| 1 | MODULE rocketduststorm_mod |
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| 2 | |
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| 3 | IMPLICIT NONE |
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| 4 | |
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| 5 | REAL, SAVE, ALLOCATABLE :: dustliftday(:) ! dust lifting rate (s-1) |
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| 6 | |
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| 7 | !$OMP THREADPRIVATE(dustliftday) |
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| 8 | |
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| 9 | CONTAINS |
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| 10 | |
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| 11 | !======================================================================= |
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| 12 | ! ROCKET DUST STORM - vertical transport and detrainment |
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| 13 | !======================================================================= |
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| 14 | ! calculation of the vertical flux |
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| 15 | ! call of van_leer : Van Leer transport scheme of the dust tracers |
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| 16 | ! detrainement of stormdust in the background dust |
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| 17 | ! ----------------------------------------------------------------------- |
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| 18 | ! Authors: M. Vals; C. Wang; F. Forget; T. Bertrand |
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| 19 | ! Institution: Laboratoire de Meteorologie Dynamique (LMD) Paris, France |
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| 20 | ! ----------------------------------------------------------------------- |
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| 21 | |
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| 22 | SUBROUTINE rocketduststorm(ngrid,nlayer,nq,ptime,ptimestep, & |
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| 23 | pq,pdqfi,pt,pdtfi,pplev,pplay,pzlev, & |
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| 24 | pzlay,pdtsw,pdtlw, & |
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| 25 | ! input for radiative transfer |
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| 26 | clearatm,icount,zday,zls, & |
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| 27 | tsurf,igout,totstormfract, & |
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| 28 | tauscaling,dust_rad_adjust, & |
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| 29 | IRtoVIScoef, & |
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| 30 | ! input sub-grid scale cloud |
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| 31 | clearsky,totcloudfrac, & |
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| 32 | ! input sub-grid scale topography |
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| 33 | nohmons, & |
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| 34 | ! output |
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| 35 | pdqrds,wrad,dsodust,dsords,dsotop, & |
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| 36 | tau_pref_scenario,tau_pref_gcm) |
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| 37 | |
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| 38 | USE tracer_mod, only: igcm_stormdust_mass,igcm_stormdust_number & |
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| 39 | ,igcm_dust_mass,igcm_dust_number & |
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| 40 | ,rho_dust |
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| 41 | USE comcstfi_h, only: r,g,cpp,rcp |
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| 42 | USE dimradmars_mod, only: albedo,naerkind |
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| 43 | USE comsaison_h, only: dist_sol,mu0,fract |
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| 44 | USE surfdat_h, only: emis,co2ice,zmea, zstd, zsig, hmons |
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| 45 | USE callradite_mod, only: callradite |
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| 46 | IMPLICIT NONE |
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| 47 | |
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| 48 | include "callkeys.h" |
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| 49 | |
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| 50 | !-------------------------------------------------------- |
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| 51 | ! Input Variables |
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| 52 | !-------------------------------------------------------- |
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| 53 | |
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| 54 | INTEGER, INTENT(IN) :: ngrid ! number of horizontal grid points |
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| 55 | INTEGER, INTENT(IN) :: nlayer ! number of vertical grid points |
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| 56 | INTEGER, INTENT(IN) :: nq ! number of tracer species |
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| 57 | REAL, INTENT(IN) :: ptime |
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| 58 | REAL, INTENT(IN) :: ptimestep |
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| 59 | |
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| 60 | REAL, INTENT(IN) :: pq(ngrid,nlayer,nq) ! advected field nq |
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| 61 | REAL, INTENT(IN) :: pdqfi(ngrid,nlayer,nq)! tendancy field pq |
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| 62 | REAL, INTENT(IN) :: pt(ngrid,nlayer) ! temperature at mid-layer (K) |
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| 63 | REAL, INTENT(IN) :: pdtfi(ngrid,nlayer) ! tendancy temperature at mid-layer (K) |
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| 64 | |
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| 65 | REAL, INTENT(IN) :: pplay(ngrid,nlayer) ! pressure at middle of the layers |
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| 66 | REAL, INTENT(IN) :: pplev(ngrid,nlayer+1) ! pressure at intermediate levels |
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| 67 | REAL, INTENT(IN) :: pzlay(ngrid,nlayer) ! altitude at the middle of the layers |
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| 68 | REAL, INTENT(IN) :: pzlev(ngrid,nlayer+1) ! altitude at layer boundaries |
