| 1 |
C $Header: /u/gcmpack/models/MITgcmUV/model/src/ini_depths.F,v 1.2 1998/04/24 02:05:41 cnh Exp $ |
| 2 |
|
| 3 |
#include "CPP_EEOPTIONS.h" |
| 4 |
|
| 5 |
CStartOfInterface |
| 6 |
SUBROUTINE INI_DEPTHS( myThid ) |
| 7 |
C /==========================================================\ |
| 8 |
C | SUBROUTINE INI_DEPTHS | |
| 9 |
C | o Initialise map of model depths | |
| 10 |
C |==========================================================| |
| 11 |
C | The depths of the bottom of the model is specified in | |
| 12 |
C | terms of an XY map with one depth for each column of | |
| 13 |
C | grid cells. Depths do not have to coincide with the | |
| 14 |
C | model levels. The model's lopping algorithm makes it | |
| 15 |
C | possible to represent arbitrary depths. | |
| 16 |
C | The mode depths map also influences the models topology | |
| 17 |
C | By default the model domain wraps around in X and Y. | |
| 18 |
C | This default doubly periodic topology is "supressed" | |
| 19 |
C | if a depth map is defined which closes off all wrap | |
| 20 |
C | around flow. | |
| 21 |
C \==========================================================/ |
| 22 |
|
| 23 |
C === Global variables === |
| 24 |
#include "SIZE.h" |
| 25 |
#include "EEPARAMS.h" |
| 26 |
#include "PARAMS.h" |
| 27 |
#include "GRID.h" |
| 28 |
|
| 29 |
C == Routine arguments == |
| 30 |
C myThid - Number of this instance of INI_DEPTHS |
| 31 |
INTEGER myThid |
| 32 |
CEndOfInterface |
| 33 |
|
| 34 |
C == Local variables == |
| 35 |
C xG, yG - Global coordinate location. |
| 36 |
C zG |
| 37 |
C zUpper - Work arrays for upper and lower |
| 38 |
C zLower cell-face heights. |
| 39 |
C phi - Temporary scalar |
| 40 |
C iG, jG - Global coordinate index |
| 41 |
C bi,bj - Loop counters |
| 42 |
C zUpper - Temporary arrays holding z coordinates of |
| 43 |
C zLower upper and lower faces. |
| 44 |
C I,J,K |
| 45 |
_RL xG, yG, zG |
| 46 |
_RL phi |
| 47 |
_RL zUpper(Nz), zLower(Nz) |
| 48 |
INTEGER iG, jG |
| 49 |
INTEGER bi, bj |
| 50 |
INTEGER I, J, K |
| 51 |
|
| 52 |
C For now set up a flat bottom box with doubly periodic topology. |
| 53 |
C H is the basic variable from which other terms are derived. It |
| 54 |
C is the term that would be set from an external file for a |
| 55 |
C realistic problem. |
| 56 |
_BARRIER |
| 57 |
phi = 0. D0 |
| 58 |
DO K=1,Nz |
| 59 |
phi = phi+delZ(K) |
| 60 |
ENDDO |
| 61 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 62 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 63 |
DO j=1,sNy |
| 64 |
DO i=1,sNx |
| 65 |
iG = myXGlobalLo-1+(bi-1)*sNx+I |
| 66 |
jG = myYGlobalLo-1+(bj-1)*sNy+J |
| 67 |
C Default depth of full domain |
| 68 |
H(i,j,bi,bj) = phi |
| 69 |
C Test for eastern edge |
| 70 |
IF ( iG .EQ. nX ) H(i,j,bi,bj) = 0. |
| 71 |
C Test for northern edge |
| 72 |
IF ( jG .EQ. nY ) H(i,j,bi,bj) = 0. |
| 73 |
C Island |
| 74 |
IF ( iG .EQ. 1 .AND. |
| 75 |
& jG .EQ. 24 ) H(i,j,bi,bj) = 0.75*phi |
| 76 |
C IF ( iG .EQ. 1 .AND. |
| 77 |
C & jG .EQ. 24 ) H(i,j,bi,bj) = 0. |
| 78 |
|
| 79 |
ENDDO |
| 80 |
ENDDO |
| 81 |
ENDDO |
| 82 |
ENDDO |
| 83 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 84 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 85 |
