| 1 |
cnh |
1.2 |
C $Header: /u/gcmpack/models/MITgcmUV/model/src/ini_p_ground.F,v 1.1 2001/07/06 21:48:31 jmc Exp $ |
| 2 |
jmc |
1.1 |
C $Name: $ |
| 3 |
|
|
|
| 4 |
|
|
#include "CPP_OPTIONS.h" |
| 5 |
|
|
|
| 6 |
cnh |
1.2 |
CBOP |
| 7 |
|
|
C !ROUTINE: INI_P_GROUND |
| 8 |
|
|
C !INTERFACE: |
| 9 |
jmc |
1.1 |
SUBROUTINE INI_P_GROUND( |
| 10 |
|
|
I Hfld, |
| 11 |
|
|
O Pfld, |
| 12 |
|
|
I myThid ) |
| 13 |
cnh |
1.2 |
C !DESCRIPTION: \bv |
| 14 |
|
|
C *==========================================================* |
| 15 |
|
|
C | SUBROUTINE INI_P_GROUND |
| 16 |
|
|
C | o Convert Topography [m] to (reference) Surface Pressure |
| 17 |
|
|
C | according to tRef profile, |
| 18 |
|
|
C | using same discretisation as in calc_phi_hyd |
| 19 |
|
|
C | |
| 20 |
|
|
C *==========================================================* |
| 21 |
|
|
C \ev |
| 22 |
|
|
|
| 23 |
|
|
C !USES: |
| 24 |
jmc |
1.1 |
IMPLICIT NONE |
| 25 |
|
|
C == Global variables == |
| 26 |
|
|
#include "SIZE.h" |
| 27 |
|
|
#include "GRID.h" |
| 28 |
|
|
#include "EEPARAMS.h" |
| 29 |
|
|
#include "PARAMS.h" |
| 30 |
|
|
|
| 31 |
cnh |
1.2 |
C !INPUT/OUTPUT PARAMETERS: |
| 32 |
jmc |
1.1 |
C == Routine arguments == |
| 33 |
cnh |
1.2 |
C Hfld (input) :: Ground elevation [m] |
| 34 |
|
|
C Pfld (output) :: reference Pressure at the ground [Pa] |
| 35 |
jmc |
1.1 |
_RS Hfld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 36 |
|
|
_RS Pfld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 37 |
|
|
INTEGER myThid |
| 38 |
|
|
|
| 39 |
|
|
c #ifdef INCLUDE_PHIHYD_CALCULATION_CODE |
| 40 |
|
|
|
| 41 |
cnh |
1.2 |
C !LOCAL VARIABLES: |
| 42 |
jmc |
1.1 |
C == Local variables == |
| 43 |
|
|
INTEGER bi,bj,i,j,K, Ks |
| 44 |
|
|
_RL ddPI, Po_surf |
| 45 |
|
|
_RL phiRef(2*Nr+1), rHalf(2*Nr+1) |
| 46 |
cnh |
1.2 |
CEOP |
| 47 |
jmc |
1.1 |
|
| 48 |
|
|
DO K=1,Nr |
| 49 |
|
|
rHalf(2*K-1) = rF(K) |
| 50 |
|
|
rHalf(2*K) = rC(K) |
| 51 |
|
|
ENDDO |
| 52 |
|
|
rHalf(2*Nr+1) = rF(Nr+1) |
| 53 |
|
|
|
| 54 |
|
|
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 55 |
|
|
C- Compute Reference Geopotential at Half levels : |
| 56 |
|
|
C Tracer level: phiRef(2K) ; Interface_W level: phiRef(2K+1) |
| 57 |
|
|
|
| 58 |
|
|
phiRef(1) = 0. |
| 59 |
|
|
|
| 60 |
|
|
IF (Integr_GeoPot.EQ.1) THEN |
| 61 |
|
|
C- Finite Volume Form, linear by half level : |
| 62 |
|
|
DO K=1,2*Nr |
| 63 |
|
|
Ks = (K+1)/2 |
| 64 |
|
|
ddPI=atm_cp*( ((rHalf( K )/atm_po)**atm_kappa) |
| 65 |
|
|
& -((rHalf(K+1)/atm_po)**atm_kappa) ) |
| 66 |
