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p4zlys.F90 in branches/2011/dev_NEMO_MERGE_2011/NEMOGCM/NEMO/TOP_SRC/PISCES – NEMO

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source: branches/2011/dev_NEMO_MERGE_2011/NEMOGCM/NEMO/TOP_SRC/PISCES/p4zlys.F90 @ 3160

Last change on this file since 3160 was 3160, checked in by cetlod, 12 years ago
Add timing in TOP routines
Property svn:keywords set to `Id`
File size: 9.4 KB

Rev	Line
[935]	1	MODULE p4zlys
	2	!!======================================================================
	3	!! * MODULE p4zlys *
	4	!! TOP : PISCES
	5	!!======================================================================
	6	!! History : - ! 1988-07 (E. MAIER-REIMER) Original code
	7	!! - ! 1998 (O. Aumont) additions
	8	!! - ! 1999 (C. Le Quere) modifications
	9	!! 1.0 ! 2004 (O. Aumont) modifications
	10	!! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90
[2977]	11	!! ! 2011-02 (J. Simeon, J. Orr) Calcon salinity dependence
	12	!! 3.4 ! 2011-06 (O. Aumont, C. Ethe) Improvment of calcite dissolution
[935]	13	!!----------------------------------------------------------------------
	14	#if defined key_pisces
	15	!!----------------------------------------------------------------------
	16	!! 'key_pisces' PISCES bio-model
	17	!!----------------------------------------------------------------------
	18	!! p4z_lys : Compute the CaCO3 dissolution
	19	!! p4z_lys_init : Read the namelist parameters
	20	!!----------------------------------------------------------------------
[2977]	21	USE oce_trc ! shared variables between ocean and passive tracers
	22	USE trc ! passive tracers common variables
	23	USE sms_pisces ! PISCES Source Minus Sink variables
	24	USE prtctl_trc ! print control for debugging
	25	USE iom ! I/O manager
[935]	26
	27	IMPLICIT NONE
	28	PRIVATE
	29
[2528]	30	PUBLIC p4z_lys ! called in trcsms_pisces.F90
	31	PUBLIC p4z_lys_init ! called in trcsms_pisces.F90
[935]	32
	33	!! * Shared module variables
[2715]	34	REAL(wp), PUBLIC :: kdca = 0.327e3_wp !: diss. rate constant calcite
	35	REAL(wp), PUBLIC :: nca = 1.0_wp !: order of reaction for calcite dissolution
[935]	36
	37	!! * Module variables
[2715]	38	REAL(wp) :: calcon = 1.03E-2 !: mean calcite concentration [Ca2+] in sea water [mole/kg solution]
	39
	40	INTEGER :: rmtss !: number of seconds per month
[935]	41
	42	!!----------------------------------------------------------------------
[2528]	43	!! NEMO/TOP 3.3 , NEMO Consortium (2010)
[1152]	44	!! $Id$
[2528]	45	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[935]	46	!!----------------------------------------------------------------------
	47
	48	CONTAINS
	49
	50	SUBROUTINE p4z_lys( kt )
	51	!!---------------------------------------------------------------------
	52	!! * ROUTINE p4z_lys *
	53	!!
	54	!! ** Purpose : CALCULATES DEGREE OF CACO3 SATURATION IN THE WATER
	55	!! COLUMN, DISSOLUTION/PRECIPITATION OF CACO3 AND LOSS
	56	!! OF CACO3 TO THE CACO3 SEDIMENT POOL.
	57	!!
	58	!! ** Method : - ???
	59	!!---------------------------------------------------------------------
[2715]	60	!
[935]	61	INTEGER, INTENT(in) :: kt ! ocean time step
	62	INTEGER :: ji, jj, jk, jn
[2977]	63	REAL(wp) :: zalk, zdic, zph, zremco3, zah2
	64	REAL(wp) :: zdispot, zfact, zcalcon, zalka, zaldi
[935]	65	REAL(wp) :: zomegaca, zexcess, zexcess0
[1678]	66	REAL(wp) :: zrfact2
[935]	67	CHARACTER (len=25) :: charout
[3147]	68	REAL(wp), POINTER, DIMENSION(:,:,:) :: zco3, zcaldiss
[935]	69	!!---------------------------------------------------------------------
[3147]	70	!
[3160]	71	IF( nn_timing == 1 ) CALL timing_start('p4z_lys')
	72	!
[3147]	73	CALL wrk_alloc( jpi, jpj, jpk, zco3, zcaldiss )
	74	!
[2977]	75	zco3 (:,:,:) = 0.
[1678]	76	zcaldiss(:,:,:) = 0.
[935]	77	! -------------------------------------------
	78	! COMPUTE [CO3--] and [H+] CONCENTRATIONS
	79	! -------------------------------------------
	80
	81	DO jn = 1, 5 ! BEGIN OF ITERATION
	82	!
	83	!CDIR NOVERRCHK
	84	DO jk = 1, jpkm1
	85	!CDIR NOVERRCHK
	86	DO jj = 1, jpj
	87	!CDIR NOVERRCHK
	88	DO ji = 1, jpi
[2977]	89	zfact = rhop(ji,jj,jk) / 1000. + rtrn
	90	zph = hi(ji,jj,jk) * tmask(ji,jj,jk) / zfact + ( 1.-tmask(ji,jj,jk) ) * 1.e-9 ! [H+]
[935]	91	zdic = trn(ji,jj,jk,jpdic) / zfact
	92	zalka = trn(ji,jj,jk,jptal) / zfact
	93	! CALCULATE [ALK]([CO3--], [HCO3-])
[2977]	94	zalk = zalka - ( akw3(ji,jj,jk) / zph - zph + borat(ji,jj,jk) / ( 1. + zph / akb3(ji,jj,jk) ) )
[935]	95	! CALCULATE [H+] and [CO3--]
[2977]	96	zaldi = zdic - zalk
	97	zah2 = SQRT( zaldi * zaldi + 4.* ( zalk * ak23(ji,jj,jk) / ak13(ji,jj,jk) ) * ( zdic + zaldi ) )
	98	zah2 = 0.5 * ak13(ji,jj,jk) / zalk * ( zaldi + zah2 )
	99	!
	100	zco3(ji,jj,jk) = zalk / ( 2. + zah2 / ak23(ji,jj,jk) ) * zfact
	101	hi(ji,jj,jk) = zah2 * zfact
[935]	102	END DO
	103	END DO
	104	END DO
	105	!
	106	END DO
	107
	108	! ---------------------------------------------------------
	109	! CALCULATE DEGREE OF CACO3 SATURATION AND CORRESPONDING
	110	! DISSOLOUTION AND PRECIPITATION OF CACO3 (BE AWARE OF
	111	! MGCO3)
	112	! ---------------------------------------------------------
	113
	114	DO jk = 1, jpkm1
	115	DO jj = 1, jpj
	116	DO ji = 1, jpi
	117
	118	! DEVIATION OF [CO3--] FROM SATURATION VALUE
[2977]	119	! Salinity dependance in zomegaca and divide by rhop/1000 to have good units
	120	zcalcon = calcon * ( tsn(ji,jj,jk,jp_sal) / 35._wp )
	121	zfact = rhop(ji,jj,jk) / 1000._wp
	122	zomegaca = ( zcalcon * zco3(ji,jj,jk) * zfact ) / aksp(ji,jj,jk)
[935]	123
	124	! SET DEGREE OF UNDER-/SUPERSATURATION
[2977]	125	excess(ji,jj,jk) = 1._wp - zomegaca
	126	zexcess0 = MAX( 0., excess(ji,jj,jk) )
[935]	127	zexcess = zexcess0**nca
	128
	129	! AMOUNT CACO3 (12C) THAT RE-ENTERS SOLUTION
	130	! (ACCORDING TO THIS FORMULATION ALSO SOME PARTICULATE
	131	! CACO3 GETS DISSOLVED EVEN IN THE CASE OF OVERSATURATION)
[2977]	132	zdispot = kdca * zexcess * trn(ji,jj,jk,jpcal)
[2528]	133	# if defined key_degrad
[2977]	134	zdispot = zdispot * facvol(ji,jj,jk)
[935]	135	# endif
	136	! CHANGE OF [CO3--] , [ALK], PARTICULATE [CACO3],
	137	! AND [SUM(CO2)] DUE TO CACO3 DISSOLUTION/PRECIPITATION
[2977]	138	zcaldiss(ji,jj,jk) = zdispot / rmtss ! calcite dissolution
	139	zco3(ji,jj,jk) = zco3(ji,jj,jk) + zcaldiss(ji,jj,jk) * rfact
	140	!
