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C $Header: /u/gcmpack/MITgcm/pkg/bulk_force/bulkf_fields_load.F,v 1.10 2005/04/06 18:36:22 jmc Exp $ |
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C $Name: $ |
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#include "CHEAPAML_OPTIONS.h" |
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|
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C !ROUTINE: CHEAPAML_FIELDS_LOAD |
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C !INTERFACE: |
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SUBROUTINE CHEAPAML_FIELDS_LOAD( myTime, myIter, myThid ) |
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C *==========================================================* |
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C | SUBROUTINE CHEAPAML_FIELDS_LOAD |
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C | o Control reading of fields from external source. |
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C *==========================================================* |
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|
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C !USES: |
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IMPLICIT NONE |
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C === Global variables === |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "FFIELDS.h" |
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c #include "GRID.h" |
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c #include "DYNVARS.h" |
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C #include "BULKF.h" |
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#ifdef ALLOW_THSICE |
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#include "THSICE_VARS.h" |
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#endif |
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#include "CHEAPAML.h" |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C === Routine arguments === |
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C myThid - Thread no. that called this routine. |
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C myTime - Simulation time |
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C myIter - Simulation timestep number |
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C dsolms - Solar variation at Southern boundary |
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C dsolmn - Solar variation at Northern boundary |
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c xphaseinit - user input initial phase of year relative |
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c to mid winter. E.G. xphaseinit = pi implies time zero |
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c is mid summer. |
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INTEGER myThid |
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_RL myTime |
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_RL local ,bump |
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c _RL dsolms,dsolmn |
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c _RL xphaseinit |
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INTEGER myIter |
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INTEGER jg |
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|
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C !LOCAL VARIABLES: |
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C === Local arrays === |
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C trair[01] :: Relaxation temp. profile for air temperature |
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C qrair[01] :: Relaxation specific humidity profile for air |
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C solar[01] :: short wave flux |
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C uwind[01] :: zonal wind |
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C vwind[01] :: meridional wind |
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|
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C aWght, bWght :: Interpolation weights |
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COMMON /BULKFFIELDS/ |
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& trair0, |
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& trair1, |
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& qrair0, |
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& qrair1 |
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|
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_RS trair0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS trair1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS qrair0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS qrair1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS Solar0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS Solar1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS uwind0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS uwind1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS vwind0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS vwind1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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|
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INTEGER bi,bj,i,j,intime0,intime1 |
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_RL aWght,bWght,rdt |
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_RL ssq0,ssq1,ssq2,lath,p0,ssqa,q |
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c xsolph - phase of year, assuming time zero is mid winter |
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c xinxx - cos ( xsolph ) |
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_RL xsolph,xinxx |
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INTEGER nForcingPeriods,Imytm,Ifprd,Ifcyc,Iftm |
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c coefficients used to compute saturation specific humidity |
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DATA ssq0, ssq1, ssq2 |
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& / 3.797915 _d 0 , 7.93252 _d -6 , 2.166847 _d -3 / |
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|
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c latent heat (J/kg) |
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lath=2.5d6 |
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c sea level pressure |
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p0=1000.d0 |
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|
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IF ( periodicExternalForcing ) THEN |
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|
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write(*,*) 'TEST 1 =========================' |
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|
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c the objective here is to give cheapaml a default periodic forcing |
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c consisting only of annually varying solar forcing, and thus Trelaxation |
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c variation. everything else, relative humidity, wind, are fixed. This |
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c keys off of solardata. if a solar data file exists, the model will |
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c assume there are files to be read and interpolated between, as is standard |
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c for the MITGCM. |
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|
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IF ( SolarFile .EQ. ' ' ) THEN |
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if ( myIter .EQ. nIter0 )then |
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WRITE(*,*) |
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& 'S/R Assuming Standard Annually Varying Solar Forcing' |
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endif |
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xsolph=myTime*2.d0*3.14159 _d 0/365. _d 0/86400. _d 0 |
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xinxx=cos(xsolph+xphaseinit+3.14159 _d 0) |
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DO bj=1,nSy |
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DO bi=1,nSx |
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DO j=1,sNy |
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DO i=1,sNx |
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jG = myYGlobalLo-1+(bj-1)*sNy+j |
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local=225.d0+dsolms*xinxx-float((jg-1))/float((ny-1))* |
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& (37.5d0-dsolmn*xinxx) |
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if ( jG .le. 3 ) local = local + 200 |
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Solar(i,j,bi,bj) = local |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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_EXCH_XY_RS(solar, mythid) |
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c relaxation temperature in radiative equilibrium |
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DO bj=1,nSy |
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DO bi=1,nSx |
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DO j=1,sNy |
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DO i=1,sNx |
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jG = myYGlobalLo-1+(bj-1)*sNy+j |
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local=solar(i,j,bi,bj) |
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local=(2.d0*local/stefan)**(0.25d0)-273.16 |
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bump=-5.d0*EXP(-(float(jg-127)*float(jg-127))/1920.0) |
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local=local+bump |
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TR(i,j,bi,bj) = local |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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_EXCH_XY_RS(TR, mythid) |
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c default specific humidity profile to 80% relative humidity |
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DO bj=1,nSy |
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DO bi=1,nSx |
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DO j=1,sNy |
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DO i=1,sNx |
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c jG = myYGlobalLo-1+(bj-1)*sNy+j |
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local = Tr(i,j,bi,bj)+273.16d0 |
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ssqa = ssq0*exp( lath*(ssq1-ssq2/local)) / p0 |
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qr(i,j,bi,bj) = 0.8d0*ssqa |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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_EXCH_XY_RS(qr, mythid) |
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c u wind field |
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DO bj=1,nSy |
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DO bi=1,nSx |
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DO j=1,sNy |
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DO i=1,sNx |
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jG = myYGlobalLo-1+(bj-1)*sNy+j |
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local=-5.d0*cos(2.d0*pi*float(jg-1)/(float(ny-1))) |
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uwind(i,j,bi,bj) = local |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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_EXCH_XY_RS(uwind, mythid) |
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c v wind field |
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DO bj=1,nSy |
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DO bi=1,nSx |
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DO j=1,sNy |
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DO i=1,sNx |
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jG = myYGlobalLo-1+(bj-1)*sNy+j |
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vwind(i,j,bi,bj) = 0.d0 |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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_EXCH_XY_RS(vwind, mythid) |
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else |
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|
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c here for usual interpolative forcings |
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C First call requires that we initialize everything to zero for safety |
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IF ( myIter .EQ. nIter0 ) THEN |
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CALL LEF_ZERO( trair0 ,myThid ) |
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CALL LEF_ZERO( trair1 ,myThid ) |
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CALL LEF_ZERO( qrair0 ,myThid ) |
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CALL LEF_ZERO( qrair1 ,myThid ) |
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CALL LEF_ZERO( solar0 ,myThid ) |
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CALL LEF_ZERO( solar1 ,myThid ) |
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CALL LEF_ZERO( uwind0 ,myThid ) |
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CALL LEF_ZERO( uwind1 ,myThid ) |
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CALL LEF_ZERO( vwind0 ,myThid ) |
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CALL LEF_ZERO( vwind1 ,myThid ) |
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ENDIF |
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|
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C Now calculate whether it is time to update the forcing arrays |
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rdt=1. _d 0 / deltaTclock |
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nForcingPeriods= |
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& int(externForcingCycle/externForcingPeriod+0.5) |
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Imytm=int(myTime*rdt+0.5) |
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Ifprd=int(externForcingPeriod*rdt+0.5) |
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Ifcyc=int(externForcingCycle*rdt+0.5) |
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Iftm=mod( Imytm+Ifcyc-Ifprd/2 ,Ifcyc) |
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|
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intime0=int(Iftm/Ifprd) |
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intime1=mod(intime0+1,nForcingPeriods) |
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c aWght=float( Iftm-Ifprd*intime0 )/float( Ifprd ) |
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aWght=dfloat( Iftm-Ifprd*intime0 )/dfloat( Ifprd ) |
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bWght=1.-aWght |
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|
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intime0=intime0+1 |
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intime1=intime1+1 |
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|
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IF ( |
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& Iftm-Ifprd*(intime0-1) .EQ. 0 |
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& .OR. myIter .EQ. nIter0 |
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& ) THEN |
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|
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_BEGIN_MASTER(myThid) |
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|
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C If the above condition is met then we need to read in |
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C data for the period ahead and the period behind myTime. |
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WRITE(*,*) |
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& 'S/R CHEAPAML_FIELDS_LOAD' |
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IF ( SolarFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( SolarFile,solar0,intime0, |
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& myIter,myThid ) |
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CALL READ_REC_XY_RS( SolarFile,solar1,intime1, |
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& myIter,myThid ) |
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ENDIF |
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IF ( TrFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( TRFile,trair0,intime0, |
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& myIter,myThid ) |
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CALL READ_REC_XY_RS( TRFile,trair1,intime1, |
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& myIter,myThid ) |
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ENDIF |
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IF ( QrFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( QrFile,qrair0,intime0, |
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& myIter,myThid ) |
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CALL READ_REC_XY_RS( QrFile,qrair1,intime1, |
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& myIter,myThid ) |
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ENDIF |
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IF ( UWindFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( UWindFile,uwind0,intime0, |
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& myIter,myThid ) |
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CALL READ_REC_XY_RS( UWindFile,uwind1,intime1, |
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& myIter,myThid ) |
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ENDIF |
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IF ( VWindFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( VWindFile,vwind0,intime0, |
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& myIter,myThid ) |
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CALL READ_REC_XY_RS( VWindFile,vwind1,intime1, |
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& myIter,myThid ) |
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ENDIF |
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|
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_END_MASTER(myThid) |
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C |
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_EXCH_XY_R4(trair0 , myThid ) |
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_EXCH_XY_R4(qrair0 , myThid ) |
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_EXCH_XY_R4(solar0 , myThid ) |
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_EXCH_XY_R4(uwind0 , myThid ) |
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_EXCH_XY_R4(vwind0 , myThid ) |
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_EXCH_XY_R4(trair1 , myThid ) |
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_EXCH_XY_R4(qrair1 , myThid ) |
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_EXCH_XY_R4(solar1 , myThid ) |
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_EXCH_XY_R4(uwind1 , myThid ) |
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_EXCH_XY_R4(vwind1 , myThid ) |
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C |
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ENDIF |
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|
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C-- Interpolate TR, QR, SOLAR |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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TR(i,j,bi,bj) = bWght*trair0(i,j,bi,bj) |
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& +aWght*trair1(i,j,bi,bj) !+273.15 |
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qr(i,j,bi,bj) = bWght*qrair0(i,j,bi,bj) |
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& +aWght*qrair1(i,j,bi,bj) |
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uwind(i,j,bi,bj) = bWght*uwind0(i,j,bi,bj) |
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& +aWght*uwind1(i,j,bi,bj) |
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vwind(i,j,bi,bj) = bWght*vwind0(i,j,bi,bj) |
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& +aWght*vwind1(i,j,bi,bj) |
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solar(i,j,bi,bj) = bWght*solar0(i,j,bi,bj) |
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& +aWght*solar1(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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endif |
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c end of periodic forcing options, on to steady option |
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|
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ELSE |
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IF ( myIter .EQ. nIter0 ) THEN |
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IF ( SolarFile .NE. ' ' ) THEN |
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CALL READ_FLD_XY_RS( SolarFile,solar,' ',0,myThid ) |
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ELSE |
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DO bj=1,nSy |
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DO bi=1,nSx |
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DO j=1,sNy |
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DO i=1,sNx |
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jG = myYGlobalLo-1+(bj-1)*sNy+j |
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local=225.d0-float((jg-1))/float((ny-1))*37.5d0 |
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IF ( jG .le. 3 ) local =local + 200 |
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Solar(i,j,bi,bj) = local |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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_EXCH_XY_RS(solar, mythid) |
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ENDIF |
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IF ( TrFile .NE. ' ' ) THEN |
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CALL READ_FLD_XY_RS( TrFile,tr,' ',0,myThid ) |
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ELSE |
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DO bj=1,nSy |
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DO bi=1,nSx |
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DO j=1,sNy |
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DO i=1,sNx |
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jG = myYGlobalLo-1+(bj-1)*sNy+j |
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local=solar(i,j,bi,bj) |
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local=(2.d0*local/stefan)**(0.25d0)-273.16 |
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bump=-5.d0*EXP(-(float(jg-127)*float(jg-127))/1920.0) |
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local=local+bump |
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TR(i,j,bi,bj) = local |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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_EXCH_XY_RS(TR, mythid) |
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ENDIF |
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c do specific humidity |
| 328 |
IF ( QrFile .NE. ' ' ) THEN |
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CALL READ_FLD_XY_RS( QrFile,qr,' ',0,myThid ) |
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ELSE |
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c default specific humidity profile to 80% relative humidity |
| 332 |
DO bj=1,nSy |
| 333 |
DO bi=1,nSx |
| 334 |
DO j=1,sNy |
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DO i=1,sNx |
| 336 |
c jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 337 |
local = Tr(i,j,bi,bj)+273.16d0 |
| 338 |
ssqa = ssq0*exp( lath*(ssq1-ssq2/local)) / p0 |
| 339 |
qr(i,j,bi,bj) = 0.8d0*ssqa |
| 340 |
ENDDO |
| 341 |
ENDDO |
| 342 |
ENDDO |
| 343 |
ENDDO |
| 344 |
_EXCH_XY_RS(qr, mythid) |
| 345 |
ENDIF |
| 346 |
IF ( UWindFile .NE. ' ' ) THEN |
| 347 |
CALL READ_FLD_XY_RS( UWindFile,uwind,' ',0,myThid ) |
| 348 |
ELSE |
| 349 |
DO bj=1,nSy |
| 350 |
DO bi=1,nSx |
| 351 |
DO j=1,sNy |
| 352 |
DO i=1,sNx |
| 353 |
jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 354 |
c mod for debug |
| 355 |
c to return to original code, uncomment following line |
| 356 |
c comment out 2nd line |
| 357 |
local=-5.d0*cos(2.d0*pi*float(jg-1)/(float(ny-1))) |
| 358 |
c local=0.d0*cos(2.d0*pi*float(jg-1)/(float(ny-1))) |
| 359 |
uwind(i,j,bi,bj) = local |
| 360 |
ENDDO |
| 361 |
ENDDO |
| 362 |
ENDDO |
| 363 |
ENDDO |
| 364 |
_EXCH_XY_RS(uwind, mythid) |
| 365 |
ENDIF |
| 366 |
IF ( VWindFile .NE. ' ' ) THEN |
| 367 |
CALL READ_FLD_XY_RS( VWindFile,vwind,' ',0,myThid ) |
| 368 |
ELSE |
| 369 |
DO bj=1,nSy |
| 370 |
DO bi=1,nSx |
| 371 |
DO j=1,sNy |
| 372 |
DO i=1,sNx |
| 373 |
jG = myYGlobalLo-1+(bj-1)*sNy+j |
| 374 |
vwind(i,j,bi,bj) = 0.d0 |
| 375 |
ENDDO |
| 376 |
ENDDO |
| 377 |
ENDDO |
| 378 |
ENDDO |
| 379 |
_EXCH_XY_RS(vwind, mythid) |
| 380 |
ENDIF |
| 381 |
ENDIF |
| 382 |
C endif for periodicForcing |
| 383 |
ENDIF |
| 384 |
|
| 385 |
RETURN |
| 386 |
END |
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