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C $Header: /u/gcmpack/MITgcm/pkg/atm2d/relax_add.F,v 1.4 2010/06/16 21:04:22 jscott Exp $ |
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C $Name: $ |
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|
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#include "ctrparam.h" |
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#include "ATM2D_OPTIONS.h" |
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|
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C !INTERFACE: |
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SUBROUTINE RELAX_ADD( wght0, wght1, |
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& intime0, intime1, iftime, myIter, myThid) |
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C *==========================================================* |
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C | Adds restoring terms to surface forcing. Note that: | |
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C | - restoring is phased out as restor (or act.) SST <2C | |
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C | - if nsTypeRelax NE 0, salt rest. phased out nr poles | |
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C | - if ntTypeRelax NE 0, temp rest. phased out nr poles | |
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C *==========================================================* |
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IMPLICIT NONE |
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|
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#include "ATMSIZE.h" |
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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 "GRID.h" |
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#include "THSICE_VARS.h" |
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#include "ATM2D_VARS.h" |
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|
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c include ocean and seaice vars |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C === Routine arguments === |
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C wght0, wght1 - weight of first and second month, respectively |
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C intime0,intime1- month id # for first and second months |
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C iftime - true -> prompts a reloading of data from disk |
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C myIter - Ocean iteration number |
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C myThid - Thread no. that called this routine. |
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_RL wght0 |
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_RL wght1 |
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INTEGER intime0 |
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INTEGER intime1 |
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LOGICAL iftime |
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INTEGER myIter |
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INTEGER myThid |
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|
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C LOCAL VARIABLES: |
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C Save below so that continual file reloads aren't necessary |
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COMMON /OCEANRELAX/ |
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& sst0, sst1, sss0, sss1 |
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|
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_RS sst0(1-Olx:sNx+Olx,1-Oly:sNy+Oly,1,1) |
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_RS sst1(1-Olx:sNx+Olx,1-Oly:sNy+Oly,1,1) |
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_RS sss0(1-Olx:sNx+Olx,1-Oly:sNy+Oly,1,1) |
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_RS sss1(1-Olx:sNx+Olx,1-Oly:sNy+Oly,1,1) |
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_RL lambdaTheta,lambdaSalt |
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_RS nearIce ! constant used to phase out rest near frz point |
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_RL qrelflux, frelflux |
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_RL sstRelax(1:sNx,1:sNy) ! relaxation sst as computed from file |
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_RL sssRelax(1:sNx,1:sNy) ! relaxation sss as computed from file |
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INTEGER i,j |
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|
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IF (ifTime) THEN |
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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 current time. |
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|
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WRITE(*,*) 'S/R RELAX_ADD: Reading new data' |
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IF ( thetaRelaxFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( thetaRelaxFile,sst0,intime0, |
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& myIter,myThid ) |
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CALL READ_REC_XY_RS( thetaRelaxFile,sst1,intime1, |
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& myIter,myThid ) |
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ENDIF |
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IF ( saltRelaxFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( saltRelaxFile,sss0,intime0, |
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& myIter,myThid ) |
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CALL READ_REC_XY_RS( saltRelaxFile,sss1,intime1, |
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& myIter,myThid ) |
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ENDIF |
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|
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ENDIF |
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|
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IF ((thetaRelaxFile.NE.' ').OR.(saltRelaxFile.NE.' ')) THEN |
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|
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C-- Interpolate and add to anomaly |
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DO j=1,sNy |
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|
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IF (ntTypeRelax .EQ. 0) THEN |
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lambdaTheta = r_tauThetaRelax |
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ELSE |
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lambdaTheta = r_tauThetaRelax * |
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& max(cos(1.5 _d 0*yC(1,j,1,1)*deg2rad),0. _d 0) |
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ENDIF |
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IF (nsTypeRelax .EQ. 0) THEN |
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lambdaSalt = r_tauSaltRelax |
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ELSE |
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lambdaSalt = r_tauSaltRelax * |
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& max(cos(1.5 _d 0*yC(1,j,1,1)*deg2rad),0. _d 0) |
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ENDIF |
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|
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DO i=1,sNx |
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|
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IF (maskC(i,j,1,1,1) .EQ. 1.) THEN |
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|
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IF (thetaRelaxFile.NE.' ') THEN |
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sstRelax(i,j)= (wght0*sst0(i,j,1,1) + wght1*sst1(i,j,1,1)) |
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ELSE !no T restoring; use actual SST to determine if nr freezing |
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sstRelax(i,j)= sstFromOcn(i,j) |
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ENDIF |
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|
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IF (saltRelaxFile.NE.' ') THEN |
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sssRelax(i,j)= (wght0*sss0(i,j,1,1) + wght1*sss1(i,j,1,1)) |
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ELSE ! no S restoring; this ensures frelflux=0 |
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sssRelax(i,j)= sssFromOcn(i,j) |
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ENDIF |
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|
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|
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C Next lines: linearly phase out SST restoring between 2C and -1C |
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C ONLY if seaice is present |
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IF ((sstRelax(i,j).GT.2. _d 0).OR. |
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& (iceMask(i,j,1,1) .EQ. 0. _d 0)) THEN |
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nearIce=1.0 |
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ELSEIF (sstRelax(i,j) .LE. -1. _d 0) THEN |
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nearIce=0.0 |
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ELSE |
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nearIce=(sstRelax(i,j)+1.0)/3.0 |
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endif |
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|
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qrelflux= lambdaTheta*(sstFromOcn(i,j)-sstRelax(i,j)) |
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& * (HeatCapacity_Cp*rhoNil*drF(1))*nearIce |
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C- should use rhoConst instead of rhoNil: |
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c & * (HeatCapacity_Cp*rhoConst*drF(1))*nearIce |
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|
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C no longer restore on top of ice, but effectively full gridpoint UNDER ice |
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C (unless gridpoint is fully ice covered) |
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IF (iceMask(i,j,1,1) .LT. 0.999 _d 0) THEN |
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qneto_2D(i,j)= qneto_2D(i,j) + qrelflux |
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& / (1. _d 0 - iceMask(i,j,1,1)) |
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ENDIF |
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C qneto_2D(i,j)= qneto_2D(i,j) + qrelflux |
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C qneti_2D(i,j)= qneti_2D(i,j) + qrelflux |
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|
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frelflux= -lambdaSalt*(sssFromOcn(i,j)-sssRelax(i,j))/ |
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& (convertFW2Salt *recip_drF(1))*nearIce |
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|
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C or use actual salt instead of convertFW2salt above? |
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|
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IF (frelflux .GT. 0. _d 0) THEN |
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evapo_2D(i,j)= evapo_2D(i,j) - frelflux |
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C note most of the time, evapi=0 when iceMask>0 anyway |
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C (i.e., only when relaxing SST >2 but ocn still ice-covered) |
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IF (iceMask(i,j,1,1).GT.0. _d 0) |
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& evapi_2D(i,j)= evapi_2D(i,j) - frelflux |
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ELSE |
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precipo_2D(i,j)= precipo_2D(i,j) + frelflux |
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IF (iceMask(i,j,1,1).GT.0. _d 0) |
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& precipi_2D(i,j)= precipi_2D(i,j) + frelflux |
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ENDIF |
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|
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C IF (iceMask(i,j,1,1) .GT. 0. _d 0) THEN |
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C PRINT *,'Frelflux',frelflux,precipi_2D(i,j),atm_precip(j+1) |
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C ENDIF |
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|
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C Diagnostics |
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sum_qrel(i,j)= sum_qrel(i,j) + qrelflux*dtatmo |
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sum_frel(i,j)= sum_frel(i,j) + frelflux*dtatmo |
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|
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ENDIF |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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C PRINT *,'***bottom of relaxadd',wght0,wght1,intime0,intime1 |
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C PRINT *,'evapo_2d: ',evapo_2D(JBUGI,JBUGJ) |
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C PRINT *,'precipo_2d: ',precipo_2D(JBUGI,JBUGJ) |
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C PRINT *,'qneto_2d: ',qneto_2D(JBUGI,JBUGJ) |
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C PRINT *,'SStfrom Ocn: ',sstfromocn(JBUGI,JBUGJ) |
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C PRINT *,'SSSfrom Ocn: ',sssfromocn(JBUGI,JBUGJ) |
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|
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RETURN |
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END |
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