Context Navigation

zdftke.F90 @ 11872

Last change on this file since 11872 was 11872, checked in by acc, 4 years ago

Branch 2019/fix_sn_cfctl_ticket2328. See #2328. Replacement of ln_ctl and activation of full functionality with
sn_cfctl structure. These changes rename structure components l_mppout and l_mpptop as l_prtctl and l_prttrc
and introduce l_glochk to activate former ln_ctl code in stpctl.F90 to perform global location of min and max
checks. Also added is l_allon which can be used to activate all output (much like the former ln_ctl). If l_allon
is .false. then l_config decides whether or not the suboptions are used.

   sn_cfctl%l_glochk = .FALSE.    ! Range sanity checks are local (F) or global (T). Set T for debugging only
   sn_cfctl%l_allon  = .FALSE.    ! IF T activate all options. If F deactivate all unless l_config is T
   sn_cfctl%l_config = .TRUE.     ! IF .true. then control which reports are written with the remaining options

Note, these changes pass SETTE tests but all references to ln_ctl need to be removed from the sette scripts.

Property svn:keywords set to Id

File size: 43.7 KB

Rev	Line
[1531]	1	MODULE zdftke
[1239]	2	!!======================================================================
[1531]	3	!! * MODULE zdftke *
[1239]	4	!! Ocean physics: vertical mixing coefficient computed from the tke
	5	!! turbulent closure parameterization
	6	!!=====================================================================
[1492]	7	!! History : OPA ! 1991-03 (b. blanke) Original code
	8	!! 7.0 ! 1991-11 (G. Madec) bug fix
	9	!! 7.1 ! 1992-10 (G. Madec) new mixing length and eav
	10	!! 7.2 ! 1993-03 (M. Guyon) symetrical conditions
	11	!! 7.3 ! 1994-08 (G. Madec, M. Imbard) nn_pdl flag
	12	!! 7.5 ! 1996-01 (G. Madec) s-coordinates
	13	!! 8.0 ! 1997-07 (G. Madec) lbc
	14	!! 8.1 ! 1999-01 (E. Stretta) new option for the mixing length
	15	!! NEMO 1.0 ! 2002-06 (G. Madec) add tke_init routine
	16	!! - ! 2004-10 (C. Ethe ) 1D configuration
	17	!! 2.0 ! 2006-07 (S. Masson) distributed restart using iom
	18	!! 3.0 ! 2008-05 (C. Ethe, G.Madec) : update TKE physics:
	19	!! ! - tke penetration (wind steering)
	20	!! ! - suface condition for tke & mixing length
	21	!! ! - Langmuir cells
	22	!! - ! 2008-05 (J.-M. Molines, G. Madec) 2D form of avtb
	23	!! - ! 2008-06 (G. Madec) style + DOCTOR name for namelist parameters
	24	!! - ! 2008-12 (G. Reffray) stable discretization of the production term
	25	!! 3.2 ! 2009-06 (G. Madec, S. Masson) TKE restart compatible with key_cpl
	26	!! ! + cleaning of the parameters + bugs correction
[2528]	27	!! 3.3 ! 2010-10 (C. Ethe, G. Madec) reorganisation of initialisation phase
[5120]	28	!! 3.6 ! 2014-11 (P. Mathiot) add ice shelf capability
[9019]	29	!! 4.0 ! 2017-04 (G. Madec) remove CPP ddm key & avm at t-point only
	30	!! - ! 2017-05 (G. Madec) add top/bottom friction as boundary condition (ln_drg)
[1239]	31	!!----------------------------------------------------------------------
[9019]	32
[1239]	33	!!----------------------------------------------------------------------
[3625]	34	!! zdf_tke : update momentum and tracer Kz from a tke scheme
	35	!! tke_tke : tke time stepping: update tke at now time step (en)
	36	!! tke_avn : compute mixing length scale and deduce avm and avt
	37	!! zdf_tke_init : initialization, namelist read, and parameters control
	38	!! tke_rst : read/write tke restart in ocean restart file
[1239]	39	!!----------------------------------------------------------------------
[2528]	40	USE oce ! ocean: dynamics and active tracers variables
	41	USE phycst ! physical constants
	42	USE dom_oce ! domain: ocean
	43	USE domvvl ! domain: variable volume layer
[1492]	44	USE sbc_oce ! surface boundary condition: ocean
[9019]	45	USE zdfdrg ! vertical physics: top/bottom drag coef.
[2528]	46	USE zdfmxl ! vertical physics: mixed layer
[9019]	47	!
[1492]	48	USE in_out_manager ! I/O manager
	49	USE iom ! I/O manager library
[2715]	50	USE lib_mpp ! MPP library
[9019]	51	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
	52	USE prtctl ! Print control
[3625]	53	USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined)
[1239]	54
	55	IMPLICIT NONE
	56	PRIVATE
	57
[2528]	58	PUBLIC zdf_tke ! routine called in step module
	59	PUBLIC zdf_tke_init ! routine called in opa module
	60	PUBLIC tke_rst ! routine called in step module
[1239]	61
[4147]	62	! !! Namelist namzdf_tke
	63	LOGICAL :: ln_mxl0 ! mixing length scale surface value as function of wind stress or not
	64	INTEGER :: nn_mxl ! type of mixing length (=0/1/2/3)
	65	REAL(wp) :: rn_mxl0 ! surface min value of mixing length (kappaz_o=0.40.1 m) [m]
	66	INTEGER :: nn_pdl ! Prandtl number or not (ratio avt/avm) (=0/1)
	67	REAL(wp) :: rn_ediff ! coefficient for avt: avt=rn_ediffmxlsqrt(e)
	68	REAL(wp) :: rn_ediss ! coefficient of the Kolmogoroff dissipation
	69	REAL(wp) :: rn_ebb ! coefficient of the surface input of tke
	70	REAL(wp) :: rn_emin ! minimum value of tke [m2/s2]
	71	REAL(wp) :: rn_emin0 ! surface minimum value of tke [m2/s2]
	72	REAL(wp) :: rn_bshear ! background shear (>0) currently a numerical threshold (do not change it)
[9019]	73	LOGICAL :: ln_drg ! top/bottom friction forcing flag
[4147]	74	INTEGER :: nn_etau ! type of depth penetration of surface tke (=0/1/2/3)
[9019]	75	INTEGER :: nn_htau ! type of tke profile of penetration (=0/1)
	76	REAL(wp) :: rn_efr ! fraction of TKE surface value which penetrates in the ocean
[9546]	77	REAL(wp) :: rn_eice ! =0 ON below sea-ice, =4 OFF when ice fraction > 1/4
[4147]	78	LOGICAL :: ln_lc ! Langmuir cells (LC) as a source term of TKE or not
[9019]	79	REAL(wp) :: rn_lc ! coef to compute vertical velocity of Langmuir cells
[1239]	80
[4147]	81	REAL(wp) :: ri_cri ! critic Richardson number (deduced from rn_ediff and rn_ediss values)
	82	REAL(wp) :: rmxl_min ! minimum mixing length value (deduced from rn_ediff and rn_emin values) [m]
[2528]	83	REAL(wp) :: rhftau_add = 1.e-3_wp ! add offset applied to HF part of taum (nn_etau=3)
	84	REAL(wp) :: rhftau_scl = 1.0_wp ! scale factor applied to HF part of taum (nn_etau=3)
[1239]	85
[9019]	86	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: htau ! depth of tke penetration (nn_htau)
	87	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: dissl ! now mixing lenght of dissipation
	88	REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: apdlr ! now mixing lenght of dissipation
[1492]	89
[1239]	90	!! * Substitutions
	91	# include "vectopt_loop_substitute.h90"
	92	!!----------------------------------------------------------------------
[9598]	93	!! NEMO/OCE 4.0 , NEMO Consortium (2018)
[2528]	94	!! $Id$
[10068]	95	!! Software governed by the CeCILL license (see ./LICENSE)
[1239]	96	!!----------------------------------------------------------------------
	97	CONTAINS
	98
[2715]	99	INTEGER FUNCTION zdf_tke_alloc()
	100	!!----------------------------------------------------------------------
	101	!! * FUNCTION zdf_tke_alloc *
	102	!!----------------------------------------------------------------------
[9019]	103	ALLOCATE( htau(jpi,jpj) , dissl(jpi,jpj,jpk) , apdlr(jpi,jpj,jpk) , STAT= zdf_tke_alloc )
	104	!
[10425]	105	CALL mpp_sum ( 'zdftke', zdf_tke_alloc )
	106	IF( zdf_tke_alloc /= 0 ) CALL ctl_stop( 'STOP', 'zdf_tke_alloc: failed to allocate arrays' )
[2715]	107	!
	108	END FUNCTION zdf_tke_alloc
	109
	110
[9019]	111	SUBROUTINE zdf_tke( kt, p_sh2, p_avm, p_avt )
[1239]	112	!!----------------------------------------------------------------------
[1531]	113	!! * ROUTINE zdf_tke *
[1239]	114	!!
	115	!! ** Purpose : Compute the vertical eddy viscosity and diffusivity
[1492]	116	!! coefficients using a turbulent closure scheme (TKE).
[1239]	117	!!
[1492]	118	!! ** Method : The time evolution of the turbulent kinetic energy (tke)
	119	!! is computed from a prognostic equation :
	120	!! d(en)/dt = avm (d(u)/dz)**2 ! shear production
	121	!! + d( avm d(en)/dz )/dz ! diffusion of tke
	122	!! + avt N^2 ! stratif. destruc.
	123	!! - rn_ediss / emxl en**(2/3) ! Kolmogoroff dissipation
[1239]	124	!! with the boundary conditions:
[1695]	125	!! surface: en = max( rn_emin0, rn_ebb * taum )
[1239]	126	!! bottom : en = rn_emin
[1492]	127	!! The associated critical Richardson number is: ri_cri = 2/(2+rn_ediss/rn_ediff)
	128	!!
	129	!! The now Turbulent kinetic energy is computed using the following
	130	!! time stepping: implicit for vertical diffusion term, linearized semi
	131	!! implicit for kolmogoroff dissipation term, and explicit forward for
	132	!! both buoyancy and shear production terms. Therefore a tridiagonal
	133	!! linear system is solved. Note that buoyancy and shear terms are
	134	!! discretized in a energy conserving form (Bruchard 2002).
	135	!!
	136	!! The dissipative and mixing length scale are computed from en and
	137	!! the stratification (see tke_avn)
	138	!!
	139	!! The now vertical eddy vicosity and diffusivity coefficients are
	140	!! given by:
	141	!! avm = max( avtb, rn_ediff * zmxlm * en^1/2 )
	142	!! avt = max( avmb, pdl * avm )
[1239]	143	!! eav = max( avmb, avm )
[1492]	144	!! where pdl, the inverse of the Prandtl number is 1 if nn_pdl=0 and
	145	!! given by an empirical funtion of the localRichardson number if nn_pdl=1
[1239]	146	!!
	147	!! ** Action : compute en (now turbulent kinetic energy)
[9019]	148	!! update avt, avm (before vertical eddy coef.)
[1239]	149	!!
	150	!! References : Gaspar et al., JGR, 1990,
	151	!! Blanke and Delecluse, JPO, 1991
	152	!! Mellor and Blumberg, JPO 2004
	153	!! Axell, JGR, 2002
[1492]	154	!! Bruchard OM 2002
[1239]	155	!!----------------------------------------------------------------------
[9019]	156	INTEGER , INTENT(in ) :: kt ! ocean time step
	157	REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: p_sh2 ! shear production term
	158	REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: p_avm, p_avt ! momentum and tracer Kz (w-points)
[1492]	159	!!----------------------------------------------------------------------
[1481]	160	!
[9019]	161	CALL tke_tke( gdepw_n, e3t_n, e3w_n, p_sh2, p_avm, p_avt ) ! now tke (en)
[5656]	162	!
[9019]	163	CALL tke_avn( gdepw_n, e3t_n, e3w_n, p_avm, p_avt ) ! now avt, avm, dissl
[3632]	164	!
[5656]	165	END SUBROUTINE zdf_tke
[1239]	166
[1492]	167
[9019]	168	SUBROUTINE tke_tke( pdepw, p_e3t, p_e3w, p_sh2, p_avm, p_avt )
[1239]	169	!!----------------------------------------------------------------------
[1492]	170	!! * ROUTINE tke_tke *
	171	!!
	172	!! ** Purpose : Compute the now Turbulente Kinetic Energy (TKE)
	173	!!
	174	!! ** Method : - TKE surface boundary condition
[2528]	175	!! - source term due to Langmuir cells (Axell JGR 2002) (ln_lc=T)
[9019]	176	!! - source term due to shear (= Kz dz[Ub] * dz[Un] )
[1492]	177	!! - Now TKE : resolution of the TKE equation by inverting
	178	!! a tridiagonal linear system by a "methode de chasse"
	179	!! - increase TKE due to surface and internal wave breaking
[9019]	180	!! NB: when sea-ice is present, both LC parameterization
	181	!! and TKE penetration are turned off when the ice fraction
	182	!! is smaller than 0.25
[1492]	183	!!
	184	!! ** Action : - en : now turbulent kinetic energy)
[1239]	185	!! ---------------------------------------------------------------------
[9019]	186	USE zdf_oce , ONLY : en ! ocean vertical physics
	187	!!
	188	REAL(wp), DIMENSION(:,:,:) , INTENT(in ) :: pdepw ! depth of w-points
	189	REAL(wp), DIMENSION(:,:,:) , INTENT(in ) :: p_e3t, p_e3w ! level thickness (t- & w-points)
	190	REAL(wp), DIMENSION(:,:,:) , INTENT(in ) :: p_sh2 ! shear production term
	191	REAL(wp), DIMENSION(:,:,:) , INTENT(in ) :: p_avm, p_avt ! vertical eddy viscosity & diffusivity (w-points)
	192	!
	193	INTEGER :: ji, jj, jk ! dummy loop arguments
	194	REAL(wp) :: zetop, zebot, zmsku, zmskv ! local scalars
	195	REAL(wp) :: zrhoa = 1.22 ! Air density kg/m3
	196	REAL(wp) :: zcdrag = 1.5e-3 ! drag coefficient
	197	REAL(wp) :: zbbrau, zri ! local scalars
	198	REAL(wp) :: zfact1, zfact2, zfact3 ! - -
	199	REAL(wp) :: ztx2 , zty2 , zcof ! - -
	200	REAL(wp) :: ztau , zdif ! - -
	201	REAL(wp) :: zus , zwlc , zind ! - -
	202	REAL(wp) :: zzd_up, zzd_lw ! - -
	203	INTEGER , DIMENSION(jpi,jpj) :: imlc
[10425]	204	REAL(wp), DIMENSION(jpi,jpj) :: zhlc, zfr_i
[9019]	205	REAL(wp), DIMENSION(jpi,jpj,jpk) :: zpelc, zdiag, zd_up, zd_lw
[1239]	206	!!--------------------------------------------------------------------
[1492]	207	!
[1695]	208	zbbrau = rn_ebb / rau0 ! Local constant initialisation
[2528]	209	zfact1 = -.5_wp * rdt
	210	zfact2 = 1.5_wp * rdt * rn_ediss
	211	zfact3 = 0.5_wp * rn_ediss
[1492]	212	!
	213	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[9019]	214	! ! Surface/top/bottom boundary condition on tke
[1492]	215	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[9019]	216
	217	DO jj = 2, jpjm1 ! en(1) = rn_ebb taum / rau0 (min value rn_emin0)
	218	DO ji = fs_2, fs_jpim1 ! vector opt.
	219	en(ji,jj,1) = MAX( rn_emin0, zbbrau * taum(ji,jj) ) * tmask(ji,jj,1)
	220	END DO
	221	END DO
[5120]	222	IF ( ln_isfcav ) THEN
	223	DO jj = 2, jpjm1 ! en(mikt(ji,jj)) = rn_emin
	224	DO ji = fs_2, fs_jpim1 ! vector opt.
[5836]	225	en(ji,jj,mikt(ji,jj)) = rn_emin * tmask(ji,jj,1)
[5120]	226	END DO
	227	END DO
[9019]	228	ENDIF
	229	!
[1492]	230	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	231	! ! Bottom boundary condition on tke
	232	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[1719]	233	!
[9019]	234	! en(bot) = (ebb0/rau0)0.5sqrt(u_botfr^2+v_botfr^2) (min value rn_emin)
	235	! where ebb0 does not includes surface wave enhancement (i.e. ebb0=3.75)
	236	! Note that stress averaged is done using an wet-only calculation of u and v at t-point like in zdfsh2
[1492]	237	!
[9019]	238	IF( ln_drg ) THEN !== friction used as top/bottom boundary condition on TKE
	239	!
	240	DO jj = 2, jpjm1 ! bottom friction
	241	DO ji = fs_2, fs_jpim1 ! vector opt.
	242	zmsku = ( 2. - umask(ji-1,jj,mbkt(ji,jj)) * umask(ji,jj,mbkt(ji,jj)) )
	243	zmskv = ( 2. - vmask(ji,jj-1,mbkt(ji,jj)) * vmask(ji,jj,mbkt(ji,jj)) )
	244	! ! where 0.001875 = (rn_ebb0/rau0) * 0.5 = 3.75*0.5/1000. (CAUTION CdU<0)
	245	zebot = - 0.001875_wp * rCdU_bot(ji,jj) * SQRT( ( zmsku( ub(ji,jj,mbkt(ji,jj))+ub(ji-1,jj,mbkt(ji,jj)) ) )*2 &
	246	& + ( zmskv( vb(ji,jj,mbkt(ji,jj))+vb(ji,jj-1,mbkt(ji,jj)) ) )*2 )
	247	en(ji,jj,mbkt(ji,jj)+1) = MAX( zebot, rn_emin ) * ssmask(ji,jj)
	248	END DO
	249	END DO
	250	IF( ln_isfcav ) THEN ! top friction
	251	DO jj = 2, jpjm1
	252	DO ji = fs_2, fs_jpim1 ! vector opt.
	253	zmsku = ( 2. - umask(ji-1,jj,mikt(ji,jj)) * umask(ji,jj,mikt(ji,jj)) )
	254	zmskv = ( 2. - vmask(ji,jj-1,mikt(ji,jj)) * vmask(ji,jj,mikt(ji,jj)) )
	255	! ! where 0.001875 = (rn_ebb0/rau0) * 0.5 = 3.75*0.5/1000. (CAUTION CdU<0)
	256	zetop = - 0.001875_wp * rCdU_top(ji,jj) * SQRT( ( zmsku( ub(ji,jj,mikt(ji,jj))+ub(ji-1,jj,mikt(ji,jj)) ) )*2 &
	257	& + ( zmskv( vb(ji,jj,mikt(ji,jj))+vb(ji,jj-1,mikt(ji,jj)) ) )*2 )
	258	en(ji,jj,mikt(ji,jj)) = MAX( zetop, rn_emin ) * (1._wp - tmask(ji,jj,1)) ! masked at ocean surface
	259	END DO
	260	END DO
	261	ENDIF
	262	!
	263	ENDIF
	264	!
[1492]	265	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[9019]	266	IF( ln_lc ) THEN ! Langmuir circulation source term added to tke ! (Axell JGR 2002)
[1492]	267	! !>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[1239]	268	!
[1492]	269	! !* total energy produce by LC : cumulative sum over jk
[9019]	270	zpelc(:,:,1) = MAX( rn2b(:,:,1), 0._wp ) * pdepw(:,:,1) * p_e3w(:,:,1)
[1239]	271	DO jk = 2, jpk
[9019]	272	zpelc(:,:,jk) = zpelc(:,:,jk-1) + MAX( rn2b(:,:,jk), 0._wp ) * pdepw(:,:,jk) * p_e3w(:,:,jk)
[1239]	273	END DO
[1492]	274	! !* finite Langmuir Circulation depth
[1705]	275	zcof = 0.5 * 0.016 * 0.016 / ( zrhoa * zcdrag )
[7753]	276	imlc(:,:) = mbkt(:,:) + 1 ! Initialization to the number of w ocean point (=2 over land)
[1239]	277	DO jk = jpkm1, 2, -1
[1492]	278	DO jj = 1, jpj ! Last w-level at which zpelc>=0.5usus
	279	DO ji = 1, jpi ! with us=0.016*wind(starting from jpk-1)
[1705]	280	zus = zcof * taum(ji,jj)
[1239]	281	IF( zpelc(ji,jj,jk) > zus ) imlc(ji,jj) = jk
	282	END DO
	283	END DO
	284	END DO
[1492]	285	! ! finite LC depth
	286	DO jj = 1, jpj
[1239]	287	DO ji = 1, jpi
[9019]	288	zhlc(ji,jj) = pdepw(ji,jj,imlc(ji,jj))
[1239]	289	END DO
	290	END DO
[1705]	291	zcof = 0.016 / SQRT( zrhoa * zcdrag )
[10425]	292	DO jj = 2, jpjm1
	293	DO ji = fs_2, fs_jpim1 ! vector opt.
	294	zus = zcof * SQRT( taum(ji,jj) ) ! Stokes drift
	295	zfr_i(ji,jj) = ( 1._wp - 4._wp * fr_i(ji,jj) ) * zus * zus * zus * tmask(ji,jj,1) ! zus > 0. ok
	296	IF (zfr_i(ji,jj) < 0. ) zfr_i(ji,jj) = 0.
	297	END DO
	298	END DO
[1492]	299	DO jk = 2, jpkm1 !* TKE Langmuir circulation source term added to en
[1239]	300	DO jj = 2, jpjm1
	301	DO ji = fs_2, fs_jpim1 ! vector opt.
[10425]	302	IF ( zfr_i(ji,jj) /= 0. ) THEN
	303	! vertical velocity due to LC
	304	IF ( pdepw(ji,jj,jk) - zhlc(ji,jj) < 0 .AND. wmask(ji,jj,jk) /= 0. ) THEN
	305	! ! vertical velocity due to LC
	306	zwlc = rn_lc * SIN( rpi * pdepw(ji,jj,jk) / zhlc(ji,jj) ) ! warning: optimization: zus^3 is in zfr_i
	307	! ! TKE Langmuir circulation source term
	308	en(ji,jj,jk) = en(ji,jj,jk) + rdt * zfr_i(ji,jj) * ( zwlc * zwlc * zwlc ) / zhlc(ji,jj)
	309	ENDIF
	310	ENDIF
[1239]	311	END DO
	312	END DO
	313	END DO
	314	!
	315	ENDIF
[1492]	316	!
	317	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	318	! ! Now Turbulent kinetic energy (output in en)
	319	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	320	! ! Resolution of a tridiagonal linear system by a "methode de chasse"
	321	! ! computation from level 2 to jpkm1 (e(1) already computed and e(jpk)=0 ).
	322	! ! zdiag : diagonal zd_up : upper diagonal zd_lw : lower diagonal
	323	!
[9019]	324	IF( nn_pdl == 1 ) THEN !* Prandtl number = F( Ri )
[5656]	325	DO jk = 2, jpkm1
	326	DO jj = 2, jpjm1
[9019]	327	DO ji = 2, jpim1
	328	! ! local Richardson number
	329	zri = MAX( rn2b(ji,jj,jk), 0._wp ) * p_avm(ji,jj,jk) / ( p_sh2(ji,jj,jk) + rn_bshear )
	330	! ! inverse of Prandtl number
[5656]	331	apdlr(ji,jj,jk) = MAX( 0.1_wp, ri_cri / MAX( ri_cri , zri ) )
	332	END DO
	333	END DO
	334	END DO
	335	ENDIF
[5836]	336	!
[5120]	337	DO jk = 2, jpkm1 !* Matrix and right hand side in en
	338	DO jj = 2, jpjm1
	339	DO ji = fs_2, fs_jpim1 ! vector opt.
[1492]	340	zcof = zfact1 * tmask(ji,jj,jk)
[9019]	341	! ! A minimum of 2.e-5 m2/s is imposed on TKE vertical
	342	! ! eddy coefficient (ensure numerical stability)
	343	zzd_up = zcof * MAX( p_avm(ji,jj,jk+1) + p_avm(ji,jj,jk ) , 2.e-5_wp ) & ! upper diagonal
	344	& / ( p_e3t(ji,jj,jk ) * p_e3w(ji,jj,jk ) )
	345	zzd_lw = zcof * MAX( p_avm(ji,jj,jk ) + p_avm(ji,jj,jk-1) , 2.e-5_wp ) & ! lower diagonal
	346	& / ( p_e3t(ji,jj,jk-1) * p_e3w(ji,jj,jk ) )
[5656]	347	!
[1492]	348	zd_up(ji,jj,jk) = zzd_up ! Matrix (zdiag, zd_up, zd_lw)
	349	zd_lw(ji,jj,jk) = zzd_lw
[9019]	350	zdiag(ji,jj,jk) = 1._wp - zzd_lw - zzd_up + zfact2 * dissl(ji,jj,jk) * wmask(ji,jj,jk)
[1239]	351	!
[1492]	352	! ! right hand side in en
[9019]	353	en(ji,jj,jk) = en(ji,jj,jk) + rdt * ( p_sh2(ji,jj,jk) & ! shear
	354	& - p_avt(ji,jj,jk) * rn2(ji,jj,jk) & ! stratification
	355	& + zfact3 * dissl(ji,jj,jk) * en(ji,jj,jk) & ! dissipation
	356	& ) * wmask(ji,jj,jk)
[1239]	357	END DO
[5120]	358	END DO
	359	END DO
	360	! !* Matrix inversion from level 2 (tke prescribed at level 1)
	361	DO jk = 3, jpkm1 ! First recurrence : Dk = Dk - Lk * Uk-1 / Dk-1
	362	DO jj = 2, jpjm1
	363	DO ji = fs_2, fs_jpim1 ! vector opt.
[1492]	364	zdiag(ji,jj,jk) = zdiag(ji,jj,jk) - zd_lw(ji,jj,jk) * zd_up(ji,jj,jk-1) / zdiag(ji,jj,jk-1)
[1239]	365	END DO
[5120]	366	END DO
	367	END DO
[5836]	368	DO jj = 2, jpjm1 ! Second recurrence : Lk = RHSk - Lk / Dk-1 * Lk-1
[5120]	369	DO ji = fs_2, fs_jpim1 ! vector opt.
	370	zd_lw(ji,jj,2) = en(ji,jj,2) - zd_lw(ji,jj,2) * en(ji,jj,1) ! Surface boudary conditions on tke
	371	END DO
	372	END DO
	373	DO jk = 3, jpkm1
	374	DO jj = 2, jpjm1
	375	DO ji = fs_2, fs_jpim1 ! vector opt.
[1492]	376	zd_lw(ji,jj,jk) = en(ji,jj,jk) - zd_lw(ji,jj,jk) / zdiag(ji,jj,jk-1) *zd_lw(ji,jj,jk-1)
[1239]	377	END DO
[5120]	378	END DO
	379	END DO
[5836]	380	DO jj = 2, jpjm1 ! thrid recurrence : Ek = ( Lk - Uk * Ek+1 ) / Dk
[5120]	381	DO ji = fs_2, fs_jpim1 ! vector opt.
[1492]	382	en(ji,jj,jpkm1) = zd_lw(ji,jj,jpkm1) / zdiag(ji,jj,jpkm1)
[5120]	383	END DO
	384	END DO
	385	DO jk = jpk-2, 2, -1
	386	DO jj = 2, jpjm1
	387	DO ji = fs_2, fs_jpim1 ! vector opt.
[1492]	388	en(ji,jj,jk) = ( zd_lw(ji,jj,jk) - zd_up(ji,jj,jk) * en(ji,jj,jk+1) ) / zdiag(ji,jj,jk)
[1239]	389	END DO
[5120]	390	END DO
	391	END DO
	392	DO jk = 2, jpkm1 ! set the minimum value of tke
	393	DO jj = 2, jpjm1
	394	DO ji = fs_2, fs_jpim1 ! vector opt.
	395	en(ji,jj,jk) = MAX( en(ji,jj,jk), rn_emin ) * wmask(ji,jj,jk)
[1239]	396	END DO
	397	END DO
	398	END DO
[9019]	399	!
[1492]	400	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	401	! ! TKE due to surface and internal wave breaking
	402	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[6140]	403	!!gm BUG : in the exp remove the depth of ssh !!!
[9019]	404	!!gm i.e. use gde3w in argument (pdepw)
[6140]	405
	406
[2528]	407	IF( nn_etau == 1 ) THEN !* penetration below the mixed layer (rn_efr fraction)
[9546]	408	DO jk = 2, jpkm1 ! rn_eice =0 ON below sea-ice, =4 OFF when ice fraction > 0.25
[1239]	409	DO jj = 2, jpjm1
	410	DO ji = fs_2, fs_jpim1 ! vector opt.
[9019]	411	en(ji,jj,jk) = en(ji,jj,jk) + rn_efr * en(ji,jj,1) * EXP( -pdepw(ji,jj,jk) / htau(ji,jj) ) &
[9546]	412	& * MAX(0.,1._wp - rn_eice fr_i(ji,jj) ) wmask(ji,jj,jk) * tmask(ji,jj,1)
[1239]	413	END DO
	414	END DO
[1492]	415	END DO
[2528]	416	ELSEIF( nn_etau == 2 ) THEN !* act only at the base of the mixed layer (jk=nmln) (rn_efr fraction)
[1492]	417	DO jj = 2, jpjm1
	418	DO ji = fs_2, fs_jpim1 ! vector opt.
	419	jk = nmln(ji,jj)
[9019]	420	en(ji,jj,jk) = en(ji,jj,jk) + rn_efr * en(ji,jj,1) * EXP( -pdepw(ji,jj,jk) / htau(ji,jj) ) &
[9546]	421	& * MAX(0.,1._wp - rn_eice fr_i(ji,jj) ) wmask(ji,jj,jk) * tmask(ji,jj,1)
[1239]	422	END DO
[1492]	423	END DO
[2528]	424	ELSEIF( nn_etau == 3 ) THEN !* penetration belox the mixed layer (HF variability)
[1705]	425	DO jk = 2, jpkm1
	426	DO jj = 2, jpjm1
	427	DO ji = fs_2, fs_jpim1 ! vector opt.
	428	ztx2 = utau(ji-1,jj ) + utau(ji,jj)
	429	zty2 = vtau(ji ,jj-1) + vtau(ji,jj)
[4990]	430	ztau = 0.5_wp * SQRT( ztx2 * ztx2 + zty2 * zty2 ) * tmask(ji,jj,1) ! module of the mean stress
[2528]	431	zdif = taum(ji,jj) - ztau ! mean of modulus - modulus of the mean
	432	zdif = rhftau_scl * MAX( 0._wp, zdif + rhftau_add ) ! apply some modifications...
[9019]	433	en(ji,jj,jk) = en(ji,jj,jk) + zbbrau * zdif * EXP( -pdepw(ji,jj,jk) / htau(ji,jj) ) &
[9546]	434	& * MAX(0.,1._wp - rn_eice fr_i(ji,jj) ) wmask(ji,jj,jk) * tmask(ji,jj,1)
[1705]	435	END DO
	436	END DO
	437	END DO
[1239]	438	ENDIF
[1492]	439	!
[1239]	440	END SUBROUTINE tke_tke
	441
[1492]	442
[9019]	443	SUBROUTINE tke_avn( pdepw, p_e3t, p_e3w, p_avm, p_avt )
[1239]	444	!!----------------------------------------------------------------------
[1492]	445	!! * ROUTINE tke_avn *
[1239]	446	!!
[1492]	447	!! ** Purpose : Compute the vertical eddy viscosity and diffusivity
	448	!!
	449	!! ** Method : At this stage, en, the now TKE, is known (computed in
	450	!! the tke_tke routine). First, the now mixing lenth is
	451	!! computed from en and the strafification (N^2), then the mixings
	452	!! coefficients are computed.
	453	!! - Mixing length : a first evaluation of the mixing lengh
	454	!! scales is:
	455	!! mxl = sqrt(2*en) / N
	456	!! where N is the brunt-vaisala frequency, with a minimum value set
[2528]	457	!! to rmxl_min (rn_mxl0) in the interior (surface) ocean.
[1492]	458	!! The mixing and dissipative length scale are bound as follow :
	459	!! nn_mxl=0 : mxl bounded by the distance to surface and bottom.
	460	!! zmxld = zmxlm = mxl
	461	!! nn_mxl=1 : mxl bounded by the e3w and zmxld = zmxlm = mxl
	462	!! nn_mxl=2 : mxl bounded such that the vertical derivative of mxl is
	463	!! less than 1 (\|d/dz(mxl)\|<1) and zmxld = zmxlm = mxl
	464	!! nn_mxl=3 : mxl is bounded from the surface to the bottom usings
	465	!! \|d/dz(xml)\|<1 to obtain lup, and from the bottom to
	466	!! the surface to obtain ldown. the resulting length
	467	!! scales are:
	468	!! zmxld = sqrt( lup * ldown )
	469	!! zmxlm = min ( lup , ldown )
	470	!! - Vertical eddy viscosity and diffusivity:
	471	!! avm = max( avtb, rn_ediff * zmxlm * en^1/2 )
	472	!! avt = max( avmb, pdlr * avm )
	473	!! with pdlr=1 if nn_pdl=0, pdlr=1/pdl=F(Ri) otherwise.
	474	!!
[9019]	475	!! ** Action : - avt, avm : now vertical eddy diffusivity and viscosity (w-point)
[1239]	476	!!----------------------------------------------------------------------
[9019]	477	USE zdf_oce , ONLY : en, avtb, avmb, avtb_2d ! ocean vertical physics
	478	!!
	479	REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: pdepw ! depth (w-points)
	480	REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: p_e3t, p_e3w ! level thickness (t- & w-points)
	481	REAL(wp), DIMENSION(:,:,:), INTENT( out) :: p_avm, p_avt ! vertical eddy viscosity & diffusivity (w-points)
	482	!
[2715]	483	INTEGER :: ji, jj, jk ! dummy loop indices
[9019]	484	REAL(wp) :: zrn2, zraug, zcoef, zav ! local scalars
	485	REAL(wp) :: zdku, zdkv, zsqen ! - -
	486	REAL(wp) :: zemxl, zemlm, zemlp ! - -
	487	REAL(wp), DIMENSION(jpi,jpj,jpk) :: zmxlm, zmxld ! 3D workspace
[1239]	488	!!--------------------------------------------------------------------
[3294]	489	!
[1492]	490	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	491	! ! Mixing length
	492	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	493	!
	494	! !* Buoyancy length scale: l=sqrt(2e/n*2)
	495	!
[5120]	496	! initialisation of interior minimum value (avoid a 2d loop with mikt)
[7753]	497	zmxlm(:,:,:) = rmxl_min
	498	zmxld(:,:,:) = rmxl_min
[5120]	499	!
[2528]	500	IF( ln_mxl0 ) THEN ! surface mixing length = F(stress) : l=vkarmn2.e5taum/(rau0*g)
[9019]	501	zraug = vkarmn * 2.e5_wp / ( rau0 * grav )
[4990]	502	DO jj = 2, jpjm1
	503	DO ji = fs_2, fs_jpim1
[5120]	504	zmxlm(ji,jj,1) = MAX( rn_mxl0, zraug * taum(ji,jj) * tmask(ji,jj,1) )
[4990]	505	END DO
	506	END DO
	507	ELSE
[7753]	508	zmxlm(:,:,1) = rn_mxl0
[1239]	509	ENDIF
	510	!
[5120]	511	DO jk = 2, jpkm1 ! interior value : l=sqrt(2*e/n^2)
	512	DO jj = 2, jpjm1
	513	DO ji = fs_2, fs_jpim1 ! vector opt.
[1239]	514	zrn2 = MAX( rn2(ji,jj,jk), rsmall )
[5836]	515	zmxlm(ji,jj,jk) = MAX( rmxl_min, SQRT( 2._wp * en(ji,jj,jk) / zrn2 ) )
[1239]	516	END DO
	517	END DO
	518	END DO
[1492]	519	!
	520	! !* Physical limits for the mixing length
	521	!
[7753]	522	zmxld(:,:, 1 ) = zmxlm(:,:,1) ! surface set to the minimum value
	523	zmxld(:,:,jpk) = rmxl_min ! last level set to the minimum value
[1492]	524	!
[1239]	525	SELECT CASE ( nn_mxl )
	526	!
[5836]	527	!!gm Not sure of that coding for ISF....
[9019]	528	! where wmask = 0 set zmxlm == p_e3w
[1239]	529	CASE ( 0 ) ! bounded by the distance to surface and bottom
[5120]	530	DO jk = 2, jpkm1
	531	DO jj = 2, jpjm1
	532	DO ji = fs_2, fs_jpim1 ! vector opt.
[9019]	533	zemxl = MIN( pdepw(ji,jj,jk) - pdepw(ji,jj,mikt(ji,jj)), zmxlm(ji,jj,jk), &
	534	& pdepw(ji,jj,mbkt(ji,jj)+1) - pdepw(ji,jj,jk) )
[5120]	535	! wmask prevent zmxlm = 0 if jk = mikt(ji,jj)
[9019]	536	zmxlm(ji,jj,jk) = zemxl * wmask(ji,jj,jk) + MIN( zmxlm(ji,jj,jk) , p_e3w(ji,jj,jk) ) * (1 - wmask(ji,jj,jk))
	537	zmxld(ji,jj,jk) = zemxl * wmask(ji,jj,jk) + MIN( zmxlm(ji,jj,jk) , p_e3w(ji,jj,jk) ) * (1 - wmask(ji,jj,jk))
[1239]	538	END DO
	539	END DO
	540	END DO
	541	!
	542	CASE ( 1 ) ! bounded by the vertical scale factor
[5120]	543	DO jk = 2, jpkm1
	544	DO jj = 2, jpjm1
	545	DO ji = fs_2, fs_jpim1 ! vector opt.
[9019]	546	zemxl = MIN( p_e3w(ji,jj,jk), zmxlm(ji,jj,jk) )
[1239]	547	zmxlm(ji,jj,jk) = zemxl
	548	zmxld(ji,jj,jk) = zemxl
	549	END DO
	550	END DO
	551	END DO
	552	!
	553	CASE ( 2 ) ! \|dk[xml]\| bounded by e3t :
[5120]	554	DO jk = 2, jpkm1 ! from the surface to the bottom :
	555	DO jj = 2, jpjm1
	556	DO ji = fs_2, fs_jpim1 ! vector opt.
[9019]	557	zmxlm(ji,jj,jk) = MIN( zmxlm(ji,jj,jk-1) + p_e3t(ji,jj,jk-1), zmxlm(ji,jj,jk) )
[1239]	558	END DO
[5120]	559	END DO
	560	END DO
	561	DO jk = jpkm1, 2, -1 ! from the bottom to the surface :
	562	DO jj = 2, jpjm1
	563	DO ji = fs_2, fs_jpim1 ! vector opt.
[9019]	564	zemxl = MIN( zmxlm(ji,jj,jk+1) + p_e3t(ji,jj,jk+1), zmxlm(ji,jj,jk) )
[1239]	565	zmxlm(ji,jj,jk) = zemxl
	566	zmxld(ji,jj,jk) = zemxl
	567	END DO
	568	END DO
	569	END DO
	570	!
	571	CASE ( 3 ) ! lup and ldown, \|dk[xml]\| bounded by e3t :
[5120]	572	DO jk = 2, jpkm1 ! from the surface to the bottom : lup
	573	DO jj = 2, jpjm1
	574	DO ji = fs_2, fs_jpim1 ! vector opt.
[9019]	575	zmxld(ji,jj,jk) = MIN( zmxld(ji,jj,jk-1) + p_e3t(ji,jj,jk-1), zmxlm(ji,jj,jk) )
[1239]	576	END DO
[5120]	577	END DO
	578	END DO
	579	DO jk = jpkm1, 2, -1 ! from the bottom to the surface : ldown
	580	DO jj = 2, jpjm1
	581	DO ji = fs_2, fs_jpim1 ! vector opt.
[9019]	582	zmxlm(ji,jj,jk) = MIN( zmxlm(ji,jj,jk+1) + p_e3t(ji,jj,jk+1), zmxlm(ji,jj,jk) )
[1239]	583	END DO
	584	END DO
	585	END DO
	586	DO jk = 2, jpkm1
	587	DO jj = 2, jpjm1
	588	DO ji = fs_2, fs_jpim1 ! vector opt.
	589	zemlm = MIN ( zmxld(ji,jj,jk), zmxlm(ji,jj,jk) )
	590	zemlp = SQRT( zmxld(ji,jj,jk) * zmxlm(ji,jj,jk) )
	591	zmxlm(ji,jj,jk) = zemlm
	592	zmxld(ji,jj,jk) = zemlp
	593	END DO
	594	END DO
	595	END DO
	596	!
	597	END SELECT
[1492]	598	!
	599	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[9019]	600	! ! Vertical eddy viscosity and diffusivity (avm and avt)
[1492]	601	! !<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
	602	DO jk = 1, jpkm1 !* vertical eddy viscosity & diffivity at w-points
[1239]	603	DO jj = 2, jpjm1
	604	DO ji = fs_2, fs_jpim1 ! vector opt.
	605	zsqen = SQRT( en(ji,jj,jk) )
	606	zav = rn_ediff * zmxlm(ji,jj,jk) * zsqen
[9019]	607	p_avm(ji,jj,jk) = MAX( zav, avmb(jk) ) * wmask(ji,jj,jk)
	608	p_avt(ji,jj,jk) = MAX( zav, avtb_2d(ji,jj) * avtb(jk) ) * wmask(ji,jj,jk)
[1239]	609	dissl(ji,jj,jk) = zsqen / zmxld(ji,jj,jk)
	610	END DO
	611	END DO
	612	END DO
[1492]	613	!
	614	!
