[17] | 1 | MODULE advect_tracer_mod |
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[19] | 2 | USE icosa |
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[138] | 3 | IMPLICIT NONE |
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[17] | 4 | PRIVATE |
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[22] | 5 | |
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| 6 | TYPE(t_field),POINTER :: f_normal(:) |
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| 7 | TYPE(t_field),POINTER :: f_tangent(:) |
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| 8 | TYPE(t_field),POINTER :: f_gradq3d(:) |
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[137] | 9 | TYPE(t_field),POINTER :: f_cc(:) ! starting point of backward-trajectory (Miura approach) |
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[148] | 10 | TYPE(t_field),POINTER :: f_one_over_sqrt_leng(:) |
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| 11 | |
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[136] | 12 | REAL(rstd), PARAMETER :: pente_max=2.0 ! for vlz |
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| 13 | |
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| 14 | PUBLIC init_advect_tracer, advect_tracer |
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| 15 | |
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[17] | 16 | CONTAINS |
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[22] | 17 | |
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[98] | 18 | SUBROUTINE init_advect_tracer |
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[22] | 19 | USE advect_mod |
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| 20 | REAL(rstd),POINTER :: tangent(:,:) |
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| 21 | REAL(rstd),POINTER :: normal(:,:) |
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[148] | 22 | REAL(rstd),POINTER :: one_over_sqrt_leng(:) |
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[23] | 23 | INTEGER :: ind |
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[22] | 24 | |
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[138] | 25 | CALL allocate_field(f_normal,field_u,type_real,3, name='normal') |
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| 26 | CALL allocate_field(f_tangent,field_u,type_real,3, name='tangent') |
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| 27 | CALL allocate_field(f_gradq3d,field_t,type_real,llm,3, name='gradq3d') |
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| 28 | CALL allocate_field(f_cc,field_u,type_real,llm,3, name='cc') |
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[148] | 29 | CALL allocate_field(f_one_over_sqrt_leng,field_t,type_real, name='one_over_sqrt_leng') |
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[22] | 30 | |
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| 31 | DO ind=1,ndomain |
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| 32 | CALL swap_dimensions(ind) |
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| 33 | CALL swap_geometry(ind) |
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| 34 | normal=f_normal(ind) |
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| 35 | tangent=f_tangent(ind) |
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[148] | 36 | one_over_sqrt_leng=f_one_over_sqrt_leng(ind) |
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| 37 | CALL init_advect(normal,tangent,one_over_sqrt_leng) |
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[22] | 38 | END DO |
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| 39 | |
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[17] | 40 | END SUBROUTINE init_advect_tracer |
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[22] | 41 | |
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[136] | 42 | SUBROUTINE advect_tracer(f_hfluxt, f_wfluxt,f_u, f_q,f_rhodz) |
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[22] | 43 | USE advect_mod |
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[136] | 44 | USE mpipara |
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[145] | 45 | USE trace |
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[146] | 46 | USE write_field |
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[22] | 47 | IMPLICIT NONE |
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[145] | 48 | |
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[136] | 49 | TYPE(t_field),POINTER :: f_hfluxt(:) ! time-integrated horizontal mass flux |
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| 50 | TYPE(t_field),POINTER :: f_wfluxt(:) ! time-integrated vertical mass flux |
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| 51 | TYPE(t_field),POINTER :: f_u(:) ! velocity (for back-trajectories) |
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| 52 | TYPE(t_field),POINTER :: f_q(:) ! tracer |
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| 53 | TYPE(t_field),POINTER :: f_rhodz(:) ! mass field at beginning of macro time step |
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[17] | 54 | |
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[148] | 55 | REAL(rstd),POINTER :: q(:,:,:), normal(:,:), tangent(:,:), one_over_sqrt_leng(:), gradq3d(:,:,:), cc(:,:,:) |
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[136] | 56 | REAL(rstd),POINTER :: hfluxt(:,:), wfluxt(:,:) |
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| 57 | REAL(rstd),POINTER :: rhodz(:,:), u(:,:) |
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[138] | 58 | INTEGER :: ind,k |
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[17] | 59 | |
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[145] | 60 | CALL trace_start("advect_tracer") |
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| 61 | |
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[146] | 62 | CALL transfert_request(f_u,req_e1_vect) |
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[138] | 63 | ! CALL transfert_request(f_hfluxt,req_e1) ! BUG : This (unnecessary) transfer makes the computation go wrong |
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| 64 | CALL transfert_request(f_wfluxt,req_i1) |
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[136] | 65 | CALL transfert_request(f_q,req_i1) |
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[138] | 66 | CALL transfert_request(f_rhodz,req_i1) |
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[136] | 67 | |
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[149] | 68 | ! IF (is_mpi_root) PRINT *, 'Advection scheme' |
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[17] | 69 | |
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[138] | 70 | ! DO ind=1,ndomain |
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| 71 | ! CALL swap_dimensions(ind) |
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| 72 | ! CALL swap_geometry(ind) |
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| 73 | ! normal = f_normal(ind) |
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| 74 | ! tangent = f_tangent(ind) |
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| 75 | ! cc = f_cc(ind) |
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| 76 | ! u = f_u(ind) |
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| 77 | ! q = f_q(ind) |
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| 78 | ! rhodz = f_rhodz(ind) |
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| 79 | ! hfluxt = f_hfluxt(ind) |
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| 80 | ! wfluxt = f_wfluxt(ind) |
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| 81 | ! gradq3d = f_gradq3d(ind) |
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| 82 | ! |
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| 83 | ! ! 1/2 vertical transport |
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| 84 | ! DO k = 1, nqtot |
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| 85 | ! CALL vlz(k==nqtot,0.5, wfluxt,rhodz,q(:,:,k)) |
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| 86 | ! END DO |
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| 87 | ! |
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| 88 | ! ! horizontal transport |
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| 89 | ! CALL compute_backward_traj(tangent,normal,u,0.5*dt*itau_adv, cc) |
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| 90 | ! DO k = 1,nqtot |
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| 91 | ! CALL compute_gradq3d(q(:,:,k),gradq3d) |
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| 92 | ! CALL compute_advect_horiz(k==nqtot,hfluxt,cc,gradq3d, rhodz,q(:,:,k)) |
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| 93 | ! END DO |
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| 94 | ! |
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| 95 | ! ! 1/2 vertical transport |
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| 96 | ! DO k = 1,nqtot |
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| 97 | ! CALL vlz(k==nqtot, 0.5,wfluxt,rhodz, q(:,:,k)) |
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| 98 | ! END DO |
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| 99 | ! END DO |
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| 100 | |
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| 101 | ! 1/2 vertical transport + back-trajectories |
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[22] | 102 | DO ind=1,ndomain |
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[17] | 103 | CALL swap_dimensions(ind) |
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| 104 | CALL swap_geometry(ind) |
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[138] | 105 | normal = f_normal(ind) |
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| 106 | tangent = f_tangent(ind) |
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| 107 | cc = f_cc(ind) |
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| 108 | u = f_u(ind) |
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[136] | 109 | q = f_q(ind) |
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| 110 | rhodz = f_rhodz(ind) |
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| 111 | wfluxt = f_wfluxt(ind) |
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[148] | 112 | |
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[138] | 113 | DO k = 1, nqtot |
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[148] | 114 | CALL vlz(k==nqtot,0.5, wfluxt,rhodz,q(:,:,k),1) |
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[138] | 115 | END DO |
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[148] | 116 | |
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[138] | 117 | CALL compute_backward_traj(tangent,normal,u,0.5*dt*itau_adv, cc) |
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[22] | 118 | END DO |
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[17] | 119 | |
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[148] | 120 | ! CALL transfert_request(f_q,req_i1) ! necessary ? |
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| 121 | ! CALL transfert_request(f_rhodz,req_i1) ! necessary ? |
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[17] | 122 | |
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[138] | 123 | ! horizontal transport - split in two to place transfer of gradq3d |
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[17] | 124 | |
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[136] | 125 | DO k = 1, nqtot |
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[138] | 126 | DO ind=1,ndomain |
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| 127 | CALL swap_dimensions(ind) |
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| 128 | CALL swap_geometry(ind) |
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| 129 | q = f_q(ind) |
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| 130 | gradq3d = f_gradq3d(ind) |
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[148] | 131 | one_over_sqrt_leng=f_one_over_sqrt_leng(ind) |
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| 132 | CALL compute_gradq3d(q(:,:,k),one_over_sqrt_leng,gradq3d) |
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[138] | 133 | END DO |
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[17] | 134 | |
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[138] | 135 | CALL transfert_request(f_gradq3d,req_i1) |
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[17] | 136 | |
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[148] | 137 | |
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| 138 | |
