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ztmp(:) = glob_sum_vec( 'icedyn_rhg_evp', zres )
IF( ztmp(2) /= 0._wp ) zresm = ztmp(1) / ztmp(2)
ENDIF
ENDIF
IF( lwm ) THEN
! write variables
istatus = NF90_PUT_VAR( ncvgid, nvarid, (/zresm/), (/it/), (/1/) )
! close file
IF( kt == nitend - nn_fsbc + 1 .AND. kiter == kitermax ) istatus = NF90_CLOSE(ncvgid)
ENDIF
END SUBROUTINE rhg_cvg
SUBROUTINE rhg_evp_rst( cdrw, kt )
!!---------------------------------------------------------------------
!! *** ROUTINE rhg_evp_rst ***
!!
!! ** Purpose : Read or write RHG file in restart file
!!
!! ** Method : use of IOM library
!!----------------------------------------------------------------------
CHARACTER(len=*) , INTENT(in) :: cdrw ! "READ"/"WRITE" flag
INTEGER, OPTIONAL, INTENT(in) :: kt ! ice time-step
!
INTEGER :: iter ! local integer
INTEGER :: id1, id2, id3 ! local integers
!!----------------------------------------------------------------------
!
IF( TRIM(cdrw) == 'READ' ) THEN ! Read/initialize
! ! ---------------
IF( ln_rstart ) THEN !* Read the restart file
!
id1 = iom_varid( numrir, 'stress1_i' , ldstop = .FALSE. )
id2 = iom_varid( numrir, 'stress2_i' , ldstop = .FALSE. )
id3 = iom_varid( numrir, 'stress12_i', ldstop = .FALSE. )
!
IF( MIN( id1, id2, id3 ) > 0 ) THEN ! fields exist
CALL iom_get( numrir, jpdom_auto, 'stress1_i' , stress1_i , cd_type = 'T' )
CALL iom_get( numrir, jpdom_auto, 'stress2_i' , stress2_i , cd_type = 'T' )
CALL iom_get( numrir, jpdom_auto, 'stress12_i', stress12_i, cd_type = 'F' )
ELSE ! start rheology from rest
IF(lwp) WRITE(numout,*)
IF(lwp) WRITE(numout,*) ' ==>>> previous run without rheology, set stresses to 0'
stress1_i (:,:) = 0._wp
stress2_i (:,:) = 0._wp
stress12_i(:,:) = 0._wp
ENDIF
ELSE !* Start from rest
IF(lwp) WRITE(numout,*)
IF(lwp) WRITE(numout,*) ' ==>>> start from rest: set stresses to 0'
stress1_i (:,:) = 0._wp
stress2_i (:,:) = 0._wp
stress12_i(:,:) = 0._wp
ENDIF
!
ELSEIF( TRIM(cdrw) == 'WRITE' ) THEN ! Create restart file
! ! -------------------
IF(lwp) WRITE(numout,*) '---- rhg-rst ----'
iter = kt + nn_fsbc - 1 ! ice restarts are written at kt == nitrst - nn_fsbc + 1
!
CALL iom_rstput( iter, nitrst, numriw, 'stress1_i' , stress1_i )
CALL iom_rstput( iter, nitrst, numriw, 'stress2_i' , stress2_i )
CALL iom_rstput( iter, nitrst, numriw, 'stress12_i', stress12_i )
!
ENDIF
!
END SUBROUTINE rhg_evp_rst
SUBROUTINE rhg_upstream( jter, pdt, pu, pv, pt )
!!---------------------------------------------------------------------
!! *** ROUTINE rhg_upstream ***
!!
!! ** Purpose : compute the upstream fluxes and upstream guess of tracer
!!----------------------------------------------------------------------
INTEGER , INTENT(in ) :: jter
REAL(wp) , INTENT(in ) :: pdt ! tracer time-step
REAL(wp), DIMENSION(:,: ) , INTENT(in ) :: pu, pv ! 2 ice velocity components
REAL(wp), DIMENSION(:,:,:) , INTENT(inout) :: pt ! tracer fields
!
INTEGER :: ji, jj, jl ! dummy loop indices
REAL(wp) :: ztra ! local scalar
LOGICAL :: ll_upsxy = .TRUE.
REAL(wp), DIMENSION(jpi,jpj) :: zfu_ups, zfv_ups, zpt ! upstream fluxes and tracer guess
!!----------------------------------------------------------------------
DO jl = 1, jpl
IF( .NOT. ll_upsxy ) THEN !** no alternate directions **!
!
DO_2D( nn_hls, nn_hls-1, nn_hls, nn_hls-1 )
zfu_ups(ji,jj) = MAX(pu(ji,jj)*e2u(ji,jj), 0._wp) * pt(ji,jj,jl) + MIN(pu(ji,jj)*e2u(ji,jj), 0._wp) * pt(ji+1,jj,jl)
zfv_ups(ji,jj) = MAX(pv(ji,jj)*e1v(ji,jj), 0._wp) * pt(ji,jj,jl) + MIN(pv(ji,jj)*e1v(ji,jj), 0._wp) * pt(ji,jj+1,jl)
END_2D
!
ELSE !** alternate directions **!
!
IF( MOD(jter,2) == 1 ) THEN !== odd ice time step: adv_x then adv_y ==!
!
DO_2D( nn_hls, nn_hls-1, nn_hls, nn_hls ) !-- flux in x-direction
zfu_ups(ji,jj) = MAX( pu(ji,jj)*e2u(ji,jj), 0._wp ) * pt(ji ,jj,jl) + &
& MIN( pu(ji,jj)*e2u(ji,jj), 0._wp ) * pt(ji+1,jj,jl)
END_2D
!
DO_2D( nn_hls-1, nn_hls-1, nn_hls, nn_hls ) !-- first guess of tracer from u-flux
ztra = - ( zfu_ups(ji,jj) - zfu_ups(ji-1,jj) )
zpt(ji,jj) = ( pt(ji,jj,jl) + ztra * pdt * r1_e1e2t(ji,jj) ) * tmask(ji,jj,1)
END_2D
!
DO_2D( nn_hls-1, nn_hls-1, nn_hls, nn_hls-1 ) !-- flux in y-direction
zfv_ups(ji,jj) = MAX( pv(ji,jj)*e1v(ji,jj), 0._wp ) * zpt(ji,jj ) + &
& MIN( pv(ji,jj)*e1v(ji,jj), 0._wp ) * zpt(ji,jj+1)
END_2D
!
ELSE !== even ice time step: adv_y then adv_x ==!
!
DO_2D( nn_hls, nn_hls, nn_hls, nn_hls-1 ) !-- flux in y-direction
zfv_ups(ji,jj) = MAX( pv(ji,jj)*e1v(ji,jj), 0._wp ) * pt(ji,jj ,jl) + &
& MIN( pv(ji,jj)*e1v(ji,jj), 0._wp ) * pt(ji,jj+1,jl)
END_2D
!
DO_2D( nn_hls, nn_hls, nn_hls-1, nn_hls-1 ) !-- first guess of tracer from v-flux
ztra = - ( zfv_ups(ji,jj) - zfv_ups(ji,jj-1) )
zpt(ji,jj) = ( pt(ji,jj,jl) + ztra * pdt * r1_e1e2t(ji,jj) ) * tmask(ji,jj,1)
END_2D
!
DO_2D( nn_hls, nn_hls-1, nn_hls-1, nn_hls-1 ) !-- flux in x-direction
zfu_ups(ji,jj) = MAX( pu(ji,jj)*e2u(ji,jj), 0._wp ) * zpt(ji ,jj) + &
& MIN( pu(ji,jj)*e2u(ji,jj), 0._wp ) * zpt(ji+1,jj)
END_2D
!
ENDIF
!
ENDIF
!
DO_2D( nn_hls-1, nn_hls-1, nn_hls-1, nn_hls-1 )
ztra = - ( zfu_ups(ji,jj) - zfu_ups(ji-1,jj) + zfv_ups(ji,jj) - zfv_ups(ji,jj-1) )
pt(ji,jj,jl) = ( pt(ji,jj,jl) + ztra * pdt * r1_e1e2t(ji,jj) ) * tmask(ji,jj,1)
END_2D
END DO
!
END SUBROUTINE rhg_upstream
#else
!!----------------------------------------------------------------------
!! Default option Empty module NO SI3 sea-ice model
!!----------------------------------------------------------------------
#endif
!!==============================================================================
END MODULE icedyn_rhg_evp