1 | MODULE p4zche |
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2 | !!====================================================================== |
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3 | !! *** MODULE p4zche *** |
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4 | !! TOP : PISCES Sea water chemistry computed following OCMIP protocol |
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5 | !!====================================================================== |
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6 | !! History : - ! 1988 (E. Maier-Reimer) Original code |
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7 | !! - ! 1998 (O. Aumont) addition |
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8 | !! - ! 1999 (C. Le Quere) modification |
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9 | !! 1.0 ! 2004 (O. Aumont) modification |
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10 | !! - ! 2006 (R. Gangsto) modification |
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11 | !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 |
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12 | !!---------------------------------------------------------------------- |
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13 | #if defined key_pisces |
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14 | !!---------------------------------------------------------------------- |
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15 | !! 'key_pisces' PISCES bio-model |
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16 | !!---------------------------------------------------------------------- |
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17 | !! p4z_che : Sea water chemistry computed following OCMIP protocol |
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18 | !!---------------------------------------------------------------------- |
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19 | USE oce_trc ! |
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20 | USE trc ! |
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21 | USE sms_pisces ! |
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22 | |
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23 | IMPLICIT NONE |
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24 | PRIVATE |
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25 | |
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26 | PUBLIC p4z_che |
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27 | |
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28 | !! * Shared module variables |
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29 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpk) :: & !: |
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30 | sio3eq, fekeq !: chemistry of Fe and Si |
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31 | |
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32 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,2) :: & !: |
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33 | chemc !: Solubilities of O2 and CO2 |
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34 | |
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35 | !! * Module variables |
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36 | |
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37 | REAL(wp) :: & |
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38 | salchl = 1./1.80655 ! conversion factor for salinity --> chlorinity (Wooster et al. 1969) |
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39 | |
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40 | REAL(wp) :: & ! coeff. for apparent solubility equilibrium |
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41 | akcc1 = -171.9065 , & ! Millero et al. 1995 from Mucci 1983 |
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42 | akcc2 = -0.077993 , & |
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43 | akcc3 = 2839.319 , & |
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44 | akcc4 = 71.595 , & |
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45 | akcc5 = -0.77712 , & |
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46 | akcc6 = 0.0028426 , & |
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47 | akcc7 = 178.34 , & |
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48 | akcc8 = -0.07711 , & |
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49 | akcc9 = 0.0041249 |
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50 | |
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51 | REAL(wp) :: & ! universal gas constants |
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52 | rgas = 83.143, & |
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53 | oxyco = 1./22.4144 |
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54 | |
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55 | REAL(wp) :: & ! borat constants |
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56 | bor1 = 0.00023, & |
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57 | bor2 = 1./10.82 |
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58 | |
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59 | REAL(wp) :: & ! |
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60 | ca0 = -162.8301 , & |
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61 | ca1 = 218.2968 , & |
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62 | ca2 = 90.9241 , & |
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63 | ca3 = -1.47696 , & |
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64 | ca4 = 0.025695 , & |
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65 | ca5 = -0.025225 , & |
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66 | ca6 = 0.0049867 |
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67 | |
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68 | REAL(wp) :: & ! coeff. for 1. dissoc. of carbonic acid (Edmond and Gieskes, 1970) |
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69 | c10 = -3670.7 , & |
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70 | c11 = 62.008 , & |