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[138] | 139 | DO ind=1,ndomain |
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| 140 | CALL swap_dimensions(ind) |
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| 141 | CALL swap_geometry(ind) |
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| 142 | cc = f_cc(ind) |
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| 143 | q = f_q(ind) |
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| 144 | rhodz = f_rhodz(ind) |
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| 145 | hfluxt = f_hfluxt(ind) |
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| 146 | gradq3d = f_gradq3d(ind) |
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| 147 | CALL compute_advect_horiz(k==nqtot,hfluxt,cc,gradq3d, rhodz,q(:,:,k)) |
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| 148 | END DO |
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| 149 | END DO |
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[146] | 150 | |
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[148] | 151 | ! CALL transfert_request(f_q,req_i1) ! necessary ? |
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| 152 | ! CALL transfert_request(f_rhodz,req_i1) ! necessary ? |
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[146] | 153 | |
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[136] | 154 | ! 1/2 vertical transport |
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[138] | 155 | DO ind=1,ndomain |
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| 156 | CALL swap_dimensions(ind) |
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| 157 | CALL swap_geometry(ind) |
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| 158 | q = f_q(ind) |
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| 159 | rhodz = f_rhodz(ind) |
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| 160 | wfluxt = f_wfluxt(ind) |
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| 161 | DO k = 1,nqtot |
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[148] | 162 | CALL vlz(k==nqtot, 0.5,wfluxt,rhodz, q(:,:,k),0) |
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[138] | 163 | END DO |
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[136] | 164 | END DO |
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[138] | 165 | |
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[146] | 166 | CALL trace_end("advect_tracer") |
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| 167 | |
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[138] | 168 | END SUBROUTINE advect_tracer |
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| 169 | |
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[148] | 170 | SUBROUTINE vlz(update_mass, fac,wfluxt,mass, q, halo) |
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[136] | 171 | ! |
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| 172 | ! Auteurs: P.Le Van, F.Hourdin, F.Forget, T. Dubos |
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| 173 | ! |
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| 174 | ! ******************************************************************** |
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| 175 | ! Update tracers using vertical mass flux only |
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| 176 | ! Van Leer scheme with minmod limiter |
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| 177 | ! wfluxt >0 for upward transport |
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| 178 | ! ******************************************************************** |
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[148] | 179 | USE trace |
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[22] | 180 | IMPLICIT NONE |
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[136] | 181 | LOGICAL, INTENT(IN) :: update_mass |
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| 182 | REAL(rstd), INTENT(IN) :: fac, wfluxt(iim*jjm,llm+1) ! vertical mass flux |
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| 183 | REAL(rstd), INTENT(INOUT) :: mass(iim*jjm,llm) |
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| 184 | REAL(rstd), INTENT(INOUT) :: q(iim*jjm,llm) |
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[148] | 185 | INTEGER, INTENT(IN) :: halo |
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[22] | 186 | |
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[136] | 187 | REAL(rstd) :: dq(iim*jjm,llm), & ! increase of q |
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| 188 | dzqw(iim*jjm,llm), & ! vertical finite difference of q |
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| 189 | adzqw(iim*jjm,llm), & ! abs(dzqw) |
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| 190 | dzq(iim*jjm,llm), & ! limited slope of q |
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| 191 | wq(iim*jjm,llm+1) ! time-integrated flux of q |
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| 192 | REAL(rstd) :: dzqmax, newmass, sigw, qq, w |
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| 193 | INTEGER :: i,ij,l,j |
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[22] | 194 | |
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[148] | 195 | CALL trace_start("vlz") |
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| 196 | |
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[136] | 197 | ! finite difference of q |
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[22] | 198 | DO l=2,llm |
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[148] | 199 | DO j=jj_begin-halo,jj_end+halo |
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| 200 | DO i=ii_begin-halo,ii_end+halo |
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[22] | 201 | ij=(j-1)*iim+i |
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[136] | 202 | dzqw(ij,l)=q(ij,l)-q(ij,l-1) |
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[22] | 203 | adzqw(ij,l)=abs(dzqw(ij,l)) |
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| 204 | ENDDO |
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| 205 | ENDDO |
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| 206 | ENDDO |
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| 207 | |
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[136] | 208 | ! minmod-limited slope of q |
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| 209 | ! dzq = slope*dz, i.e. the reconstructed q varies by dzq inside level l |
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[22] | 210 | DO l=2,llm-1 |
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[148] | 211 | DO j=jj_begin-halo,jj_end+halo |
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| 212 | DO i=ii_begin-halo,ii_end+halo |
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[22] | 213 | ij=(j-1)*iim+i |
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| 214 | IF(dzqw(ij,l)*dzqw(ij,l+1).gt.0.) THEN |
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[136] | 215 | dzq(ij,l) = 0.5*( dzqw(ij,l)+dzqw(ij,l+1) ) |
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| 216 | dzqmax = pente_max * min( adzqw(ij,l),adzqw(ij,l+1) ) |
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| 217 | dzq(ij,l) = sign( min(abs(dzq(ij,l)),dzqmax) , dzq(ij,l) ) ! NB : sign(a,b)=a*sign(b) |
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[22] | 218 | ELSE |
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[17] | 219 | dzq(ij,l)=0. |
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[22] | 220 | ENDIF |
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| 221 | ENDDO |
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| 222 | ENDDO |
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| 223 | ENDDO |
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[17] | 224 | |
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[136] | 225 | ! 0 slope in top and bottom layers |
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[148] | 226 | DO j=jj_begin-halo,jj_end+halo |
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| 227 | DO i=ii_begin-halo,ii_end+halo |
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[136] | 228 | ij=(j-1)*iim+i |
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| 229 | dzq(ij,1)=0. |
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| 230 | dzq(ij,llm)=0. |
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[22] | 231 | ENDDO |
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| 232 | ENDDO |
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[17] | 233 | |
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[136] | 234 | ! sigw = fraction of mass that leaves level l/l+1 |
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| 235 | ! then amount of q leaving level l/l+1 = wq = w * qq |
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[22] | 236 | DO l = 1,llm-1 |
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[148] | 237 | DO j=jj_begin-halo,jj_end+halo |
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| 238 | DO i=ii_begin-halo,ii_end+halo |
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[17] | 239 | ij=(j-1)*iim+i |
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[138] | 240 | w = fac*wfluxt(ij,l+1) |
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| 241 | IF(w>0.) THEN ! upward transport, upwind side is at level l |
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| 242 | sigw = w/mass(ij,l) |
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| 243 | qq = q(ij,l)+0.5*(1.-sigw)*dzq(ij,l) ! qq = q if sigw=1 , qq = q+dzq/2 if sigw=0 |
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| 244 | ELSE ! downward transport, upwind side is at level l+1 |
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[136] | 245 | sigw = w/mass(ij,l+1) |
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[138] | 246 | qq = q(ij,l+1)-0.5*(1.+sigw)*dzq(ij,l+1) ! qq = q if sigw=-1 , qq = q-dzq/2 if sigw=0 |
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[22] | 247 | ENDIF |
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[138] | 248 | wq(ij,l+1) = w*qq |
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[22] | 249 | ENDDO |
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| 250 | ENDDO |
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| 251 | END DO |
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[136] | 252 | ! wq = 0 at top and bottom |
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[148] | 253 | DO j=jj_begin-halo,jj_end+halo |
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| 254 | DO i=ii_begin-halo,ii_end+halo |
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[22] | 255 | ij=(j-1)*iim+i |
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| 256 | wq(ij,llm+1)=0. |
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| 257 | wq(ij,1)=0. |
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| 258 | ENDDO |
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| 259 | END DO |
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[17] | 260 | |
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[136] | 261 | ! update q, mass is updated only after all q's have been updated |
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[22] | 262 | DO l=1,llm |
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[148] | 263 | DO j=jj_begin-halo,jj_end+halo |
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| 264 | DO i=ii_begin-halo,ii_end+halo |
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[17] | 265 | ij=(j-1)*iim+i |
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[136] | 266 | newmass = mass(ij,l) + fac*(wfluxt(ij,l)-wfluxt(ij,l+1)) |
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| 267 | q(ij,l) = ( q(ij,l)*mass(ij,l) + wq(ij,l)-wq(ij,l+1) ) / newmass |
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| 268 | IF(update_mass) mass(ij,l)=newmass |
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[22] | 269 | ENDDO |
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| 270 | ENDDO |
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| 271 | END DO |
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[136] | 272 | |
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[148] | 273 | CALL trace_end("vlz") |
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| 274 | |
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[22] | 275 | END SUBROUTINE vlz |
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[17] | 276 | |
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| 277 | END MODULE advect_tracer_mod |
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