MODULE traldf !!====================================================================== !! *** MODULE traldf *** !! Ocean Active tracers : lateral diffusive trends !!===================================================================== !! History : 9.0 ! 2005-11 (G. Madec) Original code !! NEMO 3.0 ! 2008-01 (C. Ethe, G. Madec) merge TRC-TRA !! 3.7 ! 2013-12 (G. Madec) remove the optional computation from T & S anomaly profiles and traldf_bilapg !! - ! 2013-12 (F. Lemarie, G. Madec) triad operator (Griffies) + Method of Stabilizing Correction !! - ! 2014-01 (G. Madec, S. Masson) restructuration/simplification of lateral diffusive operators !!---------------------------------------------------------------------- !!---------------------------------------------------------------------- !! tra_ldf : update the tracer trend with the lateral diffusion trend !! tra_ldf_init : initialization, namelist read, and parameters control !!---------------------------------------------------------------------- USE oce ! ocean dynamics and tracers USE dom_oce ! ocean space and time domain USE phycst ! physical constants USE ldftra ! lateral diffusion: eddy diffusivity & EIV coeff. USE ldfslp ! lateral diffusion: iso-neutral slope USE traldf_lap_blp ! lateral diffusion: laplacian iso-level operator (tra_ldf_lap/_blp routines) USE traldf_iso ! lateral diffusion: laplacian iso-neutral standard operator (tra_ldf_iso routine ) USE traldf_triad ! lateral diffusion: laplacian iso-neutral triad operator (tra_ldf_triad routine ) USE trd_oce ! trends: ocean variables USE trdtra ! ocean active tracers trends ! USE prtctl ! Print control USE in_out_manager ! I/O manager USE lib_mpp ! distribued memory computing library USE lbclnk ! ocean lateral boundary conditions (or mpp link) USE timing ! Timing IMPLICIT NONE PRIVATE PUBLIC tra_ldf ! called by step.F90 PUBLIC tra_ldf_init ! called by nemogcm.F90 !! * Substitutions # include "vectopt_loop_substitute.h90" !!---------------------------------------------------------------------- !! NEMO/OCE 4.0 , NEMO Consortium (2018) !! $Id$ !! Software governed by the CeCILL license (see ./LICENSE) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE tra_ldf( kt ) !!---------------------------------------------------------------------- !! *** ROUTINE tra_ldf *** !! !! ** Purpose : compute the lateral ocean tracer physics. !!---------------------------------------------------------------------- INTEGER, INTENT( in ) :: kt ! ocean time-step index !! REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: ztrdt, ztrds !!---------------------------------------------------------------------- ! IF( ln_timing ) CALL timing_start('tra_ldf') ! IF( l_trdtra ) THEN !* Save ta and sa trends ALLOCATE( ztrdt(jpi,jpj,jpk) , ztrds(jpi,jpj,jpk) ) ztrdt(:,:,:) = tsa(:,:,:,jp_tem) ztrds(:,:,:) = tsa(:,:,:,jp_sal) ENDIF ! SELECT CASE ( nldf_tra ) !* compute lateral mixing trend and add it to the general trend CASE ( np_lap ) ! laplacian: iso-level operator CALL tra_ldf_lap ( kt, nit000,'TRA', ahtu, ahtv, gtsu, gtsv, gtui, gtvi, tsb, tsa, jpts, 1 ) CASE ( np_lap_i ) ! laplacian: standard iso-neutral operator (Madec) CALL tra_ldf_iso ( kt, nit000,'TRA', ahtu, ahtv, gtsu, gtsv, gtui, gtvi, tsb, tsb, tsa, jpts, 1 ) CASE ( np_lap_it ) ! laplacian: triad iso-neutral operator (griffies) CALL tra_ldf_triad( kt, nit000,'TRA', ahtu, ahtv, gtsu, gtsv, gtui, gtvi, tsb, tsb, tsa, jpts, 1 ) CASE ( np_blp , np_blp_i , np_blp_it ) ! bilaplacian: iso-level & iso-neutral operators CALL tra_ldf_blp ( kt, nit000,'TRA', ahtu, ahtv, gtsu, gtsv, gtui, gtvi, tsb , tsa, jpts, nldf_tra ) END SELECT ! IF( l_trdtra ) THEN !* save the horizontal diffusive trends for further diagnostics ztrdt(:,:,:) = tsa(:,:,:,jp_tem) - ztrdt(:,:,:) ztrds(:,:,:) = tsa(:,:,:,jp_sal) - ztrds(:,:,:) CALL trd_tra( kt, 'TRA', jp_tem, jptra_ldf, ztrdt ) CALL trd_tra( kt, 'TRA', jp_sal, jptra_ldf, ztrds ) DEALLOCATE( ztrdt, ztrds ) ENDIF ! !* print mean trends (used for debugging) IF(ln_ctl) CALL prt_ctl( tab3d_1=tsa(:,:,:,jp_tem), clinfo1=' ldf - Ta: ', mask1=tmask, & & tab3d_2=tsa(:,:,:,jp_sal), clinfo2= ' Sa: ', mask2=tmask, clinfo3='tra' ) ! IF( ln_timing ) CALL timing_stop('tra_ldf') ! END SUBROUTINE tra_ldf SUBROUTINE tra_ldf_init !!---------------------------------------------------------------------- !! *** ROUTINE tra_ldf_init *** !! !! ** Purpose : Choice of the operator for the lateral tracer diffusion !! !! ** Method : set nldf_tra from the namtra_ldf logicals !!---------------------------------------------------------------------- INTEGER :: ioptio, ierr ! temporary integers !!---------------------------------------------------------------------- ! IF(lwp) THEN !== Namelist print ==! WRITE(numout,*) WRITE(numout,*) 'tra_ldf_init : lateral tracer diffusive operator' WRITE(numout,*) '~~~~~~~~~~~~' WRITE(numout,*) ' Namelist namtra_ldf: already read in ldftra module' WRITE(numout,*) ' see ldf_tra_init report for lateral mixing parameters' WRITE(numout,*) ! SELECT CASE( nldf_tra ) ! print the choice of operator CASE( np_no_ldf ) ; WRITE(numout,*) ' ==>>> NO lateral diffusion' CASE( np_lap ) ; WRITE(numout,*) ' ==>>> laplacian iso-level operator' CASE( np_lap_i ) ; WRITE(numout,*) ' ==>>> Rotated laplacian operator (standard)' CASE( np_lap_it ) ; WRITE(numout,*) ' ==>>> Rotated laplacian operator (triad)' CASE( np_blp ) ; WRITE(numout,*) ' ==>>> bilaplacian iso-level operator' CASE( np_blp_i ) ; WRITE(numout,*) ' ==>>> Rotated bilaplacian operator (standard)' CASE( np_blp_it ) ; WRITE(numout,*) ' ==>>> Rotated bilaplacian operator (triad)' END SELECT ENDIF ! END SUBROUTINE tra_ldf_init !!====================================================================== END MODULE traldf