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71 | c12 = -9.7944 , & |
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72 | c13 = 0.0118 , & |
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73 | c14 = -0.000116 |
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74 | |
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75 | REAL(wp) :: & ! coeff. for 2. dissoc. of carbonic acid (Millero, 1995) |
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76 | c20 = -1394.7 , & |
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77 | c21 = -4.777 , & |
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78 | c22 = 0.0184 , & |
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79 | c23 = -0.000118 |
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80 | |
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81 | REAL(wp) :: & ! constants for calculate concentrations |
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82 | st1 = 0.14 , & ! for sulfate (Morris & Riley 1966) |
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83 | st2 = 1./96.062, & |
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84 | ks0 = 141.328 , & |
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85 | ks1 = -4276.1 , & |
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86 | ks2 = -23.093 , & |
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87 | ks3 = -13856. , & |
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88 | ks4 = 324.57 , & |
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89 | ks5 = -47.986 , & |
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90 | ks6 = 35474. , & |
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91 | ks7 = -771.54 , & |
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92 | ks8 = 114.723 , & |
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93 | ks9 = -2698. , & |
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94 | ks10 = 1776. , & |
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95 | ks11 = 1. , & |
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96 | ks12 = -0.001005 |
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97 | |
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98 | REAL(wp) :: & ! constants for calculate concentrations |
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99 | ft1 = 0.000067 , & ! fluorides (Dickson & Riley 1979 ) |
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100 | ft2 = 1./18.9984 , & |
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101 | kf0 = -12.641 , & |
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102 | kf1 = 1590.2 , & |
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103 | kf2 = 1.525 , & |
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104 | kf3 = 1.0 , & |
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105 | kf4 =-0.001005 |
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106 | |
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107 | REAL(wp) :: & ! coeff. for 1. dissoc. of boric acid (Dickson and Goyet, 1994) |
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108 | cb0 = -8966.90, & |
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109 | cb1 = -2890.53, & |
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110 | cb2 = -77.942 , & |
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111 | cb3 = 1.728 , & |
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112 | cb4 = -0.0996 , & |
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113 | cb5 = 148.0248, & |
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114 | cb6 = 137.1942, & |
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115 | cb7 = 1.62142 , & |
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116 | cb8 = -24.4344, & |
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117 | cb9 = -25.085 , & |
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118 | cb10 = -0.2474 , & |
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119 | cb11 = 0.053105 |
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120 | |
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121 | REAL(wp) :: & ! coeff. for dissoc. of water (Dickson and Riley, 1979 ) |
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122 | cw0 = -13847.26 , & |
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123 | cw1 = 148.9652 , & |
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124 | cw2 = -23.6521 , & |
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125 | cw3 = 118.67 , & |
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126 | cw4 = -5.977 , & |
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127 | cw5 = 1.0495 , & |
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128 | cw6 = -0.01615 |
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129 | |
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130 | REAL(wp) :: & ! volumetric solubility constants for o2 in ml/l (Weiss, 1974) |
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131 | ox0 = -58.3877 , & |
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132 | ox1 = 85.8079 , & |
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133 | ox2 = 23.8439 , & |
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134 | ox3 = -0.034892 , & |
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135 | ox4 = 0.015568 , & |
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136 | ox5 = -0.0019387 |
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137 | |
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138 | REAL(wp), DIMENSION(5) :: & ! coeff. for seawater pressure correction |
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139 | devk1, devk2, devk3, & ! (millero 95) |
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140 | devk4, devk5 |
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141 | |
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142 | DATA devk1 / -25.5 , -15.82 , -29.48 , -25.60 , -48.76 / |
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143 | DATA devk2 / 0.1271 , -0.0219 , 0.1622 , 0.2324 , 0.5304 / |
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144 | DATA devk3 / 0. , 0. , 2.608E-3, -3.6246E-3, 0. / |
