1 | MODULE timeloop_sw_mod |
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2 | USE genmod |
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3 | USE transfert_mod |
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4 | USE etat0_mod |
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5 | |
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6 | INTEGER,PARAMETER :: euler=1, leapfrog=2, leapfrog_matsuno=3, adam_bashforth=4 |
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7 | |
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8 | CONTAINS |
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9 | |
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10 | SUBROUTINE timeloop |
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11 | USE field_mod |
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12 | USE domain_mod |
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13 | ! USE wave_mod |
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14 | USE caldyn_sw_mod |
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15 | USE write_field |
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16 | USE dimensions |
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17 | USE geometry |
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18 | USE transfert_mod |
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19 | USE metric |
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20 | USE dissip_mod |
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21 | USE ioipsl |
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22 | |
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23 | USE etat0_mod |
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24 | IMPLICIT NONE |
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25 | TYPE(t_field),POINTER :: f_h(:),f_hm1(:), f_hm2(:) |
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26 | TYPE(t_field),POINTER :: f_u(:),f_um1(:),f_um2(:) |
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27 | TYPE(t_field),POINTER :: f_dh(:),f_dhm1(:), f_dhm2(:) |
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28 | TYPE(t_field),POINTER :: f_du(:),f_dum1(:),f_dum2(:) |
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29 | |
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30 | REAL(rstd),POINTER :: h(:) ,hm1(:), hm2(:) |
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31 | REAL(rstd),POINTER :: u(:) , um1(:), um2(:) |
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32 | REAL(rstd),POINTER :: dh(:), dhm1(:), dhm2(:) |
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33 | REAL(rstd),POINTER :: du(:), dum1(:), dum2(:) |
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34 | REAL(rstd) :: dt |
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35 | INTEGER :: ind |
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36 | INTEGER :: it,i,j,n |
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37 | INTEGER :: scheme |
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38 | INTEGER :: matsuno_period |
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39 | INTEGER :: itaumax |
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40 | |
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41 | |
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42 | dt=90. |
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43 | CALL getin('dt',dt) |
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44 | |
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45 | itaumax=100 |
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46 | CALL getin('itaumax',itaumax) |
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47 | |
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48 | scheme=leapfrog_matsuno |
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49 | CALL getin('scheme',scheme) |
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50 | |
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51 | matsuno_period=5 |
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52 | CALL getin('matsuno_period',matsuno_period) |
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53 | IF (scheme==leapfrog) matsuno_period=itaumax+1 |
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54 | |
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55 | |
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56 | CALL allocate_field(f_h,field_t,type_real) |
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57 | CALL allocate_field(f_hm1,field_t,type_real) |
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58 | CALL allocate_field(f_hm2,field_t,type_real) |
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59 | CALL allocate_field(f_dh,field_t,type_real) |
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60 | CALL allocate_field(f_dhm1,field_t,type_real) |
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61 | CALL allocate_field(f_dhm2,field_t,type_real) |
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62 | |
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63 | CALL allocate_field(f_u,field_u,type_real) |
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64 | CALL allocate_field(f_um1,field_u,type_real) |
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65 | CALL allocate_field(f_um2,field_u,type_real) |
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66 | CALL allocate_field(f_du,field_u,type_real) |
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67 | CALL allocate_field(f_dum1,field_u,type_real) |
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68 | CALL allocate_field(f_dum2,field_u,type_real) |
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69 | |
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70 | |
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71 | CALL allocate_caldyn |
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72 | |
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73 | |
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74 | CALL etat0_williamson(f_h,f_u) |
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75 | |
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76 | DO it=0,itaumax |
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77 | PRINT *,"SW: It No :",It |
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78 | |
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79 | CALL caldyn(f_h, f_u, f_dh, f_du) |
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80 | |
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81 | IF (scheme==Euler) THEN |
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82 | CALL euler_scheme |
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83 | ELSE IF (scheme==leapfrog) THEN |
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84 | CALL leapfrog_scheme |
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85 | ELSE IF (scheme==leapfrog_matsuno) THEN |
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86 | CALL leapfrog_matsuno_scheme |
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87 | ELSE IF (scheme==adam_bashforth) THEN |
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88 | CALL adam_bashforth_scheme |
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89 | ENDIF |
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90 | |
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91 | ENDDO |
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92 | |
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93 | CONTAINS |
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94 | |
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95 | SUBROUTINE Euler_scheme |
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96 | IMPLICIT NONE |
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97 | INTEGER :: ind |
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98 | |
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99 | DO ind=1,ndomain |
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100 | h=f_h(ind) ; u=f_u(ind) ; |
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101 | dh=f_dh(ind) ; du=f_du(ind) ; |
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102 | h(:)=h(:)+dt*dh(:) |
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103 | u(:)=u(:)+dt*du(:) |
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104 | ENDDO |
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105 | |
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106 | END SUBROUTINE Euler_scheme |
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107 | |
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108 | SUBROUTINE leapfrog_scheme |
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109 | IMPLICIT NONE |
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110 | INTEGER :: ind |
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111 | |
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112 | DO ind=1,ndomain |
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113 | h=f_h(ind) ; u=f_u(ind) ; |
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114 | hm1=f_hm1(ind) ; um1=f_um1(ind) ; |
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115 | hm2=f_hm2(ind) ; um2=f_um2(ind) ; |
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116 | dh=f_dh(ind) ; du=f_du(ind) ; |
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117 | |
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118 | IF (it==0) THEN |
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119 | hm2(:)=h(:) ; um2(:)=u(:) |
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120 | |
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121 | h(:)=h(:)+dt*dh(:) |
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122 | u(:)=u(:)+dt*du(:) |
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123 | hm1(:)=h(:) ; um1(:)=u(:) |
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124 | |
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125 | ELSE |
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126 | |
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127 | h(:)=hm2(:)+2*dt*dh(:) |
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128 | u(:)=um2(:)+2*dt*du(:) |
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129 | |
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130 | hm2(:)=hm1(:) ; um2(:)=um1(:) |
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131 | hm1(:)=h(:) ; um1(:)=u(:) |
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132 | ENDIF |
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133 | |
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134 | ENDDO |
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135 | END SUBROUTINE leapfrog_scheme |
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136 | |
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137 | SUBROUTINE leapfrog_matsuno_scheme |
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138 | IMPLICIT NONE |
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139 | INTEGER :: ind |
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140 | |
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141 | DO ind=1,ndomain |
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142 | h=f_h(ind) ; u=f_u(ind) |
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143 | hm1=f_hm1(ind) ; um1=f_um1(ind) |
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144 | hm2=f_hm2(ind) ; um2=f_um2(ind) |
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145 | dh=f_dh(ind) ; du=f_du(ind) ; |
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146 | |
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147 | |
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148 | IF (MOD(it,matsuno_period+1)==0) THEN |
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149 | hm1(:)=h(:) ; um1(:)=u(:) |
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150 | h(:)=hm1(:)+dt*dh(:) |
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151 | u(:)=um1(:)+dt*du(:) |
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152 | |
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153 | ELSE IF (MOD(it,matsuno_period+1)==1) THEN |
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154 | |
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155 | h(:)=hm1(:)+dt*dh(:) |
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156 | u(:)=um1(:)+dt*du(:) |
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157 | |
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158 | hm2(:)=hm1(:) ; um2(:)=um1(:) |
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159 | hm1(:)=h(:) ; um1(:)=u(:) |
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160 | |
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161 | ELSE |
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162 | |
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163 | h(:)=hm2(:)+2*dt*dh(:) |
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164 | u(:)=um2(:)+2*dt*du(:) |
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165 | |
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166 | hm2(:)=hm1(:) ; um2(:)=um1(:) |
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167 | hm1(:)=h(:) ; um1(:)=u(:) |
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168 | |
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169 | ENDIF |
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170 | |
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171 | ENDDO |
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172 | |
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173 | END SUBROUTINE leapfrog_matsuno_scheme |
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174 | |
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175 | SUBROUTINE adam_bashforth_scheme |
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176 | IMPLICIT NONE |
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177 | INTEGER :: ind |
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178 | |
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179 | DO ind=1,ndomain |
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180 | h=f_h(ind) ; u=f_u(ind) |
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181 | dh=f_dh(ind) ; du=f_du(ind) |
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182 | dhm1=f_dhm1(ind) ; dum1=f_dum1(ind) |
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183 | dhm2=f_dhm2(ind) ; dum2=f_dum2(ind) |
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184 | |
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185 | IF (it==0) THEN |
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186 | dhm1(:)=dh(:) ; dum1(:)=du(:) |
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187 | dhm2(:)=dhm1(:) ; dum2(:)=dum1(:) |
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188 | ENDIF |
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189 | |
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190 | h(:)=h(:)+dt*(23*dh(:)-16*dhm1(:)+5*dhm2(:))/12 |
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191 | u(:)=u(:)+dt*(23*du(:)-16*dum1(:)+5*dum2(:))/12 |
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192 | |
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193 | dhm2(:)=dhm1(:) ; dum2(:)=dum1(:) |
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194 | dhm1(:)=dh(:) ; dum1(:)=du(:) |
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195 | |
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196 | ENDDO |
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197 | |
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198 | |
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199 | END SUBROUTINE adam_bashforth_scheme |
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200 | |
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201 | END SUBROUTINE timeloop |
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202 | |
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203 | |
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204 | |
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205 | END MODULE timeloop_sw_mod |
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