C $Header: /u/gcmpack/MITgcm/pkg/aim_v23/aim_do_physics.F,v 1.18 2010/01/21 00:10:04 jmc Exp $
C $Name: $
#include "AIM_OPTIONS.h"
CBOP
C !ROUTINE: AIM_DO_PHYSICS
C !INTERFACE:
SUBROUTINE AIM_DO_PHYSICS( myTime, myIter, myThid )
C !DESCRIPTION: \bv
C *==================================================================*
C | S/R AIM_DO_PHYSICS
C *==================================================================*
C | Interface between atmospheric physics package and the
C | dynamical model.
C | Routine calls physics pacakge after setting surface BC.
C | Package should derive and set tendency terms
C | which can be included as external forcing terms in the dynamical
C | tendency routines. Packages should communicate this information
C | through common blocks.
C *==================================================================*
C \ev
C !USES:
IMPLICIT NONE
C -------------- Global variables ------------------------------------
C-- size for MITgcm & Physics package :
#include "AIM_SIZE.h"
C-- MITgcm
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "DYNVARS.h"
#include "GRID.h"
#include "SURFACE.h"
C-- Physics package
#include "AIM_PARAMS.h"
#include "AIM_FFIELDS.h"
#include "AIM_GRID.h"
#include "com_physvar.h"
#include "com_forcing.h"
C !INPUT/OUTPUT PARAMETERS:
C == Routine arguments ==
C myTime :: Current time in simulation (s)
C myIter :: Current iteration number
C myThid :: My Thread Id. number
_RL myTime
INTEGER myIter
INTEGER myThid
CEOP
#ifdef ALLOW_AIM
C !FUNCTIONS:
C !LOCAL VARIABLES:
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
C-- Local Variables originally (Speedy) in common bloc (com_forcing.h):
C-- COMMON /FORFIX/ Time invariant forcing fields (initialise in INFORC)
C phi0 :: surface geopotential
_RL phi0 (NGP)
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
C == Local variables ==
C bi,bj :: Tile indices
C i,j,k,I2 :: Loop counters
C tYear :: Fraction into year
C aim_sWght0 :: weight for time interpolation of surface BC
C aim_sWght1 :: 0/1 = time period before/after the current time
C prcAtm :: total precip from the atmosphere [kg/m2/s]
INTEGER bi,bj
INTEGER i,j,k,I2
_RL tYear, yearLength
_RL aim_sWght0, aim_sWght1
_RL prcAtm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
#ifdef ALLOW_AIM_CO2
CALL AIM_DO_CO2( myTime, myIter, myThid )
#endif
C-- Start loops on tile indices
DO bj=myByLo(myThid),myByHi(myThid)
DO bi=myBxLo(myThid),myBxHi(myThid)
C_jmc: Because AIM physics LSC is not applied in the stratosphere (top level),
C ==> move water wapor from the stratos to the surface level.
DO j = 1-Oly, sNy+Oly
DO i = 1-Olx, sNx+Olx
k = ksurfC(i,j,bi,bj)
IF (k.LE.Nr)
& salt(i,j,k,bi,bj) = salt(i,j,k,bi,bj)
& + salt(i,j,Nr,bi,bj)*drF(Nr)*recip_drF(k)
& *hFacC(i,j,Nr,bi,bj)*recip_hFacC(i,j,k,bi,bj)
salt(i,j,Nr,bi,bj) = 0.
ENDDO
ENDDO
#ifdef ALLOW_THSICE
IF ( useThSIce ) THEN
C- do sea-ice advection before setting any surface BC.
CALL THSICE_DO_ADVECT(
I bi, bj, myTime, myIter, myThid )
ENDIF
#endif /* ALLOW_THSICE */
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
C- Physics package needs to know time of year as a fraction
yearLength = 86400.*360.
tYear = MOD(myTime/yearLength, 1. _d 0)
C-- Set surface Boundary Conditions for atmos. physics package:
C (Albedo, Soil moisture, Surf Temp, Land sea mask)
C includes some parts of S/R FORDATE from F.Molteni SPEDDY code (ver23)
CALL AIM_SURF_BC(
U tYear,
O aim_sWght0, aim_sWght1,
I bi, bj, myTime, myIter, myThid )
C-- Set surface geopotential: (g * orographic height)
DO j=1,sNy
DO i=1,sNx
I2 = i+(j-1)*sNx
PHI0(I2) = gravity*topoZ(i,j,bi,bj)
ENDDO
ENDDO
C-- Set topographic dependent FOROG var (originally in common SFLFIX);
C used to compute for wind stress over land
c_FM IF (IDAY.EQ.0) THEN
c_FM CALL SFLSET (PHIS0)
CALL SFLSET (PHI0, fOrogr(1,myThid), bi,bj,myThid)
c_FM ENDIF
c_FM CALL SOL_OZ (SOLC,TYEAR)
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
C- Compute atmospheric-physics tendencies (call the main AIM S/R)
CALL PHY_DRIVER( tYear, useDiagnostics,
I bi, bj, myTime, myIter, myThid )
CALL AIM_AIM2DYN( bi, bj, myTime, myIter, myThid )
#ifdef ALLOW_LAND
IF (useLand) THEN
C- prepare Surface flux over land for land package
CALL AIM_AIM2LAND( aim_landFr, bi, bj,
I myTime, myIter, myThid )
C- Step forward land model
CALL LAND_STEPFWD( aim_landFr, bi, bj,
I myTime, myIter, myThid )
C- Land diagnostics : write snap-shot & cumulate for TimeAve output
CALL LAND_DO_DIAGS( aim_landFr, bi, bj,
I myTime, myIter, myThid )
ENDIF
#endif /* ALLOW_LAND */
C- surface fluxes over ocean (ice-free & ice covered)
C used for diagnostics, thsice package and coupler
CALL AIM_AIM2SIOCE( aim_landFr, fmask1(1,3,myThid),
O prcAtm,
I bi, bj, myTime, myIter, myThid )
#ifdef ALLOW_THSICE
IF ( useThSIce ) THEN
C- Step forward sea-ice model
CALL THSICE_STEP_FWD( bi, bj, 1, sNx, 1, sNy,
I prcAtm,
I myTime, myIter, myThid )
C- Slab Ocean : step forward ocean mixed-layer temp. & salinity
CALL THSICE_SLAB_OCEAN(
I aim_sWght0, aim_sWght1,
O dTsurf(1,2,myThid),
I bi, bj, myTime, myIter, myThid )
CALL THSICE_AVE(
I bi, bj, myTime, myIter, myThid )
ENDIF
#endif /* ALLOW_THSICE */
#ifdef COMPONENT_MODULE
IF ( useCoupler ) THEN
CALL ATM_STORE_MY_DATA( bi, bj, myTime, myIter, myThid )
ENDIF
#endif /* COMPONENT_MODULE */
C- AIM diagnostics : write snap-shot & cumulate for TimeAve output
CALL AIM_DIAGNOSTICS( bi, bj, myTime, myIter, myThid )
C-- end bi,bj loops.
ENDDO
ENDDO
#endif /* ALLOW_AIM */
RETURN
END