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 p4znano |
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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 p4znano : 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 nanophytoplankton |
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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 zfact,zstep,compaph |
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50 | C |
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51 | C Time step duration for biology |
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52 | C ------------------------------ |
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53 | C |
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54 | zstep=rfact2/rjjss |
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55 | C |
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56 | DO jk = 1,jpkm1 |
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57 | DO jj = 1,jpj |
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58 | DO ji = 1,jpi |
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59 | C |
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60 | compaph = max((trn(ji,jj,jk,jpphy)-1E-8),0.) |
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61 | zfact=1./(trn(ji,jj,jk,jpphy)+rtrn) |
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62 | C |
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63 | C Squared mortality of Phyto similar to a sedimentation term during |
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64 | C blooms (Doney et al. 1996) |
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65 | C ----------------------------------------------------------------- |
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66 | C |
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67 | respp(ji,jj,jk) = wchl*1e6*zstep*zdiss(ji,jj,jk) |
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68 | & *compaph*trn(ji,jj,jk,jpphy) |
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69 | # if defined key_off_degrad |
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70 | & *facvol(ji,jj,jk) |
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71 | # endif |
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72 | |
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73 | respnf(ji,jj,jk) = respp(ji,jj,jk) |
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74 | & *trn(ji,jj,jk,jpnfe)*zfact |
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75 | |
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76 | respnch(ji,jj,jk) = respp(ji,jj,jk) |
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77 | & *trn(ji,jj,jk,jpnch)*zfact |
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78 | C |
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79 | C Phytoplankton mortality. This mortality loss is slightly |
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80 | C increased when nutrients are limiting phytoplankton growth |
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81 | C as observed for instance in case of iron limitation. |
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82 | C ---------------------------------------------------------- |
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83 | C |
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84 | tortp(ji,jj,jk) = mprat*zstep*trn(ji,jj,jk,jpphy) |
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85 | $ /(xkmort+trn(ji,jj,jk,jpphy))*compaph |
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86 | # if defined key_off_degrad |
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87 | & *facvol(ji,jj,jk) |
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88 | # endif |
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89 | |
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90 | tortnf(ji,jj,jk)=tortp(ji,jj,jk) |
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91 | & *trn(ji,jj,jk,jpnfe)*zfact |
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92 | |
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93 | tortnch(ji,jj,jk)=tortp(ji,jj,jk) |
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94 | & *trn(ji,jj,jk,jpnch)*zfact |
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95 | C |
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96 | END DO |
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97 | END DO |
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98 | END DO |
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99 | C |
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100 | #endif |
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101 | RETURN |
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102 | END |
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