| 1 | MODULE recomp_tend_co2_slope_mod |
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| 2 | |
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| 3 | implicit none |
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| 4 | |
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| 5 | !======================================================================= |
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| 6 | contains |
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| 7 | !======================================================================= |
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| 8 | |
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| 9 | SUBROUTINE recomp_tend_co2(ngrid,nslope,timelen,d_co2ice_phys,d_co2ice_ini,co2ice,emissivity, & |
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| 10 | vmr_co2_PCM,vmr_co2_PEM,ps_PCM_2,global_avg_press_PCM,global_avg_press_new) |
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| 11 | |
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| 12 | use constants_marspem_mod, only : alpha_clap_co2, beta_clap_co2, sigmaB, Lco2, sols_per_my, sec_per_sol |
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| 13 | |
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| 14 | implicit none |
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| 15 | |
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| 16 | !======================================================================= |
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| 17 | ! |
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| 18 | ! Routine that compute the evolution of the tendencie for co2 ice |
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| 19 | ! |
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| 20 | !======================================================================= |
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| 21 | |
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| 22 | ! arguments: |
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| 23 | ! ---------- |
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| 24 | ! INPUT |
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| 25 | integer, intent(in) :: timelen, ngrid, nslope |
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| 26 | real, dimension(ngrid,timelen), intent(in) :: vmr_co2_PCM ! physical point field: Volume mixing ratio of co2 in the first layer |
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| 27 | real, dimension(ngrid,timelen), intent(in) :: vmr_co2_PEM ! physical point field: Volume mixing ratio of co2 in the first layer |
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| 28 | real, dimension(ngrid,timelen), intent(in) :: ps_PCM_2 ! physical point field: Surface pressure in the PCM |
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| 29 | real, intent(in) :: global_avg_press_PCM ! global averaged pressure at previous timestep |
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| 30 | real, intent(in) :: global_avg_press_new ! global averaged pressure at current timestep |
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| 31 | real, dimension(ngrid,nslope), intent(in) :: d_co2ice_ini ! physical point field: Evolution of perennial ice over one year |
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| 32 | real, dimension(ngrid,nslope), intent(in) :: co2ice ! CO2 ice per mesh and sub-grid slope (kg/m^2) |
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| 33 | real, dimension(ngrid,nslope), intent(in) :: emissivity ! Emissivity per mesh and sub-grid slope(1) |
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| 34 | ! OUTPUT |
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| 35 | real, dimension(ngrid,nslope), intent(inout) :: d_co2ice_phys ! physical point field: Evolution of perennial ice over one year |
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| 36 | |
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| 37 | ! local: |
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| 38 | ! ------ |
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| 39 | integer :: i, t, islope |
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| 40 | real :: coef, ave |
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| 41 | |
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| 42 | write(*,*) "Update of the CO2 tendency from the current pressure" |
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| 43 | |
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| 44 | ! Evolution of the water ice for each physical point |
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| 45 | do i = 1,ngrid |
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| 46 | do islope = 1,nslope |
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| 47 | coef = sols_per_my*sec_per_sol*emissivity(i,islope)*sigmaB/Lco2 |
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| 48 | ave = 0. |
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| 49 | if (co2ice(i,islope) > 1.e-4 .and. abs(d_co2ice_phys(i,islope)) > 1.e-5) then |
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| 50 | do t = 1,timelen |
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| 51 | ave = ave + (beta_clap_co2/(alpha_clap_co2-log(vmr_co2_PCM(i,t)*ps_PCM_2(i,t)/100.)))**4 & |
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| 52 | - (beta_clap_co2/(alpha_clap_co2-log(vmr_co2_PEM(i,t)*ps_PCM_2(i,t)*(global_avg_press_new/global_avg_press_PCM)/100.)))**4 |
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| 53 | enddo |
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| 54 | if (ave < 1.e-4) ave = 0. |
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| 55 | d_co2ice_phys(i,islope) = d_co2ice_ini(i,islope) - coef*ave/timelen |
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| 56 | endif |
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| 57 | enddo |
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| 58 | enddo |
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| 59 | |
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| 60 | END SUBROUTINE recomp_tend_co2 |
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| 61 | |
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| 62 | END MODULE recomp_tend_co2_slope_mod |
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