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 | USE dcmip_initial_conditions_test_1_2_3 |
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10 | |
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11 | PRIVATE |
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12 | |
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13 | PUBLIC etat0 |
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14 | |
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15 | CONTAINS |
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16 | |
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17 | |
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18 | SUBROUTINE etat0(f_ps,f_phis,f_theta_rhodz,f_u, f_q) |
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19 | USE icosa |
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20 | IMPLICIT NONE |
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21 | TYPE(t_field),POINTER :: f_ps(:) |
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22 | TYPE(t_field),POINTER :: f_phis(:) |
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23 | TYPE(t_field),POINTER :: f_theta_rhodz(:) |
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24 | TYPE(t_field),POINTER :: f_u(:) |
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25 | TYPE(t_field),POINTER :: f_q(:) |
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26 | |
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27 | REAL(rstd),POINTER :: ps(:) |
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28 | REAL(rstd),POINTER :: phis(:) |
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29 | REAL(rstd),POINTER :: u(:,:) |
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30 | REAL(rstd),POINTER :: theta_rhodz(:,:) |
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31 | REAL(rstd),POINTER :: q(:,:,:) |
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32 | |
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33 | INTEGER :: ind |
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34 | |
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35 | DO ind=1,ndomain |
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36 | CALL swap_dimensions(ind) |
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37 | CALL swap_geometry(ind) |
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38 | |
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39 | ps=f_ps(ind) |
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40 | phis=f_phis(ind) |
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41 | u=f_u(ind) |
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42 | theta_rhodz=f_theta_rhodz(ind) |
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43 | q=f_q(ind) |
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44 | CALL compute_etat0_DCMIP3(ps,phis,u,theta_rhodz,q) |
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45 | ENDDO |
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46 | |
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47 | END SUBROUTINE etat0 |
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48 | |
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49 | |
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50 | SUBROUTINE compute_etat0_DCMIP3(ps, phis, u, theta_rhodz,q) |
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51 | USE icosa |
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52 | USE pression_mod |
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53 | USE theta2theta_rhodz_mod |
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54 | USE wind_mod |
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55 | IMPLICIT NONE |
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56 | REAL(rstd),PARAMETER :: u0=20. ! Maximum amplitude of the zonal wind (m.s-1) |
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57 | REAL(rstd),PARAMETER :: N=0.01 ! Brunt-Vaisala frequency (s-1) |
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58 | REAL(rstd),PARAMETER :: Teq=300. ! Surface temperature at the equator (K) |
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59 | REAL(rstd),PARAMETER :: Peq=1e5 ! Reference surface pressure at the equator (hPa) |
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60 | REAL(rstd),PARAMETER :: d=5000. ! Witdth parameter for theta |
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61 | REAL(rstd),PARAMETER :: lonc=2*pi/3 ! Longitudinal centerpoint of theta |
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62 | REAL(rstd),PARAMETER :: latc=0 ! Longitudinal centerpoint of theta |
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63 | REAL(rstd),PARAMETER :: dtheta=1. ! Maximum amplitude of theta (K) |
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64 | REAL(rstd),PARAMETER :: Lz=20000. ! Vertical wave lenght of the theta perturbation |
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65 | |
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66 | REAL(rstd), INTENT(OUT) :: ps(iim*jjm) |
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67 | REAL(rstd), INTENT(OUT) :: phis(iim*jjm) |
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68 | REAL(rstd), INTENT(OUT) :: u(3*iim*jjm,llm) |
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69 | REAL(rstd), INTENT(OUT) :: theta_rhodz(iim*jjm,llm) |
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70 | REAL(rstd), INTENT(OUT) :: q(iim*jjm,llm,nqtot) |
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71 | |
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72 | REAL(rstd) :: Ts(iim*jjm) |
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73 | REAL(rstd) :: s(iim*jjm) |
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74 | REAL(rstd) :: T(iim*jjm,llm) |
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75 | REAL(rstd) :: p(iim*jjm,llm+1) |
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76 | REAL(rstd) :: theta(iim*jjm,llm) |
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77 | REAL(rstd) :: ulon(3*iim*jjm,llm) |
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78 | REAL(rstd) :: ulat(3*iim*jjm,llm) |
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79 | |
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80 | |
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81 | INTEGER :: i,j,l,ij |
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82 | REAL(rstd) :: Rd ! gas constant of dry air, P=rho.Rd.T |
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83 | REAL(rstd) :: alpha, rm |
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84 | REAL(rstd) :: lon,lat, C0, C1, GG |
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85 | REAL(rstd) :: p0psk, pspsk,r,zz, thetab, thetap |
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86 | REAL(rstd) :: dummy, pp |
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87 | LOGICAL :: use_dcmip_routine |
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88 | |
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89 | Rd=cpp*kappa |
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90 | |
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91 | GG=(g/N)**2/cpp |
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92 | C0=0.25*u0*(u0+2.*Omega*radius) |
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93 | |
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94 | q(:,:,:)=0 |
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95 | |
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96 | ! use_dcmip_routine=.TRUE. |
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97 | use_dcmip_routine=.FALSE. |
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98 | dummy=0. |
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99 | |
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100 | pp=peq |
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101 | DO j=jj_begin,jj_end |
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102 | DO i=ii_begin,ii_end |
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103 | ij=(j-1)*iim+i |
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104 | CALL xyz2lonlat(xyz_i(ij,:),lon,lat) |