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145 | DATA devk4 / -3.08E-3 , 1.13E-3 , -2.84E-3, -5.13E-3 , -11.76E-3 / |
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146 | DATA devk5 / 0.0877E-3, -0.1475E-3, 0. , 0.0794E-3 , 0.3692E-3 / |
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147 | |
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148 | !!* Substitution |
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149 | #include "domzgr_substitute.h90" |
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150 | !!---------------------------------------------------------------------- |
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151 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
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152 | !! $Id$ |
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153 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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154 | !!---------------------------------------------------------------------- |
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155 | |
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156 | CONTAINS |
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157 | |
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158 | SUBROUTINE p4z_che |
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159 | !!--------------------------------------------------------------------- |
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160 | !! *** ROUTINE p4z_che *** |
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161 | !! |
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162 | !! ** Purpose : Sea water chemistry computed following OCMIP protocol |
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163 | !! |
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164 | !! ** Method : - ... |
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165 | !!--------------------------------------------------------------------- |
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166 | INTEGER :: ji, jj, jk |
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167 | REAL(wp) :: ztkel, zsal , zqtt , zbuf1 , zbuf2 |
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168 | REAL(wp) :: zpres, ztc , zcl , zcpexp, zoxy , zcpexp2 |
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169 | REAL(wp) :: zsqrt, ztr , zlogt , zcek1 |
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170 | REAL(wp) :: zlqtt, zqtt2, zsal15, zis , zis2 , zisqrt |
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171 | REAL(wp) :: zckb , zck1 , zck2 , zckw , zak1 , zak2 , zakb , zaksp0, zakw |
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172 | REAL(wp) :: zst , zft , zcks , zckf , zaksp1 |
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173 | !!--------------------------------------------------------------------- |
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174 | |
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175 | ! CHEMICAL CONSTANTS - SURFACE LAYER |
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176 | ! ---------------------------------- |
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177 | !CDIR NOVERRCHK |
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178 | DO jj = 1, jpj |
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179 | !CDIR NOVERRCHK |
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180 | DO ji = 1, jpi |
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181 | |
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182 | ! ! SET ABSOLUTE TEMPERATURE |
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183 | ztkel = tn(ji,jj,1) + 273.16 |
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184 | zqtt = ztkel * 0.01 |
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185 | zqtt2 = zqtt * zqtt |
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186 | zsal = sn(ji,jj,1) + (1.- tmask(ji,jj,1) ) * 35. |
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187 | zlqtt = LOG( zqtt ) |
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188 | |
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189 | ! ! LN(K0) OF SOLUBILITY OF CO2 (EQ. 12, WEISS, 1980) |
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190 | ! ! AND FOR THE ATMOSPHERE FOR NON IDEAL GAS |
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191 | zcek1 = ca0 + ca1 / zqtt + ca2 * zlqtt + ca3 * zqtt2 + zsal*( ca4 + ca5 * zqtt + ca6 * zqtt2 ) |
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192 | |
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193 | ! ! LN(K0) OF SOLUBILITY OF O2 and N2 (EQ. 4, WEISS, 1970) |
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194 | zoxy = ox0 + ox1 / zqtt + ox2 * zlqtt + zsal * ( ox3 + ox4 * zqtt + ox5 * zqtt2 ) |
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195 | |
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196 | ! ! SET SOLUBILITIES OF O2 AND CO2 |
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197 | chemc(ji,jj,1) = EXP( zcek1 ) * 1.e-6 * rhop(ji,jj,1) / 1000. |
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198 | chemc(ji,jj,2) = EXP( zoxy ) * oxyco |
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199 | |
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200 | END DO |
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201 | END DO |
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202 | |
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203 | ! CHEMICAL CONSTANTS - DEEP OCEAN |
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204 | ! ------------------------------- |
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205 | !CDIR NOVERRCHK |
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206 | DO jk = 1, jpk |
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207 | !CDIR NOVERRCHK |
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208 | DO jj = 1, jpj |
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209 | !CDIR NOVERRCHK |
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210 | DO ji = 1, jpi |
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211 | |
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212 | ! SET PRESSION |
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213 | zpres = 1.025e-1 * fsdept(ji,jj,jk) |
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214 | |
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215 | ! SET ABSOLUTE TEMPERATURE |
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216 | ztkel = tn(ji,jj,jk) + 273.16 |
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217 | zqtt = ztkel * 0.01 |
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218 | zsal = sn(ji,jj,jk) + ( 1.-tmask(ji,jj,jk) ) * 35. |
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219 | zsqrt = SQRT( zsal ) |
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220 | zsal15 = zsqrt * zsal |
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221 | zlogt = LOG( ztkel ) |
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222 | ztr = 1. / ztkel |
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223 | zis = 19.924 * zsal / ( 1000.- 1.005 * zsal ) |
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224 | zis2 = zis * zis |
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225 | zisqrt = SQRT( zis ) |
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226 | ztc = tn(ji,jj,jk) + ( 1.- tmask(ji,jj,jk) ) * 20. |
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227 | |
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228 | ! CHLORINITY (WOOSTER ET AL., 1969) |
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229 | zcl = zsal * salchl |
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230 | |
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231 | ! TOTAL SULFATE CONCENTR. [MOLES/kg soln] |
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232 | zst = st1 * zcl * st2 |
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233 | |
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234 | ! TOTAL FLUORIDE CONCENTR. [MOLES/kg soln] |
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235 | zft = ft1 * zcl * ft2 |
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236 | |
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237 | ! DISSOCIATION CONSTANT FOR SULFATES on free H scale (Dickson 1990) |
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238 | zcks = EXP( ks1 * ztr + ks0 + ks2 * zlogt & |
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239 | & + ( ks3 * ztr + ks4 + ks5 * zlogt ) * zisqrt & |
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240 | & + ( ks6 * ztr + ks7 + ks8 * zlogt ) * zis & |
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241 | & + ks9 * ztr * zis * zisqrt + ks10 * ztr *zis2 + LOG( ks11 + ks12 *zsal ) ) |
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242 | |
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243 | ! DISSOCIATION CONSTANT FOR FLUORIDES on free H scale (Dickson and Riley 79) |
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244 | zckf = EXP( kf1 * ztr + kf0 + kf2 * zisqrt + LOG( kf3 + kf4 * zsal ) ) |
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245 | |
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246 | ! DISSOCIATION CONSTANT FOR CARBONATE AND BORATE |
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247 | zckb = ( cb0 + cb1 * zsqrt + cb2 * zsal + cb3 * zsal15 + cb4 * zsal * zsal ) * ztr & |
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248 | & + ( cb5 + cb6 * zsqrt + cb7 * zsal ) & |
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249 | & + ( cb8 + cb9 * zsqrt + cb10 * zsal ) * zlogt + cb11 * zsqrt * ztkel & |
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250 | & + LOG( ( 1.+ zst / zcks + zft / zckf ) / ( 1.+ zst / zcks ) ) |
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251 | !!gm zsal**2 to be replaced by a *... |
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252 | zck1 = c10 * ztr + c11 + c12 * zlogt + c13 * zsal + c14 * zsal**2 |
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253 | zck2 = c20 * ztr + c21 + c22 * zsal + c23 * zsal**2 |
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254 | |
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255 | ! PKW (H2O) (DICKSON AND RILEY, 1979) |
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256 | zckw = cw0 * ztr + cw1 + cw2 * zlogt + ( cw3 * ztr + cw4 + cw5 * zlogt ) * zsqrt + cw6 * zsal |
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257 | |
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258 | |
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259 | ! APPARENT SOLUBILITY PRODUCT K'SP OF CALCITE IN SEAWATER |
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260 | ! (S=27-43, T=2-25 DEG C) at pres =0 (atmos. pressure) (MUCCI 1983) |
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261 | zaksp0 = akcc1 + akcc2 * ztkel + akcc3 * ztr + akcc4 * LOG10( ztkel ) & |
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262 | & + ( akcc5 + akcc6 * ztkel + akcc7 * ztr ) * zsqrt + akcc8 * zsal + akcc9 * zsal15 |
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263 | |
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264 | ! K1, K2 OF CARBONIC ACID, KB OF BORIC ACID, KW (H2O) (LIT.?) |
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265 | zak1 = 10**(zck1) |
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266 | zak2 = 10**(zck2) |
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267 | zakb = EXP( zckb ) |
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268 | zakw = EXP( zckw ) |
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269 | zaksp1 = 10**(zaksp0) |
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270 | |
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271 | ! FORMULA FOR CPEXP AFTER EDMOND & GIESKES (1970) |
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272 | ! (REFERENCE TO CULBERSON & PYTKOQICZ (1968) AS MADE |
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273 | ! IN BROECKER ET AL. (1982) IS INCORRECT; HERE RGAS IS |
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274 | ! TAKEN TENFOLD TO CORRECT FOR THE NOTATION OF pres IN |
