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| 2 | ! $Id: ocs_to_so2.F90 5101 2024-07-23 06:22:55Z fairhead $ |
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| 3 | |
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| 4 | SUBROUTINE ocs_to_so2(pdtphys,tr_seri,t_seri,pplay,paprs,is_strato) |
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| 5 | |
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| 6 | USE dimphy, ONLY: klon,klev |
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| 7 | USE aerophys |
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| 8 | USE infotrac_phy |
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| 9 | USE lmdz_yomcst, ONLY: RG |
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| 10 | USE phys_local_var_mod, ONLY: OCS_lifetime, budg_3D_ocs_to_so2, budg_ocs_to_so2 |
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| 11 | USE strataer_local_var_mod, ONLY: flag_min_rreduce |
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| 12 | |
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| 13 | IMPLICIT NONE |
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| 14 | |
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| 15 | !-------------------------------------------------------- |
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| 16 | ! transfer variables when calling this routine |
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| 17 | REAL,INTENT(IN) :: pdtphys ! Pas d'integration pour la physique (seconde) |
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| 18 | REAL,DIMENSION(klon,klev,nbtr),INTENT(INOUT) :: tr_seri ! Concentration Traceur [U/KgA] |
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| 19 | REAL,DIMENSION(klon,klev),INTENT(IN) :: t_seri ! Temperature |
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| 20 | REAL,DIMENSION(klon,klev),INTENT(IN) :: pplay ! pression pour le mileu de chaque couche (en Pa) |
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| 21 | REAL,DIMENSION(klon,klev+1),INTENT(IN) :: paprs ! pression pour chaque inter-couche (en Pa) |
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| 22 | LOGICAL,DIMENSION(klon,klev),INTENT(IN) :: is_strato |
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| 23 | |
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| 24 | ! local variables |
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| 25 | INTEGER :: i,j,k,nb,ilon,ilev |
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| 26 | REAL :: rreduce |
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| 27 | |
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| 28 | !--convert OCS to SO2 |
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| 29 | budg_3D_ocs_to_so2(:,:)=0.0 |
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| 30 | budg_ocs_to_so2(:)=0.0 |
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| 31 | |
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| 32 | DO ilon=1, klon |
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| 33 | DO ilev=1, klev |
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| 34 | !only in the stratosphere |
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| 35 | IF (is_strato(ilon,ilev)) THEN |
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| 36 | IF (OCS_lifetime(ilon,ilev)>0.0.AND.OCS_lifetime(ilon,ilev)<1.E10) THEN |
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| 37 | rreduce = OCS_lifetime(ilon,ilev) |
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| 38 | ! Check lifetime rreduce < timestep*3 (such as H2SO4 loss > 0.28*H2SO4) with exp(-1/3)=0.72 |
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| 39 | IF(flag_min_rreduce) THEN |
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| 40 | IF (rreduce < (3.*pdtphys)) rreduce = 3.*pdtphys |
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| 41 | ENDIF |
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| 42 | budg_3D_ocs_to_so2(ilon,ilev)=tr_seri(ilon,ilev,id_OCS_strat)*(1.0-exp(-pdtphys/rreduce)) |
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| 43 | tr_seri(ilon,ilev,id_OCS_strat)=tr_seri(ilon,ilev,id_OCS_strat) - budg_3D_ocs_to_so2(ilon,ilev) |
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| 44 | tr_seri(ilon,ilev,id_SO2_strat)=tr_seri(ilon,ilev,id_SO2_strat) + mSO2mol/mOCSmol*budg_3D_ocs_to_so2(ilon,ilev) |
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| 45 | !convert budget from kg(OCS)/kgA to kg(S)/m2/layer/s for saving as diagnostic |
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| 46 | budg_3D_ocs_to_so2(ilon,ilev)=budg_3D_ocs_to_so2(ilon,ilev)*mSatom/mOCSmol*(paprs(ilon,ilev)-paprs(ilon,ilev+1))/RG/pdtphys |
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| 47 | budg_ocs_to_so2(ilon)=budg_ocs_to_so2(ilon)+budg_3D_ocs_to_so2(ilon,ilev) |
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| 48 | ENDIF |
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| 49 | ! END IF(OCS_lifetime(ilon,ilev).GT.0.0.AND.OCS_lifetime(ilon,ilev).LT.1.E10) |
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| 50 | ENDIF |
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| 51 | ! END IF(is_strato(ilon,ilev)) |
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| 52 | ENDDO |
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| 53 | ENDDO |
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| 54 | |
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| 55 | END SUBROUTINE ocs_to_so2 |
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