1 | MODULE nudging_mod |
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2 | USE icosa, ONLY : rstd |
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3 | USE grid_param, ONLY : llm, nqdyn |
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4 | USE omp_para, ONLY : ll_begin, ll_end |
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5 | USE domain_mod, ONLY : ndomain, assigned_domain |
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6 | USE dimensions, ONLY : swap_dimensions, u_right, u_lup, u_ldown |
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7 | USE dimensions, ONLY : iim, jjm, ij_begin_ext, ij_end_ext |
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8 | USE geometry, ONLY : swap_geometry |
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9 | USE field_mod |
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10 | IMPLICIT NONE |
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11 | SAVE |
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12 | PRIVATE |
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13 | ! nudging will be active outside a disc of radius 'radius' centered at 'center_lon', 'center lat'. |
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14 | REAL(rstd) :: center_lon, center_lat, nudging_radius, nudging_relaxation_time, & |
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15 | nudging_relaxation_time_in,nudging_relaxation_time_out |
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16 | !$OMP THREADPRIVATE(center_lon, center_lat, nudging_radius, nudging_relaxation_time,nudging_relaxation_time_in,nudging_relaxation_time_out) |
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17 | |
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18 | TYPE(t_field),POINTER :: f_relax_coef_e(:), f_target_ue(:), & |
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19 | f_relax_coef_i(:), f_target_theta_rhodz(:),f_target_ps(:) |
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20 | CHARACTER(LEN=255) :: guided_nudging_field |
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21 | INTEGER :: nudging_time |
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22 | |
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23 | PUBLIC :: init_guided, guided |
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24 | |
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25 | CONTAINS |
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26 | |
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27 | SUBROUTINE init_guided(f_u,f_theta_rhodz,f_ps) |
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28 | USE getin_mod, ONLY : getin |
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29 | USE math_const, ONLY : pi |
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30 | USE earth_const, ONLY : scale_factor |
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31 | TYPE(t_field),POINTER :: f_u(:)! initial condition |
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32 | TYPE(t_field),POINTER :: f_theta_rhodz(:)! initial condition |
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33 | TYPE(t_field),POINTER :: f_ps(:)! initial condition |
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34 | REAL(rstd), POINTER :: ue(:,:), target_ue(:,:), coef_e(:) |
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35 | REAL(rstd), POINTER :: theta_rhodz(:,:,:), target_theta_rhodz(:,:,:), coef_i(:) |
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36 | REAL(rstd), POINTER :: ps2(:), target_ps(:) |
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37 | INTEGER :: ind |
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38 | ! read DEF keys describing how to relax |
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39 | center_lon=0. |
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40 | CALL getin('nudging_center_lon', center_lon) |
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41 | center_lat=0. |
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42 | CALL getin('nudging_center_lat', center_lat) |
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43 | nudging_radius=0. |
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44 | CALL getin('nudging_radius', nudging_radius) |
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45 | nudging_radius = nudging_radius / scale_factor |
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46 | ! we should check that radius>0 |
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47 | |
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48 | nudging_time=0 |
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49 | CALL getin('nudging_time', nudging_time) |
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50 | nudging_time = nudging_time/scale_factor |
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51 | !nudging_time=0 |
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52 | |
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53 | nudging_relaxation_time_in = 0. |
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54 | nudging_relaxation_time_out = 0. |
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55 | CALL getin('nudging_relaxation_time_in', nudging_relaxation_time_in) |
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56 | CALL getin('nudging_relaxation_time_out', nudging_relaxation_time_out) |
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57 | nudging_relaxation_time_in = nudging_relaxation_time_in/scale_factor |
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58 | nudging_relaxation_time_out = nudging_relaxation_time_out/scale_factor |
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59 | IF(nudging_relaxation_time_in .EQ. 0. .AND. nudging_relaxation_time_out .EQ. 0.) THEN |
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60 | PRINT*," nudging_relaxation_time_in and nudging_relaxation_time_out values can not be 0. at the same time" |
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61 | ENDIF |
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62 | |
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63 | CALL getin("guided_nudging_field",guided_nudging_field) |
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64 | |
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65 | SELECT CASE(TRIM(guided_nudging_field)) |
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66 | CASE('wind','temperature','ps','wind_temperature','wind_temperature_ps') |
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67 | CALL allocate_field(f_relax_coef_e, field_u, type_real, name='nudging_coef_e') |
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68 | CALL allocate_field(f_target_ue, field_u, type_real, llm, name='nudging_target_e') |
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69 | CALL allocate_field(f_relax_coef_i, field_t, type_real, name='nudging_coef_i') |
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70 | CALL allocate_field(f_target_theta_rhodz, field_t, type_real, llm,nqdyn, name='nudging_target_theta') |
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71 | CALL allocate_field(f_target_ps, field_t, type_real, name='nudging_target_ps') |
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72 | CASE DEFAULT |
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73 | PRINT*,"Bad selector for varaible init_guided_nudging>",TRIM(guided_nudging_field) |
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74 | PRINT*,"options are <wind>, <temperature>,<ps>,<wind_temperature>,<wind_temperature_ps>" |
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75 | STOP |
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76 | END SELECT |
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77 | ! compute relax_coef and target_ue |
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78 | center_lon = center_lon * pi/180. |
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79 | center_lat = center_lat * pi/180. |
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80 | DO ind = 1 , ndomain |
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81 | IF (.NOT. assigned_domain(ind)) CYCLE |
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82 | CALL swap_dimensions(ind) |
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83 | CALL swap_geometry(ind) |
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84 | coef_e = f_relax_coef_e(ind) |
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85 | coef_i = f_relax_coef_i(ind) |
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86 | target_ue = f_target_ue(ind) |
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87 | ue = f_u(ind) |
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88 | target_theta_rhodz = f_target_theta_rhodz(ind) |
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89 | theta_rhodz = f_theta_rhodz(ind) |
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90 | target_ps = f_target_ps(ind) |
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91 | ps2 = f_ps(ind) |
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92 | CALL compute_relax_coef(coef_e, coef_i) |
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93 | CALL compute_target_u(ue, target_ue) |
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94 | CALL compute_target_center(theta_rhodz, target_theta_rhodz) |
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95 | CALL compute_target_center2(ps2, target_ps) |
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96 | END DO |
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97 | END SUBROUTINE init_guided |
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98 | |
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99 | !----------------------------- Compute relaxation coefficients ------------------------------ |
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100 | |
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101 | SUBROUTINE compute_relax_coef(coef_e, coef_i) |
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102 | USE geometry, ONLY : lon_e, lat_e, lon_i, lat_i |
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103 | REAL(rstd), INTENT(OUT) :: coef_e(iim*3*jjm), coef_i(iim*jjm) |
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104 | INTEGER :: l, ij |
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105 | DO ij=ij_begin_ext, ij_end_ext |
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106 | coef_e(ij+u_right) = relax_coef(lon_e(ij+u_right), lat_e(ij+u_right) ) |
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107 | coef_e(ij+u_lup) = relax_coef(lon_e(ij+u_lup), lat_e(ij+u_lup) ) |
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108 | coef_e(ij+u_ldown) = relax_coef(lon_e(ij+u_ldown), lat_e(ij+u_ldown) ) |
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109 | coef_i(ij) = relax_coef(lon_i(ij), lat_i(ij) ) |
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110 | END DO |
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111 | END SUBROUTINE compute_relax_coef |
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112 | |
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113 | FUNCTION relax_coef(lon,lat) |
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114 | USE spherical_geom_mod, ONLY : dist_lonlat |
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115 | USE time_mod!, ONLY : dt ! time step for a full RK step |
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116 | REAL(rstd), INTENT(IN) :: lon,lat |
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117 | REAL(rstd) :: relax_coef, dist, c |
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118 | ! NB : dist is computed on unit sphere |
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119 | IF(nudging_radius>0.) THEN |
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120 | CALL dist_lonlat(lon, lat, center_lon, center_lat, dist) |
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121 | c = tanh((1.-radius*dist/nudging_radius)*20.) ! 1 inside circle, -1 outside |
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122 | IF (c>0.99) c=1 |
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123 | IF (c<-0.99) c=-1 |
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124 | c = .5*(1.+c) ! rescale to [0,1] range ; ! 1 inside circle, 0 outside |
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125 | ELSE |
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126 | c = 0. |
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127 | END IF |
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128 | |
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129 | nudging_relaxation_time = c*nudging_relaxation_time_in + (1.-c)*nudging_relaxation_time_out |
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130 | relax_coef = 1. - dt/(dt + nudging_relaxation_time) |
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131 | END FUNCTION relax_coef |
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132 | |
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133 | !----------------------------- Copy initial condition as target ------------------------------ |
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134 | |
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135 | SUBROUTINE compute_target_u(ue, target_ue) |
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136 | REAL(rstd), INTENT(OUT) :: target_ue(iim*3*jjm,llm) |
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137 | REAL(rstd), INTENT(IN) :: ue(iim*3*jjm,llm) |
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138 | INTEGER :: l, ij |
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139 | DO l = ll_begin, ll_end |
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140 | DO ij=ij_begin_ext, ij_end_ext |
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141 | target_ue(ij+u_right,l)=ue(ij+u_right,l) |
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142 | target_ue(ij+u_lup,l)=ue(ij+u_lup,l) |
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143 | target_ue(ij+u_ldown,l)=ue(ij+u_ldown,l) |
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144 | END DO |
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145 | END DO |
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146 | END SUBROUTINE compute_target_u |
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147 | |
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148 | SUBROUTINE compute_target_center(theta_rhodz, target_theta_rhodz) |
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149 | REAL(rstd), INTENT(OUT) :: target_theta_rhodz(iim*jjm,llm,nqdyn) |
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150 | REAL(rstd), INTENT(IN) :: theta_rhodz(iim*jjm,llm,nqdyn) |
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151 | INTEGER :: l, ij, iq |
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152 | DO iq=1, nqdyn |
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153 | DO l = ll_begin, ll_end |
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154 | DO ij=ij_begin_ext, ij_end_ext |
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155 | target_theta_rhodz(ij,l,iq)=theta_rhodz(ij,l,iq) |
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156 | END DO |
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157 | END DO |
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158 | END DO |
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159 | END SUBROUTINE compute_target_center |
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160 | |
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161 | SUBROUTINE compute_target_center2(theta_rhodz, target_theta_rhodz) |
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162 | REAL(rstd), INTENT(OUT) :: target_theta_rhodz(iim*jjm,nqdyn) |
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163 | REAL(rstd), INTENT(IN) :: theta_rhodz(iim*jjm,nqdyn) |
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164 | INTEGER :: ij, iq |
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165 | DO iq=1, nqdyn |
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166 | DO ij=ij_begin_ext, ij_end_ext |
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167 | target_theta_rhodz(ij,iq)=theta_rhodz(ij,iq) |
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168 | END DO |
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169 | END DO |
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170 | END SUBROUTINE compute_target_center2 |
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171 | |
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172 | !----------------------------- Relax towards target ------------------------------ |
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173 | |
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174 | SUBROUTINE guided(tt, f_ps, f_theta_rhodz, f_u, f_q) |
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175 | USE xios_mod |
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176 | USE theta2theta_rhodz_mod |
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177 | USE wind_mod |
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178 | USE transfert_mod |
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179 | USE time_mod, ONLY : dt ! time step for a full RK step |
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180 | USE vertical_remap_mod |
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181 | USE compute_pression_mod, ONLY : pression_mid |
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182 | REAL(rstd), INTENT(IN):: tt |
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183 | TYPE(t_field),POINTER :: f_ps(:) |
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184 | TYPE(t_field),POINTER,SAVE :: f_pmid_target(:) |
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185 | TYPE(t_field),POINTER :: f_phis(:) |
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186 | TYPE(t_field),POINTER :: f_theta_rhodz(:) |
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187 | TYPE(t_field),POINTER :: f_u(:) |
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188 | TYPE(t_field),POINTER :: f_q(:) |
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189 | TYPE(t_field),POINTER, SAVE :: f_T_guided(:), f_ulon_guided(:), f_ulat_guided(:),f_T_guided_interp(:), & |
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190 | f_ulon_guided_interp(:),f_ulat_guided_interp(:),f_ps_guided(:) |
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191 | REAL(rstd), POINTER :: target_ue(:,:), ue(:,:), coef_e(:) |
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192 | REAL(rstd), POINTER :: target_theta_rhodz(:,:,:), theta_rhodz(:,:,:), coef_i(:) |
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193 | REAL(rstd), POINTER :: target_ps(:), ps2(:) |
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194 | INTEGER :: ind |
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195 | |
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196 | IF (abs(MOD(tt,REAL(nudging_time))-dt) < 1.0D-2) THEN |
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197 | CALL allocate_field(f_ps_guided, field_t, type_real, name='nudging_ps') |
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198 | CALL xios_read_field("ps_guided_read",f_ps_guided) |
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199 | CALL transfert_request(f_ps_guided,req_i0) |
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200 | CALL transfert_request(f_ps_guided,req_i1) |
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201 | CALL allocate_field(f_T_guided, field_t, type_real, llm, name='nudging_T') |
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202 | CALL allocate_field(f_T_guided_interp, field_t, type_real, llm, name='nudging_T') |
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203 | CALL allocate_field(f_ulon_guided_interp, field_t, type_real, llm, name='nudging_T') |
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204 | CALL allocate_field(f_ulat_guided_interp, field_t, type_real, llm, name='nudging_T') |
