| 1 |
C $Header: /u/gcmpack/models/MITgcmUV/model/src/ini_masks_etc.F,v 1.14 1998/12/10 00:16:16 adcroft Exp $ |
| 2 |
|
| 3 |
#include "CPP_OPTIONS.h" |
| 4 |
|
| 5 |
CStartOfInterface |
| 6 |
SUBROUTINE INI_MASKS_ETC( myThid ) |
| 7 |
C /==========================================================\ |
| 8 |
C | SUBROUTINE INI_MASKS_ETC | |
| 9 |
C | o Initialise masks and topography factors | |
| 10 |
C |==========================================================| |
| 11 |
C | These arrays are used throughout the code and describe | |
| 12 |
C | the topography of the domain through masks (0s and 1s) | |
| 13 |
C | and fractional height factors (0<hFac<1). The latter | |
| 14 |
C | distinguish between the lopped-cell and full-step | |
| 15 |
C | topographic representations. | |
| 16 |
C \==========================================================/ |
| 17 |
IMPLICIT NONE |
| 18 |
|
| 19 |
C === Global variables === |
| 20 |
#include "SIZE.h" |
| 21 |
#include "EEPARAMS.h" |
| 22 |
#include "PARAMS.h" |
| 23 |
#include "GRID.h" |
| 24 |
|
| 25 |
C == Routine arguments == |
| 26 |
C myThid - Number of this instance of INI_MASKS_ETC |
| 27 |
INTEGER myThid |
| 28 |
CEndOfInterface |
| 29 |
|
| 30 |
C == Local variables == |
| 31 |
C bi,bj - Loop counters |
| 32 |
C I,J,K |
| 33 |
INTEGER bi, bj |
| 34 |
INTEGER I, J, K |
| 35 |
#ifdef ALLOW_NONHYDROSTATIC |
| 36 |
INTEGER Km1 |
| 37 |
_RL hFacUpper,hFacLower |
| 38 |
#endif |
| 39 |
|
| 40 |
C Calculate quantities derived from XY depth map |
| 41 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 42 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 43 |
DO J=1,sNy |
| 44 |
DO I=1,sNx |
| 45 |
C Inverse of depth |
| 46 |
IF ( h(i,j,bi,bj) .EQ. 0. _d 0 ) THEN |
| 47 |
recip_H(i,j,bi,bj) = 0. _d 0 |
| 48 |
ELSE |
| 49 |
recip_H(i,j,bi,bj) = 1. _d 0 / abs( H(i,j,bi,bj) ) |
| 50 |
ENDIF |
| 51 |
depthInK(i,j,bi,bj) = 0. |
| 52 |
ENDDO |
| 53 |
ENDDO |
| 54 |
ENDDO |
| 55 |
ENDDO |
| 56 |
_EXCH_XY_R4( recip_H, myThid ) |
| 57 |
|
| 58 |
C Calculate lopping factor hFacC |
| 59 |
DO bj=myByLo(myThid), myByHi(myThid) |
| 60 |
DO bi=myBxLo(myThid), myBxHi(myThid) |
| 61 |
DO K=1, Nr |
| 62 |
DO J=1,sNy |
| 63 |
DO I=1,sNx |
| 64 |
C Round depths within a small fraction of layer depth to that |
| 65 |
C layer depth. |
| 66 |
IF ( ABS(H(I,J,bi,bj)-rF(K)) .LT. |
| 67 |
& 1. _d -6*ABS(rF(K)) .AND. |
| 68 |
& ABS(H(I,J,bi,bj)-rF(K)) .LT. |
| 69 |
& 1. _d -6*ABS(H(I,J,bi,bj)) )THEN |
| 70 |
H(I,J,bi,bj) = rF(K) |
| 71 |
ENDIF |
| 72 |
IF ( H(I,J,bi,bj)*rkFac .GE. rF(K)*rkFac ) THEN |
| 73 |
C Top of cell is below base of domain |
| 74 |