|
|
phiRef(K+1) = phiRef(K)+ddPI*tRef(Ks) |
| 67 |
|
|
ENDDO |
| 68 |
|
|
C------ |
| 69 |
|
|
ELSE |
| 70 |
|
|
C- Finite Difference Form, linear between Tracer level : |
| 71 |
|
|
C works with Integr_GeoPot = 0, 2 or 3 |
| 72 |
|
|
K = 1 |
| 73 |
|
|
ddPI=atm_cp*( ((rF(K)/atm_po)**atm_kappa) |
| 74 |
|
|
& -((rC(K)/atm_po)**atm_kappa) ) |
| 75 |
|
|
phiRef(2*K) = phiRef(1) + ddPI*tRef(K) |
| 76 |
|
|
DO K=1,Nr-1 |
| 77 |
|
|
ddPI=atm_cp*( ((rC( K )/atm_po)**atm_kappa) |
| 78 |
|
|
& -((rC(K+1)/atm_po)**atm_kappa) ) |
| 79 |
|
|
phiRef(2*K+1) = phiRef(2*K) + ddPI*0.5*tRef(K) |
| 80 |
|
|
phiRef(2*K+2) = phiRef(2*K) |
| 81 |
|
|
& + ddPI*0.5*(tRef(K)+tRef(K+1)) |
| 82 |
|
|
ENDDO |
| 83 |
|
|
K = Nr |
| 84 |
|
|
ddPI=atm_cp*( ((rC( K )/atm_po)**atm_kappa) |
| 85 |
|
|
& -((rF(K+1)/atm_po)**atm_kappa) ) |
| 86 |
|
|
phiRef(2*K+1) = phiRef(2*K) + ddPI*tRef(K) |
| 87 |
|
|
C------ |
| 88 |
|
|
ENDIF |
| 89 |
|
|
|
| 90 |
|
|
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 91 |
|
|
|
| 92 |
|
|
C- Convert phiRef to Z unit : |
| 93 |
|
|
DO K=1,2*Nr+1 |
| 94 |
|
|
phiRef(K) = phiRef(K)*recip_gravity |
| 95 |
|
|
ENDDO |
| 96 |
|
|
|
| 97 |
|
|
C- Write to check : |
| 98 |
|
|
write(6,'(2A)') 'INI_P_GROUND: PhiRef/g [m] at Center ', |
| 99 |
|
|
& '(integer) and Interface (half-int.) levels:' |
| 100 |
|
|
DO K=1,2*Nr+1 |
| 101 |
|
|
write(6,'(A,F5.1,A,F10.1,A,F12.3)') ' K=', K*0.5, |
| 102 |
|
|
& ' ; r=', rHalf(K), ' ; phiRef/g=', phiRef(K) |
| 103 |
|
|
ENDDO |
| 104 |
|
|
|
| 105 |
|
|
C- Find Po_surf : Linear between 2 half levels : |
| 106 |
|
|
DO bj = myByLo(myThid), myByHi(myThid) |
| 107 |
|
|
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 108 |
|
|
DO j=1,sNy |
| 109 |
|
|
DO i=1,sNx |
| 110 |
|
|
Ks = 1 |
| 111 |
|
|
DO K=1,2*Nr |
| 112 |
|
|
IF (Hfld(i,j,bi,bj).GE.phiRef(K)) Ks = K |
| 113 |
|
|
ENDDO |
| 114 |
|
|
Po_surf = rHalf(Ks) + (rHalf(Ks+1)-rHalf(Ks))* |
| 115 |
|
|
& (Hfld(i,j,bi,bj)-phiRef(Ks))/(phiRef(Ks+1)-phiRef(Ks)) |
| 116 |
|
|
|
| 117 |
|
|
c IF (Hfld(i,j,bi,bj).LT.phiRef(1)) Po_surf= rHalf(1) |
| 118 |
|
|
c IF (Hfld(i,j,bi,bj).GT.phiRef(2*Nr+1)) Po_surf= rHalf(2*Nr+1) |
| 119 |
|
|
Pfld(i,j,bi,bj) = Po_surf |
| 120 |
|
|
ENDDO |
| 121 |
|
|
ENDDO |
| 122 |
|
|
ENDDO |
| 123 |
|
|
ENDDO |
| 124 |
|
|
|
| 125 |
|
|
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 126 |
|
|
|
| 127 |
|
|
c #endif/* INCLUDE_PHIHYD_CALCULATION_CODE */ |
| 128 |
|
|
|
| 129 |
|
|
RETURN |
| 130 |
|
|
END |
Parent Directory
| 
Revision Log
| 
Revision Graph