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205 | CALL allocate_field(f_ulon_guided, field_t, type_real, llm, name='nudging_ulon') |
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206 | CALL allocate_field(f_ulat_guided, field_t, type_real, llm, name='nudging_ulat') |
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207 | CALL allocate_field(f_pmid_target,field_t,type_real,llm,name='target_pressure') |
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208 | CALL xios_read_field("T_guided_read",f_T_guided) |
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209 | CALL pression_mid(f_ps, f_pmid_target) |
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210 | CALL vertical_remap_extdata(f_T_guided,f_pmid_target,f_T_guided_interp) |
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211 | CALL transfert_request(f_T_guided,req_i0) |
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212 | CALL transfert_request(f_T_guided_interp,req_i0) |
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213 | CALL transfert_request(f_T_guided,req_i1) |
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214 | CALL transfert_request(f_T_guided_interp,req_i1) |
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215 | CALL temperature2theta_rhodz(f_ps,f_T_guided_interp,f_target_theta_rhodz) |
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216 | CALL xios_read_field("ulon_guided_read",f_ulon_guided) |
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217 | CALL xios_read_field("ulat_guided_read",f_ulat_guided) |
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218 | CALL vertical_remap_extdata(f_ulon_guided,f_pmid_target,f_ulon_guided_interp) |
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219 | CALL vertical_remap_extdata(f_ulat_guided,f_pmid_target,f_ulat_guided_interp) |
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220 | CALL transfert_request(f_ulon_guided,req_i0) |
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221 | CALL transfert_request(f_ulon_guided_interp,req_i0) |
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222 | CALL transfert_request(f_ulat_guided,req_i0) |
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223 | CALL transfert_request(f_ulat_guided_interp,req_i0) |
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224 | CALL transfert_request(f_ulon_guided,req_i1) |
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225 | CALL transfert_request(f_ulon_guided_interp,req_i1) |
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226 | CALL transfert_request(f_ulat_guided,req_i1) |
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227 | CALL transfert_request(f_ulat_guided_interp,req_i1) |
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228 | !CALL xios_write_field("ulat_guided_out",f_ulat_guided) |
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229 | CALL xios_write_field("ulat_guided_out",f_T_guided_interp) ! FIX |
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230 | CALL xios_write_field("ulon_guided_out",f_ulon_guided) |
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231 | CALL xios_write_field("T_guided_out",f_T_guided) |
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232 | CALL xios_write_field("PS_guided_out",f_ps_guided) |
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233 | CALL ulonlat2un(f_ulon_guided_interp, f_ulat_guided,f_target_ue) |
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234 | CALL deallocate_field(f_T_guided) |
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235 | CALL deallocate_field(f_T_guided_interp) |
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236 | CALL deallocate_field(f_ulon_guided) |
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237 | CALL deallocate_field(f_ulon_guided_interp) |
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238 | CALL deallocate_field(f_ulat_guided) |
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239 | CALL deallocate_field(f_ulat_guided_interp) |
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240 | CALL deallocate_field(f_pmid_target) |
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241 | ENDIF |
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242 | |
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243 | |
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244 | DO ind = 1 , ndomain |
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245 | IF (.NOT. assigned_domain(ind)) CYCLE |
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246 | CALL swap_dimensions(ind) |
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247 | CALL swap_geometry(ind) |
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248 | |
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249 | SELECT CASE(TRIM(guided_nudging_field)) |
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250 | CASE ('wind') |
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251 | coef_e = f_relax_coef_e(ind) |
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252 | target_ue = f_target_ue(ind) |
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253 | ue = f_u(ind) |
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254 | CALL compute_guided_u(coef_e, target_ue, ue) |
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255 | CASE ('temperature') |
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256 | coef_i = f_relax_coef_i(ind) |
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257 | target_theta_rhodz = f_target_theta_rhodz(ind) |
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258 | theta_rhodz = f_theta_rhodz(ind) |
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259 | CALL compute_guided_center(coef_i, target_theta_rhodz, theta_rhodz) |
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260 | CASE ('ps') |
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261 | coef_i = f_relax_coef_i(ind) |
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262 | target_ps = f_ps_guided(ind) |
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263 | ps2 = f_ps(ind) |
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264 | CALL compute_guided_center2(coef_i, target_ps, ps2) |
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265 | CASE ('wind_temperature') |
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266 | coef_e = f_relax_coef_e(ind) |
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267 | target_ue = f_target_ue(ind) |
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268 | ue = f_u(ind) |
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269 | CALL compute_guided_u(coef_e, target_ue, ue) |
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270 | coef_i = f_relax_coef_i(ind) |