	141	tra(ji,jj,jk,jptal) = tra(ji,jj,jk,jptal) + 2. * zcaldiss(ji,jj,jk)
	142	tra(ji,jj,jk,jpcal) = tra(ji,jj,jk,jpcal) - zcaldiss(ji,jj,jk)
	143	tra(ji,jj,jk,jpdic) = tra(ji,jj,jk,jpdic) + zcaldiss(ji,jj,jk)
[935]	144	END DO
	145	END DO
	146	END DO
	147	!
[2977]	148	IF( ln_diatrc ) THEN
	149	!
	150	IF( lk_iomput ) THEN
	151	zrfact2 = 1.e3 * rfact2r
	152	CALL iom_put( "PH" , hi (:,:,:) * tmask(:,:,:) )
	153	CALL iom_put( "CO3" , zco3 (:,:,:) * tmask(:,:,:) )
	154	CALL iom_put( "CO3sat", aksp (:,:,:) / calcon * tmask(:,:,:) )
	155	CALL iom_put( "DCAL" , zcaldiss(:,:,:) * zrfact2 * tmask(:,:,:) )
	156	ELSE
	157	trc3d(:,:,:,jp_pcs0_3d ) = hi (:,:,:) * tmask(:,:,:)
	158	trc3d(:,:,:,jp_pcs0_3d + 1) = zco3(:,:,:) * tmask(:,:,:)
	159	trc3d(:,:,:,jp_pcs0_3d + 2) = aksp(:,:,:) / calcon * tmask(:,:,:)
	160	ENDIF
	161	!
	162	ENDIF
	163	!
[3147]	164	IF(ln_ctl) THEN ! print mean trends (used for debugging)
	165	WRITE(charout, FMT="('lys ')")
	166	CALL prt_ctl_trc_info(charout)
	167	CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm)
	168	ENDIF
[2715]	169	!
[3147]	170	CALL wrk_dealloc( jpi, jpj, jpk, zco3, zcaldiss )
	171	!
[3160]	172	IF( nn_timing == 1 ) CALL timing_stop('p4z_lys')
	173	!
[935]	174	END SUBROUTINE p4z_lys
	175
	176	SUBROUTINE p4z_lys_init
	177
	178	!!----------------------------------------------------------------------
	179	!! * ROUTINE p4z_lys_init *
	180	!!
	181	!! ** Purpose : Initialization of CaCO3 dissolution parameters
	182	!!
[1119]	183	!! ** Method : Read the nampiscal namelist and check the parameters
[3124]	184	!! called at the first timestep (nittrc000)
[935]	185	!!
[1119]	186	!! ** input : Namelist nampiscal
[935]	187	!!
	188	!!----------------------------------------------------------------------
	189
[1119]	190	NAMELIST/nampiscal/ kdca, nca
[935]	191
[2977]	192	REWIND( numnatp ) ! read numnatp
	193	READ ( numnatp, nampiscal )
[935]	194
	195	IF(lwp) THEN ! control print
	196	WRITE(numout,*) ' '
[1119]	197	WRITE(numout,*) ' Namelist parameters for CaCO3 dissolution, nampiscal'
[935]	198	WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'
	199	WRITE(numout,*) ' diss. rate constant calcite (per month) kdca =', kdca
	200	WRITE(numout,*) ' order of reaction for calcite dissolution nca =', nca
	201	ENDIF
	202
[1735]	203	! Number of seconds per month
	204	rmtss = nyear_len(1) * rday / raamo
	205
[935]	206	END SUBROUTINE p4z_lys_init
	207
	208	#else
	209	!!======================================================================
	210	!! Dummy module : No PISCES bio-model
	211	!!======================================================================
	212	CONTAINS
	213	SUBROUTINE p4z_lys( kt ) ! Empty routine
	214	INTEGER, INTENT( in ) :: kt
	215	WRITE(,) 'p4z_lys: You should not have seen this print! error?', kt
	216	END SUBROUTINE p4z_lys
	217	#endif
	218	!!======================================================================
	219	END MODULE p4zlys

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