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105 | |
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106 | IF(use_dcmip_routine) THEN |
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107 | CALL test3_gravity_wave(lon,lat,pp,dummy,0, dummy,dummy,dummy,dummy,phis(ij),ps(ij),dummy,dummy) |
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108 | ELSE |
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109 | C1=C0*(cos(2*lat)-1) |
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110 | |
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111 | !--- GROUND GEOPOTENTIAL |
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112 | phis(ij)=0. |
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113 | |
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114 | !--- GROUND TEMPERATURE |
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115 | Ts(ij) = GG+(Teq-GG)*EXP(-C1*(N/g)**2) |
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116 | |
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117 | !--- GROUND PRESSURE |
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118 | Ps(ij) = peq*EXP(C1/GG/Rd)*(Ts(ij)/Teq)**(1/kappa) |
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119 | |
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120 | |
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121 | r=radius*acos(sin(latc)*sin(lat)+cos(latc)*cos(lat)*cos(lon-lonc)) |
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122 | s(ij)= d**2/(d**2+r**2) |
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123 | END IF |
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124 | END DO |
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125 | END DO |
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126 | |
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127 | CALL compute_pression(ps,p,0) |
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128 | |
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129 | DO l=1,llm |
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130 | DO j=jj_begin,jj_end |
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131 | DO i=ii_begin,ii_end |
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132 | ij=(j-1)*iim+i |
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133 | pp=0.5*(p(ij,l+1)+p(ij,l)) ! full-layer pressure |
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134 | IF(use_dcmip_routine) THEN |
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135 | CALL xyz2lonlat(xyz_i(ij,:),lon,lat) |
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136 | CALL test3_gravity_wave(lon,lat,pp,dummy,0,dummy,dummy,dummy,T(ij,l),dummy,dummy,dummy,dummy) |
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137 | ELSE |
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138 | pspsk=(pp/ps(ij))**kappa |
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139 | p0psk=(Peq/ps(ij))**kappa |
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140 | thetab = Ts(ij)*p0psk / ( Ts(ij) / GG * ( pspsk-1) +1) ! background pot. temp. |
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141 | zz = -g/N**2*log( Ts(ij)/GG * (pspsk -1)+1) ! altitude |
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142 | thetap = dtheta *sin(2*Pi*zz/Lz) * s(ij) ! perturbation pot. temp. |
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143 | theta(ij,l) = thetab + thetap |
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144 | T(ij,l) = theta(ij,l)* ((pp/peq)**kappa) |
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145 | ! T(ij,l) = Ts(ij)*pspsk / ( Ts(ij) / GG * ( pspsk-1) +1) ! background temp. |
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146 | END IF |
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147 | ENDDO |
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148 | ENDDO |
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149 | ENDDO |
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150 | |
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151 | IF(use_dcmip_routine) THEN |
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152 | CALL compute_temperature2theta_rhodz(ps,T,theta_rhodz,0) |
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153 | ELSE |
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154 | CALL compute_temperature2theta_rhodz(ps,T,theta_rhodz,0) |
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155 | END IF |
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156 | |
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157 | pp=peq |
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158 | DO l=1,llm |
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159 | DO j=jj_begin-1,jj_end+1 |
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160 | DO i=ii_begin-1,ii_end+1 |
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161 | ij=(j-1)*iim+i |
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162 | IF(use_dcmip_routine) THEN |
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163 | CALL xyz2lonlat(xyz_e(ij+u_right,:),lon,lat) |
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164 | CALL test3_gravity_wave(lon,lat,pp,0.,0, & |
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165 | ulon(ij+u_right,l),ulat(ij+u_right,l),& |
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166 | dummy,dummy,dummy,dummy,dummy,dummy) |
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167 | CALL xyz2lonlat(xyz_e(ij+u_lup,:),lon,lat) |
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168 | CALL test3_gravity_wave(lon,lat,pp,0.,0,& |
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169 | ulon(ij+u_lup,l),ulat(ij+u_lup,l),& |
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170 | dummy,dummy,dummy,dummy,dummy,dummy) |
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171 | CALL xyz2lonlat(xyz_e(ij+u_ldown,:),lon,lat) |
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172 | CALL test3_gravity_wave(lon,lat,pp,0.,0,& |
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173 | ulon(ij+u_ldown,l),ulat(ij+u_ldown,l),& |
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174 | dummy,dummy,dummy,dummy,dummy,dummy) |
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175 | ELSE |
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176 | CALL xyz2lonlat(xyz_e(ij+u_right,:),lon,lat) |
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177 | ulon(ij+u_right,l)=u0*cos(lat) |
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178 | ulat(ij+u_right,l)=0 |
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179 | |
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180 | CALL xyz2lonlat(xyz_e(ij+u_lup,:),lon,lat) |
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181 | ulon(ij+u_lup,l)=u0*cos(lat) |
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182 | ulat(ij+u_lup,l)=0 |
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183 | |
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184 | CALL xyz2lonlat(xyz_e(ij+u_ldown,:),lon,lat) |
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185 | ulon(ij+u_ldown,l)=u0*cos(lat) |
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186 | ulat(ij+u_ldown,l)=0 |
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187 | END IF |
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188 | ENDDO |
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189 | ENDDO |
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190 | ENDDO |
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191 | |
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192 | CALL compute_wind_perp_from_lonlat_compound(ulon,ulat,u) |
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193 | |
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194 | END SUBROUTINE compute_etat0_DCMIP3 |
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195 | |
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196 | |
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197 | END MODULE etat0_DCMIP3_mod |
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