| 1 |
C $Header: /u/gcmpack/MITgcm/model/src/update_etah.F,v 1.12 2011/05/20 16:29:49 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "PACKAGES_CONFIG.h" |
| 5 |
#include "CPP_OPTIONS.h" |
| 6 |
|
| 7 |
CBOP |
| 8 |
C !ROUTINE: UPDATE_ETAH |
| 9 |
C !INTERFACE: |
| 10 |
SUBROUTINE UPDATE_ETAH( myTime, myIter, myThid ) |
| 11 |
C !DESCRIPTION: \bv |
| 12 |
C *==========================================================* |
| 13 |
C | SUBROUTINE UPDATE_ETAH |
| 14 |
C | o Update etaH after mom-correction-step/integr_continuity |
| 15 |
C | (required with NLFS to derive surface layer thickness) |
| 16 |
C *==========================================================* |
| 17 |
C \ev |
| 18 |
|
| 19 |
C !USES: |
| 20 |
IMPLICIT NONE |
| 21 |
C == Global variables |
| 22 |
#include "SIZE.h" |
| 23 |
#include "EEPARAMS.h" |
| 24 |
#include "PARAMS.h" |
| 25 |
#include "DYNVARS.h" |
| 26 |
#include "GRID.h" |
| 27 |
#include "SURFACE.h" |
| 28 |
|
| 29 |
C !INPUT/OUTPUT PARAMETERS: |
| 30 |
C == Routine arguments == |
| 31 |
C myTime :: Current time in simulation |
| 32 |
C myIter :: Current iteration number |
| 33 |
C myThid :: my Thread Id number |
| 34 |
_RL myTime |
| 35 |
INTEGER myIter |
| 36 |
INTEGER myThid |
| 37 |
|
| 38 |
C !LOCAL VARIABLES: |
| 39 |
#ifdef EXACT_CONSERV |
| 40 |
C Local variables in common block |
| 41 |
|
| 42 |
C Local variables |
| 43 |
C i,j,bi,bj :: Loop counters |
| 44 |
INTEGER i,j,bi,bj |
| 45 |
CEOP |
| 46 |
|
| 47 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 48 |
|
| 49 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 50 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 51 |
|
| 52 |
C-- before updating etaH, save current etaH field in etaHnm1 |
| 53 |
DO j=1-Oly,sNy+Oly |
| 54 |
DO i=1-Olx,sNx+Olx |
| 55 |
etaHnm1(i,j,bi,bj) = etaH(i,j,bi,bj) |
| 56 |
ENDDO |
| 57 |
ENDDO |
| 58 |
|
| 59 |
C-- Update etaH at the end of the time step : |
| 60 |
C Incorporate the Explicit part of -Divergence(Barotropic_Flow) |
| 61 |
|
| 62 |
IF (implicDiv2Dflow.EQ. 1. _d 0) THEN |
| 63 |
DO j=1-Oly,sNy+Oly |
| 64 |
DO i=1-Olx,sNx+Olx |
| 65 |
etaH(i,j,bi,bj) = etaN(i,j,bi,bj) |
| 66 |
ENDDO |
| 67 |
ENDDO |
| 68 |
|
| 69 |
ELSE |
| 70 |
DO j=1,sNy |
| 71 |
DO i=1,sNx |
| 72 |
etaH(i,j,bi,bj) = etaN(i,j,bi,bj) |
| 73 |
& + (1. - implicDiv2Dflow)*dEtaHdt(i,j,bi,bj) |
| 74 |
& *deltaTfreesurf |
| 75 |
ENDDO |
| 76 |
ENDDO |
| 77 |
ENDIF |
| 78 |
|
| 79 |
#ifdef ALLOW_OBCS |
| 80 |
C-- Apply OBC to etaH (NonLin-FreeSurf): needed since viscous terms |
| 81 |
C depend on hFacZ which is not only function of boundary hFac values. |
| 82 |
IF ( useOBCS.AND.nonlinFreeSurf.GT.0 ) |
| 83 |
& CALL OBCS_APPLY_ETA( bi, bj, etaH, myThid ) |
| 84 |
#endif /* ALLOW_OBCS */ |
| 85 |
|
| 86 |
C- end bi,bj loop. |
| 87 |
ENDDO |
| 88 |
ENDDO |
| 89 |
|
| 90 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 91 |
|
| 92 |
IF ( implicDiv2Dflow .NE. 1. _d 0 .OR. |
| 93 |
& ( useOBCS.AND.nonlinFreeSurf.GT.0 ) ) |
| 94 |
& CALL EXCH_XY_RL( etaH, myThid ) |
| 95 |
|
| 96 |
#endif /* EXACT_CONSERV */ |
| 97 |
|
| 98 |
RETURN |
| 99 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph