| 1 | MODULE compute_dtau_mod |
|---|
| 2 | |
|---|
| 3 | IMPLICIT NONE |
|---|
| 4 | |
|---|
| 5 | include "callkeys.h" |
|---|
| 6 | |
|---|
| 7 | REAL,SAVE :: ti_injection_sol ! time of beginning injection |
|---|
| 8 | REAL,SAVE :: tf_injection_sol ! time of end injection |
|---|
| 9 | REAL,PARAMETER :: t_scenario_sol=14/24. ! time of tauref_scenario |
|---|
| 10 | |
|---|
| 11 | REAL,SAVE,ALLOCATABLE :: dtau(:) ! Dust opacity difference (at 610Pa) |
|---|
| 12 | ! between GCM and dust scenario |
|---|
| 13 | |
|---|
| 14 | CONTAINS |
|---|
| 15 | |
|---|
| 16 | SUBROUTINE compute_dtau(ngrid,nlayer, & |
|---|
| 17 | zday,pplev,tauref, & |
|---|
| 18 | ptimestep,dustliftday,local_time) |
|---|
| 19 | |
|---|
| 20 | USE geometry_mod, only: longitude_deg |
|---|
| 21 | USE time_phylmdz_mod, only: dtphys, daysec |
|---|
| 22 | USE comcstfi_h, only: g |
|---|
| 23 | USE tracer_mod, only: alpha_lift,igcm_dust_mass,igcm_dust_number |
|---|
| 24 | USE dimradmars_mod, only: tauvis |
|---|
| 25 | |
|---|
| 26 | IMPLICIT NONE |
|---|
| 27 | |
|---|
| 28 | include "callkeys.h" |
|---|
| 29 | |
|---|
| 30 | INTEGER, INTENT(in) :: ngrid |
|---|
| 31 | INTEGER, INTENT(in) :: nlayer |
|---|
| 32 | REAL, INTENT(in) :: zday ! date at lon=0, in fraction of sols |
|---|
| 33 | REAL, INTENT(in) :: pplev(ngrid,nlayer+1) ! pressure (Pa) |
|---|
| 34 | REAL, INTENT(in) :: tauref(ngrid) ! Computed dust opacity at 610Pa |
|---|
| 35 | REAL, INTENT(in) :: ptimestep |
|---|
| 36 | REAL, INTENT(in) :: local_time(ngrid) |
|---|
| 37 | REAL, INTENT(out) :: dustliftday(ngrid) ! Dust injection rate (s-1) |
|---|
| 38 | |
|---|
| 39 | INTEGER :: ig, l |
|---|
| 40 | INTEGER, SAVE :: nb_daystep ! nomber of step a day |
|---|
| 41 | REAL :: tauref_scenario(ngrid) ! from dust scenario |
|---|
| 42 | REAL :: zday_scenario |
|---|
| 43 | REAL,ALLOCATABLE,SAVE :: local_time_prev(:) |
|---|
| 44 | REAL,PARAMETER :: odpref=610. !DOD reference pressure (Pa) |
|---|
| 45 | |
|---|
| 46 | LOGICAL, SAVE :: firstcall=.TRUE. ! signals first call to physics |
|---|
| 47 | |
|---|
| 48 | |
|---|
| 49 | IF(firstcall)THEN |
|---|
| 50 | ALLOCATE(local_time_prev(ngrid)) |
|---|
| 51 | DO ig=1,ngrid |
|---|
| 52 | local_time_prev(ig)=modulo(1.+(zday-ptimestep/daysec)& |
|---|
| 53 | -INT(zday-ptimestep/daysec) & |
|---|
| 54 | +(longitude_deg(ig)/15)/24,1.) |
|---|
| 55 | ENDDO |
|---|
| 56 | nb_daystep=(daysec/dtphys) |
|---|
| 57 | ! Local time in sol fraction |
|---|
| 58 | ti_injection_sol=ti_injection/24. |
|---|
| 59 | tf_injection_sol=tf_injection/24. |
|---|
| 60 | firstcall=.FALSE. |
|---|
| 61 | ENDIF |
|---|
| 62 | |
|---|
| 63 | ! 1. Obtain tauref_scenario from dust scenario at zday+1 |
|---|
| 64 | if (iaervar.eq.1) then |
|---|
| 65 | tauref_scenario = tauvis |
|---|
| 66 | else |
|---|
| 67 | zday_scenario=zday-modulo(zday,1.) ! integer value of the day: the scenario opacity is measured at 14:00 |
|---|
| 68 | zday_scenario=zday_scenario+1 ! opacity of the dust scenario is read the day after |
|---|
| 69 | call read_dust_scenario(ngrid,nlayer,zday_scenario,pplev, & |
|---|
| 70 | tauref_scenario) |
|---|
| 71 | endif |
|---|
| 72 | ! for diagnostics |
|---|
| 73 | call WRITEDIAGFI(ngrid,"tauref_scenario","tauref_scenario", & |
|---|
| 74 | "",2,tauref_scenario) |
|---|
| 75 | |
|---|
| 76 | ! 2. Compute dtau() and dustliftday() |
|---|
| 77 | DO ig=1,ngrid |
|---|
| 78 | IF ((local_time(ig).ge.t_scenario_sol).and. & |
|---|
| 79 | (local_time_prev(ig).lt.(t_scenario_sol)))THEN |
|---|
| 80 | dtau(ig)=tauref_scenario(ig)-tauref(ig) |
|---|
| 81 | ENDIF |
|---|
| 82 | |
|---|
| 83 | ! Use dtau (when positiove) to compute dustliftday |
|---|
| 84 | IF (dtau(ig).LT.0) THEN |
|---|
| 85 | dustliftday(ig)=0. |
|---|
| 86 | ELSE |
|---|
| 87 | dustliftday(ig)=coeff_injection* & |
|---|
| 88 | (dtau(ig)*pplev(ig,1)/odpref) & |
|---|
| 89 | /(daysec*(tf_injection_sol-ti_injection_sol)) |
|---|
| 90 | ENDIF |
|---|
| 91 | ENDDO ! of DO ig=1,ngrid |
|---|
| 92 | |
|---|
| 93 | ! for diagnostics |
|---|
| 94 | call WRITEDIAGFI(ngrid,"dtau","opacity difference wrt scenario",& |
|---|
| 95 | "",2,dtau) |
|---|
| 96 | call WRITEDIAGFI(ngrid,"dustliftday","dust injection rate", & |
|---|
| 97 | "s-1",2,dustliftday) |
|---|
| 98 | |
|---|
| 99 | ! 4. Save local time |
|---|
| 100 | local_time_prev(1:ngrid)=local_time(1:ngrid) |
|---|
| 101 | |
|---|
| 102 | end subroutine compute_dtau |
|---|
| 103 | |
|---|
| 104 | !======================================================================= |
|---|
| 105 | ! Initialization of the module variables |
|---|
| 106 | |
|---|
| 107 | subroutine ini_compute_dtau_mod(ngrid) |
|---|
| 108 | |
|---|
| 109 | implicit none |
|---|
| 110 | |
|---|
| 111 | integer, intent(in) :: ngrid |
|---|
| 112 | |
|---|
| 113 | allocate(dtau(ngrid)) |
|---|
| 114 | |
|---|
| 115 | end subroutine ini_compute_dtau_mod |
|---|
| 116 | |
|---|
| 117 | subroutine end_compute_dtau_mod |
|---|
| 118 | |
|---|
| 119 | implicit none |
|---|
| 120 | |
|---|
| 121 | if (allocated(dtau)) deallocate(dtau) |
|---|
| 122 | |
|---|
| 123 | end subroutine end_compute_dtau_mod |
|---|
| 124 | |
|---|
| 125 | END MODULE compute_dtau_mod |
|---|
