 |
|
| 189 |
#ifdef ALLOW_OBCS |
| 190 |
IF (useOBCS) THEN |
| 191 |
C-- This call is aesthetic: it makes the W field |
| 192 |
C consistent with the OBs but this has no algorithmic |
| 193 |
C impact. This is purely for diagnostic purposes. |
| 194 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 195 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 196 |
DO K=1,Nr |
| 197 |
CALL OBCS_APPLY_W( bi, bj, K, wVel, myThid ) |
| 198 |
ENDDO |
| 199 |
ENDDO |
| 200 |
ENDDO |
| 201 |
ENDIF |
| 202 |
#endif /* ALLOW_OBCS */ |
| 203 |
|
| 204 |
#endif /* ALLOW_NONHYDROSTATIC */ |
| 205 |
|
| 206 |
RETURN |
| 207 |
END |
| 208 |
|
Parent Directory
| 
Revision Log
| 
Revision Graph