source: LMDZ6/trunk/libf/phylmd/StratAer/ocs_to_so2.f90 @ 5924

Last change on this file since 5924 was 5924, checked in by lebasn, 10 hours ago

StratAer?: remove old params and rename others for coherence (flag_nucl and flag_strat_compo). Use integer instead of boolean to choose compo and nucleation methods.
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File size: 2.4 KB
Line 
1!
2! $Id: ocs_to_so2.f90 5924 2025-12-09 14:08:05Z lebasn $
3!
4SUBROUTINE ocs_to_so2(pdtphys,tr_seri,t_seri,pplay,paprs,is_strato)
5
6  USE dimphy, ONLY : klon,klev
7  USE aerophys
8  USE infotrac_phy
9  USE yomcst_mod_h, ONLY : RG
10  USE phys_local_var_mod, ONLY : OCS_lifetime, budg_3D_ocs_to_so2, budg_ocs_to_so2
11 
12  IMPLICIT NONE
13
14  !--------------------------------------------------------
15  ! transfer variables when calling this routine
16  REAL,INTENT(IN)                               :: pdtphys ! Pas d'integration pour la physique (seconde)
17  REAL,DIMENSION(klon,klev,nbtr),INTENT(INOUT)  :: tr_seri ! Concentration Traceur [U/KgA]
18  REAL,DIMENSION(klon,klev),INTENT(IN)          :: t_seri  ! Temperature
19  REAL,DIMENSION(klon,klev),INTENT(IN)          :: pplay   ! pression pour le mileu de chaque couche (en Pa)
20  REAL,DIMENSION(klon,klev+1),INTENT(IN)        :: paprs   ! pression pour chaque inter-couche (en Pa)
21  LOGICAL,DIMENSION(klon,klev),INTENT(IN)       :: is_strato
22
23  ! local variables
24  INTEGER                                       :: i,j,k,nb,ilon,ilev
25  REAL                                          :: rreduce
26 
27!--convert OCS to SO2
28  budg_3D_ocs_to_so2(:,:)=0.0
29  budg_ocs_to_so2(:)=0.0
30
31  DO ilon=1, klon
32     DO ilev=1, klev
33        !only in the stratosphere
34        IF (is_strato(ilon,ilev)) THEN
35          IF (OCS_lifetime(ilon,ilev).GT.0.0.AND.OCS_lifetime(ilon,ilev).LT.1.E10) THEN
36            rreduce = OCS_lifetime(ilon,ilev)
37            ! Check lifetime rreduce < timestep*3 (such as H2SO4 loss > 0.28*H2SO4) with exp(-1/3)=0.72
38            IF (rreduce .LT. (3.*pdtphys)) rreduce = 3.*pdtphys
39            budg_3D_ocs_to_so2(ilon,ilev)=tr_seri(ilon,ilev,id_OCS_strat)*(1.0-exp(-pdtphys/rreduce))
40            tr_seri(ilon,ilev,id_OCS_strat)=tr_seri(ilon,ilev,id_OCS_strat) - budg_3D_ocs_to_so2(ilon,ilev)
41            tr_seri(ilon,ilev,id_SO2_strat)=tr_seri(ilon,ilev,id_SO2_strat) + mSO2mol/mOCSmol*budg_3D_ocs_to_so2(ilon,ilev)
42            !convert budget from kg(OCS)/kgA to kg(S)/m2/layer/s for saving as diagnostic
43            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
44            budg_ocs_to_so2(ilon)=budg_ocs_to_so2(ilon)+budg_3D_ocs_to_so2(ilon,ilev)
45         ENDIF
46         ! END IF(OCS_lifetime(ilon,ilev).GT.0.0.AND.OCS_lifetime(ilon,ilev).LT.1.E10)
47      ENDIF
48      ! END IF(is_strato(ilon,ilev))
49   ENDDO
50  ENDDO
51
52END SUBROUTINE ocs_to_so2
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