| 1 | !======================================================================================================================! |
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| 2 | ! Module: Scheme of co2 cloud formation ===============================================================================! |
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| 3 | !----------------------------------------------------------------------------------------------------------------------! |
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| 4 | ! Authors: Joaquim Audouard, Constantino Listowski, Anni Määttänen |
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| 5 | ! Date: 09/2016 |
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| 6 | !----------------------------------------------------------------------------------------------------------------------! |
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| 7 | ! Contains subroutines: |
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| 8 | ! - improvedco2clouds_mod: nucleation |
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| 9 | ! |
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| 10 | ! - density_co2_ice: compute density of co2 ice particle |
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| 11 | !======================================================================================================================! |
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| 12 | module improvedco2clouds_mod |
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| 13 | |
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| 14 | implicit none |
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| 15 | |
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| 16 | contains |
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| 17 | !======================================================================================================================! |
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| 18 | ! SUBROUTINE: improvedco2clouds =======================================================================================! |
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| 19 | !======================================================================================================================! |
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| 20 | ! Subject: |
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| 21 | !--------- |
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| 22 | ! This routine is used to form CO2 clouds when a parcel of the GCM is saturated. |
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| 23 | !----------------------------------------------------------------------------------------------------------------------! |
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| 24 | ! Comments: |
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| 25 | !---------- |
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| 26 | ! Adaptation for CO2 clouds based on improvedclouds_mod.F |
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| 27 | ! |
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| 28 | ! It includes the ability to have supersaturation, a computation of the nucleation rates, growthrates and the |
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| 29 | ! scavenging of dust particles by clouds. It is worth noting that the amount of dust is computed using the dust |
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| 30 | ! optical depth computed in aeropacity.F. |
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| 31 | ! That's why the variable called "tauscaling" is used to convert pq(dust_mass) and pq(dust_number), which are relative |
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| 32 | ! quantities, to absolute and realistic quantities stored in zq. This has to be done to convert the inputs into |
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| 33 | ! absolute values, but also to convert the outputs back into relative values which are then used by the sedimentation |
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| 34 | ! and advection schemes. |
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| 35 | ! CO2 ice particles can nucleate on both dust and water ice particles. When CO2 ice is deposited onto a water ice |
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| 36 | ! particles, the particle is removed from the water tracers. Memory of the origin of the co2 particles is kept and |
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| 37 | ! thus the water cycle shouldn't be modified by this. |
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| 38 | ! There is an energy limit to how much co2 can sublimate/condensate. It is defined by the difference of the GCM |
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| 39 | ! temperature with the co2 condensation temperature. |
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| 40 | ! |
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| 41 | ! /!\ WARNING /!\ |
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| 42 | ! No sedimentation of the water ice origin is performed in the microphysical timestep in co2cloud.F. |
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| 43 | ! |
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| 44 | ! If meteoritic particles are activated and turn into co2 ice particles, then they will be reversed in the dust |
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| 45 | ! tracers if the cloud sublimates. |
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| 46 | !----------------------------------------------------------------------------------------------------------------------! |
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| 47 | ! Paper: |
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| 48 | !------- |
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| 49 | ! see co2cloud.F90 |
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| 50 | !----------------------------------------------------------------------------------------------------------------------! |
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| 51 | ! Algorithm: |
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| 52 | !----------- |
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| 53 | ! 0. Firstcall |
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| 54 | ! 0.1. Bonus: meteoritic component, extract data |
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| 55 | ! 1. Initialization |
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| 56 | ! 2. Compute saturation |
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| 57 | ! 3. Bonus: additional meteoritic particles for nucleation |
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| 58 | ! 4. Actual microphysics: Main loop over the GCM's grid |
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| 59 | ! 4.1 Nucleation |
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| 60 | ! 4.2. Ice growth: scheme for radius evolution |
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| 61 | ! 4.3 Dust cores releasing if no more co2 ice |
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| 62 | ! 5. Get cloud tendencies |
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| 63 | !======================================================================================================================! |
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| 64 | subroutine improvedCO2clouds(ngrid, nlay, microtimestep, pplay, pplev, pteff, sum_subpdt, pqeff, sum_subpdq, & |
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| 65 | subpdqcloudco2, subpdtcloudco2, nq, tauscaling, mem_Mccn_co2, mem_Mh2o_co2, & |
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| 66 | mem_Nccn_co2, rb_cldco2, sigma_iceco2, dev2) |
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| 67 | |
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| 68 | use comcstfi_h, only: pi, g, cpp |
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| 69 | |
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| 70 | use updaterad, only: updaterice_micro, updaterice_microco2, updaterccnCO2 |
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| 71 | |
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| 72 | use tracer_mod, only: igcm_dust_mass, igcm_dust_number, rho_dust, igcm_h2o_ice, igcm_ccn_mass, igcm_ccn_number, & |
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| 73 | nuice_sed, igcm_co2, igcm_co2_ice, igcm_ccnco2_mass, igcm_ccnco2_number, nuiceco2_sed, & |
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| 74 | rho_ice_co2, nuiceco2_ref |
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| 75 | |
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| 76 | use conc_mod, only: mmean |
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| 77 | |
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| 78 | use datafile_mod, only: datadir |
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| 79 | |
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| 80 | implicit none |
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| 81 | |
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| 82 | include "callkeys.h" |
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| 83 | include "microphys.h" |
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| 84 | !----------------------------------------------------------------------------------------------------------------------! |
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| 85 | ! VARIABLES DECLARATION |
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| 86 | !----------------------------------------------------------------------------------------------------------------------! |
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| 87 | ! Input arguments: |
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| 88 | !----------------- |
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| 89 | integer, intent(in) :: & |
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| 90 | nq, &! number of tracers |
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| 91 | ngrid, &! number of point grid |
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| 92 | nlay ! number of layer |
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| 93 | |
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| 94 | real, intent(in) :: & |
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| 95 | microtimestep, &! physics time step (s) |
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| 96 | pplay(ngrid,nlay), &! mid-layer pressure (Pa) |
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| 97 | pplev(ngrid,nlay+1), &! inter-layer pressure (Pa) |
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| 98 | pteff(ngrid,nlay), &! temperature at the middle of the layers (K) |
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| 99 | sum_subpdt(ngrid,nlay), &! tendency on temperature from previous physical parametrizations |
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| 100 | pqeff(ngrid,nlay,nq), &! tracers (kg/kg) |
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| 101 | tauscaling(ngrid), &! convertion factor for qdust and Ndust |
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| 102 | sum_subpdq(ngrid,nlay,nq) ! tendencies on tracers before condensation (kg/kg.s-1) |
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| 103 | |
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| 104 | real, intent(in) :: & |
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| 105 | sigma_iceco2 ! Variance of the co2 ice and CCN distributions |
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| 106 | |
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| 107 | double precision, intent(in) :: & |
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| 108 | rb_cldco2(nbinco2_cld+1), & ! boundary values of each rad_cldco2 |
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| 109 | dev2 |
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| 110 | !----------------------------------------------------------------------------------------------------------------------! |
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| 111 | ! Output arguments: |
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| 112 | !------------------ |
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| 113 | real, intent(out) :: & |
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| 114 | subpdtcloudco2(ngrid,nlay), &! tendency on tracers due to CO2 condensation (K/s) |
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| 115 | subpdqcloudco2(ngrid,nlay,nq) ! tendency on tracers due to CO2 condensation (kg/kg.s-1) |
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| 116 | !----------------------------------------------------------------------------------------------------------------------! |
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| 117 | ! Local: |
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| 118 | !------- |
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| 119 | !----1) Parameters: |
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| 120 | !------------------ |
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| 121 | integer, parameter :: & |
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| 122 | ! ---Meteoritic flux input file |
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| 123 | nbin_meteor = 100, &! Dimension 1 |
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| 124 | nlev_meteor = 130, &! Dimension 2 |
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| 125 | uMeteor = 666, &! File unit |
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| 126 | ! ---Latent heat computation |
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| 127 | l0 = 595594d0, &! coeff from: Azreg-Aïnou (2005) |
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| 128 | l1 = 903.111d0, &! Title: "Low-temperature data for carbon dioxide" |
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| 129 | l2 = -11.5959d0, &! Pulication: eprint arXiv:1403.4403 |
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| 130 | l3 = 0.0528288d0, &! |
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| 131 | l4 = -0.000103183d0 ! |
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| 132 | |
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| 133 | real, parameter :: & |
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| 134 | threshold = 1e-30 ! limit value |
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| 135 | |
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| 136 | character(len=20), parameter:: & |
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| 137 | file_meteoritic_flux = 'Meteo_flux_Plane.dat' |
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| 138 | !----------------------------------------------------------------------------------------------------------------------! |
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| 139 | !----2) Saved: |
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| 140 | !------------- |
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| 141 | real, save :: & |
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| 142 | sigma_ice ! Variance of the h2o ice and CCN distributions |
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| 143 | |
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| 144 | double precision, save :: & |
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| 145 | meteor(nlev_meteor,nbin_meteor), &! Meteoritic flux read from file uMeteor |
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| 146 | dev3 ! 1. / ( sqrt(2.) * sigma_ice ) |
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| 147 | |
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| 148 | logical, save :: & |
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| 149 | firstcall = .true. ! Used to compute saved variables |
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| 150 | !----------------------------------------------------------------------------------------------------------------------! |
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| 151 | !----3) Variables: |
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| 152 | !----------------- |
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| 153 | integer :: & |
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| 154 | ig, &! loop on ngrid |
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| 155 | l, &! loop on nlay |
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| 156 | i, &! loop on nbinco2 |
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| 157 | ! ---Variables for meteoritic flux |
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| 158 | ibin, &! loop on nbin_meteor |
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| 159 | nelem, &! nb of points during interpolation of meteoritic flux |
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| 160 | lebon1, &! index where P_meteor is the nearest of pplev(ig,l) |
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| 161 | lebon2, &! index where P_meteor is the nearest of pplev(ig,l+1) |
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| 162 | read_ok ! file uMeteor iostat |
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| 163 | |
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| 164 | real :: & |
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| 165 | masse(ngrid,nlay), &! mass layer (kg.m-2) |
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| 166 | rice(ngrid,nlay), &! water ice mass mean radius (m): used for nucleation of CO2 on ice-coated ccns |
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| 167 | zq(ngrid,nlay,nq), &! local value of tracers (kg/kg) |
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| 168 | zq0(ngrid,nlay,nq), &! local init value of tracers (kg/kg) |
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| 169 | zt(ngrid,nlay), &! local value of temperature (K) |
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| 170 | zqsat(ngrid,nlay), &! saturation vapor pressure for CO2 (K) |
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| 171 | tcond(ngrid,nlay), &! condensation temperature of CO2 (K) |
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| 172 | lw, &! Latent heat of sublimation (J.kg-1) |
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| 173 | rdust(ngrid,nlay), &! Dust geometric mean radius (m) |
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| 174 | rhocloud(ngrid,nlay), &! Cloud density (kg.m-3) |
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| 175 | rhocloudco2(ngrid,nlay) ! Cloud density (kg.m-3) |
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| 176 | |
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| 177 | real(kind=8) :: & |
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| 178 | derf ! Error function |
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| 179 | |
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| 180 | double precision :: & |
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| 181 | dMice, &! mass of condensed ice |
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| 182 | facteurmax, &! for energy limit on mass growth |
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| 183 | pco2, &! Co2 vapor partial pressure (Pa) |
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| 184 | satu, &! Co2 vapor saturation ratio over ice |
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| 185 | Mo, &! mass of aerosol particles |
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| 186 | No, &! number of aerosol particles |
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| 187 | Rn, &! logarithm of rdust/rice |
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| 188 | Rm, &! Rn * variance of ice and CCN distribution |
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| 189 | n_derf, &! derf( (rb_cldco2(1)+Rn) *dev3) |
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| 190 | m_derf, &! derf( (rb_cldco2(1)+Rm) *dev2) |
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| 191 | mem_Mccn_co2(ngrid,nlay), &! Memory of CCN mass of H2O and dust used by CO2 |
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| 192 | mem_Mh2o_co2(ngrid,nlay), &! Memory of H2O mass integred into CO2 crystal |
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| 193 | mem_Nccn_co2(ngrid,nlay), &! Memory of CCN number of H2O and dust used by CO2 |
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| 194 | n_aer(nbinco2_cld), &! Radius used by the microphysical scheme (m) |
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| 195 | m_aer(nbinco2_cld), &! number concentration V-1 of particle/each size bin |
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| 196 | n_aer_h2oice(nbinco2_cld), &! mass mixing ratio of particle/each size bin |
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| 197 | m_aer_h2oice(nbinco2_cld), &! Same - for CO2 nucleation |
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| 198 | rad_h2oice(nbinco2_cld), &! Same - for CO2 nucleation |
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| 199 | Ic_rice, &! Mass transfer rate CO2 ice crystal |
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| 200 | ratioh2o_ccn, &! 1./(zq(ig,l,igcm_h2o_ice) + zq(ig,l,igcm_ccn_mass)*tauscaling(ig)) |
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| 201 | vo2co2, &! volume of co2 ice particle |
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| 202 | dN, &! number of particle of dust used as ccn |
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| 203 | dM, &! mass of dN |
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| 204 | dNh2o, &! number of particle of h2o ice used as ccn |
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| 205 | dMh2o, &! mass of dNh2o |
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| 206 | dNN, &! min(dN,zq(ig,l,igcm_dust_number)) |
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| 207 | dMM, &! min(dM,zq(ig,l,igcm_dust_mass)) |
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| 208 | dNNh2o, &! min(dNNh2o,zq(ig,l,igcm_ccn_number)) |
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| 209 | dMh2o_ice, &! min(dMh2o*zq(ig,l,igcm_h2o_ice)*ratioh2o_ccn, zq(ig,l,igcm_h2o_ice)) |
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| 210 | dMh2o_ccn, &! min(dMh2o_ccn,zq(ig,l,igcm_ccn_mass)) |
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| 211 | rate(nbinco2_cld), &! nucleation rate |
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| 212 | rateh2o(nbinco2_cld), &! nucleation rate for h2o |
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| 213 | rho_ice_co2T(ngrid,nlay), &! density of co2 ice |
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| 214 | riceco2(ngrid,nlay), &! CO2 ice mean radius (m) |
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| 215 | vrat_cld, &! Volume ratio |
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| 216 | Proba, &! 1.0 - exp(-1.*microtimestep*rate(i)) |
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| 217 | Probah2o, &! 1.0 - exp(-1.*microtimestep*rateh2o(i)) |
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| 218 | mtemp(nbinco2_cld), &! sum(meteor(lebon1:lebon2,ibin)) |
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| 219 | pression_meteor(nlev_meteor), &! pressure from meteoritic flux input file |
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| 220 | ltemp1(nlev_meteor), &! abs(pression_meteor(:)-pplev(ig,l)) |
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| 221 | ltemp2(nlev_meteor), &! abs(pression_meteor(:)-pplev(ig,l+1)) |
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| 222 | meteor_ccn(ngrid,nlay,nbinco2_cld) ! nbinco2_cld = 100 |
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| 223 | |
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| 224 | logical :: & |
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| 225 | file_ok ! test if meteoritic input file exists |
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| 226 | !======================================================================================================================! |
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| 227 | ! BEGIN ===============================================================================================================! |
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| 228 | !======================================================================================================================! |
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| 229 | ! 0. Firstcall |
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| 230 | !----------------------------------------------------------------------------------------------------------------------! |
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| 231 | if (firstcall) then |
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| 232 | firstcall = .false. |
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| 233 | |
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| 234 | ! Volume of a co2 molecule (m3) |
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| 235 | vo1co2 = m0co2 / dble(rho_ice_co2) |
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| 236 | |
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| 237 | ! Variance of the ice and CCN distributions |
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| 238 | sigma_ice = sqrt(log(1.+nuice_sed)) |
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| 239 | dev3 = 1. / ( sqrt(2.) * sigma_ice ) |
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| 240 | !----------------------------------------------------------------------------------------------------------------------! |
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| 241 | ! 0.1. Bonus: meteoritic component, extract data |
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| 242 | !----------------------------------------------------------------------------------------------------------------------! |
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| 243 | if (meteo_flux) then |
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| 244 | ! Check if file exists |
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| 245 | inquire(file=trim(datadir)//'/'//file_meteoritic_flux, exist=file_ok) |
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| 246 | if (.not. file_ok) then |
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| 247 | call abort_physic("CO2clouds", 'file '//file_meteoritic_flux//' should be in'//trim(datadir), 1) |
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| 248 | end if |
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| 249 | |
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| 250 | ! open file |
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| 251 | open(unit=uMeteor,file=trim(datadir)//'/'//file_meteoritic_flux, FORM='formatted') |
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| 252 | |
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| 253 | !skip 1 line |
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| 254 | read(uMeteor,*) |
