[3526] | 1 | ! |
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| 2 | ! $Id: traccoag_mod.F90 4601 2023-06-30 22:07:30Z lfalletti $ |
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| 3 | ! |
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[2690] | 4 | MODULE traccoag_mod |
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| 5 | ! |
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| 6 | ! This module calculates the concentration of aerosol particles in certain size bins |
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| 7 | ! considering coagulation and sedimentation. |
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| 8 | ! |
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| 9 | CONTAINS |
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| 10 | |
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| 11 | SUBROUTINE traccoag(pdtphys, gmtime, debutphy, julien, & |
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| 12 | presnivs, xlat, xlon, pphis, pphi, & |
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[2752] | 13 | t_seri, pplay, paprs, sh, rh, tr_seri) |
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[2690] | 14 | |
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[2752] | 15 | USE phys_local_var_mod, ONLY: mdw, R2SO4, DENSO4, f_r_wet, surf_PM25_sulf, & |
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| 16 | & budg_emi_ocs, budg_emi_so2, budg_emi_h2so4, budg_emi_part |
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[2690] | 17 | |
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| 18 | USE dimphy |
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[4293] | 19 | USE infotrac_phy, ONLY : nbtr_bin, nbtr_sulgas, nbtr, id_SO2_strat |
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[2690] | 20 | USE aerophys |
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[3526] | 21 | USE geometry_mod, ONLY : cell_area, boundslat |
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[2690] | 22 | USE mod_grid_phy_lmdz |
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| 23 | USE mod_phys_lmdz_mpi_data, ONLY : is_mpi_root |
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| 24 | USE mod_phys_lmdz_para, only: gather, scatter |
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[4601] | 25 | USE phys_cal_mod, ONLY : year_len, year_cur, mth_cur, day_cur, hour |
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[2690] | 26 | USE sulfate_aer_mod |
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| 27 | USE phys_local_var_mod, ONLY: stratomask |
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| 28 | USE YOMCST |
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[3526] | 29 | USE print_control_mod, ONLY: lunout |
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[4601] | 30 | USE strataer_local_var_mod |
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| 31 | |
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[2690] | 32 | IMPLICIT NONE |
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| 33 | |
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| 34 | ! Input argument |
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| 35 | !--------------- |
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| 36 | REAL,INTENT(IN) :: pdtphys ! Pas d'integration pour la physique (seconde) |
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| 37 | REAL,INTENT(IN) :: gmtime ! Heure courante |
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| 38 | LOGICAL,INTENT(IN) :: debutphy ! le flag de l'initialisation de la physique |
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| 39 | INTEGER,INTENT(IN) :: julien ! Jour julien |
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| 40 | |
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| 41 | REAL,DIMENSION(klev),INTENT(IN) :: presnivs! pressions approximat. des milieux couches (en PA) |
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| 42 | REAL,DIMENSION(klon),INTENT(IN) :: xlat ! latitudes pour chaque point |
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| 43 | REAL,DIMENSION(klon),INTENT(IN) :: xlon ! longitudes pour chaque point |
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| 44 | REAL,DIMENSION(klon),INTENT(IN) :: pphis ! geopotentiel du sol |
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| 45 | REAL,DIMENSION(klon,klev),INTENT(IN) :: pphi ! geopotentiel de chaque couche |
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| 46 | |
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| 47 | REAL,DIMENSION(klon,klev),INTENT(IN) :: t_seri ! Temperature |
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| 48 | REAL,DIMENSION(klon,klev),INTENT(IN) :: pplay ! pression pour le mileu de chaque couche (en Pa) |
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| 49 | REAL,DIMENSION(klon,klev+1),INTENT(IN) :: paprs ! pression pour chaque inter-couche (en Pa) |
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| 50 | REAL,DIMENSION(klon,klev),INTENT(IN) :: sh ! humidite specifique |
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| 51 | REAL,DIMENSION(klon,klev),INTENT(IN) :: rh ! humidite relative |
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| 52 | |
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| 53 | ! Output argument |
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| 54 | !---------------- |
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| 55 | REAL,DIMENSION(klon,klev,nbtr),INTENT(INOUT) :: tr_seri ! Concentration Traceur [U/KgA] |
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| 56 | |
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| 57 | ! Local variables |
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| 58 | !---------------- |
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[3526] | 59 | REAL :: m_aer_emiss_vol_daily ! daily injection mass emission |
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[4601] | 60 | REAL :: m_aer ! aerosol mass |
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[3526] | 61 | INTEGER :: it, k, i, ilon, ilev, itime, i_int, ieru |
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[2690] | 62 | LOGICAL,DIMENSION(klon,klev) :: is_strato ! true = above tropopause, false = below |
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| 63 | REAL,DIMENSION(klon,klev) :: m_air_gridbox ! mass of air in every grid box [kg] |
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| 64 | REAL,DIMENSION(klon_glo,klev,nbtr) :: tr_seri_glo ! Concentration Traceur [U/KgA] |
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| 65 | REAL,DIMENSION(klev+1) :: altLMDz ! altitude of layer interfaces in m |
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| 66 | REAL,DIMENSION(klev) :: f_lay_emiss ! fraction of emission for every vertical layer |
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| 67 | REAL :: f_lay_sum ! sum of layer emission fractions |
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[2699] | 68 | REAL :: alt ! altitude for integral calculation |
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[2690] | 69 | INTEGER,PARAMETER :: n_int_alt=10 ! number of subintervals for integration over Gaussian emission profile |
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| 70 | REAL,DIMENSION(nbtr_bin) :: r_bin ! particle radius in size bin [m] |
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| 71 | REAL,DIMENSION(nbtr_bin) :: r_lower ! particle radius at lower bin boundary [m] |
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| 72 | REAL,DIMENSION(nbtr_bin) :: r_upper ! particle radius at upper bin boundary [m] |
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| 73 | REAL,DIMENSION(nbtr_bin) :: m_part_dry ! mass of one dry particle in size bin [kg] |
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| 74 | REAL :: zrho ! Density of air [kg/m3] |
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| 75 | REAL :: zdz ! thickness of atm. model layer in m |
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[2752] | 76 | REAL,DIMENSION(klev) :: zdm ! mass of atm. model layer in kg |
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[2690] | 77 | REAL,DIMENSION(klon,klev) :: dens_aer ! density of aerosol particles [kg/m3 aerosol] with default H2SO4 mass fraction |
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[2752] | 78 | REAL :: emission ! emission |
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[3526] | 79 | REAL :: theta_min, theta_max ! for SAI computation between two latitudes |
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| 80 | REAL :: dlat_loc |
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[4601] | 81 | REAL :: latmin,latmax,lonmin,lonmax ! lat/lon min/max for injection |
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| 82 | REAL :: sigma_alt, altemiss ! injection altitude + sigma for distrib |
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| 83 | REAL :: pdt,stretchlong ! physic timestep, stretch emission over one day |
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| 84 | |
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[4513] | 85 | INTEGER :: injdur_sai ! injection duration for SAI case [days] |
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| 86 | INTEGER :: yr, is_bissext |
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[2690] | 87 | |
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[4601] | 88 | IF (is_mpi_root .AND. flag_verbose_strataer) THEN |
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[3526] | 89 | WRITE(lunout,*) 'in traccoag: date from phys_cal_mod =',year_cur,'-',mth_cur,'-',day_cur,'-',hour |
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[4601] | 90 | WRITE(lunout,*) 'IN traccoag flag_emit: ',flag_emit |
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[2690] | 91 | ENDIF |
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[3526] | 92 | |
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[2690] | 93 | DO it=1, nbtr_bin |
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| 94 | r_bin(it)=mdw(it)/2. |
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| 95 | ENDDO |
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| 96 | |
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| 97 | !--set boundaries of size bins |
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| 98 | DO it=1, nbtr_bin |
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| 99 | IF (it.EQ.1) THEN |
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| 100 | r_upper(it)=sqrt(r_bin(it+1)*r_bin(it)) |
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| 101 | r_lower(it)=r_bin(it)**2./r_upper(it) |
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| 102 | ELSEIF (it.EQ.nbtr_bin) THEN |
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| 103 | r_lower(it)=sqrt(r_bin(it)*r_bin(it-1)) |
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| 104 | r_upper(it)=r_bin(it)**2./r_lower(it) |
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| 105 | ELSE |
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| 106 | r_lower(it)=sqrt(r_bin(it)*r_bin(it-1)) |
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| 107 | r_upper(it)=sqrt(r_bin(it+1)*r_bin(it)) |
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| 108 | ENDIF |
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| 109 | ENDDO |
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| 110 | |
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| 111 | IF (debutphy .and. is_mpi_root) THEN |
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| 112 | DO it=1, nbtr_bin |
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[3526] | 113 | WRITE(lunout,*) 'radius bin', it, ':', r_bin(it), '(from', r_lower(it), 'to', r_upper(it), ')' |
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[2690] | 114 | ENDDO |
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| 115 | ENDIF |
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| 116 | |
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| 117 | !--initialising logical is_strato from stratomask |
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| 118 | is_strato(:,:)=.FALSE. |
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[2695] | 119 | WHERE (stratomask.GT.0.5) is_strato=.TRUE. |
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[2690] | 120 | |
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| 121 | ! STRACOMP (H2O, P, t_seri -> aerosol composition (R2SO4)) |
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| 122 | ! H2SO4 mass fraction in aerosol (%) |
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| 123 | CALL stracomp(sh,t_seri,pplay) |
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| 124 | |
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| 125 | ! aerosol density (gr/cm3) |
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| 126 | CALL denh2sa(t_seri) |
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| 127 | |
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| 128 | ! compute factor for converting dry to wet radius (for every grid box) |
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| 129 | f_r_wet(:,:) = (dens_aer_dry/(DENSO4(:,:)*1000.)/(R2SO4(:,:)/100.))**(1./3.) |
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| 130 | |
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| 131 | !--calculate mass of air in every grid box |
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| 132 | DO ilon=1, klon |
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[4601] | 133 | DO ilev=1, klev |
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| 134 | m_air_gridbox(ilon,ilev)=(paprs(ilon,ilev)-paprs(ilon,ilev+1))/RG*cell_area(ilon) |
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| 135 | ENDDO |
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[2690] | 136 | ENDDO |
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[4601] | 137 | |
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[2752] | 138 | !--initialise emission diagnostics |
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[4601] | 139 | budg_emi(:,1)=0.0 |
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[2752] | 140 | budg_emi_ocs(:)=0.0 |
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| 141 | budg_emi_so2(:)=0.0 |
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| 142 | budg_emi_h2so4(:)=0.0 |
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| 143 | budg_emi_part(:)=0.0 |
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| 144 | |
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[4601] | 145 | !--sulfur emission, depending on chosen scenario (flag_emit) |
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| 146 | SELECT CASE(flag_emit) |
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[2690] | 147 | |
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| 148 | CASE(0) ! background aerosol |
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| 149 | ! do nothing (no emission) |
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| 150 | |
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| 151 | CASE(1) ! volcanic eruption |
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| 152 | !--only emit on day of eruption |
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| 153 | ! stretch emission over one day of Pinatubo eruption |
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[3526] | 154 | DO ieru=1, nErupt |
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| 155 | IF (year_cur==year_emit_vol(ieru).AND.mth_cur==mth_emit_vol(ieru).AND.& |
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| 156 | day_cur>=day_emit_vol(ieru).AND.day_cur<(day_emit_vol(ieru)+injdur)) THEN |
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[4601] | 157 | |
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| 158 | ! daily injection mass emission |
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| 159 | m_aer=m_aer_emiss_vol(ieru,1)/(REAL(injdur)*REAL(ponde_lonlat_vol(ieru))) |
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| 160 | !emission as SO2 gas (with m(SO2)=64/32*m_aer_emiss) |
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| 161 | m_aer=m_aer*(mSO2mol/mSatom) |
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| 162 | |
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| 163 | WRITE(lunout,*) 'IN traccoag m_aer_emiss_vol(ieru)=',m_aer_emiss_vol(ieru,1), & |
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[3526] | 164 | 'ponde_lonlat_vol(ieru)=',ponde_lonlat_vol(ieru),'(injdur*ponde_lonlat_vol(ieru))', & |
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[4601] | 165 | (injdur*ponde_lonlat_vol(ieru)),'m_aer_emiss_vol_daily=',m_aer,'ieru=',ieru |
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[3526] | 166 | WRITE(lunout,*) 'IN traccoag, dlon=',dlon |
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[4601] | 167 | |
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| 168 | latmin=xlat_min_vol(ieru) |
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| 169 | latmax=xlat_max_vol(ieru) |
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| 170 | lonmin=xlon_min_vol(ieru) |
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| 171 | lonmax=xlon_max_vol(ieru) |
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| 172 | altemiss = altemiss_vol(ieru) |
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| 173 | sigma_alt = sigma_alt_vol(ieru) |
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| 174 | pdt=pdtphys |
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| 175 | ! stretch emission over one day of eruption |
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| 176 | stretchlong = 1. |
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| 177 | |
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| 178 | CALL STRATEMIT(pdtphys,pdt,xlat,xlon,t_seri,pplay,paprs,tr_seri,& |
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| 179 | m_aer,latmin,latmax,lonmin,lonmax,altemiss,sigma_alt,id_SO2_strat, & |
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| 180 | stretchlong,1,0) |
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| 181 | |
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[3526] | 182 | ENDIF ! emission period |
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| 183 | ENDDO ! eruption number |
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| 184 | |
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[2690] | 185 | CASE(2) ! stratospheric aerosol injections (SAI) |
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| 186 | ! |
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[4513] | 187 | ! Computing duration of SAI in days... |
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| 188 | ! ... starting from 0... |
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| 189 | injdur_sai = 0 |
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| 190 | ! ... then adding whole years from first to (n-1)th... |
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| 191 | DO yr = year_emit_sai_start, year_emit_sai_end-1 |
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| 192 | ! (n % 4 == 0) and (n % 100 != 0 or n % 400 == 0) |
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| 193 | is_bissext = (MOD(yr,4)==0) .AND. (MOD(yr,100) /= 0 .OR. MOD(yr,400) == 0) |
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| 194 | injdur_sai = injdur_sai+365+is_bissext |
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| 195 | ENDDO |
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| 196 | ! ... then subtracting part of the first year where no injection yet... |
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| 197 | is_bissext = (MOD(year_emit_sai_start,4)==0) .AND. (MOD(year_emit_sai_start,100) /= 0 .OR. MOD(year_emit_sai_start,400) == 0) |
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| 198 | SELECT CASE(mth_emit_sai_start) |
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| 199 | CASE(2) |
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| 200 | injdur_sai = injdur_sai-31 |
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| 201 | CASE(3) |
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| 202 | injdur_sai = injdur_sai-31-28-is_bissext |
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| 203 | CASE(4) |
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| 204 | injdur_sai = injdur_sai-31-28-is_bissext-31 |
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| 205 | CASE(5) |
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| 206 | injdur_sai = injdur_sai-31-28-is_bissext-31-30 |
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| 207 | CASE(6) |
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| 208 | injdur_sai = injdur_sai-31-28-is_bissext-31-30-31 |
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| 209 | CASE(7) |
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| 210 | injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30 |
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| 211 | CASE(8) |
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| 212 | injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30-31 |
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| 213 | CASE(9) |
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| 214 | injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30-31-31 |
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| 215 | CASE(10) |
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| 216 | injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30-31-31-30 |
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| 217 | CASE(11) |
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| 218 | injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30-31-31-30-31 |
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| 219 | CASE(12) |
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| 220 | injdur_sai = injdur_sai-31-28-is_bissext-31-30-31-30-31-31-30-31-30 |
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| 221 | END SELECT |
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| 222 | injdur_sai = injdur_sai-day_emit_sai_start+1 |
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| 223 | ! ... then adding part of the n-th year |
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| 224 | is_bissext = (MOD(year_emit_sai_end,4)==0) .AND. (MOD(year_emit_sai_end,100) /= 0 .OR. MOD(year_emit_sai_end,400) == 0) |
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| 225 | SELECT CASE(mth_emit_sai_end) |
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| 226 | CASE(2) |
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| 227 | injdur_sai = injdur_sai+31 |
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| 228 | CASE(3) |
