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 | #if defined key_age |
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9 | !!---------------------------------------------------------------------- |
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10 | !! 'key_age' AGE tracer |
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11 | !!---------------------------------------------------------------------- |
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12 | !! trc_sms_age : AGE model main routine |
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13 | !!---------------------------------------------------------------------- |
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14 | USE oce_trc ! Ocean variables |
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15 | USE trc ! TOP variables |
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16 | USE trd_oce |
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17 | USE trdtrc |
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18 | |
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19 | IMPLICIT NONE |
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20 | PRIVATE |
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21 | |
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22 | PUBLIC trc_sms_age ! called by trcsms.F90 module |
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23 | |
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24 | INTEGER , PUBLIC :: nl_age ! T level surrounding age_depth |
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25 | INTEGER , PUBLIC :: nla_age ! T level wholly above age_depth |
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26 | INTEGER , PUBLIC :: nlb_age ! T level wholly below age_depth |
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27 | |
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28 | REAL(wp), PUBLIC :: rn_age_depth ! = 10 depth over which age tracer reset to zero |
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29 | 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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30 | |
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31 | REAL(wp), PUBLIC :: rryear !: recip number of seconds in one year |
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32 | REAL(wp), PUBLIC :: frac_kill_age !: fraction of level nl_age above age_depth where it is relaxed towards zero |
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33 | REAL(wp), PUBLIC :: frac_add_age !: fraction of level nl_age below age_depth where it is incremented |
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34 | |
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35 | |
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36 | !!---------------------------------------------------------------------- |
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37 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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38 | !! $Id$ |
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39 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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40 | !!---------------------------------------------------------------------- |
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41 | CONTAINS |
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42 | |
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43 | SUBROUTINE trc_sms_age( kt ) |
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44 | !!---------------------------------------------------------------------- |
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45 | !! *** trc_sms_age *** |
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46 | !! |
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47 | !! ** Purpose : main routine of AGE model |
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48 | !! |
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49 | !! ** Method : - |
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50 | !!---------------------------------------------------------------------- |
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51 | ! |
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52 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
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53 | INTEGER :: jn, jk ! dummy loop index |
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54 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ztrage |
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55 | !!---------------------------------------------------------------------- |
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56 | ! |
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57 | IF( nn_timing == 1 ) CALL timing_start('trc_sms_age') |
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58 | ! |
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59 | IF(lwp) WRITE(numout,*) |
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60 | IF(lwp) WRITE(numout,*) ' trc_sms_age: AGE model' |
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61 | IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~~~~' |
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62 | |
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63 | IF( l_trdtrc ) CALL wrk_alloc( jpi, jpj, jpk, ztrage ) |
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64 | |
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65 | DO jk = 1, nla_age |
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66 | tra(:,:,jk,jpage1) = rn_age_kill_rate * trb(:,:,jk,jpage1) |
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67 | ENDDO |
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68 | ! |
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69 | tra(:,:,nl_age,jpage1) = frac_kill_age * rn_age_kill_rate * trb(:,:,nl_age,jpage1) & |
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70 | & + frac_add_age * rryear * tmask(:,:,nl_age) |
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71 | ! |
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72 | DO jk = nlb_age, jpk |
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73 | tra(:,:,jk,jpage1) = tmask(:,:,jk) * rryear |
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74 | ENDDO |
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75 | ! |
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76 | IF( l_trdtrc ) THEN ! Save the trends in the ixed layer |
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77 | DO jn = jp_age0, jp_age1 |
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78 | ztrage(:,:,:) = tra(:,:,:,jn) |
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79 | CALL trd_trc( ztrage, jn, jptra_sms, kt ) ! save trends |
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80 | END DO |
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81 | CALL wrk_dealloc( jpi, jpj, jpk, ztrage ) |
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82 | END IF |
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83 | ! |
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84 | IF( nn_timing == 1 ) CALL timing_stop('trc_sms_age') |
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85 | ! |
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86 | END SUBROUTINE trc_sms_age |
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87 | |
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88 | #else |
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89 | !!---------------------------------------------------------------------- |
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90 | !! Dummy module No AGE model |
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91 | !!---------------------------------------------------------------------- |
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92 | CONTAINS |
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93 | SUBROUTINE trc_sms_age( kt ) ! Empty routine |
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94 | INTEGER, INTENT( in ) :: kt |
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95 | WRITE(*,*) 'trc_sms_age: You should not have seen this print! error?', kt |
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96 | END SUBROUTINE trc_sms_age |
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97 | #endif |
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98 | |
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99 | !!====================================================================== |
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100 | END MODULE trcsms_age |
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