DO J=1,sNy |
| 86 |
DO I=1,sNx |
| 87 |
C Inverse of depth |
| 88 |
IF ( h(i,j,bi,bj) .EQ. 0. _d 0 ) THEN |
| 89 |
rH(i,j,bi,bj) = 0. _d 0 |
| 90 |
ELSE |
| 91 |
rH(i,j,bi,bj) = 1. _d 0 / h(i,j,bi,bj) |
| 92 |
ENDIF |
| 93 |
ENDDO |
| 94 |
ENDDO |
| 95 |
ENDDO |
| 96 |
ENDDO |
| 97 |
_EXCH_XY_R4( H, myThid ) |
| 98 |
_EXCH_XY_R4( rH, myThid ) |
| 99 |
|
| 100 |
C-- Now calculate "lopping" factors hFac. |
| 101 |
zG = delZ(1)*0.5 D0 |
| 102 |
zFace(1) = 0 |
| 103 |
rDzC(1) = 2. _d 0/delZ(1) |
| 104 |
DO K=1,Nz-1 |
| 105 |
saFac(K) = 1. D0 |
| 106 |
zC(K) = zG |
| 107 |
zG = zG + (delZ(K)+delZ(K+1))*0.5 D0 |
| 108 |
zFace(K+1) = zFace(K)+delZ(K) |
| 109 |
rDzC(K+1) = 2. _d 0/(delZ(K)+delZ(K+1)) |
| 110 |
ENDDO |
| 111 |
zC(Nz) = zG |
| 112 |
zFace(Nz+1) = zFace(Nz)+delZ(Nz) |
| 113 |
DO K=1,Nz |
| 114 |
zUpper(K) = zFace(K) |
| 115 |
zLower(K) = zFace(K+1) |
| 116 |
dzF(K) = delz(K) |
| 117 |
rdzF(K) = 1.d0/dzF(K) |
| 118 |
ENDDO |
| 119 |
DO bj=myByLo(myThid), myByHi(myThid) |
| 120 |
DO bi=myBxLo(myThid), myBxHi(myThid) |
| 121 |
DO K=1, Nz |
| 122 |
DO J=1,sNy |
| 123 |
DO I=1,sNx |
| 124 |
hFacC(I,J,K,bi,bj) = 1. |
| 125 |
IF ( H(I,J,bi,bj) .LE. zUpper(K) ) THEN |
| 126 |
C Below base of domain |
| 127 |
hFacC(I,J,K,bi,bj) = 0. |
| 128 |
ELSEIF ( H(I,J,bi,bj) .GT. zLower(K) ) THEN |
| 129 |
C Base of domain is below this cell |
| 130 |
hFacC(I,J,K,bi,bj) = 1. |
| 131 |
ELSE |
| 132 |
C Base of domain is in this cell |
| 133 |
C Set hFac tp the fraction of the cell that is open. |
| 134 |
phi = zUpper(K)-H(I,J,bi,bj) |
| 135 |
hFacC(I,J,K,bi,bj) = phi/(zUpper(K)-zLower(K)) |
| 136 |
ENDIF |
| 137 |
ENDDO |
| 138 |
ENDDO |
| 139 |
ENDDO |
| 140 |
ENDDO |
| 141 |
ENDDO |
| 142 |
_EXCH_XYZ_R4(hFacC , myThid ) |
| 143 |
|
| 144 |
DO bj=myByLo(myThid), myByHi(myThid) |
| 145 |
DO bi=myBxLo(myThid), myBxHi(myThid) |
| 146 |
DO K=1, Nz |
| 147 |
DO J=1,sNy |
| 148 |
DO I=1,sNx |
| 149 |
hFacW(I,J,K,bi,bj)= |
| 150 |
& MIN(hFacC(I,J,K,bi,bj),hFacC(I-1,J,K,bi,bj)) |
| 151 |
hFacS(I,J,K,bi,bj)= |
| 152 |
& MIN(hFacC(I,J,K,bi,bj),hFacC(I,J-1,K,bi,bj)) |
| 153 |
ENDDO |
| 154 |
ENDDO |
| 155 |
ENDDO |
| 156 |
ENDDO |
| 157 |
ENDDO |
| 158 |
_EXCH_XYZ_R4(hFacW , myThid ) |
| 159 |
_EXCH_XYZ_R4(hFacS , myThid ) |
| 160 |
|
| 161 |
C-- Calculate recipricols of hFacC, hFacW and hFacS |
| 162 |
DO bj=myByLo(myThid), myByHi(myThid) |
| 163 |
DO bi=myBxLo(myThid), myBxHi(myThid) |
| 164 |
DO K=1, Nz |
| 165 |
DO J=1,sNy |
| 166 |
DO I=1,sNx |
| 167 |
rhFacC(I,J,K,bi,bj)=0. D0 |
| 168 |
if (hFacC(I,J,K,bi,bj).ne.0.) |
| 169 |
& rhFacC(I,J,K,bi,bj)=1. D0 /hFacC(I,J,K,bi,bj) |
| 170 |
rhFacW(I,J,K,bi,bj)=0. D0 |
| 171 |
if (hFacW(I,J,K,bi,bj).ne.0.) |
| 172 |
& rhFacW(I,J,K,bi,bj)=1. D0 /hFacW(I,J,K,bi,bj) |
| 173 |
rhFacS(I,J,K,bi,bj)=0. D0 |
| 174 |
if (hFacS(I,J,K,bi,bj).ne.0.) |
| 175 |
& rhFacS(I,J,K,bi,bj)=1. D0 /hFacS(I,J,K,bi,bj) |
| 176 |
ENDDO |
| 177 |
ENDDO |
| 178 |
ENDDO |
| 179 |
ENDDO |
| 180 |
ENDDO |
| 181 |
_EXCH_XYZ_R4(rhFacC , myThid ) |
| 182 |
_EXCH_XYZ_R4(rhFacW , myThid ) |
| 183 |
_EXCH_XYZ_R4(rhFacS , myThid ) |
| 184 |
C |
| 185 |
RETURN |
| 186 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph