| 1 | MODULE orbit_param_criterion_mod |
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| 2 | |
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| 3 | IMPLICIT NONE |
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| 4 | |
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| 5 | CONTAINS |
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| 6 | |
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| 7 | SUBROUTINE orbit_param_criterion(year_iter_max) |
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| 8 | |
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| 9 | USE temps_mod_evol, ONLY: year_bp_ini, year_PEM, var_obl, var_ex, var_lsp |
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| 10 | #ifndef CPP_STD |
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| 11 | USE planete_h, ONLY: e_elips, obliquit, timeperi |
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| 12 | #else |
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| 13 | use planete_mod, only: e_elips, obliquit, timeperi |
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| 14 | #endif |
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| 15 | USE comconst_mod, ONLY: pi |
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| 16 | USE lask_param_mod, only: yearlask,oblask,exlask,lsplask, & |
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| 17 | ini_lask_param_mod,last_ilask |
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| 18 | |
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| 19 | IMPLICIT NONE |
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| 20 | |
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| 21 | !-------------------------------------------------------- |
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| 22 | ! Input Variables |
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| 23 | !-------------------------------------------------------- |
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| 24 | |
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| 25 | !-------------------------------------------------------- |
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| 26 | ! Output Variables |
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| 27 | !-------------------------------------------------------- |
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| 28 | |
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| 29 | integer,intent(out) :: year_iter_max ! Maximum number of iteration of the PEM before orb changes too much |
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| 30 | |
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| 31 | !-------------------------------------------------------- |
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| 32 | ! Local variables |
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| 33 | !-------------------------------------------------------- |
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| 34 | |
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| 35 | real :: Year ! Year of the simulation |
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| 36 | real :: timeperi_ls ! Year of the simulation |
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| 37 | integer nlask,ilask!,last_ilask !Loop variable |
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| 38 | parameter (nlask = 20001) |
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| 39 | |
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| 40 | real max_change_obl,max_change_ex,max_change_lsp ! Percentage of change that is considered to be acceptible |
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| 41 | |
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| 42 | real max_obl,max_ex,max_lsp !Maximum value of orbit param given the acceptable percentage |
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| 43 | real min_obl,min_ex,min_lsp !Maximum value of orbit param given the acceptable percentage |
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| 44 | |
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| 45 | real max_obl_iter,max_ex_iter,max_lsp_iter !Maximum year iteration before reaching an unacceptable value |
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| 46 | |
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| 47 | logical obl_not_found, ex_not_found,lsp_not_found !Loop variable (first call) |
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| 48 | |
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| 49 | ! ********************************************************************** |
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| 50 | ! 0. Initializations |
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| 51 | ! ********************************************************************** |
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| 52 | |
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| 53 | Year=year_bp_ini+year_PEM |
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| 54 | timeperi_ls=timeperi*360/2/pi |
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| 55 | |
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| 56 | call ini_lask_param_mod(nlask) |
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| 57 | |
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| 58 | print *, "orbit_param_criterion, Year in pem.def=", year_bp_ini |
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| 59 | print *, "orbit_param_criterion, Year in the startpem.nc =", year_PEM |
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| 60 | print *, "orbit_param_criterion, Current year=", Year |
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| 61 | print *, "orbit_param_criterion, Current obl=", obliquit |
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| 62 | print *, "orbit_param_criterion, Current ex=", e_elips |
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| 63 | print *, "orbit_param_criterion, Current lsp=", timeperi_ls |
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| 64 | |
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| 65 | open(73,file='ob_ex_lsp.asc') |
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| 66 | do ilask=1,nlask |
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| 67 | read(73,*) yearlask(ilask),oblask(ilask), & |
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| 68 | exlask(ilask),lsplask(ilask) |
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| 69 | yearlask(ilask)=yearlask(ilask)*1000 |
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| 70 | |
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| 71 | if(yearlask(ilask).GT.Year) then |
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| 72 | last_ilask=ilask+1 |
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| 73 | endif |
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| 74 | end do |
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| 75 | close(73) |
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| 76 | |
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| 77 | print *, "Coresponding line in the ob_ex_lsp.asc file=", last_ilask |
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| 78 | |
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| 79 | ! 5% max change case |
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| 80 | |
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| 81 | max_change_obl=0.05 |
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| 82 | max_change_ex=0.05 |
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| 83 | max_change_lsp=0.05 |
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| 84 | |
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| 85 | max_obl=obliquit*(1+max_change_obl) |
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| 86 | min_obl=obliquit*(1-max_change_obl) |
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| 87 | |
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| 88 | max_ex=e_elips*(1+max_change_ex) |
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| 89 | min_ex=e_elips*(1-max_change_ex) |
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| 90 | |
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| 91 | max_lsp=timeperi_ls*(1+max_change_lsp) |
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| 92 | min_lsp=timeperi_ls*(1-max_change_lsp) |
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| 93 | |
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| 94 | !End of 5% max change case |
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| 95 | |
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| 96 | !Constant max change case |
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| 97 | |
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| 98 | max_change_obl=0.1 |
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| 99 | max_change_ex=0.1 |
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| 100 | max_change_lsp=40. |
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| 101 | |
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| 102 | max_obl=obliquit+max_change_obl |
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| 103 | min_obl=obliquit-max_change_obl |
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| 104 | |
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| 105 | max_ex=e_elips+max_change_ex |
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| 106 | min_ex=e_elips-max_change_ex |
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| 107 | |
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| 108 | max_lsp=timeperi_ls+max_change_lsp |
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| 109 | min_lsp=timeperi_ls-max_change_lsp |
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| 110 | |
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| 111 | !End Constant max change case |
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| 112 | |
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| 113 | ! If we do not want some orb parameter to change, they should not be a stopping criterion, |
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| 114 | ! So the number of iteration corresponding is set to maximum |
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| 115 | if(.not.var_obl) then |
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| 116 | obl_not_found=.FALSE. |
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| 117 | else |
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| 118 | obl_not_found=.TRUE. |
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| 119 | endif |
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| 120 | if(.not.var_ex) then |
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| 121 | ex_not_found=.FALSE. |
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| 122 | else |
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| 123 | ex_not_found=.TRUE. |
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| 124 | endif |
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| 125 | if(.not.var_lsp) then |
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| 126 | lsp_not_found=.FALSE. |
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| 127 | else |
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| 128 | lsp_not_found=.TRUE. |
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| 129 | endif |
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| 130 | |
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| 131 | max_obl_iter=999999999999 |
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| 132 | max_ex_iter =999999999999 |
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| 133 | max_lsp_iter=999999999999 |
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| 134 | |
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| 135 | do ilask=last_ilask+1,1,-1 |
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| 136 | if((oblask(ilask).GT.max_obl).and. obl_not_found ) then |
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| 137 | max_obl_iter=(max_obl-oblask(ilask)) * (yearlask(ilask-1)-yearlask(ilask)) & |
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| 138 | / (oblask(ilask-1)-oblask(ilask)) |
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| 139 | obl_not_found=.FALSE. |
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| 140 | elseif((oblask(ilask).LT.min_obl).and. obl_not_found ) then |
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| 141 | max_obl_iter=(min_obl-oblask(ilask)) * (yearlask(ilask-1)-yearlask(ilask)) & |
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| 142 | / (oblask(ilask-1)-oblask(ilask)) |
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| 143 | obl_not_found=.FALSE. |
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| 144 | endif |
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| 145 | if((exlask(ilask).GT.max_ex).and. ex_not_found ) then |
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| 146 | max_ex_iter=(max_ex-exlask(ilask)) * (yearlask(ilask-1)-yearlask(ilask)) & |
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| 147 | / (exlask(ilask-1)-exlask(ilask)) |
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| 148 | ex_not_found=.FALSE. |
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| 149 | elseif((exlask(ilask).LT.min_ex ).and. ex_not_found ) then |
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| 150 | max_ex_iter=(min_ex-exlask(ilask)) * (yearlask(ilask-1)-yearlask(ilask)) & |
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| 151 | / (exlask(ilask-1)-exlask(ilask)) |
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| 152 | ex_not_found=.FALSE. |
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| 153 | endif |
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| 154 | if((lsplask(ilask).GT.max_lsp).and. lsp_not_found ) then |
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| 155 | max_lsp_iter=(max_lsp-lsplask(ilask)) * (yearlask(ilask-1)-yearlask(ilask)) & |
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| 156 | / (lsplask(ilask-1)-lsplask(ilask)) |
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| 157 | lsp_not_found=.FALSE. |
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| 158 | elseif((lsplask(ilask).LT.min_lsp ).and. lsp_not_found ) then |
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| 159 | max_lsp_iter=(min_lsp-lsplask(ilask)) * (yearlask(ilask-1)-yearlask(ilask)) & |
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| 160 | / (lsplask(ilask-1)-lsplask(ilask)) |
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| 161 | lsp_not_found=.FALSE. |
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| 162 | endif |
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| 163 | enddo |
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| 164 | |
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| 165 | print *, "Maximum obliquity accepted=", max_obl |
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| 166 | print *, "Minimum obliquity accepted=", min_obl |
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| 167 | print *, "Maximum number of iteration for the obl. parameter=", max_obl_iter |
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| 168 | |
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| 169 | print *, "Maximum excentricity accepted=", max_ex |
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| 170 | print *, "Minimum excentricity accepted=", min_ex |
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| 171 | print *, "Maximum number of iteration for the ex. parameter=", max_ex_iter |
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| 172 | |
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| 173 | print *, "Maximum lsp accepted=", max_obl |
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| 174 | print *, "Minimum lsp accepted=", min_obl |
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| 175 | print *, "Maximum number of iteration for the lsp. parameter=", max_lsp_iter |
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| 176 | |
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| 177 | year_iter_max=min(max_obl_iter,max_ex_iter,max_lsp_iter) |
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| 178 | |
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| 179 | print *, "So the max. number of iteration (year) for the orbital parameter=", year_iter_max |
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| 180 | |
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| 181 | END SUBROUTINE orbit_param_criterion |
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| 182 | |
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| 183 | !******************************************************************************** |
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| 184 | |
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| 185 | END MODULE orbit_param_criterion_mod |
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