	615	IF( nn_pdl == 1 ) THEN !* Prandtl number case: update avt
[5120]	616	DO jk = 2, jpkm1
	617	DO jj = 2, jpjm1
	618	DO ji = fs_2, fs_jpim1 ! vector opt.
[9019]	619	p_avt(ji,jj,jk) = MAX( apdlr(ji,jj,jk) * p_avt(ji,jj,jk), avtb_2d(ji,jj) * avtb(jk) ) * tmask(ji,jj,jk)
[1239]	620	END DO
	621	END DO
	622	END DO
	623	ENDIF
[9019]	624	!
[11872]	625	IF(sn_cfctl%l_prtctl) THEN
[9440]	626	CALL prt_ctl( tab3d_1=en , clinfo1=' tke - e: ', tab3d_2=p_avt, clinfo2=' t: ', kdim=jpk)
	627	CALL prt_ctl( tab3d_1=p_avm, clinfo1=' tke - m: ', kdim=jpk )
[1239]	628	ENDIF
	629	!
[1492]	630	END SUBROUTINE tke_avn
[1239]	631
[1492]	632
[2528]	633	SUBROUTINE zdf_tke_init
[1239]	634	!!----------------------------------------------------------------------
[2528]	635	!! * ROUTINE zdf_tke_init *
[1239]	636	!!
	637	!! ** Purpose : Initialization of the vertical eddy diffivity and
[1492]	638	!! viscosity when using a tke turbulent closure scheme
[1239]	639	!!
[1601]	640	!! ** Method : Read the namzdf_tke namelist and check the parameters
[1492]	641	!! called at the first timestep (nit000)
[1239]	642	!!
[1601]	643	!! ** input : Namlist namzdf_tke
[1239]	644	!!
	645	!! ** Action : Increase by 1 the nstop flag is setting problem encounter
	646	!!----------------------------------------------------------------------
[9019]	647	USE zdf_oce , ONLY : ln_zdfiwm ! Internal Wave Mixing flag
	648	!!
[1239]	649	INTEGER :: ji, jj, jk ! dummy loop indices
[4147]	650	INTEGER :: ios
[1239]	651	!!
[9019]	652	NAMELIST/namzdf_tke/ rn_ediff, rn_ediss , rn_ebb , rn_emin , &
	653	& rn_emin0, rn_bshear, nn_mxl , ln_mxl0 , &
	654	& rn_mxl0 , nn_pdl , ln_drg , ln_lc , rn_lc, &
[9558]	655	& nn_etau , nn_htau , rn_efr , rn_eice
[1239]	656	!!----------------------------------------------------------------------
[2715]	657	!
[4147]	658	REWIND( numnam_ref ) ! Namelist namzdf_tke in reference namelist : Turbulent Kinetic Energy
	659	READ ( numnam_ref, namzdf_tke, IOSTAT = ios, ERR = 901)
[11536]	660	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namzdf_tke in reference namelist' )
[4147]	661
	662	REWIND( numnam_cfg ) ! Namelist namzdf_tke in configuration namelist : Turbulent Kinetic Energy
	663	READ ( numnam_cfg, namzdf_tke, IOSTAT = ios, ERR = 902 )
[11536]	664	902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namzdf_tke in configuration namelist' )
[4624]	665	IF(lwm) WRITE ( numond, namzdf_tke )
[2715]	666	!
[2528]	667	ri_cri = 2._wp / ( 2._wp + rn_ediss / rn_ediff ) ! resulting critical Richardson number
[2715]	668	!
[1492]	669	IF(lwp) THEN !* Control print
[1239]	670	WRITE(numout,*)
[2528]	671	WRITE(numout,*) 'zdf_tke_init : tke turbulent closure scheme - initialisation'
	672	WRITE(numout,*) '~~~~~~~~~~~~'
[1601]	673	WRITE(numout,*) ' Namelist namzdf_tke : set tke mixing parameters'
[1705]	674	WRITE(numout,*) ' coef. to compute avt rn_ediff = ', rn_ediff
	675	WRITE(numout,*) ' Kolmogoroff dissipation coef. rn_ediss = ', rn_ediss
	676	WRITE(numout,*) ' tke surface input coef. rn_ebb = ', rn_ebb
	677	WRITE(numout,*) ' minimum value of tke rn_emin = ', rn_emin
	678	WRITE(numout,*) ' surface minimum value of tke rn_emin0 = ', rn_emin0
[9019]	679	WRITE(numout,*) ' prandl number flag nn_pdl = ', nn_pdl
[1705]	680	WRITE(numout,*) ' background shear (>0) rn_bshear = ', rn_bshear
	681	WRITE(numout,*) ' mixing length type nn_mxl = ', nn_mxl
[9019]	682	WRITE(numout,*) ' surface mixing length = F(stress) or not ln_mxl0 = ', ln_mxl0
	683	WRITE(numout,*) ' surface mixing length minimum value rn_mxl0 = ', rn_mxl0
	684	WRITE(numout,*) ' top/bottom friction forcing flag ln_drg = ', ln_drg
	685	WRITE(numout,*) ' Langmuir cells parametrization ln_lc = ', ln_lc
	686	WRITE(numout,*) ' coef to compute vertical velocity of LC rn_lc = ', rn_lc
[1705]	687	WRITE(numout,*) ' test param. to add tke induced by wind nn_etau = ', nn_etau
[9019]	688	WRITE(numout,*) ' type of tke penetration profile nn_htau = ', nn_htau
	689	WRITE(numout,*) ' fraction of TKE that penetrates rn_efr = ', rn_efr
[9546]	690	WRITE(numout,*) ' below sea-ice: =0 ON rn_eice = ', rn_eice
	691	WRITE(numout,*) ' =4 OFF when ice fraction > 1/4 '
[9019]	692	IF( ln_drg ) THEN
[9169]	693	WRITE(numout,*)
[9019]	694	WRITE(numout,*) ' Namelist namdrg_top/_bot: used values:'
	695	WRITE(numout,*) ' top ocean cavity roughness (m) rn_z0(_top)= ', r_z0_top
	696	WRITE(numout,*) ' Bottom seafloor roughness (m) rn_z0(_bot)= ', r_z0_bot
	697	ENDIF
	698	WRITE(numout,*)
[9190]	699	WRITE(numout,*) ' ==>>> critical Richardson nb with your parameters ri_cri = ', ri_cri
[9019]	700	WRITE(numout,*)
[1239]	701	ENDIF
[2715]	702	!
[9019]	703	IF( ln_zdfiwm ) THEN ! Internal wave-driven mixing
	704	rn_emin = 1.e-10_wp ! specific values of rn_emin & rmxl_min are used
	705	rmxl_min = 1.e-03_wp ! associated avt minimum = molecular salt diffusivity (10^-9 m2/s)
[9190]	706	IF(lwp) WRITE(numout,*) ' ==>>> Internal wave-driven mixing case: force rn_emin = 1.e-10 and rmxl_min = 1.e-3'
[9019]	707	ELSE ! standard case : associated avt minimum = molecular viscosity (10^-6 m2/s)
	708	rmxl_min = 1.e-6_wp / ( rn_ediff * SQRT( rn_emin ) ) ! resulting minimum length to recover molecular viscosity
[9190]	709	IF(lwp) WRITE(numout,*) ' ==>>> minimum mixing length with your parameters rmxl_min = ', rmxl_min
[9019]	710	ENDIF
	711	!
[2715]	712	! ! allocate tke arrays
	713	IF( zdf_tke_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'zdf_tke_init : unable to allocate arrays' )
	714	!
[1492]	715	! !* Check of some namelist values
[4990]	716	IF( nn_mxl < 0 .OR. nn_mxl > 3 ) CALL ctl_stop( 'bad flag: nn_mxl is 0, 1 or 2 ' )
	717	IF( nn_pdl < 0 .OR. nn_pdl > 1 ) CALL ctl_stop( 'bad flag: nn_pdl is 0 or 1 ' )
	718	IF( nn_htau < 0 .OR. nn_htau > 1 ) CALL ctl_stop( 'bad flag: nn_htau is 0, 1 or 2 ' )
[5407]	719	IF( nn_etau == 3 .AND. .NOT. ln_cpl ) CALL ctl_stop( 'nn_etau == 3 : HF taum only known in coupled mode' )
[9019]	720	!
[2528]	721	IF( ln_mxl0 ) THEN
[9169]	722	IF(lwp) WRITE(numout,*)
[9190]	723	IF(lwp) WRITE(numout,*) ' ==>>> use a surface mixing length = F(stress) : set rn_mxl0 = rmxl_min'
[2528]	724	rn_mxl0 = rmxl_min
	725	ENDIF
	726
[1492]	727	IF( nn_etau == 2 ) CALL zdf_mxl( nit000 ) ! Initialization of nmln
[1239]	728
[1492]	729	! !* depth of penetration of surface tke
	730	IF( nn_etau /= 0 ) THEN
[1601]	731	SELECT CASE( nn_htau ) ! Choice of the depth of penetration
[2528]	732	CASE( 0 ) ! constant depth penetration (here 10 meters)
[7753]	733	htau(:,:) = 10._wp
[2528]	734	CASE( 1 ) ! F(latitude) : 0.5m to 30m poleward of 40 degrees
[7753]	735	htau(:,:) = MAX( 0.5_wp, MIN( 30._wp, 45._wp* ABS( SIN( rpi/180._wp * gphit(:,:) ) ) ) )
[1492]	736	END SELECT
	737	ENDIF
[9019]	738	! !* read or initialize all required files
	739	CALL tke_rst( nit000, 'READ' ) ! (en, avt_k, avm_k, dissl)
[1239]	740	!
[9367]	741	IF( lwxios ) THEN
	742	CALL iom_set_rstw_var_active('en')
	743	CALL iom_set_rstw_var_active('avt_k')
	744	CALL iom_set_rstw_var_active('avm_k')
	745	CALL iom_set_rstw_var_active('dissl')
	746	ENDIF
[2528]	747	END SUBROUTINE zdf_tke_init
[1239]	748
	749
[1531]	750	SUBROUTINE tke_rst( kt, cdrw )
[9019]	751	!!---------------------------------------------------------------------
	752	!! * ROUTINE tke_rst *
	753	!!
	754	!! ** Purpose : Read or write TKE file (en) in restart file
	755	!!
	756	!! ** Method : use of IOM library
	757	!! if the restart does not contain TKE, en is either
	758	!! set to rn_emin or recomputed
	759	!!----------------------------------------------------------------------
	760	USE zdf_oce , ONLY : en, avt_k, avm_k ! ocean vertical physics
	761	!!
	762	INTEGER , INTENT(in) :: kt ! ocean time-step
	763	CHARACTER(len=*), INTENT(in) :: cdrw ! "READ"/"WRITE" flag
	764	!
	765	INTEGER :: jit, jk ! dummy loop indices
	766	INTEGER :: id1, id2, id3, id4 ! local integers
	767	!!----------------------------------------------------------------------
	768	!
	769	IF( TRIM(cdrw) == 'READ' ) THEN ! Read/initialise
	770	! ! ---------------
	771	IF( ln_rstart ) THEN !* Read the restart file
	772	id1 = iom_varid( numror, 'en' , ldstop = .FALSE. )
	773	id2 = iom_varid( numror, 'avt_k', ldstop = .FALSE. )
	774	id3 = iom_varid( numror, 'avm_k', ldstop = .FALSE. )
	775	id4 = iom_varid( numror, 'dissl', ldstop = .FALSE. )
	776	!
	777	IF( MIN( id1, id2, id3, id4 ) > 0 ) THEN ! fields exist
[9367]	778	CALL iom_get( numror, jpdom_autoglo, 'en' , en , ldxios = lrxios )
	779	CALL iom_get( numror, jpdom_autoglo, 'avt_k', avt_k, ldxios = lrxios )
	780	CALL iom_get( numror, jpdom_autoglo, 'avm_k', avm_k, ldxios = lrxios )
	781	CALL iom_get( numror, jpdom_autoglo, 'dissl', dissl, ldxios = lrxios )
[9019]	782	ELSE ! start TKE from rest
[9169]	783	IF(lwp) WRITE(numout,*)
[9190]	784	IF(lwp) WRITE(numout,*) ' ==>>> previous run without TKE scheme, set en to background values'
[9019]	785	en (:,:,:) = rn_emin * wmask(:,:,:)
	786	dissl(:,:,:) = 1.e-12_wp
	787	! avt_k, avm_k already set to the background value in zdf_phy_init
	788	ENDIF
	789	ELSE !* Start from rest
[9169]	790	IF(lwp) WRITE(numout,*)
[9190]	791	IF(lwp) WRITE(numout,*) ' ==>>> start from rest: set en to the background value'
[9019]	792	en (:,:,:) = rn_emin * wmask(:,:,:)
	793	dissl(:,:,:) = 1.e-12_wp
	794	! avt_k, avm_k already set to the background value in zdf_phy_init
	795	ENDIF
	796	!
	797	ELSEIF( TRIM(cdrw) == 'WRITE' ) THEN ! Create restart file
	798	! ! -------------------
[9169]	799	IF(lwp) WRITE(numout,*) '---- tke_rst ----'
[9367]	800	IF( lwxios ) CALL iom_swap( cwxios_context )
	801	CALL iom_rstput( kt, nitrst, numrow, 'en' , en , ldxios = lwxios )
	802	CALL iom_rstput( kt, nitrst, numrow, 'avt_k', avt_k, ldxios = lwxios )
	803	CALL iom_rstput( kt, nitrst, numrow, 'avm_k', avm_k, ldxios = lwxios )
	804	CALL iom_rstput( kt, nitrst, numrow, 'dissl', dissl, ldxios = lwxios )
	805	IF( lwxios ) CALL iom_swap( cxios_context )
[9019]	806	!
	807	ENDIF
	808	!
[1531]	809	END SUBROUTINE tke_rst
[1239]	810
	811	!!======================================================================
[1531]	812	END MODULE zdftke

Note: See TracBrowser for help on using the repository browser.

New URL for NEMO forge! http://forge.nemo-ocean.eu

Context Navigation

source: NEMO/branches/2019/fix_sn_cfctl_ticket2328/src/OCE/ZDF/zdftke.F90 @ 11872

Download in other formats: