MODULE traldf_blp !!====================================================================== !! *** MODULE traldf_blp *** !! Ocean tracers: bilaplacian lateral mixing trend on tracers !!====================================================================== !! History : 3.7 ! 2015-09 (G. Madec) original code !!---------------------------------------------------------------------- !!---------------------------------------------------------------------- !! traldf_blp : update the tracer trend with the bilaplacian lateral mixing trend !!---------------------------------------------------------------------- USE oce ! ocean dynamics and active tracers USE dom_oce ! ocean space and time domain USE phycst ! physical constants USE trc_oce ! share passive tracers/Ocean variables USE zdf_oce ! ocean vertical physics USE ldftra ! lateral physics: eddy diffusivity USE ldfslp ! lateral physics: iso-neutral slopes USE traldf_lap ! lateral diffusion (Standard operator) (tra_ldf_lap routine) USE traldf_iso ! lateral diffusion (Standard operator) (tra_ldf_iso routine) USE traldf_triad ! lateral diffusion (Standard operator) (tra_ldf_triad routine) USE diaptr ! poleward transport diagnostics USE zpshde ! partial step: hor. derivative (zps_hde routine) ! USE in_out_manager ! I/O manager USE iom ! I/O library USE lbclnk ! ocean lateral boundary conditions (or mpp link) USE lib_mpp ! MPP library USE wrk_nemo ! Memory Allocation USE timing ! Timing IMPLICIT NONE PRIVATE PUBLIC tra_ldf_blp ! routine called by traldf.F90 ! ! Flag to control the type of lateral diffusive operator INTEGER, PARAMETER, PUBLIC :: np_ERROR =-10 ! error in specification of lateral diffusion INTEGER, PARAMETER, PUBLIC :: np_no_ldf = 00 ! without operator (i.e. no lateral diffusive trend) ! !! laplacian ! bilaplacian ! INTEGER, PARAMETER, PUBLIC :: np_lap = 10 , np_blp = 20 ! iso-level operator INTEGER, PARAMETER, PUBLIC :: np_lap_i = 11 , np_blp_i = 21 ! standard iso-neutral or geopotential operator INTEGER, PARAMETER, PUBLIC :: np_lap_it = 12 , np_blp_it = 22 ! triad iso-neutral or geopotential operator REAL(wp), DIMENSION(:,:,:), ALLOCATABLE, SAVE :: zdkt3d !: vertical tracer gradient at 2 levels !! * Substitutions # include "domzgr_substitute.h90" # include "vectopt_loop_substitute.h90" !!---------------------------------------------------------------------- !! NEMO/OPA 3.7 , NEMO Consortium (2015) !! $Id$ !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE tra_ldf_blp( kt, kit000, cdtype, pahu, pahv, pgu , pgv , & & pgui, pgvi, & & ptb , pta , kjpt, kldf ) !!---------------------------------------------------------------------- !! *** ROUTINE tra_ldf_blp *** !! !! ** Purpose : Compute the before lateral tracer diffusive !! trend and add it to the general trend of tracer equation. !! !! ** Method : The lateral diffusive trends is provided by a bilaplacian !! operator applied to before field (forward in time). !! It is computed by two successive calls to laplacian routine !! !! ** Action : pta updated with the before rotated bilaplacian diffusion !!---------------------------------------------------------------------- INTEGER , INTENT(in ) :: kt ! ocean time-step index INTEGER , INTENT(in ) :: kit000 ! first time step index CHARACTER(len=3) , INTENT(in ) :: cdtype ! =TRA or TRC (tracer indicator) INTEGER , INTENT(in ) :: kjpt ! number of tracers INTEGER , INTENT(in ) :: kldf ! type of operator used REAL(wp), DIMENSION(jpi,jpj,jpk) , INTENT(in ) :: pahu, pahv ! eddy diffusivity at u- and v-points [m2/s] REAL(wp), DIMENSION(jpi,jpj ,kjpt), INTENT(in ) :: pgu, pgv ! tracer gradient at pstep levels REAL(wp), DIMENSION(jpi,jpj, kjpt), INTENT(in ) :: pgui, pgvi ! tracer gradient at top levels REAL(wp), DIMENSION(jpi,jpj,jpk,kjpt), INTENT(in ) :: ptb ! before and now tracer fields REAL(wp), DIMENSION(jpi,jpj,jpk,kjpt), INTENT(inout) :: pta ! tracer trend ! INTEGER :: ji, jj, jk, jn ! dummy loop indices REAL(wp), POINTER, DIMENSION(:,:,:,:) :: zlap ! laplacian at t-point REAL(wp), POINTER, DIMENSION(:,:,:) :: zglu, zglv ! bottom GRADh of the laplacian (u- and v-points) REAL(wp), POINTER, DIMENSION(:,:,:) :: zgui, zgvi ! top GRADh of the laplacian (u- and v-points) !!--------------------------------------------------------------------- ! IF( nn_timing == 1 ) CALL timing_start('tra_ldf_blp') ! CALL wrk_alloc( jpi,jpj,jpk,kjpt, zlap ) CALL wrk_alloc( jpi,jpj, kjpt, zglu, zglv, zgui, zgvi ) ! IF( kt == kit000 .AND. lwp ) THEN WRITE(numout,*) SELECT CASE ( kldf ) CASE ( np_blp ) ; WRITE(numout,*) 'tra_ldf_blp : iso-level bilaplacian operator on ', cdtype CASE ( np_blp_i ) ; WRITE(numout,*) 'tra_ldf_blp : iso-neutral bilaplacian operator on ', cdtype, ' (Standard)' CASE ( np_blp_it ) ; WRITE(numout,*) 'tra_ldf_blp : iso-neutral bilaplacian operator on ', cdtype, ' (triad)' END SELECT WRITE(numout,*) '~~~~~~~~~~~' ENDIF zlap(:,:,:,:) = 0._wp ! SELECT CASE ( kldf ) !== 1st laplacian applied to ptb (output in zlap) ==! ! CASE ( np_blp ) ! iso-level bilaplacian CALL tra_ldf_lap ( kt, kit000, cdtype, pahu, pahv, pgu, pgv, pgui, pgvi, ptb, zlap, kjpt, 1 ) ! CASE ( np_blp_i ) ! rotated bilaplacian : standard operator (Madec) CALL tra_ldf_iso ( kt, kit000, cdtype, pahu, pahv, pgu, pgv, pgui, pgvi, ptb, ptb, zlap, kjpt, 1 ) ! CASE ( np_blp_it ) ! rotated bilaplacian : triad operator (griffies) CALL tra_ldf_triad( kt, kit000, cdtype, pahu, pahv, pgu, pgv, pgui, pgvi, ptb, ptb, zlap, kjpt, 1 ) ! END SELECT ! DO jn = 1, kjpt CALL lbc_lnk( zlap(:,:,:,jn) , 'T', 1. ) ! Lateral boundary conditions (unchanged sign) END DO ! ! Partial top/bottom cell: GRADh( zlap ) IF( ln_isfcav .AND. ln_zps ) THEN ; CALL zps_hde_isf( kt, kjpt, zlap, zglu, zglv, zgui, zgvi ) ! both top & bottom ELSEIF( ln_zps ) THEN ; CALL zps_hde ( kt, kjpt, zlap, zglu, zglv ) ! only bottom ENDIF ! SELECT CASE ( kldf ) !== 2nd laplacian applied to zlap (output in pta) ==! ! CASE ( np_blp ) ! iso-level bilaplacian CALL tra_ldf_lap ( kt, kit000, cdtype, pahu, pahv, zglu, zglv, zgui, zgvi, zlap, pta, kjpt, 2 ) ! CASE ( np_blp_i ) ! rotated bilaplacian : standard operator (Madec) CALL tra_ldf_iso ( kt, kit000, cdtype, pahu, pahv, zglu, zglv, zgui, zgvi, zlap, ptb, pta, kjpt, 2 ) ! CASE ( np_blp_it ) ! rotated bilaplacian : triad operator (griffies) CALL tra_ldf_triad( kt, kit000, cdtype, pahu, pahv, zglu, zglv, zgui, zgvi, zlap, ptb, pta, kjpt, 2 ) ! END SELECT ! CALL wrk_dealloc( jpi,jpj,jpk,kjpt, zlap ) CALL wrk_dealloc( jpi,jpj ,kjpt, zglu, zglv, zgui, zgvi ) ! IF( nn_timing == 1 ) CALL timing_stop('tra_ldf_blp') ! END SUBROUTINE tra_ldf_blp !!============================================================================== END MODULE traldf_blp