1 | |
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2 | CCC $Header$ |
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3 | CCC TOP 1.0 , LOCEAN-IPSL (2005) |
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4 | C This software is governed by CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
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5 | C --------------------------------------------------------------------------- |
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6 | CDIR$ LIST |
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7 | SUBROUTINE p4zdiat |
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8 | #if defined key_passivetrc && defined key_trc_pisces |
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9 | CCC--------------------------------------------------------------------- |
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10 | CCC |
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11 | CCC ROUTINE p4zdiat : PISCES MODEL |
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12 | CCC ****************************** |
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13 | CCC |
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14 | CCC PURPOSE : |
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15 | CCC --------- |
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16 | CCC Compute the mortality terms for diatoms |
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17 | CCC |
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18 | CC INPUT : |
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19 | CC ----- |
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20 | CC argument |
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21 | CC None |
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22 | CC common |
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23 | CC all the common defined in opa |
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24 | CC |
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25 | CC |
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26 | CC OUTPUT : : no |
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27 | CC ------ |
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28 | CC |
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29 | CC EXTERNAL : |
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30 | CC -------- |
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31 | CC None |
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32 | CC |
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33 | CC MODIFICATIONS: |
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34 | CC -------------- |
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35 | CC original : O. Aumont (2002) |
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36 | CC---------------------------------------------------------------------- |
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37 | CC parameters and commons |
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38 | CC ====================== |
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39 | CDIR$ NOLIST |
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40 | USE oce_trc |
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41 | USE trp_trc |
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42 | USE sms |
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43 | IMPLICIT NONE |
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44 | CDIR$ LIST |
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45 | CC---------------------------------------------------------------------- |
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46 | CC local declarations |
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47 | CC ================== |
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48 | INTEGER ji, jj, jk |
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49 | REAL compadi |
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50 | REAL wchl2n(jpi,jpj,jpk) |
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51 | |
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52 | |
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53 | C Aggregation term for diatoms is increased in case of nutrient |
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54 | C stress as observed in reality. The stressed cells become more |
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55 | C sticky and coagulate to sink quickly out of the euphotic zone |
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56 | C ------------------------------------------------------------ |
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57 | C |
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58 | DO jk = 1,jpkm1 |
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59 | DO jj = 1,jpj |
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60 | DO ji = 1,jpi |
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61 | wchl2n(ji,jj,jk)=wchl+0.02*(1.-min(trn(ji,jj,jk,jppo4)/conc1, |
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62 | & trn(ji,jj,jk,jpfer)/conc3,trn(ji,jj,jk,jpsil) |
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63 | & /(xksi(ji,jj)+rtrn),trn(ji,jj,jk,jpno3)/conc1,1.)) |
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64 | END DO |
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65 | END DO |
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66 | END DO |
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67 | |
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68 | DO jk = 1,jpkm1 |
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69 | DO jj = 1,jpj |
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70 | DO ji = 1,jpi |
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71 | C |
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72 | compadi = max((trn(ji,jj,jk,jpdia)-1E-8),0.) |
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73 | C |
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74 | C Aggregation term for diatoms is increased in case of nutrient |
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75 | C stress as observed in reality. The stressed cells become more |
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76 | C sticky and coagulate to sink quickly out of the euphotic zone |
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77 | C ------------------------------------------------------------ |
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78 | C |
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79 | respp2(ji,jj,jk) = rfact2*1E6/rjjss*wchl2n(ji,jj,jk) |
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80 | & *zdiss(ji,jj,jk)*compadi*trn(ji,jj,jk,jpdia)*tmask(ji,jj,jk) |
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81 | # if defined key_off_degrad |
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82 | & *facvol(ji,jj,jk) |
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83 | # endif |
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84 | |
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85 | respds(ji,jj,jk) = respp2(ji,jj,jk) |
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86 | & *trn(ji,jj,jk,jpbsi)/(trn(ji,jj,jk,jpdia)+rtrn) |
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87 | |
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88 | respdf(ji,jj,jk) = respp2(ji,jj,jk) |
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89 | & *trn(ji,jj,jk,jpdfe)/(trn(ji,jj,jk,jpdia)+rtrn) |
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90 | |
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91 | respdch(ji,jj,jk)=respp2(ji,jj,jk) |
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92 | & *trn(ji,jj,jk,jpdch)/(trn(ji,jj,jk,jpdia)+rtrn) |
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93 | C |
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94 | C Phytoplankton mortality. |
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95 | C ------------------------ |
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96 | C |
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97 | tortp2(ji,jj,jk) = mprat2*rfact2/rjjss*trn(ji,jj,jk,jpdia) |
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98 | & /(xkmort+trn(ji,jj,jk,jpdia))*compadi*tmask(ji,jj,jk) |
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99 | # if defined key_off_degrad |
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100 | & *facvol(ji,jj,jk) |
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101 | # endif |
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102 | |
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103 | tortds(ji,jj,jk) = tortp2(ji,jj,jk) |
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104 | & *trn(ji,jj,jk,jpbsi)/(trn(ji,jj,jk,jpdia)+rtrn) |
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105 | |
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106 | tortdf(ji,jj,jk)=tortp2(ji,jj,jk) |
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107 | & *trn(ji,jj,jk,jpdfe)/(trn(ji,jj,jk,jpdia)+rtrn) |
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108 | |
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109 | tortdch(ji,jj,jk)=tortp2(ji,jj,jk) |
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110 | & *trn(ji,jj,jk,jpdch)/(trn(ji,jj,jk,jpdia)+rtrn) |
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111 | C |
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112 | END DO |
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113 | END DO |
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114 | END DO |
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115 | C |
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116 | #endif |
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117 | RETURN |
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118 | END |
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119 | |
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