Changeset 3022


Ignore:
Timestamp:
Aug 1, 2023, 4:11:55 PM (16 months ago)
Author:
jbclement
Message:

Mars PEM:
Rework and correction of computation of the maximum number of iterations for PEM according to orbital parameters.
JBC

Location:
trunk
Files:
4 edited

Legend:

Unmodified
Added
Removed
  • trunk/LMDZ.COMMON/libf/evolution/orbit_param_criterion_mod.F90

    r2986 r3022  
    33!=======================================================================
    44!
    5 ! Purpose: Compute the maximum nimber of iteration the PEM can do based
    6 ! on the stopping criterion given by the orbital parameters
     5! Purpose: Compute the maximum number of iteration for PEM based on the
     6! stopping criterion given by the orbital parameters
    77!
    8 ! Author: RV 
     8! Author: RV, JBC
    99!=======================================================================
    1010
     
    4848
    4949      real :: Year                      ! Year of the simulation
    50       real :: timeperi_ls               ! Year of the simulation
    51       integer nlask,ilask!,last_ilask   ! Loop variable
     50      real :: Lsp                       ! Year of the simulation
     51      integer nlask, ilask, iylask      ! Loop variables
    5252      parameter (nlask = 20001)         ! Number of line in Laskar file
    5353
     
    5656      real max_obl,max_ex,max_lsp       ! Maximum value of orbit param given the acceptable percentage
    5757      real min_obl,min_ex,min_lsp       ! Maximum value of orbit param given the acceptable percentage
    58 
    59       real max_obl_iter,max_ex_iter,max_lsp_iter        ! Maximum year iteration before reaching an unacceptable value
    60 
    61       logical obl_not_found, ex_not_found,lsp_not_found ! Loop variable (first call)
    62       logical max_lsp_modulo,min_lsp_modulo             ! Variable to check if we are close to the 360 degree modulo for lsp parameter
    63 
     58      real max_obl_iter,max_ex_iter,max_lsp_iter ! Maximum year iteration before reaching an unacceptable value
    6459      real xa,xb,ya,yb,yc
    6560
     
    6863      ! **********************************************************************
    6964
    70           Year=year_bp_ini+year_PEM            ! We compute the current year
    71           timeperi_ls=timeperi*360/2/pi        ! We convert in degree
    72 
    73           call ini_lask_param_mod(nlask)       ! Allocation of variables
    74 
    75           print *, "orbit_param_criterion, Year in pem.def=", year_bp_ini
    76           print *, "orbit_param_criterion, Year in the startpem.nc =", year_PEM
    77           print *, "orbit_param_criterion, Current year=", Year
    78           print *, "orbit_param_criterion, Current obl=", obliquit
    79           print *, "orbit_param_criterion, Current ex=", e_elips
    80           print *, "orbit_param_criterion, Current lsp=", timeperi_ls
     65          Year = year_bp_ini + year_PEM      ! We compute the current year
     66          Lsp = 360. - timeperi*360./(2.*pi) ! We convert in degree
     67
     68          call ini_lask_param_mod(nlask) ! Allocation of variables
     69
     70          print*, "orbit_param_criterion, Year in pem.def=", year_bp_ini
     71          print*, "orbit_param_criterion, Year in the startpem.nc =", year_PEM
     72          print*, "orbit_param_criterion, Current year=", Year
     73          print*, "orbit_param_criterion, Current obl=", obliquit
     74          print*, "orbit_param_criterion, Current ex=", e_elips
     75          print*, "orbit_param_criterion, Current lsp=", Lsp
    8176
    8277! We read the file
     
    9489          close(73)
    9590
    96        print *, "Coresponding line in the ob_ex_lsp.asc file=", last_ilask
    97 
    98 ! 5% max change case
    99 
    100         max_change_obl=0.05
    101         max_change_ex=0.05
    102         max_change_lsp=0.05
    103 
    104         max_obl=obliquit*(1+max_change_obl)
    105         min_obl=obliquit*(1-max_change_obl)
    106 
    107         max_ex=e_elips*(1+max_change_ex)
    108         min_ex=e_elips*(1-max_change_ex)
    109 
    110         max_lsp=timeperi_ls*(1+max_change_lsp)
    111         min_lsp=timeperi_ls*(1-max_change_lsp)
    112 
    113 !End of 5% max change case
     91       print*, "Coresponding line in the ob_ex_lsp.asc file=", last_ilask
    11492
    11593!Constant max change case
    11694
    117         max_change_obl=0.5
    118         max_change_ex=0.1
    119         max_change_lsp=40.
     95        max_change_obl = 0.5
     96        max_change_ex = 0.1
     97        max_change_lsp = 40.
    12098
    12199        CALL getin('max_change_obl', max_change_obl)
     100        max_obl = obliquit + max_change_obl
     101        min_obl = obliquit - max_change_obl
     102        print*, "Maximum obliquity accepted=", max_obl
     103        print*, "Minimum obliquity accepted=", min_obl
    122104
    123105        CALL getin('max_change_ex', max_change_ex)
     106        max_ex = e_elips + max_change_ex
     107        min_ex = e_elips - max_change_ex
     108        print*, "Maximum excentricity accepted=", max_ex
     109        print*, "Minimum excentricity accepted=", min_ex
    124110
    125111        CALL getin('max_change_lsp', max_change_lsp)
    126 
    127         max_obl=obliquit+max_change_obl
    128         min_obl=obliquit-max_change_obl
    129 
    130         max_ex=e_elips+max_change_ex
    131         min_ex=e_elips-max_change_ex
    132 
    133         max_lsp=timeperi_ls+max_change_lsp
    134         min_lsp=timeperi_ls-max_change_lsp
    135 
    136         max_lsp_modulo=.false.
    137         min_lsp_modulo=.false.
    138         if(max_lsp.gt.360) max_lsp_modulo=.true.
    139         if(min_lsp.lt.0) min_lsp_modulo=.true.
     112        max_lsp = Lsp + max_change_lsp
     113        min_lsp = Lsp - max_change_lsp
     114        print*, "Maximum lsp accepted=", max_lsp
     115        print*, "Minimum lsp accepted=", min_lsp
    140116
    141117!End Constant max change case
     
    143119! If we do not want some orb parameter to change, they should not be a stopping criterion,
    144120! So the number of iteration corresponding is set to maximum
    145         if(.not.var_obl) then
    146            obl_not_found=.FALSE.
    147         else
    148            obl_not_found=.TRUE.
     121        max_obl_iter = 999999
     122        max_ex_iter = 999999
     123        max_lsp_iter = 999999
     124
     125        ! Tendency of the orbital parameter for the considered year gives the limitation between min and max
     126        do ilask = last_ilask,2,-1
     127          xa = yearlask(ilask)
     128          xb = yearlask(ilask - 1)
     129          if (xa <= Year .and. Year < xb) then
     130            ! Obliquity
     131            if (var_obl) then
     132              ya = oblask(ilask)
     133              yb = oblask(ilask - 1)
     134              if (ya < yb) then ! Increasing -> max is the limitation
     135                yc = max_obl
     136              else ! Decreasing -> min is the limitation
     137                yc = min_obl
     138              endif
     139            endif
     140
     141            ! Excentricity
     142            if (var_ex) then
     143              ya = exlask(ilask)
     144              yb = exlask(ilask - 1)
     145              if (ya < yb) then ! Increasing -> max is the limitation
     146                yc = max_ex
     147              else ! Decreasing -> min is the limitation
     148                yc = min_ex
     149              endif
     150            endif
     151
     152            ! Lsp
     153            if (var_lsp) then
     154              ya = lsplask(ilask)
     155              yb = lsplask(ilask - 1)
     156              if (ya < yb) then ! Increasing -> max is the limitation
     157                if (yb - ya > 300.) then ! If modulo is "crossed" then it is the other way around
     158                  !yb = yb - 360.
     159                  yc = min_lsp
     160                else
     161                  yc = max_lsp
     162                endif
     163              else ! Decreasing -> min is the limitation
     164                if (ya - yb > 300.) then ! If modulo is "crossed" then it is the other way around
     165                  !yb = yb + 360.
     166                  yc = max_lsp
     167                else
     168                  yc = min_lsp
     169                endif
     170              endif
     171            endif
     172            iylask = ilask
     173            exit ! The loop is left as soon as the right interval is found
     174          endif
     175        enddo
     176        if (ilask == 1) then
     177          write(*,*) 'The year does not match with Laskar data in the file ob_ex_lsp.asc.'
     178          stop
    149179        endif
    150         if(.not.var_ex) then
    151            ex_not_found=.FALSE.
    152         else
    153            ex_not_found=.TRUE.
    154         endif
    155         if(.not.var_lsp) then
    156            lsp_not_found=.FALSE.
    157         else
    158            lsp_not_found=.TRUE.
    159         endif
    160 
    161         max_obl_iter=999999
    162         max_ex_iter =999999
    163         max_lsp_iter=999999
    164 
    165 !--------------------------------
    166 
    167         yc=max_obl
    168         yc=min_obl
    169 
    170 !--------------------------------
    171 
    172         do ilask=last_ilask,2,-1
    173           xa=yearlask(ilask)
    174           xb=yearlask(ilask-1)
    175 ! Linear interpolation to find the maximum number of iteration
    176            if((oblask(ilask-1).GT.max_obl).and. obl_not_found ) then
    177               ya=oblask(ilask)
    178               yb=oblask(ilask-1)
    179               yc=max_obl
    180               max_obl_iter=xa*(yc-yb)/(ya-yb)+xb*(ya-yc)/(ya-yb)-Year
    181               obl_not_found=.FALSE.
    182            elseif((oblask(ilask-1).LT.min_obl).and. obl_not_found ) then
    183               ya=oblask(ilask)
    184               yb=oblask(ilask-1)
    185               yc=min_obl
    186               max_obl_iter=xa*(yc-yb)/(ya-yb)+xb*(ya-yc)/(ya-yb)-Year
    187               obl_not_found=.FALSE.
    188            endif
    189            if((exlask(ilask-1).GT.max_ex).and. ex_not_found ) then
    190               ya=exlask(ilask)
    191               yb=exlask(ilask-1)
    192               yc=max_ex
    193               max_ex_iter=xa*(yc-yb)/(ya-yb)+xb*(ya-yc)/(ya-yb)-Year
    194               ex_not_found=.FALSE.
    195            elseif((exlask(ilask-1).LT.min_ex ).and. ex_not_found ) then
    196               ya=exlask(ilask)
    197               yb=exlask(ilask-1)
    198               yc=min_ex
    199               max_ex_iter=xa*(yc-yb)/(ya-yb)+xb*(ya-yc)/(ya-yb)-Year
    200               ex_not_found=.FALSE.
    201            endif
    202            if(max_lsp_modulo .and. lsplask(ilask).lt.180) lsplask(ilask)=lsplask(ilask)+360.
    203            if(min_lsp_modulo .and. lsplask(ilask).gt.180) lsplask(ilask)=lsplask(ilask)-360.
    204            if((lsplask(ilask-1).GT.max_lsp).and. lsp_not_found ) then
    205               ya=lsplask(ilask)
    206               yb=lsplask(ilask-1)
    207               yc=max_lsp
    208               max_ex_iter=xa*(yc-yb)/(ya-yb)+xb*(ya-yc)/(ya-yb)-Year
    209               lsp_not_found=.FALSE.
    210            elseif((lsplask(ilask-1).LT.min_lsp ).and. lsp_not_found ) then
    211               ya=lsplask(ilask)
    212               yb=lsplask(ilask-1)
    213               yc=min_lsp
    214               max_ex_iter=xa*(yc-yb)/(ya-yb)+xb*(ya-yc)/(ya-yb)-Year
    215               lsp_not_found=.FALSE.
    216            endif
    217         enddo
    218 
    219       print *, "Maximum obliquity accepted=", max_obl
    220       print *, "Minimum obliquity accepted=", min_obl
    221       print *, "Maximum number of iteration for the obl. parameter=", max_obl_iter
    222 
    223       print *, "Maximum excentricity accepted=", max_ex
    224       print *, "Minimum excentricity accepted=", min_ex
    225       print *, "Maximum number of iteration for the ex. parameter=", max_ex_iter
    226 
    227       print *, "Maximum lsp accepted=", max_lsp
    228       print *, "Minimum lsp accepted=", min_lsp
    229       print *, "Maximum number of iteration for the lsp. parameter=", max_lsp_iter
    230 
    231       year_iter_max=min(max_obl_iter,max_ex_iter,max_lsp_iter)
    232 
    233       print *, "So the max. number of iteration (year) for the orbital parameter=", year_iter_max
     180
     181        ! Linear interpolation gives the maximum reachable year according to the limitation
     182        ! Obliquity
     183        if (var_obl) then
     184          do ilask = iylask,2,-1
     185            ya = oblask(ilask)
     186            yb = oblask(ilask - 1)
     187            if (ya <= yc .and. yc < yb) then
     188              xa = yearlask(ilask)
     189              xb = yearlask(ilask - 1)
     190              max_obl_iter = int((max_obl - ya)*(xb - xa)/(yb - ya) + xa) - Year
     191              exit ! The loop is left as soon as the right interval is found
     192            endif
     193          enddo
     194        endif
     195        ! Excentricity
     196        if (var_ex) then
     197          do ilask = iylask,2,-1
     198            ya = exlask(ilask)
     199            yb = exlask(ilask - 1)
     200            if (ya <= yc .and. yc < yb) then
     201              xa = yearlask(ilask)
     202              xb = yearlask(ilask - 1)
     203              max_ex_iter = int((max_ex - ya)*(xb - xa)/(yb - ya) + xa) - Year
     204              exit ! The loop is left as soon as the right interval is found
     205            endif           
     206          enddo
     207        endif
     208        ! Lsp
     209        if (var_lsp) then
     210          do ilask = iylask,2,-1
     211            ya = lsplask(ilask)
     212            yb = lsplask(ilask - 1)
     213            if (ya <= yc .and. yc < yb) then
     214              xa = yearlask(ilask)
     215              xb = yearlask(ilask - 1)
     216              max_lsp_iter = int((max_lsp - ya)*(xb - xa)/(yb - ya) + xa) - Year
     217              exit ! The loop is left as soon as the right interval is found
     218            endif
     219          enddo
     220        endif
     221
     222      print*, "Maximum number of iteration for the obl. parameter=", max_obl_iter
     223      print*, "Maximum number of iteration for the ex. parameter=", max_ex_iter
     224      print*, "Maximum number of iteration for the lsp. parameter=", max_lsp_iter
     225
     226      year_iter_max = min(max_obl_iter,max_ex_iter,max_lsp_iter)
     227      if (year_iter_max > 0) then
     228        print*, "So the max. number of iteration (year) for the orbital parameter=", year_iter_max
     229      else
     230        write(*,*) 'The max. number of iteration (year) is not compatible with Laskar data in the file ob_ex_lsp.asc.'
     231        stop
     232      endif
    234233
    235234        END SUBROUTINE orbit_param_criterion
  • trunk/LMDZ.COMMON/libf/evolution/pem.F90

    r3020 r3022  
    820820#endif
    821821
    822      if(evol_orbit_pem) then
     822     if (evol_orbit_pem) then
    823823       call orbit_param_criterion(year_iter_max)
    824824     else
    825        year_iter_max=Max_iter_pem
     825       year_iter_max = Max_iter_pem
    826826     endif
    827827
  • trunk/LMDZ.COMMON/libf/evolution/recomp_orb_param_mod.F90

    r2985 r3022  
    44! Purpose: Recompute orbit parameters based on values by Laskar et al.,
    55!
    6 ! Author: RV 
     6! Author: RV, JBC
    77!=======================================================================
    88      IMPLICIT NONE
     
    4242
    4343      real :: Year                      ! Year of the simulation
    44       real :: timeperi_ls               ! time of peri in ls
     44      real :: Lsp               ! time of peri in ls
    4545      integer ilask                     ! Loop variable
    4646      real :: halfaxe                   ! Million of km
    4747      real :: unitastr
    4848
    49       real xa,xb,xc,ya,yb
     49      real xa,xb,ya,yb
    5050
    5151
     
    6161#endif
    6262
    63           Year=year_bp_ini+year_PEM+final_iter
    64 
    65           timeperi_ls=timeperi*360/2/pi
     63          Year = year_bp_ini + year_PEM + final_iter ! We compute the current year
     64          Lsp = 360. - timeperi*360./(2.*pi)         ! We convert in degree
    6665
    6766!          Year=-953200
    68           print *, "recomp_orb_param, Old year=", year_bp_ini+year_PEM
    69           print *, "recomp_orb_param, New year=", Year
    70           print *, "recomp_orb_param, Old obl=", obliquit
    71           print *, "recomp_orb_param, Old ex=", e_elips
    72           print *, "recomp_orb_param, Old lsp=", timeperi_ls
    73           print *, "recomp_orb_param, Old timeperi=", timeperi
     67          print*, "recomp_orb_param, Old year=", year_bp_ini+year_PEM
     68          print*, "recomp_orb_param, New year=", Year
     69          print*, "recomp_orb_param, Old obl=", obliquit
     70          print*, "recomp_orb_param, Old ex=", e_elips
     71          print*, "recomp_orb_param, Old lsp=", Lsp
     72          print*, "recomp_orb_param, Old timeperi=", timeperi
    7473
    75         xc=Year
     74        do ilask = last_ilask,2,-1
     75          xa = yearlask(ilask)
     76          xb = yearlask(ilask - 1)
     77          if (xa <= Year .and. Year < xb) then
     78            ! Obliquity
     79            if (var_obl) then
     80              ya = oblask(ilask)
     81              yb = oblask(ilask - 1)
     82              obliquit = (Year - xa)*(yb - ya)/(xb - xa) + ya
     83            endif
    7684
    77         do ilask=last_ilask,1,-1
     85            ! Excentricity
     86            if (var_ex) then
     87              ya = exlask(ilask)
     88              yb = exlask(ilask - 1)
     89              e_elips = (Year - xa)*(yb - ya)/(xb - xa) + ya
     90            endif
    7891
    79           xa=yearlask(ilask)
    80           xb=yearlask(ilask+1)
     92            ! Lsp
     93            if (var_lsp) then
     94              ya = lsplask(ilask)
     95              yb = lsplask(ilask - 1)
     96              if (yb - ya > 300.) then ! If modulo is "crossed"
     97                if (ya < yb) then ! Increasing
     98                  yb = yb - 360.
     99                else ! Decreasing
     100                  yb = yb + 360.
     101                endif
     102              endif
     103              Lsp = (Year - xa)*(yb - ya)/(xb - xa) + ya
     104              Lsp = modulo(Lsp,360.)
     105            endif
     106            exit ! The loop is left as soon as the right interval is found
     107          endif
     108        enddo
     109        halfaxe = 227.94
     110        timeperi = Lsp*2.*pi/360.
     111        periheli = halfaxe*(1 - e_elips)
     112        aphelie =  halfaxe*(1 + e_elips)
     113        unitastr = 149.597927
     114        p_elips = 0.5*(periheli + aphelie)*(1. - e_elips*e_elips)/unitastr
     115#ifndef CPP_STD 
     116        call call_dayperi(timeperi,e_elips,peri_day,year_day)
     117#endif
    81118
    82            if(yearlask(ilask) .GT.Year) then
    83              if(var_obl) then
    84               ya=oblask(ilask)
    85               yb=oblask(ilask+1)
    86               obliquit=ya*(xc-xb)/(xa-xb)+yb*(xa-xc)/(xa-xb)
    87              endif
    88              if(var_ex) then
    89               ya=exlask(ilask)
    90               yb=exlask(ilask+1)
    91               e_elips=ya*(xc-xb)/(xa-xb)+yb*(xa-xc)/(xa-xb)
    92              endif
    93              if(var_lsp) then
    94                if(lsplask(ilask)-lsplask(ilask+1) .gt.200) then
    95                  if(lsplask(ilask).lt.lsplask(ilask+1)) then
    96                    lsplask(ilask)=lsplask(ilask)+360
    97                  else
    98                    lsplask(ilask+1)=lsplask(ilask+1)+360
    99                  endif
    100                endif
    101 
    102               ya=lsplask(ilask)
    103               yb=lsplask(ilask+1)
    104               timeperi_ls=ya*(xc-xb)/(xa-xb)+yb*(xa-xc)/(xa-xb)
    105               timeperi_ls=modulo(timeperi_ls,360.)
    106               halfaxe=227.94
    107               timeperi=timeperi_ls*2*pi/360
    108               periheli = halfaxe*(1-e_elips)
    109               aphelie =  halfaxe*(1+e_elips)
    110               unitastr=149.597927
    111               p_elips=0.5*(periheli+aphelie)*(1-e_elips*e_elips)/unitastr
    112 #ifndef CPP_STD 
    113               call call_dayperi(timeperi,e_elips,peri_day,year_day)
    114 #endif
    115              endif
    116               exit
    117            endif
    118         enddo
    119 
    120        print *, "recomp_orb_param, Final year of the PEM run:", Year
    121        print *, "recomp_orb_param, New obl=", obliquit
    122        print *, "recomp_orb_param, New ex=", e_elips
    123        print *, "recomp_orb_param, New timeperi=", timeperi
     119       print*, "recomp_orb_param, Final year of the PEM run:", Year
     120       print*, "recomp_orb_param, New obl=", obliquit
     121       print*, "recomp_orb_param, New ex=", e_elips
     122       print*, "recomp_orb_param, New timeperi=", timeperi
    124123
    125124      END SUBROUTINE recomp_orb_param
  • trunk/LMDZ.MARS/changelog.txt

    r3021 r3022  
    41554155== 31/07/2023 == JBC
    41564156Addition in 1D of relaxation towards a profile for atmospheric water. It needs the flag "atm_wat_tau" (real):
    4157  - atm_wat_profile < 0. -> no relaxation (default);
    4158  - atm_wat_profile >= 0. -> relaxation towards the value "atm_wat_profile" with relaxation time "atm_wat_tau".
     4157 - atm_wat_tau < 0. -> no relaxation (default);
     4158 - atm_wat_tau >= 0. -> relaxation towards the value "atm_wat_profile" with relaxation time "atm_wat_tau".
     4159
     4160== 1/08/2023 == JBC
     4161Rework and correction of computation of the maximum number of iterations for PEM according to orbital parameters.
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