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275 | ! DBAR INSTEAD OF BAR AND THE EXPRESSION FOR CPEXP IS |
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276 | ! MULTIPLIED BY LN(10.) TO ALLOW USE OF EXP-FUNCTION |
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277 | ! WITH BASIS E IN THE FORMULA FOR AKSPP (CF. EDMOND |
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278 | ! & GIESKES (1970), P. 1285-1286 (THE SMALL |
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279 | ! FORMULA ON P. 1286 IS RIGHT AND CONSISTENT WITH THE |
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280 | ! SIGN IN PARTIAL MOLAR VOLUME CHANGE AS SHOWN ON P. 1285)) |
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281 | zcpexp = zpres /(rgas*ztkel) |
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282 | zcpexp2 = zpres * zpres/(rgas*ztkel) |
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283 | |
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284 | ! KB OF BORIC ACID, K1,K2 OF CARBONIC ACID PRESSURE |
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285 | ! CORRECTION AFTER CULBERSON AND PYTKOWICZ (1968) |
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286 | ! (CF. BROECKER ET AL., 1982) |
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287 | |
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288 | zbuf1 = -(devk1(1)+devk2(1)*ztc+devk3(1)*ztc*ztc) |
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289 | zbuf2 = 0.5*(devk4(1)+devk5(1)*ztc) |
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290 | ak13(ji,jj,jk) = zak1 * EXP( zbuf1 * zcpexp + zbuf2 * zcpexp2 ) |
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291 | |
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292 | zbuf1 = - ( devk1(2) + devk2(2) * ztc + devk3(2) * ztc * ztc ) |
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293 | zbuf2 = 0.5 * ( devk4(2) + devk5(2) * ztc ) |
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294 | ak23(ji,jj,jk) = zak2 * EXP( zbuf1 * zcpexp + zbuf2 * zcpexp2 ) |
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295 | |
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296 | zbuf1 = - ( devk1(3) + devk2(3) * ztc + devk3(3) * ztc * ztc ) |
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297 | zbuf2 = 0.5 * ( devk4(3) + devk5(3) * ztc ) |
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298 | akb3(ji,jj,jk) = zakb * EXP( zbuf1 * zcpexp + zbuf2 * zcpexp2 ) |
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299 | |
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300 | zbuf1 = - ( devk1(4) + devk2(4) * ztc + devk3(4) * ztc * ztc ) |
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301 | zbuf2 = 0.5 * ( devk4(4) + devk5(4) * ztc ) |
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302 | akw3(ji,jj,jk) = zakw * EXP( zbuf1 * zcpexp + zbuf2 * zcpexp2 ) |
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303 | |
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304 | |
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305 | ! APPARENT SOLUBILITY PRODUCT K'SP OF CALCITE |
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306 | ! AS FUNCTION OF PRESSURE FOLLOWING MILLERO |
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307 | ! (P. 1285) AND BERNER (1976) |
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308 | zbuf1 = - ( devk1(5) + devk2(5) * ztc + devk3(5) * ztc * ztc ) |
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309 | zbuf2 = 0.5 * ( devk4(5) + devk5(5) * ztc ) |
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310 | aksp(ji,jj,jk) = zaksp1 * EXP( zbuf1 * zcpexp + zbuf2 * zcpexp2 ) |
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311 | |
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312 | |
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313 | ! TOTAL BORATE CONCENTR. [MOLES/L] |
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314 | borat(ji,jj,jk) = bor1 * zcl * bor2 |
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315 | |
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316 | ! Iron and SIO3 saturation concentration from ... |
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317 | sio3eq(ji,jj,jk) = EXP( LOG( 10.) * ( 6.44 - 968. / ztkel ) ) * 1.e-6 |
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318 | fekeq (ji,jj,jk) = 10**( 17.27 - 1565.7 / ( 273.15 + ztc ) ) |
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319 | |
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320 | END DO |
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321 | END DO |
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322 | END DO |
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323 | ! |
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324 | END SUBROUTINE p4z_che |
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325 | |
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326 | #else |
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327 | !!====================================================================== |
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328 | !! Dummy module : No PISCES bio-model |
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329 | !!====================================================================== |
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330 | CONTAINS |
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331 | SUBROUTINE p4z_che( kt ) ! Empty routine |
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332 | INTEGER, INTENT( in ) :: kt |
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333 | WRITE(*,*) 'p4z_che: You should not have seen this print! error?', kt |
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334 | END SUBROUTINE p4z_che |
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335 | #endif |
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336 | |
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337 | !!====================================================================== |
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338 | END MODULE p4zche |
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