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| 229 | injdur_sai = injdur_sai+31+28+is_bissext |
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| 230 | CASE(4) |
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| 231 | injdur_sai = injdur_sai+31+28+is_bissext+31 |
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| 232 | CASE(5) |
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| 233 | injdur_sai = injdur_sai+31+28+is_bissext+31+30 |
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| 234 | CASE(6) |
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| 235 | injdur_sai = injdur_sai+31+28+is_bissext+31+30+31 |
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| 236 | CASE(7) |
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| 237 | injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30 |
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| 238 | CASE(8) |
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| 239 | injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30+31 |
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| 240 | CASE(9) |
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| 241 | injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30+31+31 |
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| 242 | CASE(10) |
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| 243 | injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30+31+31+30 |
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| 244 | CASE(11) |
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| 245 | injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30+31+31+30+31 |
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| 246 | CASE(12) |
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| 247 | injdur_sai = injdur_sai+31+28+is_bissext+31+30+31+30+31+31+30+31+30 |
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| 248 | END SELECT |
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| 249 | injdur_sai = injdur_sai+day_emit_sai_end |
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| 250 | ! A security: are SAI dates of injection consistent? |
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| 251 | IF (injdur_sai <= 0) THEN |
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| 252 | CALL abort_physic('traccoag_mod', 'Pb in SAI dates of injection.',1) |
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| 253 | ENDIF |
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| 254 | ! Injection in itself |
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| 255 | IF (( year_emit_sai_start <= year_cur ) & |
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| 256 | .AND. ( year_cur <= year_emit_sai_end ) & |
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| 257 | .AND. ( mth_emit_sai_start <= mth_cur .OR. year_emit_sai_start < year_cur ) & |
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| 258 | .AND. ( mth_cur <= mth_emit_sai_end .OR. year_cur < year_emit_sai_end ) & |
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| 259 | .AND. ( day_emit_sai_start <= day_cur .OR. mth_emit_sai_start < mth_cur .OR. year_emit_sai_start < year_cur ) & |
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| 260 | .AND. ( day_cur <= day_emit_sai_end .OR. mth_cur < mth_emit_sai_end .OR. year_cur < year_emit_sai_end )) THEN |
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[4601] | 261 | |
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| 262 | m_aer=m_aer_emiss_sai |
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| 263 | !emission as SO2 gas (with m(SO2)=64/32*m_aer_emiss) |
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| 264 | m_aer=m_aer*(mSO2mol/mSatom) |
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| 265 | |
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| 266 | latmin=xlat_sai |
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| 267 | latmax=xlat_sai |
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| 268 | lonmin=xlon_sai |
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| 269 | lonmax=xlon_sai |
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| 270 | altemiss = altemiss_sai |
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| 271 | sigma_alt = sigma_alt_sai |
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| 272 | pdt=0. |
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| 273 | ! stretch emission over whole year (360d) |
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| 274 | stretchlong=FLOAT(year_len) |
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| 275 | |
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| 276 | CALL STRATEMIT(pdtphys,pdt,xlat,xlon,t_seri,pplay,paprs,m_air_gridbox,tr_seri,& |
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| 277 | m_aer,latmin,latmax,lonmin,lonmax,altemiss,sigma_alt,id_SO2_strat, & |
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| 278 | stretchlong,1,0) |
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| 279 | |
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| 280 | budg_emi_so2(:) = budg_emi(:,1)*mSatom/mSO2mol |
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[4513] | 281 | ENDIF ! Condition over injection dates |
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| 282 | |
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[3526] | 283 | CASE(3) ! --- SAI injection over a single band of longitude and between |
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| 284 | ! lat_min and lat_max |
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| 285 | |
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[4601] | 286 | m_aer=m_aer_emiss_sai |
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| 287 | !emission as SO2 gas (with m(SO2)=64/32*m_aer_emiss) |
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| 288 | m_aer=m_aer*(mSO2mol/mSatom) |
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[3526] | 289 | |
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[4601] | 290 | latmin=xlat_min_sai |
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| 291 | latmax=xlat_max_sai |
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| 292 | lonmin=xlon_sai |
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| 293 | lonmax=xlon_sai |
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| 294 | altemiss = altemiss_sai |
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| 295 | sigma_alt = sigma_alt_sai |
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| 296 | pdt=0. |
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| 297 | ! stretch emission over whole year (360d) |
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| 298 | stretchlong=FLOAT(year_len) |
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[3526] | 299 | |
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[4601] | 300 | CALL STRATEMIT(pdtphys,pdt,xlat,xlon,t_seri,pplay,paprs,m_air_gridbox,tr_seri,& |
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| 301 | m_aer,latmin,latmax,lonmin,lonmax,altemiss,sigma_alt,id_SO2_strat, & |
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| 302 | stretchlong,1,0) |
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[3526] | 303 | |
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[4601] | 304 | budg_emi_so2(:) = budg_emi(:,1)*mSatom/mSO2mol |
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| 305 | |
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| 306 | END SELECT ! emission scenario (flag_emit) |
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[3526] | 307 | |
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[2690] | 308 | !--read background concentrations of OCS and SO2 and lifetimes from input file |
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[2695] | 309 | !--update the variables defined in phys_local_var_mod |
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| 310 | CALL interp_sulf_input(debutphy,pdtphys,paprs,tr_seri) |
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[2690] | 311 | |
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| 312 | !--convert OCS to SO2 in the stratosphere |
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[2752] | 313 | CALL ocs_to_so2(pdtphys,tr_seri,t_seri,pplay,paprs,is_strato) |
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[2690] | 314 | |
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| 315 | !--convert SO2 to H2SO4 |
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[2752] | 316 | CALL so2_to_h2so4(pdtphys,tr_seri,t_seri,pplay,paprs,is_strato) |
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[2690] | 317 | |
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| 318 | !--common routine for nucleation and condensation/evaporation with adaptive timestep |
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| 319 | CALL micphy_tstep(pdtphys,tr_seri,t_seri,pplay,paprs,rh,is_strato) |
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| 320 | |
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| 321 | !--call coagulation routine |
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| 322 | CALL coagulate(pdtphys,mdw,tr_seri,t_seri,pplay,dens_aer,is_strato) |
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| 323 | |
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[4601] | 324 | !--call sedimentation routine |
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[2690] | 325 | CALL aer_sedimnt(pdtphys, t_seri, pplay, paprs, tr_seri, dens_aer) |
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| 326 | |
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| 327 | !--compute mass concentration of PM2.5 sulfate particles (wet diameter and mass) at the surface for health studies |
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| 328 | surf_PM25_sulf(:)=0.0 |
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| 329 | DO i=1,klon |
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| 330 | DO it=1, nbtr_bin |
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| 331 | IF (mdw(it) .LT. 2.5e-6) THEN |
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| 332 | !surf_PM25_sulf(i)=surf_PM25_sulf(i)+tr_seri(i,1,it+nbtr_sulgas)*m_part(i,1,it) & |
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[3526] | 333 | !assume that particles consist of ammonium sulfate at the surface (132g/mol) |
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| 334 | !and are dry at T = 20 deg. C and 50 perc. humidity |
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[2690] | 335 | surf_PM25_sulf(i)=surf_PM25_sulf(i)+tr_seri(i,1,it+nbtr_sulgas) & |
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| 336 | & *132./98.*dens_aer_dry*4./3.*RPI*(mdw(it)/2.)**3 & |
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[2752] | 337 | & *pplay(i,1)/t_seri(i,1)/RD*1.e9 |
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[2690] | 338 | ENDIF |
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| 339 | ENDDO |
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| 340 | ENDDO |
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[4601] | 341 | |
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[2690] | 342 | END SUBROUTINE traccoag |
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| 343 | |
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| 344 | END MODULE traccoag_mod |
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