[186] | 1 | CDIR$ LIST |
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| 2 | SUBROUTINE p4zdiat |
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| 3 | #if defined key_passivetrc && defined key_trc_pisces |
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| 4 | CCC--------------------------------------------------------------------- |
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| 5 | CCC |
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| 6 | CCC ROUTINE p4zdiat : PISCES MODEL |
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| 7 | CCC ****************************** |
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| 8 | CCC |
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| 9 | CCC PURPOSE : |
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| 10 | CCC --------- |
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| 11 | CCC Compute the mortality terms for diatoms |
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| 12 | CCC |
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| 13 | CC INPUT : |
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| 14 | CC ----- |
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| 15 | CC argument |
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| 16 | CC None |
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| 17 | CC common |
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| 18 | CC all the common defined in opa |
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| 19 | CC |
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| 20 | CC |
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| 21 | CC OUTPUT : : no |
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| 22 | CC ------ |
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| 23 | CC |
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| 24 | CC EXTERNAL : |
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| 25 | CC -------- |
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| 26 | CC None |
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| 27 | CC |
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| 28 | CC MODIFICATIONS: |
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| 29 | CC -------------- |
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| 30 | CC original : O. Aumont (2002) |
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| 31 | CC---------------------------------------------------------------------- |
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| 32 | CC parameters and commons |
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| 33 | CC ====================== |
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| 34 | CDIR$ NOLIST |
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| 35 | USE oce_trc |
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| 36 | USE trp_trc |
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| 37 | USE sms |
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| 38 | IMPLICIT NONE |
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| 39 | CDIR$ LIST |
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| 40 | CC---------------------------------------------------------------------- |
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| 41 | CC local declarations |
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| 42 | CC ================== |
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| 43 | INTEGER ji, jj, jk |
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| 44 | REAL compadi |
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| 45 | REAL wchl2n(jpi,jpj,jpk) |
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| 46 | |
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| 47 | |
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| 48 | C Aggregation term for diatoms is increased in case of nutrient |
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| 49 | C stress as observed in reality. The stressed cells become more |
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| 50 | C sticky and coagulate to sink quickly out of the euphotic zone |
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| 51 | C ------------------------------------------------------------ |
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| 52 | C |
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| 53 | DO jk = 1,jpkm1 |
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| 54 | DO jj = 1,jpj |
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| 55 | DO ji = 1,jpi |
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| 56 | wchl2n(ji,jj,jk)=wchl+0.02*(1.-min(trn(ji,jj,jk,jppo4)/conc1, |
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| 57 | & trn(ji,jj,jk,jpfer)/conc3,trn(ji,jj,jk,jpsil) |
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| 58 | & /(xksi(ji,jj)+rtrn),trn(ji,jj,jk,jpno3)/conc1,1.)) |
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| 59 | END DO |
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| 60 | END DO |
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| 61 | END DO |
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| 62 | |
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| 63 | DO jk = 1,jpkm1 |
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| 64 | DO jj = 1,jpj |
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| 65 | DO ji = 1,jpi |
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| 66 | C |
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| 67 | compadi = max((trn(ji,jj,jk,jpdia)-1E-8),0.) |
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| 68 | C |
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| 69 | C Aggregation term for diatoms is increased in case of nutrient |
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| 70 | C stress as observed in reality. The stressed cells become more |
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| 71 | C sticky and coagulate to sink quickly out of the euphotic zone |
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| 72 | C ------------------------------------------------------------ |
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| 73 | C |
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| 74 | respp2(ji,jj,jk) = rfact2*1E6/rjjss*wchl2n(ji,jj,jk) |
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| 75 | & *zdiss(ji,jj,jk)*compadi*trn(ji,jj,jk,jpdia)*tmask(ji,jj,jk) |
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| 76 | # if defined key_off_degrad |
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| 77 | & *facvol(ji,jj,jk) |
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| 78 | # endif |
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| 79 | |
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| 80 | respds(ji,jj,jk) = respp2(ji,jj,jk) |
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| 81 | & *trn(ji,jj,jk,jpbsi)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 82 | |
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| 83 | respdf(ji,jj,jk) = respp2(ji,jj,jk) |
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| 84 | & *trn(ji,jj,jk,jpdfe)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 85 | |
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| 86 | respdch(ji,jj,jk)=respp2(ji,jj,jk) |
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| 87 | & *trn(ji,jj,jk,jpdch)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 88 | C |
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| 89 | C Phytoplankton mortality. |
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| 90 | C ------------------------ |
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| 91 | C |
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| 92 | tortp2(ji,jj,jk) = mprat2*rfact2/rjjss*trn(ji,jj,jk,jpdia) |
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| 93 | & /(xkmort+trn(ji,jj,jk,jpdia))*compadi*tmask(ji,jj,jk) |
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| 94 | # if defined key_off_degrad |
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| 95 | & *facvol(ji,jj,jk) |
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| 96 | # endif |
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| 97 | |
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| 98 | tortds(ji,jj,jk) = tortp2(ji,jj,jk) |
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| 99 | & *trn(ji,jj,jk,jpbsi)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 100 | |
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| 101 | tortdf(ji,jj,jk)=tortp2(ji,jj,jk) |
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| 102 | & *trn(ji,jj,jk,jpdfe)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 103 | |
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| 104 | tortdch(ji,jj,jk)=tortp2(ji,jj,jk) |
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| 105 | & *trn(ji,jj,jk,jpdch)/(trn(ji,jj,jk,jpdia)+rtrn) |
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| 106 | C |
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| 107 | END DO |
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| 108 | END DO |
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| 109 | END DO |
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| 110 | C |
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| 111 | #endif |
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| 112 | RETURN |
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| 113 | END |
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| 114 | |
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