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| 255 | |
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| 256 | ! extract pressure_meteor |
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| 257 | do i = 1, nlev_meteor |
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| 258 | read(uMeteor,*)pression_meteor(i) |
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| 259 | end do |
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| 260 | |
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| 261 | !skip 1 line |
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| 262 | read(uMeteor,*) |
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| 263 | |
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| 264 | ! extract meteor flux |
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| 265 | do i = 1, nlev_meteor |
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| 266 | ! les mêmes 100 bins size que la distri nuclea : on touche pas |
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| 267 | do ibin = 1, nbin_meteor |
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| 268 | read(uMeteor,'(F12.6)') meteor(i,ibin) |
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| 269 | end do |
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| 270 | end do |
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| 271 | |
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| 272 | ! close file |
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| 273 | close(uMeteor) |
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| 274 | end if ! of if meteo_flux |
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| 275 | end if ! firstcall |
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| 276 | !----------------------------------------------------------------------------------------------------------------------! |
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| 277 | ! 1. Initialization |
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| 278 | !----------------------------------------------------------------------------------------------------------------------! |
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| 279 | rdust(:,:) = 0. |
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| 280 | meteor_ccn(:,:,:) = 0. |
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| 281 | rice(:,:) = 1.e-8 |
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| 282 | riceco2(:,:) = 1.e-11 |
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| 283 | |
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| 284 | ! Initialize the tendencies |
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| 285 | subpdqcloudco2(:,:,:) = 0. |
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| 286 | subpdtcloudco2(:,:) = 0. |
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| 287 | |
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| 288 | ! pteff temperature layer; sum_subpdt dT.s-1 |
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| 289 | zt(:,:) = pteff(:,:) + sum_subpdt(:,:) * microtimestep |
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| 290 | |
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| 291 | ! pqeff traceur kg/kg; sum_subpdq tendance idem .s-1 |
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| 292 | zq(:,:,:) = pqeff(:,:,:) + sum_subpdq(:,:,:) * microtimestep |
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| 293 | where( zq(:,:,:) < threshold ) zq(:,:,:) = threshold |
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| 294 | |
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| 295 | zq0(:,:,:) = zq(:,:,:) |
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| 296 | !----------------------------------------------------------------------------------------------------------------------! |
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| 297 | ! 2. Compute saturation |
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| 298 | !----------------------------------------------------------------------------------------------------------------------! |
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| 299 | call co2sat(ngrid*nlay,zt,zqsat) |
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| 300 | call tcondco2(ngrid,nlay,pplay, zq(:,:,igcm_co2) + zq(:,:,igcm_co2_ice),tcond) |
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| 301 | !----------------------------------------------------------------------------------------------------------------------! |
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| 302 | ! 3. Bonus: additional meteoritic particles for nucleation |
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| 303 | !----------------------------------------------------------------------------------------------------------------------! |
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| 304 | ! TODO: instead of intepolation, used only the nearest pplev(ig,l) |
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| 305 | if (meteo_flux) then |
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| 306 | do l = 1, nlay |
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| 307 | do ig = 1, ngrid |
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| 308 | masse(ig,l) = (pplev(ig,l) - pplev(ig,l+1)) / g |
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| 309 | |
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| 310 | ltemp1 = abs(pression_meteor(:)-pplev(ig,l)) |
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| 311 | ltemp2 = abs(pression_meteor(:)-pplev(ig,l+1)) |
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| 312 | |
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| 313 | lebon1 = minloc(ltemp1,DIM=1) |
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| 314 | lebon2 = minloc(ltemp2,DIM=1) |
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| 315 | |
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| 316 | nelem = lebon2-lebon1+1. |
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| 317 | |
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| 318 | mtemp(:) = 0d0 |
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| 319 | |
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| 320 | do ibin = 1, nbin_meteor |
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| 321 | mtemp(ibin) = sum(meteor(lebon1:lebon2,ibin)) |
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| 322 | end do |
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| 323 | |
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| 324 | ! Par kg air csi par m carre, x epaisseur/masse pour par kg/air. Check original unit with J. Plane |
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| 325 | meteor_ccn(ig,l,:)=mtemp(:)/nelem/masse(ig,l) |
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| 326 | end do |
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| 327 | end do |
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| 328 | end if |
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| 329 | !----------------------------------------------------------------------------------------------------------------------! |
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| 330 | ! 4. Actual microphysics: Main loop over the GCM's grid |
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| 331 | !----------------------------------------------------------------------------------------------------------------------! |
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| 332 | do l = 1, nlay |
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| 333 | do ig = 1, ngrid |
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| 334 | |
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| 335 | ! Get the partial pressure of co2 vapor and its saturation ratio |
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| 336 | pco2 = zq(ig,l,igcm_co2) * (mmean(ig,l)/(mco2*1e3)) * pplay(ig,l) ! mco2 (kg/mol) => mmean (g/mol) |
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| 337 | satu = pco2 / zqsat(ig,l) |
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| 338 | |
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| 339 | !T-dependant CO2 ice density |
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| 340 | call density_co2_ice(dble(zt(ig,l)), rho_ice_co2T(ig,l)) |
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| 341 | |
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| 342 | vo2co2 = m0co2 / dble(rho_ice_co2T(ig,l)) |
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| 343 | rho_ice_co2 = rho_ice_co2T(ig,l) |
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| 344 | !----------------------------------------------------------------------------------------------------------------------! |
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| 345 | ! 4.1 Nucleation |
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| 346 | !----------------------------------------------------------------------------------------------------------------------! |
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| 347 | ! if there is condensation |
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| 348 | if ( satu >= 1 ) then |
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| 349 | call updaterccnCO2(zq(ig,l,igcm_dust_mass), zq(ig,l,igcm_dust_number), rdust(ig,l), tauscaling(ig)) |
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| 350 | |
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| 351 | ! Expand the dust moments into a binned distribution |
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| 352 | n_aer(:) = 0d0 ! number of aerosol particles |
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| 353 | m_aer(:) = 0d0 ! mass of aerosol particles |
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| 354 | |
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| 355 | No = zq(ig,l,igcm_dust_number) * tauscaling(ig) |
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| 356 | |
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| 357 | Mo = (4./3.) * pi * rho_dust * No * rdust(ig,l)**3 *exp(9.*nuiceco2_ref/2.) |
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| 358 | |
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| 359 | if (No > threshold) then |
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| 360 | Rn = -log(rdust(ig,l)) |
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| 361 | |
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| 362 | Rm = Rn - 3. * sigma_iceco2 * sigma_iceco2 |
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| 363 | |
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| 364 | n_derf = derf( (rb_cldco2(1)+Rn) *dev2) |
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| 365 | m_derf = derf( (rb_cldco2(1)+Rm) *dev2) |
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| 366 | |
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| 367 | do i = 1, nbinco2_cld |
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| 368 | n_aer(i) = -0.5 * No * n_derf |
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| 369 | m_aer(i) = -0.5 * Mo * m_derf |
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| 370 | |
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| 371 | n_derf = derf((rb_cldco2(i+1)+Rn) *dev2) |
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| 372 | m_derf = derf((rb_cldco2(i+1)+Rm) *dev2) |
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| 373 | |
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| 374 | n_aer(i) = n_aer(i) + 0.5 * No * n_derf |
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| 375 | m_aer(i) = m_aer(i) + 0.5 * Mo * m_derf |
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| 376 | end do |
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| 377 | |
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| 378 | ! Ajout meteor_ccn particles aux particules de poussière background |
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| 379 | if (meteo_flux) then |
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| 380 | do i = 1, nbinco2_cld |
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| 381 | n_aer(i) = n_aer(i) + meteor_ccn(ig,l,i) |
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| 382 | |
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| 383 | m_aer(i) = m_aer(i) + (4./3.) * pi * rho_dust *meteor_ccn(ig,l,i) * rad_cldco2(i)**3 |
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| 384 | end do |
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| 385 | end if |
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| 386 | |
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| 387 | ! Same but with h2o particles as CCN only if co2useh2o = .true. |
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| 388 | n_aer_h2oice(:)=0. |
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| 389 | m_aer_h2oice(:)=0. |
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| 390 | |
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| 391 | if (co2useh2o) then |
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| 392 | call updaterice_micro(zq(ig,l,igcm_h2o_ice), zq(ig,l,igcm_ccn_mass), zq(ig,l,igcm_ccn_number), & |
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| 393 | tauscaling(ig), rice(ig,l), rhocloud(ig,l)) |
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| 394 | |
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| 395 | Mo = zq(ig,l,igcm_h2o_ice) + zq(ig,l,igcm_ccn_mass) * tauscaling(ig) + threshold |
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| 396 | |
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| 397 | ! Total mass of H20 crystals,CCN included |
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| 398 | No = zq(ig,l,igcm_ccn_number) * tauscaling(ig) + threshold |
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| 399 | |
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| 400 | Rn = -log(rice(ig,l)) |
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| 401 | |
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| 402 | Rm = Rn - 3. * sigma_ice * sigma_ice |
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| 403 | |
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| 404 | n_derf = derf( (rb_cldco2(1)+Rn) *dev3) |
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| 405 | m_derf = derf( (rb_cldco2(1)+Rm) *dev3) |
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| 406 | |
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| 407 | do i = 1, nbinco2_cld |
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| 408 | n_aer_h2oice(i) = -0.5 * No * n_derf |
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| 409 | m_aer_h2oice(i) = -0.5 * Mo * m_derf |
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| 410 | |
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| 411 | n_derf = derf( (rb_cldco2(i+1)+Rn) *dev3) |
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| 412 | m_derf = derf( (rb_cldco2(i+1)+Rm) *dev3) |
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| 413 | |
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| 414 | n_aer_h2oice(i) = n_aer_h2oice(i) + 0.5 * No * n_derf |
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| 415 | m_aer_h2oice(i) = m_aer_h2oice(i) + 0.5 * Mo * m_derf |
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| 416 | |
|---|
| 417 | rad_h2oice(i) = rad_cldco2(i) |
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| 418 | end do |
|---|
| 419 | end if |
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| 420 | |
|---|
| 421 | ! Call to nucleation routine |
|---|
| 422 | call nucleaCO2(dble(pco2), zt(ig,l), dble(satu), n_aer, rate, n_aer_h2oice, rad_h2oice, rateh2o, vo2co2) |
|---|
| 423 | dN = 0. |
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| 424 | dM = 0. |
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| 425 | dNh2o = 0. |
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| 426 | dMh2o = 0. |
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| 427 | |
|---|
| 428 | do i = 1, nbinco2_cld |
|---|
| 429 | Proba = 1.0 - exp(-1.*microtimestep*rate(i)) |
|---|
| 430 | dN = dN + n_aer(i) * Proba |
|---|
| 431 | dM = dM + m_aer(i) * Proba |
|---|
| 432 | end do |
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| 433 | |
|---|
| 434 | if (co2useh2o) then |
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| 435 | do i = 1, nbinco2_cld |
|---|
| 436 | Probah2o = 1.0 - exp(-1.*microtimestep*rateh2o(i)) |
|---|
| 437 | dNh2o = dNh2o + n_aer_h2oice(i) * Probah2o |
|---|
| 438 | dMh2o = dMh2o + m_aer_h2oice(i) * Probah2o |
|---|
| 439 | end do |
|---|
| 440 | end if |
|---|
| 441 | |
|---|
| 442 | ! Now increment CCN tracers and update dust tracers |
|---|
| 443 | dNN = min(dN,zq(ig,l,igcm_dust_number)) ! dNN est devenu DN |
|---|
| 444 | dMM = min(dM,zq(ig,l,igcm_dust_mass)) ! idem dans le min |
|---|
| 445 | |
|---|
| 446 | zq(ig,l,igcm_ccnco2_mass) = zq(ig,l,igcm_ccnco2_mass) + dMM /tauscaling(ig) |
|---|
| 447 | |
|---|
| 448 | zq(ig,l,igcm_ccnco2_number) = zq(ig,l,igcm_ccnco2_number) + dNN /tauscaling(ig) |
|---|
| 449 | |
|---|
| 450 | zq(ig,l,igcm_dust_mass) = zq(ig,l,igcm_dust_mass) - dMM /tauscaling(ig) |
|---|
| 451 | |
|---|
| 452 | zq(ig,l,igcm_dust_number) = zq(ig,l,igcm_dust_number) - dNN /tauscaling(ig) |
|---|
| 453 | |
|---|
| 454 | ! Update CCN for CO2 nucleating on H2O CCN : Warning: must keep memory of it |
|---|
| 455 | if (co2useh2o) then |
|---|
| 456 | dNNh2o = dNh2o/tauscaling(ig) |
|---|
| 457 | dNNh2o = min(dNNh2o,zq(ig,l,igcm_ccn_number)) |
|---|
| 458 | |
|---|
| 459 | ratioh2o_ccn = 1./(zq(ig,l,igcm_h2o_ice) + zq(ig,l,igcm_ccn_mass)*tauscaling(ig)) |
|---|
| 460 | |
|---|
| 461 | dMh2o_ccn = dMh2o * zq(ig,l,igcm_ccn_mass) * tauscaling(ig) * ratioh2o_ccn |
|---|
| 462 | dMh2o_ccn = dMh2o_ccn/tauscaling(ig) |
|---|
| 463 | dMh2o_ccn = min(dMh2o_ccn,zq(ig,l,igcm_ccn_mass)) |
|---|
| 464 | |
|---|
| 465 | dMh2o_ice = dMh2o * zq(ig,l,igcm_h2o_ice) * ratioh2o_ccn |
|---|
| 466 | dMh2o_ice = min(dMh2o_ice,zq(ig,l,igcm_h2o_ice)) |
|---|
| 467 | |
|---|
| 468 | zq(ig,l,igcm_ccnco2_mass) = zq(ig,l,igcm_ccnco2_mass) + dMh2o_ice + dMh2o_ccn |
|---|
| 469 | |
|---|
| 470 | zq(ig,l,igcm_ccnco2_number) = zq(ig,l,igcm_ccnco2_number) + dNNh2o |
|---|
| 471 | |
|---|
| 472 | zq(ig,l,igcm_ccn_number) = zq(ig,l,igcm_ccn_number) - dNNh2o |
|---|
| 473 | |
|---|
| 474 | zq(ig,l,igcm_h2o_ice) = zq(ig,l,igcm_h2o_ice) - dMh2o_ice |
|---|
| 475 | |
|---|
| 476 | zq(ig,l,igcm_ccn_mass) = zq(ig,l,igcm_ccn_mass) - dMh2o_ccn |
|---|
| 477 | |
|---|
| 478 | mem_Mh2o_co2(ig,l) = mem_Mh2o_co2(ig,l) + dMh2o_ice |
|---|
| 479 | mem_Mccn_co2(ig,l) = mem_Mccn_co2(ig,l) + dMh2o_ccn |
|---|
| 480 | mem_Nccn_co2(ig,l) = mem_Nccn_co2(ig,l) + dNNh2o |
|---|
| 481 | end if ! of if co2useh2o |
|---|
| 482 | end if ! of if No > 1e-30 |
|---|
| 483 | end if ! of is satu > 1 |
|---|
| 484 | !----------------------------------------------------------------------------------------------------------------------! |
|---|
| 485 | ! 4.2. Ice growth: scheme for radius evolution |
|---|
| 486 | !----------------------------------------------------------------------------------------------------------------------! |
|---|
| 487 | ! We trigger crystal growth if and only if there is at least one nuclei (N>1). Indeed, if we are supersaturated |
|---|
| 488 | ! and still don't have at least one nuclei, we should better wait to avoid unrealistic value for nuclei radius |
|---|
| 489 | ! and so on for cases that remain negligible. |
|---|
| 490 | !----------------------------------------------------------------------------------------------------------------------! |
|---|
| 491 | ! we trigger crystal growth |
|---|
| 492 | if (zq(ig,l,igcm_ccnco2_number) * tauscaling(ig) + threshold >= 1) then |
|---|
| 493 | |
|---|
| 494 | call updaterice_microco2(dble(zq(ig,l,igcm_co2_ice)), dble(zq(ig,l,igcm_ccnco2_mass)), dble(zq(ig,l,igcm_ccnco2_number)), & |
|---|
| 495 | tauscaling(ig), riceco2(ig,l), rhocloudco2(ig,l)) |
|---|
| 496 | |
|---|
| 497 | Ic_rice = 0. |
|---|
| 498 | |
|---|
| 499 | ! J.kg-1 |
|---|
| 500 | lw = l0 + l1 * zt(ig,l) + l2 * zt(ig,l)**2 + l3 * zt(ig,l)**3 + l4 * zt(ig,l)**4 |
|---|
| 501 | |
|---|
| 502 | facteurmax = abs(tcond(ig,l)-zt(ig,l)) * (cpp/lw) |
|---|
| 503 | |
|---|
| 504 | ! call scheme of microphys. mass growth for CO2 (evaporation/condensation) |
|---|
| 505 | call massflowrateCO2(pplay(ig,l), zt(ig,l), satu, riceco2(ig,l), mmean(ig,l), Ic_rice) |
|---|
| 506 | |
|---|
| 507 | ! Ic_rice Mass transfer rate (kg/s) for a rice particle > 0 si croissance ! |
|---|
| 508 | if (isnan(Ic_rice) .or. Ic_rice == 0.) then |
|---|
| 509 | Ic_rice = 0. |
|---|
| 510 | subpdtcloudco2(ig,l) = -sum_subpdt(ig,l) |
|---|
| 511 | dMice = 0 |
|---|
| 512 | else |
|---|
| 513 | ! Kg par kg d'air, >0 si croissance ! |
|---|
| 514 | ! kg.s-1 par particule * nb particule par kg air*s = kg par kg air |
|---|
| 515 | dMice = zq(ig,l,igcm_ccnco2_number) * Ic_rice * microtimestep * tauscaling(ig) |
|---|
| 516 | |
|---|
| 517 | ! facteurmax maximum quantity of CO2 that can sublime/condense according to available thermal energy |
|---|
| 518 | ! latent heat release > 0 if growth i.e. if dMice > 0 |
|---|
| 519 | dMice = max(dMice,max(-facteurmax,-zq(ig,l,igcm_co2_ice))) |
|---|
| 520 | dMice = min(dMice,min(facteurmax,zq(ig,l,igcm_co2))) |
|---|
| 521 | |
|---|
| 522 | ! kgco2/kgair* J/kgco2 * 1/(J.kgair-1.K-1)/s = K /s |
|---|
| 523 | subpdtcloudco2(ig,l) = dMice * lw / cpp / microtimestep |
|---|
| 524 | |
|---|
| 525 | !Now update tracers |
|---|
| 526 | zq(ig,l,igcm_co2_ice) = zq(ig,l,igcm_co2_ice) + dMice |
|---|
| 527 | zq(ig,l,igcm_co2) = zq(ig,l,igcm_co2) - dMice |
|---|
| 528 | end if |
|---|
| 529 | end if ! if zq(ccnco2_number) >= 1 |
|---|
| 530 | !----------------------------------------------------------------------------------------------------------------------! |
|---|
| 531 | ! 4.3 Dust cores releasing if no more co2 ice |
|---|
| 532 | !----------------------------------------------------------------------------------------------------------------------! |
|---|
| 533 | ! On sublime tout |
|---|
| 534 | if ((zq(ig,l,igcm_co2_ice) <= threshold).or.(zq(ig,l,igcm_ccnco2_number) * tauscaling(ig) < 1.)) then |
|---|
| 535 | |
|---|
| 536 | if (co2useh2o) then |
|---|
| 537 | |
|---|
| 538 | if (mem_Mccn_co2(ig,l) > 0) then |
|---|
| 539 | zq(ig,l,igcm_ccn_mass) = zq(ig,l,igcm_ccn_mass) + mem_Mccn_co2(ig,l) |
|---|
| 540 | end if |
|---|
| 541 | |
|---|
| 542 | if (mem_Mh2o_co2(ig,l) > 0) then |
|---|
| 543 | zq(ig,l,igcm_h2o_ice) = zq(ig,l,igcm_h2o_ice) + mem_Mh2o_co2(ig,l) |
|---|
| 544 | end if |
|---|
| 545 | |
|---|
| 546 | if (mem_Nccn_co2(ig,l) > 0) then |
|---|
| 547 | zq(ig,l,igcm_ccn_number) = zq(ig,l,igcm_ccn_number) + mem_Nccn_co2(ig,l) |
|---|
| 548 | end if |
|---|
| 549 | |
|---|
| 550 | end if |
|---|
| 551 | |
|---|
| 552 | zq(ig,l,igcm_dust_mass) = zq(ig,l,igcm_dust_mass) + zq(ig,l,igcm_ccnco2_mass) - ( mem_Mh2o_co2(ig,l) + & |
|---|
| 553 | mem_Mccn_co2(ig,l) ) |
|---|
| 554 | |
|---|
| 555 | zq(ig,l,igcm_dust_number) = zq(ig,l,igcm_dust_number) + zq(ig,l,igcm_ccnco2_number) - mem_Nccn_co2(ig,l) |
|---|
| 556 | |
|---|
| 557 | zq(ig,l,igcm_co2) = zq(ig,l,igcm_co2) + zq(ig,l,igcm_co2_ice) |
|---|
| 558 | |
|---|
| 559 | zq(ig,l,igcm_co2_ice) = 0. |
|---|
| 560 | zq(ig,l,igcm_ccnco2_mass) = 0. |
|---|
| 561 | zq(ig,l,igcm_ccnco2_number) = 0. |
|---|
| 562 | mem_Nccn_co2(ig,l) = 0. |
|---|
| 563 | mem_Mh2o_co2(ig,l) = 0. |
|---|
| 564 | mem_Mccn_co2(ig,l) = 0. |
|---|
| 565 | riceco2(ig,l) = 0. |
|---|
| 566 | end if !of if co2_ice < threshold or zq(ccnco2_number) < 1 |
|---|
| 567 | end do ! of ig loop |
|---|
| 568 | end do ! of nlayer loop |
|---|
| 569 | !----------------------------------------------------------------------------------------------------------------------! |
|---|
| 570 | ! 5. Get cloud tendencies |
|---|
| 571 | !----------------------------------------------------------------------------------------------------------------------! |
|---|
| 572 | subpdqcloudco2(:,:,igcm_co2) = ( zq(:,:,igcm_co2) - zq0(:,:,igcm_co2) ) / microtimestep |
|---|
| 573 | |
|---|
| 574 | subpdqcloudco2(:,:,igcm_co2_ice) = ( zq(:,:,igcm_co2_ice) - zq0(:,:,igcm_co2_ice) ) / microtimestep |
|---|
| 575 | |
|---|
| 576 | subpdqcloudco2(:,:,igcm_ccnco2_mass) = ( zq(:,:,igcm_ccnco2_mass) - zq0(:,:,igcm_ccnco2_mass) ) / microtimestep |
|---|
| 577 | |
|---|
| 578 | subpdqcloudco2(:,:,igcm_ccnco2_number) = ( zq(:,:,igcm_ccnco2_number) - zq0(:,:,igcm_ccnco2_number))/microtimestep |
|---|
| 579 | |
|---|
| 580 | subpdqcloudco2(:,:,igcm_dust_mass) = ( zq(:,:,igcm_dust_mass) - zq0(:,:,igcm_dust_mass) ) / microtimestep |
|---|
| 581 | |
|---|
| 582 | subpdqcloudco2(:,:,igcm_dust_number) = ( zq(:,:,igcm_dust_number) - zq0(:,:,igcm_dust_number) ) / microtimestep |
|---|
| 583 | |
|---|
| 584 | if (co2useh2o) then |
|---|
| 585 | subpdqcloudco2(:,:,igcm_h2o_ice) = ( zq(:,:,igcm_h2o_ice) - zq0(:,:,igcm_h2o_ice) ) / microtimestep |
|---|
| 586 | |
|---|
| 587 | subpdqcloudco2(:,:,igcm_ccn_mass) = ( zq(:,:,igcm_ccn_mass) - zq0(:,:,igcm_ccn_mass) ) / microtimestep |
|---|
| 588 | |
|---|
| 589 | subpdqcloudco2(:,:,igcm_ccn_number) = ( zq(:,:,igcm_ccn_number) - zq0(:,:,igcm_ccn_number) ) / microtimestep |
|---|
| 590 | end if |
|---|
| 591 | !======================================================================================================================! |
|---|
| 592 | ! END =================================================================================================================! |
|---|
| 593 | !======================================================================================================================! |
|---|
| 594 | end subroutine improvedCO2clouds |
|---|
| 595 | |
|---|
| 596 | |
|---|
| 597 | !**********************************************************************************************************************! |
|---|
| 598 | !**********************************************************************************************************************! |
|---|
| 599 | |
|---|
| 600 | |
|---|
| 601 | !======================================================================================================================! |
|---|
| 602 | ! SUBROUTINE: density_co2_ice =========================================================================================! |
|---|
| 603 | !======================================================================================================================! |
|---|
| 604 | ! Subject: |
|---|
| 605 | !--------- |
|---|
| 606 | ! Compute co2 ice particles density |
|---|
| 607 | !======================================================================================================================! |
|---|
| 608 | subroutine density_co2_ice(temperature, density) |
|---|
| 609 | |
|---|
| 610 | implicit none |
|---|
| 611 | |
|---|
| 612 | double precision, intent(in) :: & |
|---|
| 613 | temperature |
|---|
| 614 | |
|---|
| 615 | double precision, intent(out) :: & |
|---|
| 616 | density |
|---|
| 617 | |
|---|
| 618 | density = 1000. * (1.72391 - 2.53e-4*temperature - 2.87e-6*temperature*temperature) |
|---|
| 619 | |
|---|
| 620 | end subroutine density_co2_ice |
|---|
| 621 | |
|---|
| 622 | end module improvedCO2clouds_mod |
|---|
| 623 | |
|---|
