source: LMDZ5/trunk/libf/phylmd/StratAer/so2_to_h2so4.F90 @ 2694

Last change on this file since 2694 was 2690, checked in by oboucher, 8 years ago

Adding a module for stratospheric aerosols with a bin scheme.
The module gets activated with -strataer true compiling option.
May not quite work yet, more testing needed, but should not affect
the rest of LMDz as everything is under a CPP_StratAer key.
File size: 2.0 KB
Line 
1SUBROUTINE SO2_TO_H2SO4(pdtphys,tr_seri,t_seri,pplay,paprs,sh,SO2_lifetime,is_strato,sulf_convert_sub)
2
3  USE dimphy, ONLY : klon,klev
4  USE aerophys
5  USE infotrac
6  USE YOMCST, ONLY : RG
7
8  IMPLICIT NONE
9
10  !--------------------------------------------------------
11
12  ! transfer variables when calling this routine
13  REAL,INTENT(IN)                               :: pdtphys ! Pas d'integration pour la physique (seconde)
14  REAL,DIMENSION(klon,klev,nbtr),INTENT(INOUT)  :: tr_seri ! Concentration Traceur [U/KgA]
15  REAL,DIMENSION(klon,klev),INTENT(IN)          :: t_seri  ! Temperature
16  REAL,DIMENSION(klon,klev),INTENT(IN)          :: pplay   ! pression pour le mileu de chaque couche (en Pa)
17  REAL,DIMENSION(klon,klev+1),INTENT(IN)        :: paprs   ! pression pour chaque inter-couche (en Pa)
18  REAL,DIMENSION(klon,klev),INTENT(IN)          :: sh      ! humidite specifique   
19  REAL,DIMENSION(klon,klev),INTENT(IN)          :: SO2_lifetime
20  LOGICAL,DIMENSION(klon,klev),INTENT(IN)  :: is_strato
21
22  ! local variables in coagulation routine
23  INTEGER                                       :: i,j,k,nb,ilon,ilev
24  REAL,DIMENSION(klon,klev)                     :: sulf_convert_sub ! SO2 converted to H2SO4 [kg(S)/m2/layer/s]
25
26!--convert SO2 to H2SO4
27  DO ilon=1, klon
28  DO ilev=1, klev
29  !only in the stratosphere
30  IF (is_strato(ilon,ilev)) THEN
31    IF (SO2_lifetime(ilon,ilev).GT.0.0) THEN
32      sulf_convert_sub(ilon,ilev)=tr_seri(ilon,ilev,id_SO2_strat)*(1-exp(-pdtphys/SO2_lifetime(ilon,ilev)))
33    ELSE
34      sulf_convert_sub(ilon,ilev)=0.0
35    ENDIF
36    tr_seri(ilon,ilev,id_SO2_strat)=tr_seri(ilon,ilev,id_SO2_strat) - sulf_convert_sub(ilon,ilev)
37    tr_seri(ilon,ilev,id_H2SO4_strat)=tr_seri(ilon,ilev,id_H2SO4_strat) + mH2SO4mol/mSO2mol*sulf_convert_sub(ilon,ilev)
38    !convert sulf_convert from kg(SO2)/kgA to kg(S)/m2/layer/s for saving as diagnostic
39    sulf_convert_sub(ilon,ilev)=sulf_convert_sub(ilon,ilev)*mSatom/mSO2mol*(paprs(ilon,ilev)-paprs(ilon,ilev+1))/RG/pdtphys
40  ENDIF
41  ENDDO
42  ENDDO
43
44END SUBROUTINE SO2_TO_H2SO4
Note: See TracBrowser for help on using the repository browser.