| 1 | MODULE trcsms_age |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE trcsms_age *** |
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| 4 | !! TOP : Main module of the AGE tracers |
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| 5 | !!====================================================================== |
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| 6 | !! History : 2.0 ! 2007-12 (C. Ethe, G. Madec) Original code |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! trc_sms_age : AGE model main routine |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | USE oce_trc ! Ocean variables |
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| 11 | USE trc ! TOP variables |
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| 12 | USE trd_oce |
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| 13 | USE trdtrc |
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| 14 | |
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| 15 | IMPLICIT NONE |
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| 16 | PRIVATE |
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| 17 | |
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| 18 | PUBLIC trc_sms_age ! called by trcsms.F90 module |
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| 19 | |
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| 20 | INTEGER , PUBLIC :: nl_age ! T level surrounding age_depth |
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| 21 | INTEGER , PUBLIC :: nla_age ! T level wholly above age_depth |
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| 22 | INTEGER , PUBLIC :: nlb_age ! T level wholly below age_depth |
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| 23 | |
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| 24 | REAL(wp), PUBLIC :: rn_age_depth ! = 10 depth over which age tracer reset to zero |
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| 25 | REAL(wp), PUBLIC :: rn_age_kill_rate ! = -1./7200 recip of relaxation timescale (s) for age tracer shallower than age_depth |
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| 26 | |
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| 27 | REAL(wp), PUBLIC :: rryear !: recip number of seconds in one year |
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| 28 | REAL(wp), PUBLIC :: frac_kill_age !: fraction of level nl_age above age_depth where it is relaxed towards zero |
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| 29 | REAL(wp), PUBLIC :: frac_add_age !: fraction of level nl_age below age_depth where it is incremented |
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| 30 | |
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| 31 | |
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| 32 | !!---------------------------------------------------------------------- |
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| 33 | !! NEMO/TOP 4.0 , NEMO Consortium (2018) |
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| 34 | !! $Id$ |
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| 35 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 36 | !!---------------------------------------------------------------------- |
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| 37 | CONTAINS |
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| 38 | |
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| 39 | SUBROUTINE trc_sms_age( kt, Kbb, Kmm, Krhs ) |
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| 40 | !!---------------------------------------------------------------------- |
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| 41 | !! *** trc_sms_age *** |
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| 42 | !! |
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| 43 | !! ** Purpose : main routine of AGE model |
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| 44 | !! |
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| 45 | !! ** Method : - |
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| 46 | !!---------------------------------------------------------------------- |
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| 47 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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| 48 | INTEGER, INTENT(in) :: Kbb, Kmm, Krhs ! ocean time level |
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| 49 | INTEGER :: jn, jk ! dummy loop index |
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| 50 | !!---------------------------------------------------------------------- |
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| 51 | ! |
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| 52 | IF( ln_timing ) CALL timing_start('trc_sms_age') |
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| 53 | ! |
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| 54 | IF(lwp) WRITE(numout,*) |
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| 55 | IF(lwp) WRITE(numout,*) ' trc_sms_age: AGE model' |
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| 56 | IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~~~~' |
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| 57 | |
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| 58 | IF( l_1st_euler .OR. ln_top_euler ) THEN |
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| 59 | tr(:,:,:,jp_age,Kbb) = tr(:,:,:,jp_age,Kmm) |
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| 60 | ENDIF |
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| 61 | |
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| 62 | |
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| 63 | DO jk = 1, nla_age |
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| 64 | tr(:,:,jk,jp_age,Krhs) = rn_age_kill_rate * tr(:,:,jk,jp_age,Kbb) |
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| 65 | END DO |
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| 66 | ! |
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| 67 | tr(:,:,nl_age,jp_age,Krhs) = frac_kill_age * rn_age_kill_rate * tr(:,:,nl_age,jp_age,Kbb) & |
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| 68 | & + frac_add_age * rryear * tmask(:,:,nl_age) |
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| 69 | ! |
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| 70 | DO jk = nlb_age, jpk |
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| 71 | tr(:,:,jk,jp_age,Krhs) = tmask(:,:,jk) * rryear |
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| 72 | END DO |
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| 73 | ! |
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| 74 | IF( l_trdtrc ) CALL trd_trc( tr(:,:,:,jp_age,Krhs), jn, jptra_sms, kt, Kmm ) ! save trends |
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| 75 | ! |
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| 76 | IF( ln_timing ) CALL timing_stop('trc_sms_age') |
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| 77 | ! |
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| 78 | END SUBROUTINE trc_sms_age |
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| 79 | |
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| 80 | !!====================================================================== |
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| 81 | END MODULE trcsms_age |
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