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| 69 | |
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| 70 | REAL, INTENT(IN) :: pdtsw(ngrid,nlayer) ! (K/s) env |
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| 71 | REAL, INTENT(IN) :: pdtlw(ngrid,nlayer) ! (K/s) env |
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| 72 | |
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| 73 | ! input for second radiative transfer |
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| 74 | LOGICAL, INTENT(IN) :: clearatm |
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| 75 | INTEGER, INTENT(INOUT) :: icount |
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| 76 | REAL, INTENT(IN) :: zday |
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| 77 | REAL, INTENT(IN) :: zls |
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| 78 | REAL, INTENT(IN) :: tsurf(ngrid) |
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| 79 | INTEGER, INTENT(IN) :: igout |
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| 80 | REAL, INTENT(IN) :: totstormfract(ngrid) |
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| 81 | REAL, INTENT(INOUT) :: tauscaling(ngrid) |
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| 82 | REAL,INTENT(INOUT) :: dust_rad_adjust(ngrid) |
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| 83 | REAL,INTENT(INOUT) :: IRtoVIScoef(ngrid) ! NB: not modified by this call to callradite, |
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| 84 | ! the OUT is just here because callradite needs it |
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| 85 | |
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| 86 | ! subgrid scale water ice clouds |
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| 87 | logical, intent(in) :: clearsky |
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| 88 | real, intent(in) :: totcloudfrac(ngrid) |
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| 89 | |
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| 90 | ! subgrid scale topography |
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| 91 | LOGICAL, INTENT(IN) :: nohmons |
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| 92 | |
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| 93 | !-------------------------------------------------------- |
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| 94 | ! Output Variables |
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| 95 | !-------------------------------------------------------- |
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| 96 | |
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| 97 | REAL, INTENT(OUT) :: pdqrds(ngrid,nlayer,nq) ! tendancy field for dust when detraining |
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| 98 | REAL, INTENT(OUT) :: wrad(ngrid,nlayer+1) ! vertical speed within the rocket dust storm |
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| 99 | REAL, INTENT(OUT) :: dsodust(ngrid,nlayer) ! density scaled opacity of env. dust |
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| 100 | REAL, INTENT(OUT) :: dsords(ngrid,nlayer) ! density scaled opacity of storm dust |
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| 101 | REAL, INTENT(OUT) :: dsotop(ngrid,nlayer) ! density scaled opacity of topmons dust |
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| 102 | REAL,INTENT(OUT) :: tau_pref_scenario(ngrid) ! prescribed dust column |
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| 103 | ! visible opacity at odpref |
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| 104 | REAL,INTENT(OUT) :: tau_pref_gcm(ngrid) ! dust column visible opacity at |
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| 105 | ! odpref in the GCM |
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| 106 | !-------------------------------------------------------- |
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| 107 | ! Local variables |
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| 108 | !-------------------------------------------------------- |
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| 109 | INTEGER l,ig,iq,ll |
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| 110 | ! local variables from callradite.F |
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| 111 | REAL zdtlw1(ngrid,nlayer) ! (K/s) storm |
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| 112 | REAL zdtsw1(ngrid,nlayer) ! (K/s) storm |
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| 113 | REAL zt(ngrid,nlayer) ! actual temperature at mid-layer (K) |
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| 114 | REAL zdtvert(ngrid,nlayer) ! dT/dz , lapse rate |
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| 115 | REAL ztlev(ngrid,nlayer) ! temperature at intermediate levels l+1/2 without last level |
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| 116 | |
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| 117 | REAL zdtlw1_lev(nlayer),zdtsw1_lev(nlayer) ! rad. heating rate at intermediate levels l+1/2 for stormdust |
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| 118 | REAL zdtlw_lev(nlayer),zdtsw_lev(nlayer) ! rad. heating rate at intermediate levels l+1/2 for background dust |
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| 119 | |
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| 120 | REAL zq_stormdust_mass(ngrid,nlayer) ! intermediate tracer stormdust mass |
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| 121 | REAL zq_stormdust_number(ngrid,nlayer) ! intermediate tracer stormdust number |
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| 122 | REAL zq_dust_mass(ngrid,nlayer) ! intermediate tracer dust mass |
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| 123 | REAL zq_dust_number(ngrid,nlayer) ! intermediate tracer dust number |
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| 124 | |
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| 125 | REAL mr_stormdust_mass(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (stormdust mass) |
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| 126 | REAL mr_stormdust_number(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (stormdust number) |
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| 127 | REAL mr_dust_mass(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (dust mass) |
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| 128 | REAL mr_dust_number(ngrid,nlayer) ! intermediate mixing ratio to calculate van leer transport with the "real" concentration (sdust number) |
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| 129 | |
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| 130 | REAL dqvl_stormdust_mass(ngrid,nlayer) ! tendancy of vertical transport (stormdust mass) |
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| 131 | REAL dqvl_stormdust_number(ngrid,nlayer) ! tendancy of vertical transport (stormdust number) |
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| 132 | REAL dqvl_dust_mass(ngrid,nlayer) ! tendancy of vertical transport (dust mass) |
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| 133 | REAL dqvl_dust_number(ngrid,nlayer) ! tendancy of vertical transport (dust number) |
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| 134 | REAL dqdet_stormdust_mass(ngrid,nlayer) ! tendancy of detrainement (stormdust mass) |
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| 135 | REAL dqdet_stormdust_number(ngrid,nlayer) ! tendancy of detrainement (stormdust number) |
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| 136 | |
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| 137 | REAL masse_col(nlayer) ! mass of atmosphere (kg/m2) |
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| 138 | REAL zq(ngrid,nlayer,nq) ! updated tracers |
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| 139 | |
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| 140 | REAL w(ngrid,nlayer) ! air mass flux (calculated with the vertical wind velocity profile) used as input in Van Leer (kgair/m2) |
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| 141 | REAL wqmass(ngrid,nlayer+1) ! tracer (dust_mass) mass flux in Van Leer (kg/m2) |
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| 142 | REAL wqnumber(ngrid,nlayer+1) ! tracer (dust_number) mass flux in Van Leer (kg/m2) |
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| 143 | |
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| 144 | LOGICAL storm(ngrid) ! true when there is a dust storm (if the opacity is high): trigger the rocket dust storm scheme |
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| 145 | REAL detrain(ngrid,nlayer) ! coefficient for detrainment : % of stormdust detrained |
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| 146 | INTEGER scheme(ngrid) ! triggered scheme |
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| 147 | |
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| 148 | REAL,PARAMETER:: coefmin =0.025 ! 0<coefmin<1 Minimum fraction of stormdust detrained |
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| 149 | REAL,PARAMETER:: wmin =0.25 ! stormdust detrainment if wrad < wmin |
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| 150 | REAL,PARAMETER:: wmax =10. ! maximum vertical velocity of the rocket dust storms (m/s) |
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| 151 | |
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| 152 | ! subtimestep |
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| 153 | INTEGER tsub |
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| 154 | INTEGER nsubtimestep !number of subtimestep when calling van_leer |
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| 155 | REAL subtimestep !ptimestep/nsubtimestep |
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| 156 | REAL dtmax !considered time needed for dust to cross one layer |
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| 157 | REAL,PARAMETER:: secu=3.!3. !coefficient on wspeed to avoid dust crossing many layers during subtimestep |
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| 158 | |
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| 159 | ! diagnostics |
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| 160 | REAL lapserate(ngrid,nlayer) |
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| 161 | REAL deltahr(ngrid,nlayer+1) |
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| 162 | |
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| 163 | LOGICAL,SAVE :: firstcall=.true. |
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| 164 | |
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| 165 | !$OMP THREADPRIVATE(firstcall) |
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| 166 | |
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| 167 | ! variables for the radiative transfer |
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| 168 | REAL fluxsurf_lw1(ngrid) |
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| 169 | REAL fluxsurf_dn_sw1(ngrid,2),fluxsurf_up_sw1(ngrid,2) |
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| 170 | REAL fluxtop_lw1(ngrid) |
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| 171 | REAL fluxtop_dn_sw1(ngrid,2),fluxtop_up_sw1(ngrid,2) |
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| 172 | REAL tau(ngrid,naerkind) |
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| 173 | REAL aerosol(ngrid,nlayer,naerkind) |
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| 174 | REAL taucloudtes(ngrid) |
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| 175 | REAL rdust(ngrid,nlayer) |
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| 176 | REAL rstormdust(ngrid,nlayer) |
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| 177 | REAL rtopdust(ngrid,nlayer) |
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| 178 | REAL rice(ngrid,nlayer) |
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| 179 | REAL nuice(ngrid,nlayer) |
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| 180 | DOUBLE PRECISION riceco2(ngrid,nlayer) |
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| 181 | REAL nuiceco2(ngrid,nlayer) |
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| 182 | |
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| 183 | ! ********************************************************************** |
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| 184 | ! ********************************************************************** |
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| 185 | ! Rocket dust storm parametrization to reproduce the detached dust layers |
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| 186 | ! during the dust storm season: |
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| 187 | ! The radiative warming due to the presence of storm dust is |
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| 188 | ! balanced by the adiabatic cooling. The tracer "storm dust" |
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| 189 | ! is transported by the upward/downward flow. |
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| 190 | ! ********************************************************************** |
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| 191 | ! ********************************************************************** |
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| 192 | !! 1. Radiative transfer in storm dust |
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| 193 | !! 2. Compute vertical velocity for storm dust |
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| 194 | !! case 1 storm = false: nothing to do |
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| 195 | !! case 2 rocket dust storm (storm=true) |
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| 196 | !! 3. Vertical transport (Van Leer) |
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| 197 | !! 4. Detrainment |
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| 198 | ! ********************************************************************** |
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| 199 | ! ********************************************************************** |
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| 200 | |
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| 201 | |
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| 202 | ! ********************************************************************** |
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| 203 | ! Initializations |
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| 204 | ! ********************************************************************** |
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| 205 | storm(:)=.false. |
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| 206 | pdqrds(:,:,:) = 0. |
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| 207 | mr_dust_mass(:,:)=0. |
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| 208 | mr_dust_number(:,:)=0. |
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| 209 | mr_stormdust_mass(:,:)=0. |
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| 210 | mr_stormdust_number(:,:)=0. |
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| 211 | dqvl_dust_mass(:,:)=0. |
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| 212 | dqvl_dust_number(:,:)=0. |
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| 213 | dqvl_stormdust_mass(:,:)=0. |
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| 214 | dqvl_stormdust_number(:,:)=0. |
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| 215 | dqdet_stormdust_mass(:,:)=0. |
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| 216 | dqdet_stormdust_number(:,:)=0. |
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| 217 | wrad(:,:)=0. |
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| 218 | w(:,:)=0. |
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| 219 | wqmass(:,:)=0. |
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| 220 | wqnumber(:,:)=0. |
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| 221 | zdtvert(:,:)=0. |
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| 222 | lapserate(:,:)=0. |
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| 223 | deltahr(:,:)=0. |
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| 224 | scheme(:)=0 |
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| 225 | detrain(:,:)=1. |
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| 226 | |
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| 227 | !! no update for the stormdust tracer and temperature fields |
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| 228 | !! because previous callradite was for background dust |
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| 229 | zq(1:ngrid,1:nlayer,1:nq)=pq(1:ngrid,1:nlayer,1:nq) |
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| 230 | zt(1:ngrid,1:nlayer)=pt(1:ngrid,1:nlayer) |
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| 231 | |
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| 232 | |
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| 233 | zq_dust_mass(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_dust_mass) |
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| 234 | zq_dust_number(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_dust_number) |
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| 235 | zq_stormdust_mass(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_stormdust_mass) |
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| 236 | zq_stormdust_number(1:ngrid,1:nlayer)=zq(1:ngrid,1:nlayer,igcm_stormdust_number) |
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| 237 | |
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| 238 | ! ********************************************************************* |
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| 239 | ! 0. Check if there is a storm |
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| 240 | ! ********************************************************************* |
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| 241 | DO ig=1,ngrid |
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| 242 | storm(ig)=.false. |
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| 243 | DO l=1,nlayer |
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| 244 | IF (zq(ig,l,igcm_stormdust_mass) & |
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| 245 | .gt. zq(ig,l,igcm_dust_mass)*(1.E-4)) THEN |
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| 246 | storm(ig)=.true. |
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| 247 | EXIT |
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| 248 | ENDIF |
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| 249 | ENDDO |
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| 250 | ENDDO |
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| 251 | |
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| 252 | ! ********************************************************************* |
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| 253 | ! 1. Call the second radiative transfer for stormdust, obtain the extra heating |
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| 254 | ! ********************************************************************* |
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| 255 | CALL callradite(icount,ngrid,nlayer,nq,zday,zls,pq,albedo, & |
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| 256 | emis,mu0,pplev,pplay,pt,tsurf,fract,dist_sol,igout, & |
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| 257 | zdtlw1,zdtsw1,fluxsurf_lw1,fluxsurf_dn_sw1,fluxsurf_up_sw1, & |
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| 258 | fluxtop_lw1,fluxtop_dn_sw1,fluxtop_up_sw1, & |
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| 259 | tau_pref_scenario,tau_pref_gcm, & |
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| 260 | tau,aerosol,dsodust,tauscaling,dust_rad_adjust,IRtoVIScoef, & |
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| 261 | taucloudtes,rdust,rice,nuice,riceco2,nuiceco2,co2ice,rstormdust,rtopdust, & |
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| 262 | totstormfract,clearatm,dsords,dsotop,nohmons,& |
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| 263 | clearsky,totcloudfrac) |
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| 264 | |
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| 265 | ! ********************************************************************** |
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| 266 | ! 2. Compute vertical velocity for storm dust |
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| 267 | ! ********************************************************************** |
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| 268 | !! ********************************************************************** |
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| 269 | !! 2.1 Nothing to do when no storm |
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| 270 | !! no storm |
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| 271 | DO ig=1,ngrid |
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| 272 | IF (.NOT.(storm(ig))) then |
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| 273 | scheme(ig)=1 |
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| 274 | cycle |
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| 275 | ENDIF ! IF (storm(ig)) |
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| 276 | ENDDO ! DO ig=1,ngrid |
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| 277 | |
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| 278 | !! ********************************************************************** |
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| 279 | !! 2.2 Calculation of the extra heating : computing heating rates |
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| 280 | !! gradient at boundaries of each layer, start from surface |
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| 281 | DO ig=1,ngrid |
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| 282 | IF (storm(ig)) THEN |
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| 283 | |
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| 284 | scheme(ig)=2 |
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| 285 | |
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| 286 | !! computing heating rates gradient at boundraies of each layer |
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| 287 | !! start from surface |
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| 288 | zdtlw1_lev(1)=0. |
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| 289 | zdtsw1_lev(1)=0. |
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| 290 | zdtlw_lev(1)=0. |
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| 291 | zdtsw_lev(1)=0. |
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| 292 | ztlev(ig,1)=zt(ig,1) |
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| 293 | |
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| 294 | DO l=1,nlayer-1 |
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| 295 | !! Calculation for the dust storm fraction |
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| 296 | zdtlw1_lev(l+1)=(zdtlw1(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ & |
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| 297 | zdtlw1(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / & |
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| 298 | (pzlay(ig,l+1)-pzlay(ig,l)) |
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| 299 | |
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| 300 | zdtsw1_lev(l+1)=(zdtsw1(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ & |
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| 301 | zdtsw1(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / & |
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| 302 | (pzlay(ig,l+1)-pzlay(ig,l)) |
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| 303 | !! Calculation for the background dust fraction |
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| 304 | zdtlw_lev(l+1)=(pdtlw(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ & |
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| 305 | pdtlw(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / & |
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| 306 | (pzlay(ig,l+1)-pzlay(ig,l)) |
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| 307 | |
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| 308 | zdtsw_lev(l+1)=(pdtsw(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ & |
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| 309 | pdtsw(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / & |
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| 310 | (pzlay(ig,l+1)-pzlay(ig,l)) |
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| 311 | |
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| 312 | ztlev(ig,l+1)=(zt(ig,l)*(pzlay(ig,l+1)-pzlev(ig,l+1))+ & |
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| 313 | zt(ig,l+1)*(pzlev(ig,l+1)-pzlay(ig,l))) / & |
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| 314 | (pzlay(ig,l+1)-pzlay(ig,l)) |
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| 315 | ENDDO ! DO l=1,nlayer-1 |
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| 316 | |
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| 317 | !! This is the env. lapse rate |
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| 318 | zdtvert(ig,1)=0. |
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| 319 | DO l=1,nlayer-1 |
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| 320 | zdtvert(ig,l+1)=(ztlev(ig,l+1)-ztlev(ig,l))/(pzlay(ig,l+1)-pzlay(ig,l)) |
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| 321 | lapserate(ig,l+1)=zdtvert(ig,l+1) |
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| 322 | ENDDO |
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| 323 | |
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| 324 | !! ********************************************************************** |
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| 325 | !! 2.3 Calculation of the vertical velocity : extra heating |
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| 326 | !! balanced by adiabatic cooling |
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| 327 | |
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| 328 | DO l=1,nlayer |
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| 329 | deltahr(ig,l)=(zdtlw1_lev(l)+zdtsw1_lev(l)) & |
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| 330 | -(zdtlw_lev(l)+zdtsw_lev(l)) |
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| 331 | wrad(ig,l)=-deltahr(ig,l)/(g/cpp+ & |
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| 332 | max(zdtvert(ig,l),-0.99*g/cpp)) |
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| 333 | !! Limit vertical wind in case of lapse rate close to adiabatic |
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| 334 | wrad(ig,l)=max(wrad(ig,l),-wmax) |
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| 335 | wrad(ig,l)=min(wrad(ig,l),wmax) |
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| 336 | ENDDO |
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| 337 | |
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| 338 | ENDIF ! IF (storm(ig)) |
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| 339 | ENDDO ! DO ig=1,ngrid |
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| 340 | |
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| 341 | ! ********************************************************************** |
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| 342 | ! 3. Vertical transport |
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| 343 | ! ********************************************************************** |
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| 344 | !! ********************************************************************** |
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| 345 | !! 3.1 Transport of background dust + storm dust (concentrated) |
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| 346 | DO ig=1,ngrid |
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| 347 | IF (storm(ig)) THEN |
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| 348 | DO l=1,nlayer |
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| 349 | mr_dust_mass(ig,l) = zq_dust_mass(ig,l) |
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| 350 | mr_dust_number(ig,l) = zq_dust_number(ig,l) |
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| 351 | mr_stormdust_mass(ig,l) = zq_dust_mass(ig,l)+ & |
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| 352 | zq_stormdust_mass(ig,l)/totstormfract(ig) |
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| 353 | mr_stormdust_number(ig,l) = zq_dust_number(ig,l)+ & |
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| 354 | zq_stormdust_number(ig,l)/totstormfract(ig) |
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| 355 | ENDDO ! DO l=1,nlayer |
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| 356 | ENDIF ! IF (storm(ig)) |
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| 357 | ENDDO ! DO ig=1,ngrid |
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| 358 | |
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| 359 | DO ig=1,ngrid |
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| 360 | IF (storm(ig)) THEN |
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| 361 | !! ********************************************************************** |
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| 362 | !! 3.2 Compute the subtimestep to conserve the mass in the Van Leer transport |
|---|
| 363 | dtmax=ptimestep |
|---|
| 364 | DO l=2,nlayer |
|---|
| 365 | IF (wrad(ig,l).lt.0.) THEN |
|---|
| 366 | dtmax=min(dtmax,(pzlev(ig,l)-pzlev(ig,l-1))/ & |
|---|
| 367 | (secu*abs(wrad(ig,l)))) |
|---|
| 368 | ELSE IF (wrad(ig,l).gt.0.) then |
|---|
| 369 | dtmax=min(dtmax,(pzlev(ig,l+1)-pzlev(ig,l))/ & |
|---|
| 370 | (secu*abs(wrad(ig,l)))) |
|---|
| 371 | ENDIF |
|---|
| 372 | ENDDO |
|---|
| 373 | nsubtimestep= int(ptimestep/dtmax) |
|---|
| 374 | subtimestep=ptimestep/float(nsubtimestep) |
|---|
| 375 | !! Mass flux generated by wup in kg/m2 |
|---|
| 376 | DO l=1,nlayer |
|---|
| 377 | w(ig,l)=wrad(ig,l)*pplev(ig,l)/(r*ztlev(ig,l)) & |
|---|
| 378 | *subtimestep |
|---|
| 379 | ENDDO ! l=1,nlayer |
|---|
| 380 | |
|---|
| 381 | !! ********************************************************************** |
|---|
| 382 | !! 3.3 Vertical transport by a Van Leer scheme |
|---|
| 383 | !! Mass of atmosphere in the layer |
|---|
| 384 | DO l=1,nlayer |
|---|
| 385 | masse_col(l)=(pplev(ig,l)-pplev(ig,l+1))/g |
|---|
| 386 | ENDDO |
|---|
| 387 | !! Mass flux in kg/m2 if you are not using the subtimestep |
|---|
| 388 | !DO l=1,nlayer |
|---|
| 389 | ! w(ig,l)=wrad(ig,l)*(pplev(ig,l)/(r*ztlev(ig,l)))*ptimestep |
|---|
| 390 | !ENDDO |
|---|
| 391 | !! Loop over the subtimestep |
|---|
| 392 | DO tsub=1,nsubtimestep |
|---|
| 393 | !! Van Leer scheme |
|---|
| 394 | wqmass(ig,:)=0. |
|---|
| 395 | wqnumber(ig,:)=0. |
|---|
| 396 | CALL van_leer(nlayer,mr_stormdust_mass(ig,:),2., & |
|---|
| 397 | masse_col,w(ig,:),wqmass(ig,:)) |
|---|
| 398 | CALL van_leer(nlayer,mr_stormdust_number(ig,:),2., & |
|---|
| 399 | masse_col,w(ig,:),wqnumber(ig,:)) |
|---|
| 400 | ENDDO !tsub=... |
|---|
| 401 | |
|---|
| 402 | ENDIF ! IF storm(ig) |
|---|
| 403 | ENDDO ! DO ig=1,ngrid |
|---|
| 404 | |
|---|
| 405 | !! ********************************************************************** |
|---|
| 406 | !! 3.4 Re-calculation of the mixing ratios after vertical transport |
|---|
| 407 | DO ig=1,ngrid |
|---|
| 408 | IF (storm(ig)) THEN |
|---|
| 409 | DO l=1,nlayer |
|---|
| 410 | |
|---|
| 411 | !! General and "healthy" case |
|---|
| 412 | IF (mr_stormdust_mass(ig,l).ge.mr_dust_mass(ig,l)) THEN |
|---|
| 413 | zq_dust_mass(ig,l) = mr_dust_mass(ig,l) |
|---|
| 414 | zq_dust_number(ig,l) = mr_dust_number(ig,l) |
|---|
| 415 | zq_stormdust_mass(ig,l) = totstormfract(ig)*(mr_stormdust_mass(ig,l)-mr_dust_mass(ig,l)) |
|---|
| 416 | zq_stormdust_number(ig,l) = totstormfract(ig)*(mr_stormdust_number(ig,l)-mr_dust_number(ig,l)) |
|---|
| 417 | !! Particular case: there is less than initial dust mixing ratio after the vertical transport |
|---|
| 418 | ELSE |
|---|
| 419 | zq_dust_mass(ig,l) = (1.-totstormfract(ig))*mr_dust_mass(ig,l)+totstormfract(ig)*mr_stormdust_mass(ig,l) |
|---|
| 420 | zq_dust_number(ig,l) = (1.-totstormfract(ig))*mr_dust_number(ig,l)+totstormfract(ig)*mr_stormdust_number(ig,l) |
|---|
| 421 | zq_stormdust_mass(ig,l) = 0. |
|---|
| 422 | zq_stormdust_number(ig,l) = 0. |
|---|
| 423 | ENDIF |
|---|
| 424 | |
|---|
| 425 | ENDDO ! DO l=1,nlayer |
|---|
| 426 | ENDIF ! IF storm(ig) |
|---|
| 427 | ENDDO ! DO ig=1,ngrid |
|---|
| 428 | |
|---|
| 429 | !! ********************************************************************** |
|---|
| 430 | !! 3.5 Calculation of the tendencies of the vertical transport |
|---|
| 431 | DO ig=1,ngrid |
|---|
| 432 | IF (storm(ig)) THEN |
|---|
| 433 | DO l=1,nlayer |
|---|
| 434 | dqvl_stormdust_mass(ig,l) = (zq_stormdust_mass(ig,l)- & |
|---|
| 435 | zq(ig,l,igcm_stormdust_mass)) /ptimestep |
|---|
| 436 | dqvl_stormdust_number(ig,l) = (zq_stormdust_number(ig,l)- & |
|---|
| 437 | zq(ig,l,igcm_stormdust_number)) /ptimestep |
|---|
| 438 | dqvl_dust_mass(ig,l) = (zq_dust_mass(ig,l)-zq(ig,l,igcm_dust_mass)) /ptimestep |
|---|
| 439 | dqvl_dust_number(ig,l) = (zq_dust_number(ig,l)-zq(ig,l,igcm_dust_number)) /ptimestep |
|---|
| 440 | ENDDO |
|---|
| 441 | ENDIF ! IF storm(ig) |
|---|
| 442 | ENDDO ! DO ig=1,ngrid |
|---|
| 443 | |
|---|
| 444 | ! ********************************************************************** |
|---|
| 445 | ! 4. Detrainment: stormdust is converted to background dust |
|---|
| 446 | ! ********************************************************************** |
|---|
| 447 | !! ********************************************************************** |
|---|
| 448 | !! 4.1 Compute the coefficient of detrainmen |
|---|
| 449 | DO ig=1,ngrid |
|---|
| 450 | DO l=1,nlayer |
|---|
| 451 | IF ((max(abs(wrad(ig,l)),abs(wrad(ig,l+1))) .lt. & |
|---|
| 452 | wmin) .or. (zq_dust_mass(ig,l) .gt. & |
|---|
| 453 | 10000.*zq_stormdust_mass(ig,l))) THEN |
|---|
| 454 | detrain(ig,l)=1. |
|---|
| 455 | ELSE IF (max(abs(wrad(ig,l)),abs(wrad(ig,l+1))) & |
|---|
| 456 | .le. wmax) THEN |
|---|
| 457 | detrain(ig,l)=coeff_detrainment* & |
|---|
| 458 | (((1-coefmin)/(wmin-wmax)**2)* & |
|---|
| 459 | (max(abs(wrad(ig,l)),abs(wrad(ig,l+1)))-wmax)**2 & |
|---|
| 460 | +coefmin) |
|---|
| 461 | ELSE IF (max(abs(wrad(ig,l)),abs(wrad(ig,l+1))).gt. wmax ) THEN |
|---|
| 462 | detrain(ig,l)=coefmin |
|---|
| 463 | ELSE |
|---|
| 464 | detrain(ig,l)=coefmin |
|---|
| 465 | ENDIF |
|---|
| 466 | ENDDO ! DO l=1,nlayer |
|---|
| 467 | ENDDO ! DO ig=1,ngrid |
|---|
| 468 | |
|---|
| 469 | !! ********************************************************************** |
|---|
| 470 | !! 4.2 Calculation of the tendencies of the detrainment |
|---|
| 471 | DO ig=1,ngrid |
|---|
| 472 | DO l=1,nlayer |
|---|
| 473 | dqdet_stormdust_mass(ig,l)=-detrain(ig,l)*zq_stormdust_mass(ig,l) & |
|---|
| 474 | /ptimestep |
|---|
| 475 | dqdet_stormdust_number(ig,l)=-detrain(ig,l)*zq_stormdust_number(ig,l) & |
|---|
| 476 | /ptimestep |
|---|
| 477 | ENDDO ! DO l=1,nlayer |
|---|
| 478 | ENDDO ! DO ig=1,ngrid |
|---|
| 479 | |
|---|
| 480 | ! ********************************************************************** |
|---|
| 481 | ! 5. Final tendencies: vertical transport + detrainment |
|---|
| 482 | ! ********************************************************************** |
|---|
| 483 | DO ig=1,ngrid |
|---|
| 484 | DO l=1,nlayer |
|---|
| 485 | pdqrds(ig,l,igcm_stormdust_mass)=dqdet_stormdust_mass(ig,l) & |
|---|
| 486 | +dqvl_stormdust_mass(ig,l) |
|---|
| 487 | pdqrds(ig,l,igcm_stormdust_number)=dqdet_stormdust_number(ig,l) & |
|---|
| 488 | +dqvl_stormdust_number(ig,l) |
|---|
| 489 | pdqrds(ig,l,igcm_dust_mass)= -dqdet_stormdust_mass(ig,l) & |
|---|
| 490 | +dqvl_dust_mass(ig,l) |
|---|
| 491 | pdqrds(ig,l,igcm_dust_number)= -dqdet_stormdust_number(ig,l) & |
|---|
| 492 | +dqvl_dust_number(ig,l) |
|---|
| 493 | ENDDO ! DO l=1,nlayer |
|---|
| 494 | ENDDO ! DO ig=1,ngrid |
|---|
| 495 | |
|---|
| 496 | ! ! ********************************************************************** |
|---|
| 497 | ! ! 6. To prevent from negative values |
|---|
| 498 | ! ! ********************************************************************** |
|---|
| 499 | ! DO ig=1,ngrid |
|---|
| 500 | ! DO l=1,nlayer |
|---|
| 501 | ! IF ((pq(ig,l,igcm_stormdust_mass) & |
|---|
| 502 | ! +pdqrds(ig,l,igcm_stormdust_mass)*ptimestep .le. 0.) .or. & |
|---|
| 503 | ! (pq(ig,l,igcm_stormdust_number) & |
|---|
| 504 | ! +pdqrds(ig,l,igcm_stormdust_number)*ptimestep .le. 0.)) THEN |
|---|
| 505 | ! pdqrds(ig,l,igcm_stormdust_mass)=-pq(ig,l,igcm_stormdust_mass)/ptimestep |
|---|
| 506 | ! pdqrds(ig,l,igcm_stormdust_number)=-pq(ig,l,igcm_stormdust_number)/ptimestep |
|---|
| 507 | ! ENDIF |
|---|
| 508 | ! ENDDO ! nlayer |
|---|
| 509 | ! ENDDO ! DO ig=1,ngrid |
|---|
| 510 | ! |
|---|
| 511 | ! DO ig=1,ngrid |
|---|
| 512 | ! DO l=1,nlayer |
|---|
| 513 | ! IF ((pq(ig,l,igcm_dust_mass) & |
|---|
| 514 | ! +pdqrds(ig,l,igcm_dust_mass)*ptimestep .le. 0.) .or. & |
|---|
| 515 | ! (pq(ig,l,igcm_dust_number) & |
|---|
| 516 | ! +pdqrds(ig,l,igcm_dust_number)*ptimestep .le. 0.)) THEN |
|---|
| 517 | ! pdqrds(ig,l,igcm_dust_mass)=-pq(ig,l,igcm_dust_mass)/ptimestep |
|---|
| 518 | ! pdqrds(ig,l,igcm_dust_number)=-pq(ig,l,igcm_dust_number)/ptimestep |
|---|
| 519 | ! ENDIF |
|---|
| 520 | ! ENDDO ! nlayer |
|---|
| 521 | ! ENDDO ! DO ig=1,ngrid |
|---|
| 522 | |
|---|
| 523 | !======================================================================= |
|---|
| 524 | ! WRITEDIAGFI |
|---|
| 525 | |
|---|
| 526 | call WRITEDIAGFI(ngrid,'lapserate','lapse rate in the storm', & |
|---|
| 527 | & 'k/m',3,lapserate) |
|---|
| 528 | call WRITEDIAGFI(ngrid,'deltahr','extra heating rates', & |
|---|
| 529 | & 'K/s',3,deltahr) |
|---|
| 530 | call writediagfi(ngrid,'scheme','which scheme',& |
|---|
| 531 | ' ',2,real(scheme)) |
|---|
| 532 | |
|---|
| 533 | END SUBROUTINE rocketduststorm |
|---|
| 534 | |
|---|
| 535 | !======================================================================= |
|---|
| 536 | ! ********************************************************************** |
|---|
| 537 | ! Subroutine to determine the vertical transport with |
|---|
| 538 | ! a Van Leer advection scheme (copied from the sedimentation scheme --> see vlz_fi.F) |
|---|
| 539 | !*********************************************************************** |
|---|
| 540 | SUBROUTINE van_leer(nlay,q,pente_max,masse,w,wq) |
|---|
| 541 | |
|---|
| 542 | IMPLICIT NONE |
|---|
| 543 | |
|---|
| 544 | !-------------------------------------------------------- |
|---|
| 545 | ! Input/Output Variables |
|---|
| 546 | !-------------------------------------------------------- |
|---|
| 547 | INTEGER,INTENT(IN) :: nlay ! number of atmospheric layers |
|---|
| 548 | REAL,INTENT(IN) :: masse(nlay) ! mass of the layer Dp/g |
|---|
| 549 | REAL,INTENT(IN) :: pente_max != 2 conseillee |
|---|
| 550 | REAL,INTENT(INOUT) :: q(nlay) ! mixing ratio (kg/kg) |
|---|
| 551 | REAL,INTENT(INOUT) :: w(nlay) ! atmospheric mass "transferred" at each timestep (kg.m-2) |
|---|
| 552 | REAL,INTENT(INOUT) :: wq(nlay+1) |
|---|
| 553 | |
|---|
| 554 | !-------------------------------------------------------- |
|---|
| 555 | ! Local Variables |
|---|
| 556 | !-------------------------------------------------------- |
|---|
| 557 | |
|---|
| 558 | INTEGER i,l,j,ii |
|---|
| 559 | REAL dzq(nlay),dzqw(nlay),adzqw(nlay),dzqmax |
|---|
| 560 | REAL newmasse |
|---|
| 561 | REAL sigw, Mtot, MQtot |
|---|
| 562 | INTEGER m |
|---|
| 563 | |
|---|
| 564 | ! ********************************************************************** |
|---|
| 565 | ! Mixing ratio vertical gradient at the levels |
|---|
| 566 | ! ********************************************************************** |
|---|
| 567 | do l=2,nlay |
|---|
| 568 | dzqw(l)=q(l-1)-q(l) |
|---|
| 569 | adzqw(l)=abs(dzqw(l)) |
|---|
| 570 | enddo |
|---|
| 571 | |
|---|
| 572 | do l=2,nlay-1 |
|---|
| 573 | if(dzqw(l)*dzqw(l+1).gt.0.) then |
|---|
| 574 | dzq(l)=0.5*(dzqw(l)+dzqw(l+1)) |
|---|
| 575 | else |
|---|
| 576 | dzq(l)=0. |
|---|
| 577 | endif |
|---|
| 578 | dzqmax=pente_max*min(adzqw(l),adzqw(l+1)) |
|---|
| 579 | dzq(l)=sign(min(abs(dzq(l)),dzqmax),dzq(l)) |
|---|
| 580 | enddo |
|---|
| 581 | |
|---|
| 582 | dzq(1)=0. |
|---|
| 583 | dzq(nlay)=0. |
|---|
| 584 | |
|---|
| 585 | ! ********************************************************************** |
|---|
| 586 | ! Vertical advection |
|---|
| 587 | ! ********************************************************************** |
|---|
| 588 | |
|---|
| 589 | !! No flux at the model top: |
|---|
| 590 | wq(nlay+1)=0. |
|---|
| 591 | |
|---|
| 592 | !! Surface flux up: |
|---|
| 593 | if(w(1).lt.0.) wq(1)=0. ! warning : not always valid |
|---|
| 594 | |
|---|
| 595 | do l = 1,nlay-1 |
|---|
| 596 | |
|---|
| 597 | ! 1) Compute wq where w < 0 (up) (UPWARD TRANSPORT) |
|---|
| 598 | ! =============================== |
|---|
| 599 | |
|---|
| 600 | if(w(l+1).le.0)then |
|---|
| 601 | ! Regular scheme (transfered mass < 1 layer) |
|---|
| 602 | ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
|---|
| 603 | if(-w(l+1).le.masse(l))then |
|---|
| 604 | sigw=w(l+1)/masse(l) |
|---|
| 605 | wq(l+1)=w(l+1)*(q(l)-0.5*(1.+sigw)*dzq(l)) |
|---|
| 606 | !!------------------------------------------------------- |
|---|
| 607 | ! The following part should not be needed in the |
|---|
| 608 | ! case of an integration over subtimesteps |
|---|
| 609 | !!------------------------------------------------------- |
|---|
| 610 | ! Extended scheme (transfered mass > 1 layer) |
|---|
| 611 | ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
|---|
| 612 | else |
|---|
| 613 | m = l-1 |
|---|
| 614 | Mtot = masse(m+1) |
|---|
| 615 | MQtot = masse(m+1)*q(m+1) |
|---|
| 616 | if (m.le.0)goto 77 |
|---|
| 617 | do while(-w(l+1).gt.(Mtot+masse(m))) |
|---|
| 618 | ! do while(-w(l+1).gt.Mtot) |
|---|
| 619 | m=m-1 |
|---|
| 620 | Mtot = Mtot + masse(m+1) |
|---|
| 621 | MQtot = MQtot + masse(m+1)*q(m+1) |
|---|
| 622 | if (m.le.0)goto 77 |
|---|
| 623 | end do |
|---|
| 624 | 77 continue |
|---|
| 625 | |
|---|
| 626 | if (m.gt.0) then |
|---|
| 627 | sigw=(w(l+1)+Mtot)/masse(m) |
|---|
| 628 | wq(l+1)= -(MQtot + (-w(l+1)-Mtot)* & |
|---|
| 629 | (q(m)-0.5*(1.+sigw)*dzq(m)) ) |
|---|
| 630 | else |
|---|
| 631 | w(l+1) = -Mtot |
|---|
| 632 | wq(l+1) = -MQtot |
|---|
| 633 | end if |
|---|
| 634 | endif ! (-w(l+1).le.masse(l)) |
|---|
| 635 | |
|---|
| 636 | ! 2) Compute wq where w > 0 (down) (DOWNWARD TRANSPORT) |
|---|
| 637 | ! =============================== |
|---|
| 638 | |
|---|
| 639 | else if(w(l).gt.0.)then |
|---|
| 640 | |
|---|
| 641 | ! Regular scheme (transfered mass < 1 layer) |
|---|
| 642 | ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
|---|
| 643 | if(w(l).le.masse(l))then |
|---|
| 644 | sigw=w(l)/masse(l) |
|---|
| 645 | wq(l)=w(l)*(q(l)+0.5*(1.-sigw)*dzq(l)) |
|---|
| 646 | !!------------------------------------------------------- |
|---|
| 647 | ! The following part should not be needed in the |
|---|
| 648 | ! case of an integration over subtimesteps |
|---|
| 649 | !!------------------------------------------------------- |
|---|
| 650 | ! Extended scheme (transfered mass > 1 layer) |
|---|
| 651 | ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
|---|
| 652 | else |
|---|
| 653 | m=l |
|---|
| 654 | Mtot = masse(m) |
|---|
| 655 | MQtot = masse(m)*q(m) |
|---|
| 656 | if(m.ge.nlay)goto 88 |
|---|
| 657 | do while(w(l).gt.(Mtot+masse(m+1))) |
|---|
| 658 | m=m+1 |
|---|
| 659 | Mtot = Mtot + masse(m) |
|---|
| 660 | MQtot = MQtot + masse(m)*q(m) |
|---|
| 661 | if(m.ge.nlay)goto 88 |
|---|
| 662 | end do |
|---|
| 663 | 88 continue |
|---|
| 664 | if (m.lt.nlay) then |
|---|
| 665 | sigw=(w(l)-Mtot)/masse(m+1) |
|---|
| 666 | wq(l)=(MQtot + (w(l)-Mtot)* & |
|---|
| 667 | (q(m+1)+0.5*(1.-sigw)*dzq(m+1)) ) |
|---|
| 668 | else |
|---|
| 669 | w(l) = Mtot |
|---|
| 670 | wq(l) = MQtot |
|---|
| 671 | end if |
|---|
| 672 | end if |
|---|
| 673 | |
|---|
| 674 | end if ! w<0 (up) |
|---|
| 675 | |
|---|
| 676 | enddo ! l = 1,nlay-1 |
|---|
| 677 | |
|---|
| 678 | do l = 1,nlay |
|---|
| 679 | |
|---|
| 680 | ! it cannot entrain more than available mass ! |
|---|
| 681 | if ( (wq(l+1)-wq(l)) .lt. -(masse(l)*q(l)) ) then |
|---|
| 682 | wq(l+1) = wq(l)-masse(l)*q(l) |
|---|
| 683 | end if |
|---|
| 684 | |
|---|
| 685 | q(l)=q(l) + (wq(l+1)-wq(l))/masse(l) |
|---|
| 686 | |
|---|
| 687 | enddo |
|---|
| 688 | |
|---|
| 689 | END SUBROUTINE van_leer |
|---|
| 690 | |
|---|
| 691 | !======================================================================= |
|---|
| 692 | ! Initialization of the module variables |
|---|
| 693 | |
|---|
| 694 | subroutine ini_rocketduststorm_mod(ngrid) |
|---|
| 695 | |
|---|
| 696 | implicit none |
|---|
| 697 | |
|---|
| 698 | integer, intent(in) :: ngrid |
|---|
| 699 | |
|---|
| 700 | allocate(dustliftday(ngrid)) |
|---|
| 701 | |
|---|
| 702 | end subroutine ini_rocketduststorm_mod |
|---|
| 703 | |
|---|
| 704 | subroutine end_rocketduststorm_mod |
|---|
| 705 | |
|---|
| 706 | implicit none |
|---|
| 707 | |
|---|
| 708 | if (allocated(dustliftday)) deallocate(dustliftday) |
|---|
| 709 | |
|---|
| 710 | end subroutine end_rocketduststorm_mod |
|---|
| 711 | |
|---|
| 712 | END MODULE rocketduststorm_mod |
|---|
