1 | MODULE etat0_dcmip3_mod |
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2 | |
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3 | ! test cases DCMIP 2012, category 3 : Non-hydrostatic gravity waves |
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4 | |
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5 | ! Questions |
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6 | ! Replace ps0 by preff ?? |
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7 | |
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8 | USE genmod |
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9 | PRIVATE |
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10 | ! some of the following should be obtained via getin |
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11 | ! REAL(rstd),PARAMETER :: ztop=10000. ! Height position of the model top (m) |
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12 | ! REAL(rstd),PARAMETER :: ptop=27391.9 ! Pressure at the model top (Pa) |
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13 | ! REAL(rstd),PARAMETER :: Xscale=1. ! Small-planet scaling factor (1=Earth) |
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14 | ! REAL(rstd),PARAMETER :: Omega =0 ! Planetary rotation rate (s-1) |
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15 | REAL(rstd),PARAMETER :: u0=20. ! Maximum amplitude of the zonal wind (m.s-1) |
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16 | REAL(rstd),PARAMETER :: zs=0. ! Surface elevation (m) |
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17 | REAL(rstd),PARAMETER :: N=0.01 ! Brunt-Vaissala frequency (s-1) |
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18 | REAL(rstd),PARAMETER :: Teq=300. ! Surface temperature at the equator (K) |
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19 | REAL(rstd),PARAMETER :: Peq=1e5 ! Reference surface pressure at the equator (hPa) |
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20 | REAL(rstd),PARAMETER :: d=5000. ! Witdth parameter for theta |
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21 | REAL(rstd),PARAMETER :: lonc=2*pi/3 ! Longitudinal centerpoint of theta |
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22 | REAL(rstd),PARAMETER :: latc=0 ! Longitudinal centerpoint of theta |
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23 | REAL(rstd),PARAMETER :: dtheta=1. ! Maximum amplitude of theta (K) |
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24 | REAL(rstd),PARAMETER :: Lz=20000. ! Vertical wave lenght of the theta perturbation |
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25 | |
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26 | PUBLIC etat0 |
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27 | CONTAINS |
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28 | |
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29 | |
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30 | SUBROUTINE etat0(f_ps,f_phis,f_theta_rhodz,f_u, f_q) |
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31 | USE icosa |
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32 | IMPLICIT NONE |
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33 | TYPE(t_field),POINTER :: f_ps(:) |
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34 | TYPE(t_field),POINTER :: f_phis(:) |
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35 | TYPE(t_field),POINTER :: f_theta_rhodz(:) |
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36 | TYPE(t_field),POINTER :: f_u(:) |
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37 | TYPE(t_field),POINTER :: f_q(:) |
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38 | |
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39 | REAL(rstd),POINTER :: ps(:) |
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40 | REAL(rstd),POINTER :: phis(:) |
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41 | REAL(rstd),POINTER :: u(:,:) |
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42 | REAL(rstd),POINTER :: theta_rhodz(:,:) |
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43 | REAL(rstd),POINTER :: q(:,:,:) |
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44 | |
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45 | INTEGER :: ind |
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46 | |
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47 | DO ind=1,ndomain |
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48 | CALL swap_dimensions(ind) |
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49 | CALL swap_geometry(ind) |
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50 | |
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51 | ps=f_ps(ind) |
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52 | phis=f_phis(ind) |
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53 | u=f_u(ind) |
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54 | theta_rhodz=f_theta_rhodz(ind) |
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55 | q=f_q(ind) |
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56 | CALL compute_etat0_DCMIP3(ps,phis,u,theta_rhodz,q) |
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57 | ENDDO |
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58 | |
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59 | END SUBROUTINE etat0 |
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60 | |
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61 | |
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62 | SUBROUTINE compute_etat0_DCMIP3(ps, phis, u, theta_rhodz,q) |
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63 | USE icosa |
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64 | USE pression_mod |
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65 | USE theta2theta_rhodz_mod |
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66 | USE wind_mod |
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67 | IMPLICIT NONE |
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68 | REAL(rstd), INTENT(OUT) :: ps(iim*jjm) |
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69 | REAL(rstd), INTENT(OUT) :: phis(iim*jjm) |
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70 | REAL(rstd), INTENT(OUT) :: u(3*iim*jjm,llm) |
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71 | REAL(rstd), INTENT(OUT) :: theta_rhodz(iim*jjm,llm) |
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72 | REAL(rstd), INTENT(OUT) :: q(iim*jjm,llm,nqtot) |
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73 | |
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74 | REAL(rstd) :: Ts(iim*jjm) |
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75 | REAL(rstd) :: s(iim*jjm) |
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76 | REAL(rstd) :: z(iim*jjm,llm) |
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77 | REAL(rstd) :: T(iim*jjm,llm) |
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78 | REAL(rstd) :: p(iim*jjm,llm+1) |
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79 | REAL(rstd) :: thetap(iim*jjm,llm) |
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80 | REAL(rstd) :: thetap_rhodz(iim*jjm,llm) |
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81 | REAL(rstd) :: ulon(3*iim*jjm,llm) |
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82 | REAL(rstd) :: ulat(3*iim*jjm,llm) |
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83 | |
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84 | |
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85 | INTEGER :: i,j,l,ij |
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86 | REAL(rstd) :: Rd ! gas constant of dry air, P=rho.Rd.T |
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87 | REAL(rstd) :: alpha, rm, zs |
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88 | REAL(rstd) :: lon,lat |
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89 | REAL(rstd) :: C0,C1 |
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90 | REAL(rstd) :: GG |
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91 | REAL(rstd) :: pspsk,r |
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92 | |
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93 | Rd=cpp/kappa |
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94 | |
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95 | ! alpha=g/Rd/lapse_rate ! g/(Rd*Gamma) |
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96 | |
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97 | GG=(g/N)**2/cpp |
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98 | C0=0.25*u0*(u0+2.*Omega*radius) |
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99 | |
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100 | q(:,:,:)=0 |
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101 | |
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102 | |
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103 | DO j=jj_begin,jj_end |
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104 | DO i=ii_begin,ii_end |
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105 | ij=(j-1)*iim+i |
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106 | CALL xyz2lonlat(xyz_i(ij,:),lon,lat) |
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107 | C1=C0*(cos(2*lat)-1) |
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108 | |
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109 | !--- GROUND GEOPOTENTIAL |
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110 | phis(ij)=0. |
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111 | |
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112 | !--- GROUND TEMPERATURE |
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113 | Ts(ij) = GG+(Teq-GG)*EXP(-C1*(N/g)**2) |
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114 | |
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115 | !--- GROUND PRESSURE |
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116 | Ps(ij) = peq*EXP(C1/GG/Rd)*(Ts(ij)/Teq)**(1/kappa) |
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117 | |
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118 | |
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119 | r=radius*acos(sin(latc)*sin(lat)+cos(latc)*cos(lat)*cos(lon-lonc)) |
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120 | s(ij)= d**2/(d**2+r**2) |
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121 | END DO |
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122 | END DO |
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123 | |
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124 | CALL compute_pression(ps,p,0) |
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125 | |
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126 | DO l=1,llm |
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127 | DO j=jj_begin,jj_end |
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128 | DO i=ii_begin,ii_end |
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129 | ij=(j-1)*iim+i |
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130 | |
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131 | pspsk=(0.5*(p(ij,l+1)+p(ij,l))/ps(ij) )**kappa |
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132 | T(ij,l)=Ts(ij)*pspsk / ( Ts(ij) / GG * ( pspsk-1) +1) |
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133 | z(ij,l)=-g/N**2*log( Ts(ij)/GG * (pspsk -1)+1) |
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134 | ENDDO |
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135 | ENDDO |
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136 | ENDDO |
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137 | |
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138 | CALL compute_temperature2theta_rhodz(ps,T,theta_rhodz,0) |
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139 | |
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140 | DO l=1,llm |
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141 | DO j=jj_begin,jj_end |
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142 | DO i=ii_begin,ii_end |
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143 | ij=(j-1)*iim+i |
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144 | thetap(ij,l)=dtheta *sin(2*Pi*z(ij,l)/Lz) * s(ij) |
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145 | ENDDO |
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146 | ENDDO |
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147 | ENDDO |
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148 | |
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149 | CALL compute_theta2theta_rhodz(ps,thetap,thetap_rhodz,0) |
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150 | |
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151 | |
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152 | DO l=1,llm |
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153 | DO j=jj_begin,jj_end |
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154 | DO i=ii_begin,ii_end |
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155 | ij=(j-1)*iim+i |
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156 | theta_rhodz(ij,l)=theta_rhodz(ij,l)+thetap_rhodz(ij,l) |
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157 | ENDDO |
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158 | ENDDO |
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159 | ENDDO |
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160 | |
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161 | DO l=1,llm |
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162 | DO j=jj_begin-1,jj_end+1 |
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163 | DO i=ii_begin-1,ii_end+1 |
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164 | ij=(j-1)*iim+i |
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165 | CALL xyz2lonlat(xyz_e(ij+u_right,:),lon,lat) |
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166 | ulon(ij+u_right,l)=u0*cos(lat) |
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167 | ulat(ij+u_right,l)=0 |
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168 | |
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169 | CALL xyz2lonlat(xyz_e(ij+u_lup,:),lon,lat) |
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170 | ulon(ij+u_lup,l)=u0*cos(lat) |
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171 | ulat(ij+u_lup,l)=0 |
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172 | |
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173 | CALL xyz2lonlat(xyz_e(ij+u_ldown,:),lon,lat) |
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174 | ulon(ij+u_ldown,l)=u0*cos(lat) |
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175 | ulat(ij+u_ldown,l)=0 |
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176 | ENDDO |
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177 | ENDDO |
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178 | ENDDO |
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179 | |
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180 | |
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181 | CALL compute_wind_perp_from_lonlat_compound(ulon,ulat,u) |
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182 | |
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183 | |
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184 | |
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185 | END SUBROUTINE compute_etat0_DCMIP3 |
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186 | |
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187 | |
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188 | END MODULE etat0_DCMIP3_mod |
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