hFacC(I,J,K,bi,bj) = 0. |
| 75 |
ELSEIF ( H(I,J,bi,bj)*rkFac .LE. rF(K+1)*rkFac ) THEN |
| 76 |
C Base of domain is below bottom of this cell |
| 77 |
hFacC(I,J,K,bi,bj) = 1. |
| 78 |
ELSE |
| 79 |
C Base of domain is in this cell |
| 80 |
C Set hFac to the fraction of the cell that is open. |
| 81 |
hFacC(I,J,K,bi,bj) = |
| 82 |
& (rF(K)*rkFac-H(I,J,bi,bj)*rkFac)*recip_drF(K) |
| 83 |
ENDIF |
| 84 |
C Impose minimum fraction |
| 85 |
IF (hFacC(I,J,K,bi,bj).LT.hFacMin) THEN |
| 86 |
IF (hFacC(I,J,K,bi,bj).LT.hFacMin*0.5) THEN |
| 87 |
hFacC(I,J,K,bi,bj)=0. |
| 88 |
ELSE |
| 89 |
hFacC(I,J,K,bi,bj)=hFacMin |
| 90 |
ENDIF |
| 91 |
ENDIF |
| 92 |
C Impose minimum size (dimensional) |
| 93 |
IF (drF(k)*hFacC(I,J,K,bi,bj).LT.hFacMinDr) THEN |
| 94 |
IF (drF(k)*hFacC(I,J,K,bi,bj).LT.hFacMinDr*0.5) THEN |
| 95 |
hFacC(I,J,K,bi,bj)=0. |
| 96 |
ELSE |
| 97 |
hFacC(I,J,K,bi,bj)=hFacMinDr*recip_drF(k) |
| 98 |
ENDIF |
| 99 |
ENDIF |
| 100 |
depthInK(i,j,bi,bj) = depthInK(i,j,bi,bj) |
| 101 |
& +hFacC(i,j,k,bi,bj) |
| 102 |
ENDDO |
| 103 |
ENDDO |
| 104 |
ENDDO |
| 105 |
ENDDO |
| 106 |
ENDDO |
| 107 |
_EXCH_XYZ_R4(hFacC , myThid ) |
| 108 |
_EXCH_XY_R4( depthInK, myThid ) |
| 109 |
|
| 110 |
CALL PLOT_FIELD_XYRS( depthInK, |
| 111 |
& 'Model Depths K Index' , 1, myThid ) |
| 112 |
|
| 113 |
C hFacW and hFacS (at U and V points) |
| 114 |
DO bj=myByLo(myThid), myByHi(myThid) |
| 115 |
DO bi=myBxLo(myThid), myBxHi(myThid) |
| 116 |
DO K=1, Nr |
| 117 |
DO J=1,sNy |
| 118 |
DO I=1,sNx |
| 119 |
hFacW(I,J,K,bi,bj)= |
| 120 |
& MIN(hFacC(I,J,K,bi,bj),hFacC(I-1,J,K,bi,bj)) |
| 121 |
hFacS(I,J,K,bi,bj)= |
| 122 |
& MIN(hFacC(I,J,K,bi,bj),hFacC(I,J-1,K,bi,bj)) |
| 123 |
ENDDO |
| 124 |
ENDDO |
| 125 |
ENDDO |
| 126 |
ENDDO |
| 127 |
ENDDO |
| 128 |
_EXCH_XYZ_R4(hFacW , myThid ) |
| 129 |
_EXCH_XYZ_R4(hFacS , myThid ) |
| 130 |
|
| 131 |
C Masks and reciprocals of hFac[CWS] |
| 132 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 133 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 134 |
DO K=1,Nr |
| 135 |
DO J=1,sNy |
| 136 |
DO I=1,sNx |
| 137 |
IF (HFacC(I,J,K,bi,bj) .NE. 0. _d 0 ) THEN |
| 138 |
recip_HFacC(I,J,K,bi,bj) = 1. _d 0 / HFacC(I,J,K,bi,bj) |
| 139 |
ELSE |
| 140 |
recip_HFacC(I,J,K,bi,bj) = 0. _d 0 |
| 141 |
ENDIF |
| 142 |
IF (HFacW(I,J,K,bi,bj) .NE. 0. _d 0 ) THEN |
| 143 |
recip_HFacW(I,J,K,bi,bj) = 1. _d 0 / HFacW(I,J,K,bi,bj) |
| 144 |
maskW(I,J,K,bi,bj) = 1. _d 0 |
| 145 |
ELSE |
| 146 |
recip_HFacW(I,J,K,bi,bj) = 0. _d 0 |
| 147 |
maskW(I,J,K,bi,bj) = 0.0 _d 0 |
| 148 |
ENDIF |
| 149 |
IF (HFacS(I,J,K,bi,bj) .NE. 0. _d 0 ) THEN |
| 150 |
recip_HFacS(I,J,K,bi,bj) = 1. _d 0 / HFacS(I,J,K,bi,bj) |
| 151 |
maskS(I,J,K,bi,bj) = 1. _d 0 |
| 152 |
ELSE |
| 153 |
recip_HFacS(I,J,K,bi,bj) = 0. _d 0 |
| 154 |
maskS(I,J,K,bi,bj) = 0. _d 0 |
| 155 |
ENDIF |
| 156 |
ENDDO |
| 157 |
ENDDO |
| 158 |
ENDDO |
| 159 |
ENDDO |
| 160 |
ENDDO |
| 161 |
_EXCH_XYZ_R4(recip_HFacC , myThid ) |
| 162 |
_EXCH_XYZ_R4(recip_HFacW , myThid ) |
| 163 |
_EXCH_XYZ_R4(recip_HFacS , myThid ) |
| 164 |
_EXCH_XYZ_R4(maskW , myThid ) |
| 165 |
_EXCH_XYZ_R4(maskS , myThid ) |
| 166 |
|
| 167 |
C Calculate recipricols grid lengths |
| 168 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 169 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 170 |
DO J=1,sNy |
| 171 |
DO I=1,sNx |
| 172 |
recip_dxG(I,J,bi,bj)=1.d0/dxG(I,J,bi,bj) |
| 173 |
recip_dyG(I,J,bi,bj)=1.d0/dyG(I,J,bi,bj) |
| 174 |
recip_dxC(I,J,bi,bj)=1.d0/dxC(I,J,bi,bj) |
| 175 |
recip_dyC(I,J,bi,bj)=1.d0/dyC(I,J,bi,bj) |
| 176 |
recip_dxF(I,J,bi,bj)=1.d0/dxF(I,J,bi,bj) |
| 177 |
recip_dyF(I,J,bi,bj)=1.d0/dyF(I,J,bi,bj) |
| 178 |
recip_dxV(I,J,bi,bj)=1.d0/dxV(I,J,bi,bj) |
| 179 |
recip_dyU(I,J,bi,bj)=1.d0/dyU(I,J,bi,bj) |
| 180 |
ENDDO |
| 181 |
ENDDO |
| 182 |
ENDDO |
| 183 |
ENDDO |
| 184 |
_EXCH_XY_R4(recip_dxG, myThid ) |
| 185 |
_EXCH_XY_R4(recip_dyG, myThid ) |
| 186 |
_EXCH_XY_R4(recip_dxC, myThid ) |
| 187 |
_EXCH_XY_R4(recip_dyC, myThid ) |
| 188 |
_EXCH_XY_R4(recip_dxF, myThid ) |
| 189 |
_EXCH_XY_R4(recip_dyF, myThid ) |
| 190 |
_EXCH_XY_R4(recip_dxV, myThid ) |
| 191 |
_EXCH_XY_R4(recip_dyU, myThid ) |
| 192 |
|
| 193 |
#ifdef ALLOW_NONHYDROSTATIC |
| 194 |
C-- Calculate the reciprocal hfac distance/volume for W cells |
| 195 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 196 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 197 |
DO K=1,Nr |
| 198 |
Km1=max(K-1,1) |
| 199 |
hFacUpper=drF(Km1)/(drF(Km1)+drF(K)) |
| 200 |
IF (Km1.EQ.K) hFacUpper=0. |
| 201 |
hFacLower=drF(K)/(drF(Km1)+drF(K)) |
| 202 |
DO J=1,sNy |
| 203 |
DO I=1,sNx |
| 204 |
IF (hFacC(I,J,K,bi,bj).NE.0.) THEN |
| 205 |
IF (hFacC(I,J,K,bi,bj).LE.0.5) THEN |
| 206 |
recip_hFacU(I,J,K,bi,bj)= |
| 207 |
& hFacUpper+hFacLower*hFacC(I,J,K,bi,bj) |
| 208 |
ELSE |
| 209 |
recip_hFacU(I,J,K,bi,bj)=1. |
| 210 |
ENDIF |
| 211 |
ELSE |
| 212 |
recip_hFacU(I,J,K,bi,bj)=0. |
| 213 |
ENDIF |
| 214 |
IF (recip_hFacU(I,J,K,bi,bj).NE.0.) |
| 215 |
& recip_hFacU(I,J,K,bi,bj)=1./recip_hFacU(I,J,K,bi,bj) |
| 216 |
ENDDO |
| 217 |
ENDDO |
| 218 |
ENDDO |
| 219 |
ENDDO |
| 220 |
ENDDO |
| 221 |
_EXCH_XY_R4(recip_hFacU, myThid ) |
| 222 |
#endif |
| 223 |
C |
| 224 |
RETURN |
| 225 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph