| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/land/land_ini_vars.F,v 1.6 2006/08/13 22:56:17 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "LAND_OPTIONS.h" |
| 5 |
|
| 6 |
CBOP |
| 7 |
C !ROUTINE: LAND_INI_VARS |
| 8 |
C !INTERFACE: |
| 9 |
SUBROUTINE LAND_INI_VARS( myThid ) |
| 10 |
|
| 11 |
C !DESCRIPTION: \bv |
| 12 |
C *==========================================================* |
| 13 |
C | S/R LAND_INI_VARS |
| 14 |
C | o Initialize Land package variables |
| 15 |
C *==========================================================* |
| 16 |
C | for now, used only for a restart |
| 17 |
C *==========================================================* |
| 18 |
C \ev |
| 19 |
|
| 20 |
C !USES: |
| 21 |
IMPLICIT NONE |
| 22 |
|
| 23 |
C == Global variables === |
| 24 |
|
| 25 |
C-- size for MITgcm & Land package : |
| 26 |
#include "LAND_SIZE.h" |
| 27 |
|
| 28 |
#include "EEPARAMS.h" |
| 29 |
#include "PARAMS.h" |
| 30 |
#include "LAND_PARAMS.h" |
| 31 |
#include "LAND_VARS.h" |
| 32 |
|
| 33 |
C !INPUT/OUTPUT PARAMETERS: |
| 34 |
C == Routine Arguments == |
| 35 |
C myThid - Number of this instance |
| 36 |
INTEGER myThid |
| 37 |
CEOP |
| 38 |
|
| 39 |
#ifdef ALLOW_LAND |
| 40 |
|
| 41 |
C == Local Variables == |
| 42 |
C msgBuf - Informational/error meesage buffer |
| 43 |
C i,j,k,bi,bj :: loop indices |
| 44 |
C grd_HeatCp :: Heat capacity of the ground (J/m3/K) |
| 45 |
C mWater :: water content of the ground (kg/m3) |
| 46 |
C temp_af :: ground temperature if above freezing |
| 47 |
C temp_bf :: ground temperature if below freezing |
| 48 |
c CHARACTER*(MAX_LEN_MBUF) msgBuf |
| 49 |
INTEGER i,j,k,bi,bj |
| 50 |
_RL grd_HeatCp, mWater |
| 51 |
_RL temp_af, temp_bf |
| 52 |
|
| 53 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 54 |
|
| 55 |
C-- Initialize Land package variables |
| 56 |
|
| 57 |
C- Over all tiles |
| 58 |
DO bj = myByLo(myThid), myByHi(myThid) |
| 59 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 60 |
|
| 61 |
C- 3D arrays |
| 62 |
DO k=1,land_nLev |
| 63 |
DO J=1-Oly,sNy+Oly |
| 64 |
DO I=1-Olx,sNx+Olx |
| 65 |
land_groundT(i,j,k,bi,bj) = 0. _d 0 |
| 66 |
land_enthalp(i,j,k,bi,bj) = 0. _d 0 |
| 67 |
land_groundW(i,j,k,bi,bj) = 0. _d 0 |
| 68 |
ENDDO |
| 69 |
ENDDO |
| 70 |
ENDDO |
| 71 |
|
| 72 |
C- 2D arrays |
| 73 |
DO J=1-Oly,sNy+Oly |
| 74 |
DO I=1-Olx,sNx+Olx |
| 75 |
land_skinT (i,j,bi,bj) = 0. _d 0 |
| 76 |
land_hSnow (i,j,bi,bj) = 0. _d 0 |
| 77 |
land_snowAge(i,j,bi,bj) = 0. _d 0 |
| 78 |
land_runOff (i,j,bi,bj) = 0. _d 0 |
| 79 |
land_enRnOf (i,j,bi,bj) = 0. _d 0 |
| 80 |
land_HeatFLx(i,j,bi,bj) = 0. _d 0 |
| 81 |
land_Pr_m_Ev(i,j,bi,bj) = 0. _d 0 |
| 82 |
land_EnWFlux(i,j,bi,bj) = 0. _d 0 |
| 83 |
ENDDO |
| 84 |
ENDDO |
| 85 |
|
| 86 |
C- end bi,bj loops |
| 87 |
ENDDO |
| 88 |
ENDDO |
| 89 |
|
| 90 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 91 |
|
| 92 |
C- Need to synchronize here before doing master-thread IO |
| 93 |
_BARRIER |
| 94 |
|
| 95 |
IF ( startTime.EQ.baseTime .AND. nIter0.EQ.0 ) THEN |
| 96 |
|
| 97 |
C-- Define the initial state : read from file |
| 98 |
IF ( land_grT_iniFile .NE. ' ' ) THEN |
| 99 |
CALL READ_REC_3D_RL( land_grT_iniFile, readBinaryPrec, |
| 100 |
& land_nLev, land_groundT, 1, nIter0, myThid ) |
| 101 |
ENDIF |
| 102 |
IF ( land_grW_iniFile .NE. ' ' ) THEN |
| 103 |
CALL READ_REC_3D_RL( land_grW_iniFile, readBinaryPrec, |
| 104 |
& land_nLev, land_groundW, 1, nIter0, myThid ) |
| 105 |
ENDIF |
| 106 |
IF ( land_snow_iniFile .NE. ' ' ) THEN |
| 107 |
CALL READ_FLD_XY_RL( land_snow_iniFile, ' ', |
| 108 |
& land_hSnow, nIter0, myThid ) |
| 109 |
ENDIF |
| 110 |
|
| 111 |
ELSEIF ( land_calc_grT .OR. land_calc_grW ) THEN |
| 112 |
|
| 113 |
C-- Read Land package state variables from pickup file |
| 114 |
CALL LAND_READ_PICKUP( nIter0, myThid ) |
| 115 |
|
| 116 |
c ELSE |
| 117 |
C- a trick to allow to start without a land pickup: |
| 118 |
C load grT & grW from AIM surf. BC in S/R aim_land2aim |
| 119 |
ENDIF |
| 120 |
|
| 121 |
C- Every one else must wait until loading is done. |
| 122 |
_BARRIER |
| 123 |
|
| 124 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 125 |
|
| 126 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 127 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 128 |
|
| 129 |
C- to have a consistent initial state: set surface Temp & enthalpy |
| 130 |
C assuming all the water in 1 phase only (solid or liquid): |
| 131 |
IF ( ( startTime.EQ.baseTime .AND. nIter0.EQ.0 ) .OR. |
| 132 |
& .NOT.( land_calc_grT .OR. land_calc_grW ) .OR. |
| 133 |
& land_oldPickup ) THEN |
| 134 |
DO j=1,sNy |
| 135 |
DO i=1,sNx |
| 136 |
c IF ( land_frc(i,j,bi,bj).GT.0. ) THEN |
| 137 |
DO k=1,land_nLev |
| 138 |
mWater = land_rhoLiqW*land_waterCap |
| 139 |
& *land_groundW(i,j,k,bi,bj) |
| 140 |
grd_HeatCp = land_heatCs + land_CpWater*mWater |
| 141 |
land_enthalp(i,j,k,bi,bj) = |
| 142 |
& grd_HeatCp*land_groundT(i,j,k,bi,bj) |
| 143 |
IF (land_groundT(i,j,k,bi,bj).LT. 0. _d 0) |
| 144 |
& land_enthalp(i,j,k,bi,bj) = land_enthalp(i,j,k,bi,bj) |
| 145 |
& - land_Lfreez*mWater |
| 146 |
ENDDO |
| 147 |
land_skinT(i,j,bi,bj) = land_groundT(i,j,1,bi,bj) |
| 148 |
c ENDIF |
| 149 |
ENDDO |
| 150 |
ENDDO |
| 151 |
ELSE |
| 152 |
DO j=1,sNy |
| 153 |
DO i=1,sNx |
| 154 |
DO k=1,land_nLev |
| 155 |
mWater = land_rhoLiqW*land_waterCap |
| 156 |
& *land_groundW(i,j,k,bi,bj) |
| 157 |
grd_HeatCp = land_heatCs + land_CpWater*mWater |
| 158 |
C temperature if below freezing: |
| 159 |
temp_bf = (land_enthalp(i,j,k,bi,bj)+land_Lfreez*mWater) |
| 160 |
& / grd_HeatCp |
| 161 |
C temperature if above freezing: |
| 162 |
temp_af = land_enthalp(i,j,k,bi,bj) / grd_HeatCp |
| 163 |
land_groundT(i,j,k,bi,bj) = |
| 164 |
& MIN( temp_bf, MAX(temp_af, 0. _d 0) ) |
| 165 |
ENDDO |
| 166 |
ENDDO |
| 167 |
ENDDO |
| 168 |
ENDIF |
| 169 |
|
| 170 |
C- end bi,bj loops |
| 171 |
ENDDO |
| 172 |
ENDDO |
| 173 |
|
| 174 |
#endif /* ALLOW_LAND */ |
| 175 |
|
| 176 |
RETURN |
| 177 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph