[12] | 1 | MODULE timeloop_sw_mod |
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[19] | 2 | USE icosa |
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[17] | 3 | USE etat0_williamson_mod |
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[12] | 4 | |
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| 5 | INTEGER,PARAMETER :: euler=1, leapfrog=2, leapfrog_matsuno=3, adam_bashforth=4 |
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| 6 | |
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| 7 | CONTAINS |
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| 8 | |
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| 9 | SUBROUTINE timeloop |
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[19] | 10 | USE icosa |
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[12] | 11 | USE caldyn_sw_mod |
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[15] | 12 | USE dissip_sw_mod |
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[12] | 13 | USE etat0_mod |
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| 14 | IMPLICIT NONE |
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| 15 | TYPE(t_field),POINTER :: f_h(:),f_hm1(:), f_hm2(:) |
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| 16 | TYPE(t_field),POINTER :: f_u(:),f_um1(:),f_um2(:) |
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| 17 | TYPE(t_field),POINTER :: f_dh(:),f_dhm1(:), f_dhm2(:) |
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| 18 | TYPE(t_field),POINTER :: f_du(:),f_dum1(:),f_dum2(:) |
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| 19 | |
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| 20 | REAL(rstd),POINTER :: h(:) ,hm1(:), hm2(:) |
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| 21 | REAL(rstd),POINTER :: u(:) , um1(:), um2(:) |
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| 22 | REAL(rstd),POINTER :: dh(:), dhm1(:), dhm2(:) |
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| 23 | REAL(rstd),POINTER :: du(:), dum1(:), dum2(:) |
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| 24 | REAL(rstd) :: dt |
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| 25 | INTEGER :: ind |
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| 26 | INTEGER :: it,i,j,n |
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| 27 | INTEGER :: scheme |
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| 28 | INTEGER :: matsuno_period |
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| 29 | INTEGER :: itaumax |
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| 30 | |
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| 31 | |
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| 32 | dt=90. |
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| 33 | CALL getin('dt',dt) |
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| 34 | |
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| 35 | itaumax=100 |
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| 36 | CALL getin('itaumax',itaumax) |
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| 37 | |
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| 38 | scheme=leapfrog_matsuno |
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| 39 | CALL getin('scheme',scheme) |
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| 40 | |
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| 41 | matsuno_period=5 |
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| 42 | CALL getin('matsuno_period',matsuno_period) |
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| 43 | IF (scheme==leapfrog) matsuno_period=itaumax+1 |
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| 44 | |
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| 45 | |
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| 46 | CALL allocate_field(f_h,field_t,type_real) |
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| 47 | CALL allocate_field(f_hm1,field_t,type_real) |
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| 48 | CALL allocate_field(f_hm2,field_t,type_real) |
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| 49 | CALL allocate_field(f_dh,field_t,type_real) |
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| 50 | CALL allocate_field(f_dhm1,field_t,type_real) |
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| 51 | CALL allocate_field(f_dhm2,field_t,type_real) |
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| 52 | |
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| 53 | CALL allocate_field(f_u,field_u,type_real) |
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| 54 | CALL allocate_field(f_um1,field_u,type_real) |
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| 55 | CALL allocate_field(f_um2,field_u,type_real) |
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| 56 | CALL allocate_field(f_du,field_u,type_real) |
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| 57 | CALL allocate_field(f_dum1,field_u,type_real) |
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| 58 | CALL allocate_field(f_dum2,field_u,type_real) |
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| 59 | |
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| 60 | |
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| 61 | CALL allocate_caldyn |
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[13] | 62 | CALL init_dissip(dt) |
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[12] | 63 | |
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| 64 | CALL etat0_williamson(f_h,f_u) |
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| 65 | |
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| 66 | DO it=0,itaumax |
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| 67 | PRINT *,"SW: It No :",It |
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| 68 | |
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| 69 | CALL caldyn(f_h, f_u, f_dh, f_du) |
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[13] | 70 | |
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[12] | 71 | |
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| 72 | IF (scheme==Euler) THEN |
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| 73 | CALL euler_scheme |
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| 74 | ELSE IF (scheme==leapfrog) THEN |
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| 75 | CALL leapfrog_scheme |
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| 76 | ELSE IF (scheme==leapfrog_matsuno) THEN |
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| 77 | CALL leapfrog_matsuno_scheme |
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| 78 | ELSE IF (scheme==adam_bashforth) THEN |
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[15] | 79 | CALL dissip(f_u,f_du) |
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[12] | 80 | CALL adam_bashforth_scheme |
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| 81 | ENDIF |
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| 82 | |
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| 83 | ENDDO |
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| 84 | |
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| 85 | CONTAINS |
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| 86 | |
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| 87 | SUBROUTINE Euler_scheme |
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| 88 | IMPLICIT NONE |
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| 89 | INTEGER :: ind |
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| 90 | |
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| 91 | DO ind=1,ndomain |
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| 92 | h=f_h(ind) ; u=f_u(ind) ; |
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| 93 | dh=f_dh(ind) ; du=f_du(ind) ; |
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| 94 | h(:)=h(:)+dt*dh(:) |
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| 95 | u(:)=u(:)+dt*du(:) |
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| 96 | ENDDO |
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| 97 | |
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| 98 | END SUBROUTINE Euler_scheme |
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| 99 | |
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| 100 | SUBROUTINE leapfrog_scheme |
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| 101 | IMPLICIT NONE |
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| 102 | INTEGER :: ind |
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| 103 | |
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| 104 | DO ind=1,ndomain |
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| 105 | h=f_h(ind) ; u=f_u(ind) ; |
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| 106 | hm1=f_hm1(ind) ; um1=f_um1(ind) ; |
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| 107 | hm2=f_hm2(ind) ; um2=f_um2(ind) ; |
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| 108 | dh=f_dh(ind) ; du=f_du(ind) ; |
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| 109 | |
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| 110 | IF (it==0) THEN |
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| 111 | hm2(:)=h(:) ; um2(:)=u(:) |
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| 112 | |
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| 113 | h(:)=h(:)+dt*dh(:) |
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| 114 | u(:)=u(:)+dt*du(:) |
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| 115 | hm1(:)=h(:) ; um1(:)=u(:) |
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| 116 | |
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| 117 | ELSE |
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| 118 | |
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| 119 | h(:)=hm2(:)+2*dt*dh(:) |
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| 120 | u(:)=um2(:)+2*dt*du(:) |
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| 121 | |
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| 122 | hm2(:)=hm1(:) ; um2(:)=um1(:) |
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| 123 | hm1(:)=h(:) ; um1(:)=u(:) |
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| 124 | ENDIF |
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| 125 | |
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| 126 | ENDDO |
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| 127 | END SUBROUTINE leapfrog_scheme |
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| 128 | |
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| 129 | SUBROUTINE leapfrog_matsuno_scheme |
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| 130 | IMPLICIT NONE |
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| 131 | INTEGER :: ind |
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| 132 | |
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| 133 | DO ind=1,ndomain |
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| 134 | h=f_h(ind) ; u=f_u(ind) |
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| 135 | hm1=f_hm1(ind) ; um1=f_um1(ind) |
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| 136 | hm2=f_hm2(ind) ; um2=f_um2(ind) |
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| 137 | dh=f_dh(ind) ; du=f_du(ind) ; |
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| 138 | |
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| 139 | |
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| 140 | IF (MOD(it,matsuno_period+1)==0) THEN |
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| 141 | hm1(:)=h(:) ; um1(:)=u(:) |
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| 142 | h(:)=hm1(:)+dt*dh(:) |
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| 143 | u(:)=um1(:)+dt*du(:) |
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| 144 | |
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| 145 | ELSE IF (MOD(it,matsuno_period+1)==1) THEN |
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| 146 | |
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| 147 | h(:)=hm1(:)+dt*dh(:) |
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| 148 | u(:)=um1(:)+dt*du(:) |
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| 149 | |
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| 150 | hm2(:)=hm1(:) ; um2(:)=um1(:) |
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| 151 | hm1(:)=h(:) ; um1(:)=u(:) |
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| 152 | |
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| 153 | ELSE |
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| 154 | |
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| 155 | h(:)=hm2(:)+2*dt*dh(:) |
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| 156 | u(:)=um2(:)+2*dt*du(:) |
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| 157 | |
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| 158 | hm2(:)=hm1(:) ; um2(:)=um1(:) |
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| 159 | hm1(:)=h(:) ; um1(:)=u(:) |
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| 160 | |
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| 161 | ENDIF |
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| 162 | |
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| 163 | ENDDO |
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| 164 | |
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| 165 | END SUBROUTINE leapfrog_matsuno_scheme |
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| 166 | |
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| 167 | SUBROUTINE adam_bashforth_scheme |
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| 168 | IMPLICIT NONE |
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| 169 | INTEGER :: ind |
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| 170 | |
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| 171 | DO ind=1,ndomain |
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| 172 | h=f_h(ind) ; u=f_u(ind) |
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| 173 | dh=f_dh(ind) ; du=f_du(ind) |
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| 174 | dhm1=f_dhm1(ind) ; dum1=f_dum1(ind) |
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| 175 | dhm2=f_dhm2(ind) ; dum2=f_dum2(ind) |
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| 176 | |
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| 177 | IF (it==0) THEN |
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| 178 | dhm1(:)=dh(:) ; dum1(:)=du(:) |
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| 179 | dhm2(:)=dhm1(:) ; dum2(:)=dum1(:) |
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| 180 | ENDIF |
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| 181 | |
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| 182 | h(:)=h(:)+dt*(23*dh(:)-16*dhm1(:)+5*dhm2(:))/12 |
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| 183 | u(:)=u(:)+dt*(23*du(:)-16*dum1(:)+5*dum2(:))/12 |
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| 184 | |
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| 185 | dhm2(:)=dhm1(:) ; dum2(:)=dum1(:) |
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| 186 | dhm1(:)=dh(:) ; dum1(:)=du(:) |
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| 187 | |
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| 188 | ENDDO |
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| 189 | |
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| 190 | |
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| 191 | END SUBROUTINE adam_bashforth_scheme |
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| 192 | |
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| 193 | END SUBROUTINE timeloop |
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| 194 | |
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| 195 | |
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| 196 | |
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| 197 | END MODULE timeloop_sw_mod |
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