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MODULE trdtra
!!======================================================================
!! *** MODULE trdtra ***
!! Ocean diagnostics: ocean tracers trends pre-processing
!!=====================================================================
!! History : 3.3 ! 2010-06 (C. Ethe) creation for the TRA/TRC merge
!! 3.5 ! 2012-02 (G. Madec) update the comments
!!----------------------------------------------------------------------
!!----------------------------------------------------------------------
!! trd_tra : pre-process the tracer trends
!! trd_tra_adv : transform a div(U.T) trend into a U.grad(T) trend
!! trd_tra_mng : tracer trend manager: dispatch to the diagnostic modules
!! trd_tra_iom : output 3D tracer trends using IOM
!!----------------------------------------------------------------------
USE oce ! ocean dynamics and tracers variables
USE dom_oce ! ocean domain
USE sbc_oce ! surface boundary condition: ocean
USE zdf_oce ! ocean vertical physics
USE trd_oce ! trends: ocean variables
USE trdtrc ! ocean passive mixed layer tracers trends
USE trdglo ! trends: global domain averaged
USE trdpen ! trends: Potential ENergy
USE trdmxl ! ocean active mixed layer tracers trends
USE ldftra ! ocean active tracers lateral physics
USE ldfslp
USE zdfddm ! vertical physics: double diffusion
USE phycst ! physical constants
!
USE in_out_manager ! I/O manager
USE iom ! I/O manager library
USE lib_mpp ! MPP library
IMPLICIT NONE
PRIVATE
PUBLIC trd_tra ! called by all tra_... modules
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REAL(dp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: trdtx, trdty, trdt ! use to store the temperature trends
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REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: avt_evd ! store avt_evd to calculate EVD trend
!! * Substitutions
# include "do_loop_substitute.h90"
# include "domzgr_substitute.h90"
!!----------------------------------------------------------------------
!! NEMO/OCE 4.0 , NEMO Consortium (2018)
!! $Id: trdtra.F90 14174 2020-12-15 18:25:18Z hadcv $
!! Software governed by the CeCILL license (see ./LICENSE)
!!----------------------------------------------------------------------
CONTAINS
INTEGER FUNCTION trd_tra_alloc()
!!---------------------------------------------------------------------
!! *** FUNCTION trd_tra_alloc ***
!!---------------------------------------------------------------------
ALLOCATE( trdtx(jpi,jpj,jpk) , trdty(jpi,jpj,jpk) , trdt(jpi,jpj,jpk) , avt_evd(jpi,jpj,jpk), STAT= trd_tra_alloc )
!
CALL mpp_sum ( 'trdtra', trd_tra_alloc )
IF( trd_tra_alloc /= 0 ) CALL ctl_stop( 'STOP', 'trd_tra_alloc: failed to allocate arrays' )
END FUNCTION trd_tra_alloc
SUBROUTINE trd_tra( kt, Kmm, Krhs, ctype, ktra, ktrd, ptrd, pu, ptra )
!!---------------------------------------------------------------------
!! *** ROUTINE trd_tra ***
!!
!! ** Purpose : pre-process tracer trends
!!
!! ** Method : - mask the trend
!! - advection (ptra present) converte the incoming flux (U.T)
!! into trend (U.T => -U.grat(T)=div(U.T)-T.div(U)) through a
!! call to trd_tra_adv
!! - 'TRA' case : regroup T & S trends
!! - send the trends to trd_tra_mng (trdtrc) for further processing
!!----------------------------------------------------------------------
INTEGER , INTENT(in) :: kt ! time step
CHARACTER(len=3) , INTENT(in) :: ctype ! tracers trends type 'TRA'/'TRC'
INTEGER , INTENT(in) :: ktra ! tracer index
INTEGER , INTENT(in) :: ktrd ! tracer trend index
INTEGER , INTENT(in) :: Kmm, Krhs ! time level indices
REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in) :: ptrd ! tracer trend or flux
REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in), OPTIONAL :: pu ! now velocity
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REAL(dp), DIMENSION(jpi,jpj,jpk), INTENT(in), OPTIONAL :: ptra ! now tracer variable
!
INTEGER :: jk ! loop indices
INTEGER :: i01 ! 0 or 1
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REAL(dp), DIMENSION(jpi,jpj,jpk) :: ztrds ! 3D workspace
REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: zwt, zws! 3D workspace
REAL(dp), ALLOCATABLE, DIMENSION(:,:,:) :: ztrdt! 3D workspace
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!!----------------------------------------------------------------------
!
IF( .NOT. ALLOCATED( trdtx ) ) THEN ! allocate trdtra arrays
IF( trd_tra_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'trd_tra : unable to allocate arrays' )
avt_evd(:,:,:) = 0._wp
ENDIF
!
i01 = COUNT( (/ PRESENT(pu) .OR. ( ktrd /= jptra_xad .AND. ktrd /= jptra_yad .AND. ktrd /= jptra_zad ) /) )
!
IF( ctype == 'TRA' .AND. ktra == jp_tem ) THEN !== Temperature trend ==!
!
SELECT CASE( ktrd*i01 )
! ! advection: transform the advective flux into a trend
CASE( jptra_xad ) ; CALL trd_tra_adv( ptrd, pu, ptra, 'X', trdtx, Kmm )
CASE( jptra_yad ) ; CALL trd_tra_adv( ptrd, pu, ptra, 'Y', trdty, Kmm )
CASE( jptra_zad ) ; CALL trd_tra_adv( ptrd, pu, ptra, 'Z', trdt, Kmm )
CASE( jptra_bbc, & ! qsr, bbc: on temperature only, send to trd_tra_mng
& jptra_qsr ) ; trdt(:,:,:) = ptrd(:,:,:) * tmask(:,:,:)
ztrds(:,:,:) = 0._wp
CALL trd_tra_mng( trdt, ztrds, ktrd, kt, Kmm )
!!gm Gurvan, verify the jptra_evd trend please !
CASE( jptra_evd ) ; avt_evd(:,:,:) = ptrd(:,:,:) * tmask(:,:,:)
CASE DEFAULT ! other trends: masked trends
trdt(:,:,:) = ptrd(:,:,:) * tmask(:,:,:) ! mask & store
END SELECT
!
ENDIF
IF( ctype == 'TRA' .AND. ktra == jp_sal ) THEN !== Salinity trends ==!
!
SELECT CASE( ktrd*i01 )
! ! advection: transform the advective flux into a trend
! ! and send T & S trends to trd_tra_mng
CASE( jptra_xad ) ; CALL trd_tra_adv( ptrd , pu , ptra, 'X' , ztrds, Kmm )
CALL trd_tra_mng( trdtx, ztrds, ktrd, kt, Kmm )
CASE( jptra_yad ) ; CALL trd_tra_adv( ptrd , pu , ptra, 'Y' , ztrds, Kmm )
CALL trd_tra_mng( trdty, ztrds, ktrd, kt, Kmm )
CASE( jptra_zad ) ; CALL trd_tra_adv( ptrd , pu , ptra, 'Z' , ztrds, Kmm )
CALL trd_tra_mng( trdt , ztrds, ktrd, kt, Kmm )
CASE( jptra_zdfp ) ! diagnose the "PURE" Kz trend (here: just before the swap)
! ! iso-neutral diffusion case otherwise jptra_zdf is "PURE"
ALLOCATE( zwt(jpi,jpj,jpk), zws(jpi,jpj,jpk), ztrdt(jpi,jpj,jpk) )
!
zwt(:,:, 1 ) = 0._wp ; zws(:,:, 1 ) = 0._wp ! vertical diffusive fluxes
zwt(:,:,jpk) = 0._wp ; zws(:,:,jpk) = 0._wp
DO jk = 2, jpk
zwt(:,:,jk) = avt(:,:,jk) * ( ts(:,:,jk-1,jp_tem,Krhs) - ts(:,:,jk,jp_tem,Krhs) ) &
& / e3w(:,:,jk,Kmm) * tmask(:,:,jk)
zws(:,:,jk) = avs(:,:,jk) * ( ts(:,:,jk-1,jp_sal,Krhs) - ts(:,:,jk,jp_sal,Krhs) ) &
& / e3w(:,:,jk,Kmm) * tmask(:,:,jk)
END DO
!
ztrdt(:,:,jpk) = 0._wp ; ztrds(:,:,jpk) = 0._wp
DO jk = 1, jpkm1
ztrdt(:,:,jk) = ( zwt(:,:,jk) - zwt(:,:,jk+1) ) / e3t(:,:,jk,Kmm)
ztrds(:,:,jk) = ( zws(:,:,jk) - zws(:,:,jk+1) ) / e3t(:,:,jk,Kmm)
END DO
CALL trd_tra_mng( ztrdt, ztrds, jptra_zdfp, kt, Kmm )
!
! ! Also calculate EVD trend at this point.
zwt(:,:,:) = 0._wp ; zws(:,:,:) = 0._wp ! vertical diffusive fluxes
DO jk = 2, jpk
zwt(:,:,jk) = avt_evd(:,:,jk) * ( ts(:,:,jk-1,jp_tem,Krhs) - ts(:,:,jk,jp_tem,Krhs) ) &
& / e3w(:,:,jk,Kmm) * tmask(:,:,jk)
zws(:,:,jk) = avt_evd(:,:,jk) * ( ts(:,:,jk-1,jp_sal,Krhs) - ts(:,:,jk,jp_sal,Krhs) ) &
& / e3w(:,:,jk,Kmm) * tmask(:,:,jk)
END DO
!
ztrdt(:,:,jpk) = 0._wp ; ztrds(:,:,jpk) = 0._wp
DO jk = 1, jpkm1
ztrdt(:,:,jk) = ( zwt(:,:,jk) - zwt(:,:,jk+1) ) / e3t(:,:,jk,Kmm)
ztrds(:,:,jk) = ( zws(:,:,jk) - zws(:,:,jk+1) ) / e3t(:,:,jk,Kmm)
END DO
CALL trd_tra_mng( ztrdt, ztrds, jptra_evd, kt, Kmm )
!
DEALLOCATE( zwt, zws, ztrdt )
!
CASE DEFAULT ! other trends: mask and send T & S trends to trd_tra_mng
ztrds(:,:,:) = ptrd(:,:,:) * tmask(:,:,:)
CALL trd_tra_mng( trdt, ztrds, ktrd, kt, Kmm )
END SELECT
ENDIF
IF( ctype == 'TRC' ) THEN !== passive tracer trend ==!
!
SELECT CASE( ktrd*i01 )
! ! advection: transform the advective flux into a masked trend
CASE( jptra_xad ) ; CALL trd_tra_adv( ptrd , pu , ptra, 'X', ztrds, Kmm )
CASE( jptra_yad ) ; CALL trd_tra_adv( ptrd , pu , ptra, 'Y', ztrds, Kmm )
CASE( jptra_zad ) ; CALL trd_tra_adv( ptrd , pu , ptra, 'Z', ztrds, Kmm )
CASE DEFAULT ! other trends: just masked
ztrds(:,:,:) = ptrd(:,:,:) * tmask(:,:,:)
END SELECT
! ! send trend to trd_trc
CALL trd_trc( ztrds, ktra, ktrd, kt, Kmm )
!
ENDIF
!
END SUBROUTINE trd_tra
SUBROUTINE trd_tra_adv( pf, pu, pt, cdir, ptrd, Kmm )
!!---------------------------------------------------------------------
!! *** ROUTINE trd_tra_adv ***
!!
!! ** Purpose : transformed a advective flux into a masked advective trends
!!
!! ** Method : use the following transformation: -div(U.T) = - U grad(T) + T.div(U)
!! i-advective trends = -un. di-1[T] = -( di-1[fi] - tn di-1[un] )
!! j-advective trends = -un. di-1[T] = -( dj-1[fi] - tn dj-1[un] )
!! k-advective trends = -un. di+1[T] = -( dk+1[fi] - tn dk+1[un] )
!! where fi is the incoming advective flux.
!!----------------------------------------------------------------------
REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in ) :: pf ! advective flux in one direction
REAL(wp), DIMENSION(jpi,jpj,jpk), INTENT(in ) :: pu ! now velocity in one direction
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REAL(dp), DIMENSION(jpi,jpj,jpk), INTENT(in ) :: pt ! now or before tracer
CHARACTER(len=1) , INTENT(in ) :: cdir ! X/Y/Z direction
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REAL(dp), DIMENSION(jpi,jpj,jpk), INTENT( out) :: ptrd ! advective trend in one direction
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INTEGER, INTENT(in) :: Kmm ! time level index
!
INTEGER :: ji, jj, jk ! dummy loop indices
INTEGER :: ii, ij, ik ! index shift as function of the direction
!!----------------------------------------------------------------------
!
SELECT CASE( cdir ) ! shift depending on the direction
CASE( 'X' ) ; ii = 1 ; ij = 0 ; ik = 0 ! i-trend
CASE( 'Y' ) ; ii = 0 ; ij = 1 ; ik = 0 ! j-trend
CASE( 'Z' ) ; ii = 0 ; ij = 0 ; ik =-1 ! k-trend
END SELECT
!
! ! set to zero uncomputed values
ptrd(jpi,:,:) = 0._wp ; ptrd(1,:,:) = 0._wp
ptrd(:,jpj,:) = 0._wp ; ptrd(:,1,:) = 0._wp
ptrd(:,:,jpk) = 0._wp
!
DO_3D( 0, 0, 0, 0, 1, jpkm1 ) ! advective trend
ptrd(ji,jj,jk) = - ( pf (ji,jj,jk) - pf (ji-ii,jj-ij,jk-ik) &
& - ( pu(ji,jj,jk) - pu(ji-ii,jj-ij,jk-ik) ) * pt(ji,jj,jk) ) &
& * r1_e1e2t(ji,jj) / e3t(ji,jj,jk,Kmm) * tmask(ji,jj,jk)
END_3D
!
END SUBROUTINE trd_tra_adv
SUBROUTINE trd_tra_mng( ptrdx, ptrdy, ktrd, kt, Kmm )
!!---------------------------------------------------------------------
!! *** ROUTINE trd_tra_mng ***
!!
!! ** Purpose : Dispatch all tracer trends computation, e.g. 3D output,
!! integral constraints, potential energy, and/or
!! mixed layer budget.
!!----------------------------------------------------------------------
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REAL(dp), DIMENSION(:,:,:), INTENT(inout) :: ptrdx ! Temperature or U trend
REAL(dp), DIMENSION(:,:,:), INTENT(inout) :: ptrdy ! Salinity or V trend
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INTEGER , INTENT(in ) :: ktrd ! tracer trend index
INTEGER , INTENT(in ) :: kt ! time step
INTEGER , INTENT(in ) :: Kmm ! time level index
!!----------------------------------------------------------------------
! ! 3D output of tracers trends using IOM interface
IF( ln_tra_trd ) CALL trd_tra_iom ( ptrdx, ptrdy, ktrd, kt, Kmm )
! ! Integral Constraints Properties for tracers trends !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
IF( ln_glo_trd ) CALL trd_glo( ptrdx, ptrdy, ktrd, 'TRA', kt, Kmm )
! ! Potential ENergy trends
IF( ln_PE_trd ) CALL trd_pen( ptrdx, ptrdy, ktrd, kt, rDt, Kmm )
! ! Mixed layer trends for active tracers
IF( ln_tra_mxl ) THEN
!-----------------------------------------------------------------------------------------------
! W.A.R.N.I.N.G :
! jptra_ldf : called by traldf.F90
! at this stage we store:
! - the lateral geopotential diffusion (here, lateral = horizontal)
! - and the iso-neutral diffusion if activated
! jptra_zdf : called by trazdf.F90
! * in case of iso-neutral diffusion we store the vertical diffusion component in the
! lateral trend including the K_z contrib, which will be removed later (see trd_mxl)
!-----------------------------------------------------------------------------------------------
SELECT CASE ( ktrd )
CASE ( jptra_xad ) ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_xad, '3D' ) ! zonal advection
CASE ( jptra_yad ) ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_yad, '3D' ) ! merid. advection
CASE ( jptra_zad ) ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_zad, '3D' ) ! vertical advection
CASE ( jptra_ldf ) ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_ldf, '3D' ) ! lateral diffusion
CASE ( jptra_bbl ) ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_bbl, '3D' ) ! bottom boundary layer
CASE ( jptra_zdf )
IF( ln_traldf_iso ) THEN ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_ldf, '3D' ) ! lateral diffusion (K_z)
ELSE ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_zdf, '3D' ) ! vertical diffusion (K_z)
ENDIF
CASE ( jptra_dmp ) ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_dmp, '3D' ) ! internal 3D restoring (tradmp)
CASE ( jptra_qsr ) ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_for, '3D' ) ! air-sea : penetrative sol radiat
CASE ( jptra_nsr ) ; ptrdx(:,:,2:jpk) = 0._wp ; ptrdy(:,:,2:jpk) = 0._wp
CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_for, '2D' ) ! air-sea : non penetr sol radiation
CASE ( jptra_bbc ) ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_bbc, '3D' ) ! bottom bound cond (geoth flux)
CASE ( jptra_npc ) ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_npc, '3D' ) ! non penetr convect adjustment
CASE ( jptra_atf ) ; CALL trd_mxl_zint( ptrdx, ptrdy, jpmxl_atf, '3D' ) ! asselin time filter (last trend)
!
CALL trd_mxl( kt, rDt ) ! trends: Mixed-layer (output)
END SELECT
!
ENDIF
!
END SUBROUTINE trd_tra_mng
SUBROUTINE trd_tra_iom( ptrdx, ptrdy, ktrd, kt, Kmm )
!!---------------------------------------------------------------------
!! *** ROUTINE trd_tra_iom ***
!!
!! ** Purpose : output 3D tracer trends using IOM
!!----------------------------------------------------------------------
sparonuz
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REAL(dp), DIMENSION(:,:,:), INTENT(inout) :: ptrdx ! Temperature or U trend
REAL(dp), DIMENSION(:,:,:), INTENT(inout) :: ptrdy ! Salinity or V trend
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INTEGER , INTENT(in ) :: ktrd ! tracer trend index
INTEGER , INTENT(in ) :: kt ! time step
INTEGER , INTENT(in ) :: Kmm ! time level index
!!
INTEGER :: ji, jj, jk ! dummy loop indices
INTEGER :: ikbu, ikbv ! local integers
REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: z2dx, z2dy ! 2D workspace
!!----------------------------------------------------------------------
!
!!gm Rq: mask the trends already masked in trd_tra, but lbc_lnk should probably be added
!
! Trends evaluated every time step that could go to the standard T file and can be output every ts into a 1ts file if 1ts output is selected
SELECT CASE( ktrd )
! This total trend is done every time step
CASE( jptra_tot ) ; CALL iom_put( "ttrd_tot" , ptrdx ) ! model total trend
CALL iom_put( "strd_tot" , ptrdy )
END SELECT
!
! These trends are done every second time step. When 1ts output is selected must go different (2ts) file from standard T-file
IF( MOD( kt, 2 ) == 0 ) THEN
SELECT CASE( ktrd )
CASE( jptra_xad ) ; CALL iom_put( "ttrd_xad" , ptrdx ) ! x- horizontal advection
CALL iom_put( "strd_xad" , ptrdy )
CASE( jptra_yad ) ; CALL iom_put( "ttrd_yad" , ptrdx ) ! y- horizontal advection
CALL iom_put( "strd_yad" , ptrdy )
CASE( jptra_zad ) ; CALL iom_put( "ttrd_zad" , ptrdx ) ! z- vertical advection
CALL iom_put( "strd_zad" , ptrdy )
IF( ln_linssh ) THEN ! cst volume : adv flux through z=0 surface
ALLOCATE( z2dx(jpi,jpj), z2dy(jpi,jpj) )
z2dx(:,:) = ww(:,:,1) * ts(:,:,1,jp_tem,Kmm) / e3t(:,:,1,Kmm)
z2dy(:,:) = ww(:,:,1) * ts(:,:,1,jp_sal,Kmm) / e3t(:,:,1,Kmm)
CALL iom_put( "ttrd_sad", z2dx )
CALL iom_put( "strd_sad", z2dy )
DEALLOCATE( z2dx, z2dy )
ENDIF
CASE( jptra_totad ) ; CALL iom_put( "ttrd_totad", ptrdx ) ! total advection
CALL iom_put( "strd_totad", ptrdy )
CASE( jptra_ldf ) ; CALL iom_put( "ttrd_ldf" , ptrdx ) ! lateral diffusion
CALL iom_put( "strd_ldf" , ptrdy )
CASE( jptra_zdf ) ; CALL iom_put( "ttrd_zdf" , ptrdx ) ! vertical diffusion (including Kz contribution)
CALL iom_put( "strd_zdf" , ptrdy )
CASE( jptra_zdfp ) ; CALL iom_put( "ttrd_zdfp" , ptrdx ) ! PURE vertical diffusion (no isoneutral contribution)
CALL iom_put( "strd_zdfp" , ptrdy )
CASE( jptra_evd ) ; CALL iom_put( "ttrd_evd" , ptrdx ) ! EVD trend (convection)
CALL iom_put( "strd_evd" , ptrdy )
CASE( jptra_dmp ) ; CALL iom_put( "ttrd_dmp" , ptrdx ) ! internal restoring (damping)
CALL iom_put( "strd_dmp" , ptrdy )
CASE( jptra_bbl ) ; CALL iom_put( "ttrd_bbl" , ptrdx ) ! bottom boundary layer
CALL iom_put( "strd_bbl" , ptrdy )
CASE( jptra_npc ) ; CALL iom_put( "ttrd_npc" , ptrdx ) ! static instability mixing
CALL iom_put( "strd_npc" , ptrdy )
CASE( jptra_bbc ) ; CALL iom_put( "ttrd_bbc" , ptrdx ) ! geothermal heating (only on temperature)
CASE( jptra_nsr ) ; CALL iom_put( "ttrd_qns" , ptrdx(:,:,1) ) ! surface forcing + runoff (ln_rnf=T)
CALL iom_put( "strd_cdt" , ptrdy(:,:,1) ) ! output as 2D surface fields
CASE( jptra_qsr ) ; CALL iom_put( "ttrd_qsr" , ptrdx ) ! penetrative solar radiat. (only on temperature)
END SELECT
! the Asselin filter trend is also every other time step but needs to be lagged one time step
! Even when 1ts output is selected can go to the same (2ts) file as the trends plotted every even time step.
ELSE IF( MOD( kt, 2 ) == 1 ) THEN
SELECT CASE( ktrd )
CASE( jptra_atf ) ; CALL iom_put( "ttrd_atf" , ptrdx ) ! asselin time Filter
CALL iom_put( "strd_atf" , ptrdy )
END SELECT
END IF
!
END SUBROUTINE trd_tra_iom
!!======================================================================
END MODULE trdtra