| 1 | ! |
|---|
| 2 | ! $Id: ocs_to_so2.f90 5268 2024-10-23 17:02:39Z fhourdin $ |
|---|
| 3 | ! |
|---|
| 4 | SUBROUTINE 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 | USE strataer_local_var_mod, ONLY : flag_min_rreduce |
|---|
| 12 | |
|---|
| 13 | IMPLICIT NONE |
|---|
| 14 | |
|---|
| 15 | !-------------------------------------------------------- |
|---|
| 16 | ! transfer variables when calling this routine |
|---|
| 17 | REAL,INTENT(IN) :: pdtphys ! Pas d'integration pour la physique (seconde) |
|---|
| 18 | REAL,DIMENSION(klon,klev,nbtr),INTENT(INOUT) :: tr_seri ! Concentration Traceur [U/KgA] |
|---|
| 19 | REAL,DIMENSION(klon,klev),INTENT(IN) :: t_seri ! Temperature |
|---|
| 20 | REAL,DIMENSION(klon,klev),INTENT(IN) :: pplay ! pression pour le mileu de chaque couche (en Pa) |
|---|
| 21 | REAL,DIMENSION(klon,klev+1),INTENT(IN) :: paprs ! pression pour chaque inter-couche (en Pa) |
|---|
| 22 | LOGICAL,DIMENSION(klon,klev),INTENT(IN) :: is_strato |
|---|
| 23 | |
|---|
| 24 | ! local variables |
|---|
| 25 | INTEGER :: i,j,k,nb,ilon,ilev |
|---|
| 26 | REAL :: rreduce |
|---|
| 27 | |
|---|
| 28 | !--convert OCS to SO2 |
|---|
| 29 | budg_3D_ocs_to_so2(:,:)=0.0 |
|---|
| 30 | budg_ocs_to_so2(:)=0.0 |
|---|
| 31 | |
|---|
| 32 | DO ilon=1, klon |
|---|
| 33 | DO ilev=1, klev |
|---|
| 34 | !only in the stratosphere |
|---|
| 35 | IF (is_strato(ilon,ilev)) THEN |
|---|
| 36 | IF (OCS_lifetime(ilon,ilev).GT.0.0.AND.OCS_lifetime(ilon,ilev).LT.1.E10) THEN |
|---|
| 37 | rreduce = OCS_lifetime(ilon,ilev) |
|---|
| 38 | ! Check lifetime rreduce < timestep*3 (such as H2SO4 loss > 0.28*H2SO4) with exp(-1/3)=0.72 |
|---|
| 39 | IF(flag_min_rreduce) THEN |
|---|
| 40 | IF (rreduce .LT. (3.*pdtphys)) rreduce = 3.*pdtphys |
|---|
| 41 | ENDIF |
|---|
| 42 | budg_3D_ocs_to_so2(ilon,ilev)=tr_seri(ilon,ilev,id_OCS_strat)*(1.0-exp(-pdtphys/rreduce)) |
|---|
| 43 | tr_seri(ilon,ilev,id_OCS_strat)=tr_seri(ilon,ilev,id_OCS_strat) - budg_3D_ocs_to_so2(ilon,ilev) |
|---|
| 44 | tr_seri(ilon,ilev,id_SO2_strat)=tr_seri(ilon,ilev,id_SO2_strat) + mSO2mol/mOCSmol*budg_3D_ocs_to_so2(ilon,ilev) |
|---|
| 45 | !convert budget from kg(OCS)/kgA to kg(S)/m2/layer/s for saving as diagnostic |
|---|
| 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 |
|---|
| 47 | budg_ocs_to_so2(ilon)=budg_ocs_to_so2(ilon)+budg_3D_ocs_to_so2(ilon,ilev) |
|---|
| 48 | ENDIF |
|---|
| 49 | ! END IF(OCS_lifetime(ilon,ilev).GT.0.0.AND.OCS_lifetime(ilon,ilev).LT.1.E10) |
|---|
| 50 | ENDIF |
|---|
| 51 | ! END IF(is_strato(ilon,ilev)) |
|---|
| 52 | ENDDO |
|---|
| 53 | ENDDO |
|---|
| 54 | |
|---|
| 55 | END SUBROUTINE ocs_to_so2 |
|---|
