1 | MODULE guided_ncar_mod |
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2 | USE icosa |
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3 | PRIVATE |
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4 | |
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5 | INTEGER,SAVE :: case_wind |
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6 | !$OMP THREADPRIVATE(case_wind) |
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7 | |
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8 | REAL(rstd), PARAMETER :: alpha=0.0 ! tilt of solid-body rotation |
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9 | REAL(rstd), PARAMETER :: tau_hadley=daysec, tau = 12*daysec ! 12 days ! see p. 16 |
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10 | REAL(rstd), PARAMETER :: w0_deform = 23000*pi/tau, b=0.2, ptop=25494.4 ! see p. 16 |
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11 | REAL(rstd), PARAMETER :: u0_hadley=40.,w0_hadley=0.15 ,ztop= 12000. |
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12 | INTEGER, PARAMETER :: K_hadley=5 |
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13 | |
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14 | PUBLIC init_guided, guided |
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15 | |
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16 | CONTAINS |
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17 | |
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18 | SUBROUTINE init_guided |
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19 | IMPLICIT NONE |
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20 | CHARACTER(LEN=255) :: wind |
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21 | wind='deform' |
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22 | CALL getin('dcmip1_wind',wind) |
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23 | SELECT CASE(TRIM(wind)) |
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24 | CASE('solid') |
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25 | case_wind=0 |
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26 | CASE('deform') |
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27 | case_wind=1 |
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28 | CASE('hadley') |
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29 | case_wind=2 |
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30 | CASE DEFAULT |
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31 | PRINT*,'Bad selector for variable ncar_adv_wind : <', TRIM(wind),'> options are <solid>, <deform>, <hadley>' |
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32 | END SELECT |
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33 | END SUBROUTINE init_guided |
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34 | |
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35 | SUBROUTINE guided(tt, f_ps, f_theta_rhodz, f_u, f_q) |
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36 | USE icosa |
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37 | IMPLICIT NONE |
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38 | REAL(rstd), INTENT(IN):: tt |
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39 | TYPE(t_field),POINTER :: f_ps(:) |
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40 | TYPE(t_field),POINTER :: f_phis(:) |
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41 | TYPE(t_field),POINTER :: f_theta_rhodz(:) |
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42 | TYPE(t_field),POINTER :: f_u(:) |
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43 | TYPE(t_field),POINTER :: f_q(:) |
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44 | |
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45 | REAL(rstd),POINTER :: ue(:,:) |
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46 | INTEGER :: ind |
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47 | |
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48 | DO ind = 1 , ndomain |
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49 | IF (.NOT. assigned_domain(ind)) CYCLE |
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50 | CALL swap_dimensions(ind) |
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51 | CALL swap_geometry(ind) |
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52 | ue = f_u(ind) |
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53 | CALL wind_profile(tt,ue) |
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54 | END DO |
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55 | |
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56 | END SUBROUTINE guided |
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57 | |
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58 | |
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59 | SUBROUTINE wind_profile(tt,ue) |
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60 | USE icosa |
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61 | USE disvert_mod |
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62 | IMPLICIT NONE |
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63 | REAL(rstd),INTENT(IN) :: tt ! current time |
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64 | REAL(rstd),INTENT(OUT) :: ue(iim*3*jjm,llm) |
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65 | REAL(rstd) :: lon, lat |
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66 | REAL(rstd) :: nx(3),n_norm,Velocity(3,llm) |
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67 | REAL(rstd) :: rr1,rr2,bb,cc,aa,hmx |
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68 | REAL(rstd) :: v1(3),v2(3),ny(3) |
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69 | INTEGER :: i,j,n,l |
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70 | REAL(rstd) :: pitbytau,kk, pr, zr, u0, u1, v0 |
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71 | |
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72 | pitbytau = pi*tt/tau |
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73 | kk = 10*radius/tau |
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74 | u0 = 2*pi*radius/tau ! for solid-body rotation |
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75 | !--------------------------------------------------------- |
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76 | DO l = 1,llm |
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77 | pr = presnivs(l) |
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78 | zr = -kappa*cpp*ncar_T0/g*log(pr/ncar_p0) ! reciprocal of (1) p. 13, isothermal atmosphere |
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79 | u1 = w0_deform*radius/b/ptop*cos(2*pitbytau)*(exp((ptop-pr)/b/ptop)-exp((pr-ncar_p0)/b/ptop)) |
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80 | v0 = -radius*w0_hadley*pi/(5.0*ztop)*(ncar_p0/pr)*cos(pi*zr/ztop)*cos(pi*tt/tau_hadley) ! for Hadley cell |
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81 | |
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82 | DO j=jj_begin-1,jj_end+1 |
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83 | DO i=ii_begin-1,ii_end+1 |
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84 | n=(j-1)*iim+i |
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85 | CALL compute_velocity(xyz_e(n+u_right,:),l,velocity(:,l)) |
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86 | CALL cross_product2(xyz_v(n+z_rdown,:)/radius,xyz_v(n+z_rup,:)/radius,nx) |
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87 | ue(n+u_right,l)=1e-10 |
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88 | n_norm=sqrt(sum(nx(:)**2)) |
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89 | IF (n_norm>1e-30) THEN |
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90 | nx=-nx/n_norm*ne(n,right) |
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91 | ue(n+u_right,l)=sum(nx(:)*velocity(:,l)) |
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92 | IF (ABS(ue(n+u_right,l))<1e-100) PRINT *,"ue(n+u_right)==0",i,j,velocity(:,1) |
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93 | ENDIF |
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94 | |
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95 | CALL compute_velocity(xyz_e(n+u_lup,:),l,velocity(:,l)) |
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96 | CALL cross_product2(xyz_v(n+z_up,:)/radius,xyz_v(n+z_lup,:)/radius,nx) |
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97 | |
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98 | ue(n+u_lup,l)=1e-10 |
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99 | n_norm=sqrt(sum(nx(:)**2)) |
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100 | IF (n_norm>1e-30) THEN |
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101 | nx=-nx/n_norm*ne(n,lup) |
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102 | ue(n+u_lup,l)=sum(nx(:)*velocity(:,l)) |
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103 | ENDIF |
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104 | |
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105 | CALL compute_velocity(xyz_e(n+u_ldown,:),l,velocity(:,l)) |
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106 | CALL cross_product2(xyz_v(n+z_ldown,:)/radius,xyz_v(n+z_down,:)/radius,nx) |
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107 | |
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108 | ue(n+u_ldown,l)=1e-10 |
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109 | n_norm=sqrt(sum(nx(:)**2)) |
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110 | IF (n_norm>1e-30) THEN |
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111 | nx=-nx/n_norm*ne(n,ldown) |
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112 | ue(n+u_ldown,l)=sum(nx(:)*velocity(:,l)) |
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113 | IF (ABS(ue(n+u_ldown,l))<1e-100) PRINT *,"ue(n+u_ldown)==0",i,j |
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114 | ENDIF |
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115 | ENDDO |
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116 | ENDDO |
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117 | END DO |
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118 | |
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119 | CONTAINS |
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120 | |
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121 | SUBROUTINE compute_velocity(x,l,velocity) |
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122 | IMPLICIT NONE |
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123 | REAL(rstd),INTENT(IN) :: x(3) |
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124 | INTEGER,INTENT(IN)::l |
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125 | REAL(rstd),INTENT(OUT) :: velocity(3) |
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126 | REAL(rstd) :: e_lat(3), e_lon(3) |
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127 | REAL(rstd) :: lon,lat |
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128 | REAL(rstd) :: u,v |
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129 | |
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130 | CALL xyz2lonlat(x/radius,lon,lat) |
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131 | e_lat(1) = -cos(lon)*sin(lat) |
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132 | e_lat(2) = -sin(lon)*sin(lat) |
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133 | e_lat(3) = cos(lat) |
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134 | |
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135 | e_lon(1) = -sin(lon) |
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136 | e_lon(2) = cos(lon) |
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137 | e_lon(3) = 0 |
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138 | |
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139 | u = 0.0 ; v = 0.0 |
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140 | |
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141 | SELECT CASE(case_wind) |
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142 | CASE(0) ! Solid-body rotation |
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143 | u=u0*(cos(lat)*cos(alpha)+sin(lat)*sin(alpha)*cos(lon)) |
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144 | v=-u0*sin(lon)*sin(alpha) |
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145 | CASE(1) ! 3D Deformational flow - |
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146 | lon = lon-2*pitbytau |
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147 | u = kk*sin(lon)*sin(lon)*sin(2*lat)*cos(pitbytau)+ u0*cos(lat) |
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148 | u = u + u1*cos(lon)*cos(lat)**2 |
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149 | v = kk*sin(2*lon)*cos(lat)*cos(pitbytau) |
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150 | CASE(2) ! Hadley-like flow |
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151 | u = u0_hadley*cos(lat) |
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152 | v = v0*cos(lat)*sin(5.*lat) ! Eq. 37 p. 19 |
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153 | CASE DEFAULT |
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154 | PRINT*,"not valid choice of wind" |
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155 | END SELECT |
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156 | |
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157 | Velocity(:)=(u*e_lon(:)+v*e_lat(:)+1e-50) |
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158 | |
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159 | END SUBROUTINE compute_velocity |
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160 | |
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161 | END SUBROUTINE wind_profile |
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162 | |
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163 | |
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164 | END MODULE guided_ncar_mod |
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