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271 | target_theta_rhodz = f_target_theta_rhodz(ind) |
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272 | theta_rhodz = f_theta_rhodz(ind) |
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273 | CALL compute_guided_center(coef_i, target_theta_rhodz, theta_rhodz) |
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274 | CASE ('wind_temperature_ps') |
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275 | coef_e = f_relax_coef_e(ind) |
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276 | target_ue = f_target_ue(ind) |
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277 | ue = f_u(ind) |
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278 | CALL compute_guided_u(coef_e, target_ue, ue) |
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279 | coef_i = f_relax_coef_i(ind) |
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280 | target_theta_rhodz = f_target_theta_rhodz(ind) |
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281 | theta_rhodz = f_theta_rhodz(ind) |
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282 | CALL compute_guided_center(coef_i, target_theta_rhodz, theta_rhodz) |
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283 | target_ps = f_ps_guided(ind) |
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284 | ps2 = f_ps(ind) |
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285 | CALL compute_guided_center2(coef_i, target_ps, ps2) |
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286 | CASE DEFAULT |
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287 | PRINT*,"Bad selector for varaible <guided_nudging_field>",TRIM(guided_nudging_field) |
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288 | PRINT*,"options are <wind>, <temperature>,<ps>,<wind_temperature>,<wind_temperature_ps>" |
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289 | STOP |
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290 | END SELECT |
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291 | END DO |
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292 | |
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293 | END SUBROUTINE guided |
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294 | |
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295 | SUBROUTINE compute_guided_u(coef_e, target_ue, ue) |
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296 | REAL(rstd), INTENT(IN) :: coef_e(iim*3*jjm) |
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297 | REAL(rstd), INTENT(IN) :: target_ue(iim*3*jjm,llm) |
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298 | REAL(rstd), INTENT(INOUT) :: ue(iim*3*jjm,llm) |
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299 | INTEGER :: l, ij |
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300 | DO l = ll_begin, ll_end |
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301 | DO ij=ij_begin_ext, ij_end_ext |
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302 | ue(ij+u_right,l) = ue(ij+u_right,l)*coef_e(ij+u_right) + & |
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303 | target_ue(ij+u_right,l)*(1.-coef_e(ij+u_right)) |
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304 | ue(ij+u_lup,l) = ue(ij+u_lup,l)*coef_e(ij+u_lup) + & |
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305 | target_ue(ij+u_lup,l)*(1.-coef_e(ij+u_lup)) |
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306 | ue(ij+u_ldown,l) = ue(ij+u_ldown,l)*coef_e(ij+u_ldown) + & |
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307 | target_ue(ij+u_ldown,l)*(1.-coef_e(ij+u_ldown)) |
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308 | END DO |
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309 | END DO |
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310 | END SUBROUTINE compute_guided_u |
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311 | |
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312 | SUBROUTINE compute_guided_center(coef_i, target_theta_rhodz, theta_rhodz) |
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313 | REAL(rstd), INTENT(IN) :: coef_i(iim*jjm) |
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314 | REAL(rstd), INTENT(IN) :: target_theta_rhodz(iim*jjm,llm,nqdyn) |
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315 | REAL(rstd), INTENT(INOUT) :: theta_rhodz(iim*jjm,llm,nqdyn) |
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316 | INTEGER :: l, ij, iq |
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317 | DO iq=1, nqdyn |
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318 | DO l = ll_begin, ll_end |
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319 | DO ij=ij_begin_ext, ij_end_ext |
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320 | theta_rhodz(ij,l,iq) = theta_rhodz(ij,l,iq)*coef_i(ij) + & |
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321 | target_theta_rhodz(ij,l,iq)*(1.-coef_i(ij)) |
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322 | END DO |
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323 | END DO |
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324 | END DO |
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325 | END SUBROUTINE compute_guided_center |
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326 | |
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327 | SUBROUTINE compute_guided_center2(coef_i, target_theta_rhodz, theta_rhodz) |
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328 | REAL(rstd), INTENT(IN) :: coef_i(iim*jjm) |
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329 | REAL(rstd), INTENT(IN) :: target_theta_rhodz(iim*jjm,nqdyn) |
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330 | REAL(rstd), INTENT(INOUT) :: theta_rhodz(iim*jjm,nqdyn) |
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331 | INTEGER :: ij, iq |
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332 | DO iq=1, nqdyn |
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333 | DO ij=ij_begin_ext, ij_end_ext |
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334 | theta_rhodz(ij,iq) = theta_rhodz(ij,iq)*coef_i(ij) + & |
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335 | target_theta_rhodz(ij,iq)*(1.-coef_i(ij)) |
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336 | END DO |
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337 | END DO |
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338 | END SUBROUTINE compute_guided_center2 |
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339 | |
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340 | END MODULE nudging_mod |
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