| 1 |
jmc |
1.1 |
C $Header: $ |
| 2 |
|
|
C $Name: $ |
| 3 |
|
|
|
| 4 |
|
|
#include "LAND_OPTIONS.h" |
| 5 |
|
|
|
| 6 |
|
|
CBOP |
| 7 |
|
|
C !ROUTINE: LAND_STEPFWD |
| 8 |
|
|
C !INTERFACE: |
| 9 |
|
|
SUBROUTINE LAND_STEPFWD( |
| 10 |
|
|
I land_frc, bi, bj, myTime, myIter, myThid) |
| 11 |
|
|
|
| 12 |
|
|
C !DESCRIPTION: \bv |
| 13 |
|
|
C *==========================================================* |
| 14 |
|
|
C | S/R LAND_STEPFWD |
| 15 |
|
|
C | o Land model main S/R: step forward land variables |
| 16 |
|
|
C *==========================================================* |
| 17 |
|
|
C \ev |
| 18 |
|
|
|
| 19 |
|
|
C !USES: |
| 20 |
|
|
IMPLICIT NONE |
| 21 |
|
|
|
| 22 |
|
|
C == Global variables === |
| 23 |
|
|
C-- size for MITgcm & Land package : |
| 24 |
|
|
#include "LAND_SIZE.h" |
| 25 |
|
|
|
| 26 |
|
|
#include "EEPARAMS.h" |
| 27 |
|
|
#include "LAND_PARAMS.h" |
| 28 |
|
|
#include "LAND_VARS.h" |
| 29 |
|
|
|
| 30 |
|
|
c #include "PARAMS.h" |
| 31 |
|
|
c #include "GRID.h" |
| 32 |
|
|
c #include "DYNVARS.h" |
| 33 |
|
|
|
| 34 |
|
|
C !INPUT/OUTPUT PARAMETERS: |
| 35 |
|
|
C == Routine arguments == |
| 36 |
|
|
C land_frc :: land fraction [0-1] |
| 37 |
|
|
C bi,bj :: Tile index |
| 38 |
|
|
C myTime :: Current time of simulation ( s ) |
| 39 |
|
|
C myIter :: Current iteration number in simulation |
| 40 |
|
|
C myThid :: Number of this instance of the routine |
| 41 |
|
|
_RS land_frc(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 42 |
|
|
INTEGER bi, bj, myIter, myThid |
| 43 |
|
|
_RL myTime |
| 44 |
|
|
CEOP |
| 45 |
|
|
|
| 46 |
|
|
#ifdef ALLOW_LAND |
| 47 |
|
|
C == Local variables == |
| 48 |
|
|
C i,j,k :: loop counters |
| 49 |
|
|
C kp1 :: k+1 |
| 50 |
|
|
C grd_HeatCp :: Heat capacity of the ground |
| 51 |
|
|
C fieldCapac :: field capacity (of water) [m] |
| 52 |
|
|
C ground_dTdt :: ground temperature tendency |
| 53 |
|
|
C ground_dWdt :: soil moisture tendency |
| 54 |
|
|
C flxkup :: downward flux, upper interface (k-1,k) |
| 55 |
|
|
C flxdwn :: downward flux, lower interface (k,k+1) |
| 56 |
|
|
C fractRunOff :: fraction of water in excess which leaves as runoff |
| 57 |
|
|
C grdWexcess :: ground water in excess [m/s] |
| 58 |
|
|
_RL grd_HeatCp, fieldCapac, ground_dTdt, ground_dWdt |
| 59 |
|
|
_RL fractRunOff, grdWexcess, groundWnp1 |
| 60 |
|
|
_RL flxkup(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 61 |
|
|
_RL flxkdw(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 62 |
|
|
INTEGER i,j,k,kp1 |
| 63 |
|
|
|
| 64 |
|
|
IF (land_calc_grT) THEN |
| 65 |
|
|
C-- Step forward ground temperature: |
| 66 |
|
|
|
| 67 |
|
|
DO k=1,land_nLev |
| 68 |
|
|
kp1 = MIN(k+1,land_nLev) |
| 69 |
|
|
|
| 70 |
|
|
IF (k.EQ.1) THEN |
| 71 |
|
|
DO j=1,sNy |
| 72 |
|
|
DO i=1,sNx |
| 73 |
|
|
flxkup(i,j) = land_HeatFlx(i,j,bi,bj) |
| 74 |
|
|
ENDDO |
| 75 |
|
|
ENDDO |
| 76 |
|
|
ELSE |
| 77 |
|
|
DO j=1,sNy |
| 78 |
|
|
DO i=1,sNx |
| 79 |
|
|
flxkup(i,j) = flxkdw(i,j) |
| 80 |
|
|
ENDDO |
| 81 |
|
|
ENDDO |
| 82 |
|
|
ENDIF |
| 83 |
|
|
|
| 84 |
|
|
DO j=1,sNy |
| 85 |
|
|
DO i=1,sNx |
| 86 |
|
|
IF ( land_frc(i,j,bi,bj).GT.0. ) THEN |
