| 1 | MODULE trcstp |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE trcstp *** |
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| 4 | !! Time-stepping : time loop of opa for passive tracer |
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| 5 | !!====================================================================== |
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| 6 | #if defined key_passivetrc |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! trc_stp : passive tracer system time-stepping |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! * Modules used |
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| 11 | USE oce_trc ! ocean dynamics and active tracers variables |
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| 12 | USE trc ! ocean passive tracers variables |
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| 13 | USE trctrp ! passive tracers transport |
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| 14 | USE trcsms ! passive tracers sources and sinks |
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| 15 | |
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| 16 | IMPLICIT NONE |
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| 17 | PRIVATE |
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| 18 | |
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| 19 | !! * Routine accessibility |
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| 20 | PUBLIC trc_stp ! called by step |
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| 21 | !!---------------------------------------------------------------------- |
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| 22 | !! OPA 9.0 , LODYC-IPSL (2003) |
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| 23 | !!---------------------------------------------------------------------- |
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| 24 | |
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| 25 | CONTAINS |
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| 26 | |
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| 27 | SUBROUTINE trc_stp( kt ) |
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| 28 | !!------------------------------------------------------------------- |
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| 29 | !! *** ROUTINE trc_stp *** |
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| 30 | !! |
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| 31 | !! ** Purpose : Time loop of opa for passive tracer |
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| 32 | !! |
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| 33 | !! ** Method : |
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| 34 | !! Compute the passive tracers trends |
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| 35 | !! Update the passive tracers |
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| 36 | !! |
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| 37 | !! History : |
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| 38 | !! 9.0 ! 04-03 (C. Ethe) Original |
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| 39 | !!------------------------------------------------------------------- |
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| 40 | !! * Arguments |
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| 41 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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| 42 | INTEGER :: jn |
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| 43 | REAL(wp) :: ztra |
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| 44 | |
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| 45 | |
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| 46 | ! this ROUTINE is called only every ndttrc time step |
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| 47 | IF( MOD( kt , ndttrc ) /= 0 ) RETURN |
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| 48 | |
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| 49 | ! tracers: sink and source |
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| 50 | |
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| 51 | |
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| 52 | CALL trc_sms( kt ) |
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| 53 | |
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| 54 | DO jn = 1, jptra |
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| 55 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 56 | ztra = SUM( tra(2:nictle,2:njctle,1:jpkm1,jn) * tmask(2:nictle,2:njctle,1:jpkm1) ) |
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| 57 | WRITE(numout,*) ' trc/sms - ',ctrcnm(jn),' : ', ztra-tra_ctl(jn) |
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| 58 | tra_ctl(jn) = ztra |
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| 59 | ENDIF |
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| 60 | END DO |
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| 61 | |
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| 62 | |
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| 63 | |
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| 64 | ! transport of passive tracers |
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| 65 | |
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| 66 | CALL trc_trp( kt ) |
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| 67 | |
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| 68 | DO jn = 1, jptra |
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| 69 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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| 70 | ztra = SUM( tra(2:nictle,2:njctle,1:jpkm1,jn) * tmask(2:nictle,2:njctle,1:jpkm1) ) |
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| 71 | WRITE(numout,*) ' trc/trp - ',ctrcnm(jn),' : ', ztra-tra_ctl(jn) |
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| 72 | tra_ctl(jn) = ztra |
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| 73 | ENDIF |
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| 74 | END DO |
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| 75 | |
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| 76 | |
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| 77 | |
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| 78 | END SUBROUTINE trc_stp |
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| 79 | |
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| 80 | #else |
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| 81 | !!---------------------------------------------------------------------- |
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| 82 | !! Default key NO passive tracers |
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| 83 | !!---------------------------------------------------------------------- |
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| 84 | CONTAINS |
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| 85 | SUBROUTINE trc_stp( kt ) ! Empty routine |
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| 86 | INTEGER, INTENT(in) :: kt |
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| 87 | WRITE(*,*) 'trc_stp: You should not have seen this print! error?', kt |
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| 88 | END SUBROUTINE trc_stp |
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| 89 | #endif |
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| 90 | |
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| 91 | !!====================================================================== |
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| 92 | END MODULE trcstp |
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