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