| 87 |
|
|
C- Thermal conductivity flux, lower interface (k,k+1): |
| 88 |
|
|
flxkdw(i,j) = land_grdLambda* |
| 89 |
|
|
& ( land_groundT(i,j,k,bi,bj) |
| 90 |
|
|
& -land_groundT(i,j,kp1,bi,bj) ) |
| 91 |
|
|
& *land_rec_dzC(kp1) |
| 92 |
|
|
|
| 93 |
|
|
C- Ground Heat capacity, layer k: |
| 94 |
|
|
grd_HeatCp = land_heatCs |
| 95 |
|
|
& + land_heatCw*land_groundW(i,j,k,bi,bj) |
| 96 |
|
|
& *land_waterCap |
| 97 |
|
|
|
| 98 |
|
|
C- Net temperature tendency |
| 99 |
|
|
ground_dTdt = (flxkup(i,j)-flxkdw(i,j)) |
| 100 |
|
|
& / (grd_HeatCp*land_dzF(k)) |
| 101 |
|
|
|
| 102 |
|
|
C- Step forward ground temperature, level k : |
| 103 |
|
|
land_groundT(i,j,k,bi,bj) = land_groundT(i,j,k,bi,bj) |
| 104 |
|
|
& + land_deltaT*ground_dTdt |
| 105 |
|
|
|
| 106 |
|
|
ENDIF |
| 107 |
|
|
ENDDO |
| 108 |
|
|
ENDDO |
| 109 |
|
|
|
| 110 |
|
|
ENDDO |
| 111 |
|
|
C-- step forward ground temperature: end |
| 112 |
|
|
ENDIF |
| 113 |
|
|
|
| 114 |
|
|
IF (land_calc_grW) THEN |
| 115 |
|
|
C-- Step forward ground Water: |
| 116 |
|
|
|
| 117 |
|
|
DO k=1,land_nLev |
| 118 |
|
|
IF (k.EQ.land_nLev) THEN |
| 119 |
|
|
kp1 = k |
| 120 |
|
|
fractRunOff = 1. _d 0 |
| 121 |
|
|
ELSE |
| 122 |
|
|
kp1 = k+1 |
| 123 |
|
|
fractRunOff = land_fractRunOff |
| 124 |
|
|
ENDIF |
| 125 |
|
|
fieldCapac = land_waterCap*land_dzF(k) |
| 126 |
|
|
|
| 127 |
|
|
IF (k.EQ.1) THEN |
| 128 |
|
|
DO j=1,sNy |
| 129 |
|
|
DO i=1,sNx |
| 130 |
|
|
flxkup(i,j) = land_Pr_m_Ev(i,j,bi,bj) |
| 131 |
|
|
land_runOff(i,j,bi,bj) = 0. _d 0 |
| 132 |
|
|
ENDDO |
| 133 |
|
|
ENDDO |
| 134 |
|
|
ELSE |
| 135 |
|
|
DO j=1,sNy |
| 136 |
|
|
DO i=1,sNx |
| 137 |
|
|
flxkup(i,j) = flxkdw(i,j) |
| 138 |
|
|
ENDDO |
| 139 |
|
|
ENDDO |
| 140 |
|
|
ENDIF |
| 141 |
|
|
|
| 142 |
|
|
DO j=1,sNy |
| 143 |
|
|
DO i=1,sNx |
| 144 |
|
|
IF ( land_frc(i,j,bi,bj).GT.0. ) THEN |
| 145 |
|
|
C- Diffusion flux of soil moisture, lower interface (k,k+1): |
| 146 |
|
|
flxkdw(i,j) = fieldCapac* |
| 147 |
|
|
& ( land_groundW(i,j,k,bi,bj) |
| 148 |
|
|
& -land_groundW(i,j,kp1,bi,bj) ) |
| 149 |
|
|
& / land_wTauDiff |
| 150 |
|
|
|
| 151 |
|
|
C- Net soil moisture tendency |
| 152 |
|
|
ground_dWdt = (flxkup(i,j)-flxkdw(i,j)) / fieldCapac |
| 153 |
|
|
|
| 154 |
|
|
C- Step forward soil moisture, level k : |
| 155 |
|
|
groundWnp1 = land_groundW(i,j,k,bi,bj) |
| 156 |
|
|
& + land_deltaT*ground_dWdt |
| 157 |
|
|
land_groundW(i,j,k,bi,bj) = MIN(1. _d 0, groundWnp1) |
| 158 |
|
|
|
| 159 |
|
|
C- Run off: fraction 1-fractRunOff enters level below |
| 160 |
|
|
grdWexcess = ( groundWnp1 - MIN(1. _d 0, groundWnp1) ) |
| 161 |
|
|
& *fieldCapac/land_deltaT |
| 162 |
|
|
flxkdw(i,j) = flxkdw(i,j) |
| 163 |
|
|
& + (1. _d 0-fractRunOff)*grdWexcess |
| 164 |
|
|
land_runOff(i,j,bi,bj) = land_runOff(i,j,bi,bj) |
| 165 |
|
|
& + fractRunOff*grdWexcess |
| 166 |
|
|
ENDIF |
| 167 |
|
|
ENDDO |
| 168 |
|
|
ENDDO |
| 169 |
|
|
|
| 170 |
|
|
ENDDO |
| 171 |
|
|
C-- step forward ground Water: end |
| 172 |
|
|
ENDIF |
| 173 |
|
|
|
| 174 |
|
|
#endif /* ALLOW_LAND */ |
| 175 |
|
|
|
| 176 |
|
|
RETURN |
| 177 |
|
|
END |
Parent Directory
| 
Revision Log
| 
Revision Graph