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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