SUBROUTINE aeropt(pplay, paprs, t_seri, msulfate, RHcl, . tau_ae, piz_ae, cg_ae, ai ) c IMPLICIT none c c c #include "dimensions.h" #include "dimphy.h" #include "YOMCST.h" c c Arguments: c REAL paprs(klon,klev+1) REAL pplay(klon,klev), t_seri(klon,klev) REAL msulfate(klon,klev) ! masse sulfate ug SO4/m3 [ug/m^3] REAL RHcl(klon,klev) ! humidite relative ciel clair REAL tau_ae(klon,klev,2) ! epaisseur optique aerosol REAL piz_ae(klon,klev,2) ! single scattering albedo aerosol REAL cg_ae(klon,klev,2) ! asymmetry parameter aerosol REAL ai(klon) ! POLDER aerosol index c c Local c INTEGER i, k, inu INTEGER RH_num, nbre_RH PARAMETER (nbre_RH=12) REAL RH_tab(nbre_RH) REAL RH_MAX, DELTA, rh PARAMETER (RH_MAX=95.) DATA RH_tab/0.,10.,20.,30.,40.,50.,60.,70.,80.,85.,90.,95./ REAL zrho, zdz REAL taue670(klon) ! epaisseur optique aerosol absorption 550 nm REAL taue865(klon) ! epaisseur optique aerosol extinction 865 nm REAL alpha_aer_sulfate(nbre_RH,5) !--unit m2/g SO4 REAL alphasulfate c c Proprietes optiques c REAL alpha_aer(nbre_RH,2) !--unit m2/g SO4 REAL cg_aer(nbre_RH,2) DATA alpha_aer/.500130E+01, .500130E+01, .500130E+01, . .500130E+01, .500130E+01, .616710E+01, . .826850E+01, .107687E+02, .136976E+02, . .162972E+02, .211690E+02, .354833E+02, . .139460E+01, .139460E+01, .139460E+01, . .139460E+01, .139460E+01, .173910E+01, . .244380E+01, .332320E+01, .440120E+01, . .539570E+01, .734580E+01, .136038E+02 / DATA cg_aer/.619800E+00, .619800E+00, .619800E+00, . .619800E+00, .619800E+00, .662700E+00, . .682100E+00, .698500E+00, .712500E+00, . .721800E+00, .734600E+00, .755800E+00, . .545600E+00, .545600E+00, .545600E+00, . .545600E+00, .545600E+00, .583700E+00, . .607100E+00, .627700E+00, .645800E+00, . .658400E+00, .676500E+00, .708500E+00 / DATA alpha_aer_sulfate/ . 4.910,4.910,4.910,4.910,6.547,7.373, . 8.373,9.788,12.167,14.256,17.924,28.433, . 1.453,1.453,1.453,1.453,2.003,2.321, . 2.711,3.282,4.287,5.210,6.914,12.305, . 4.308,4.308,4.308,4.308,5.753,6.521, . 7.449,8.772,11.014,12.999,16.518,26.772, . 3.265,3.265,3.265,3.265,4.388,5.016, . 5.775,6.868,8.745,10.429,13.457,22.538, . 2.116,2.116,2.116,2.116,2.882,3.330, . 3.876,4.670,6.059,7.327,9.650,16.883/ c DO i=1, klon taue670(i)=0.0 taue865(i)=0.0 ENDDO c DO k=1, klev DO i=1, klon if (t_seri(i,k).eq.0) write (*,*) 'aeropt T ',i,k,t_seri(i,k) if (pplay(i,k).eq.0) write (*,*) 'aeropt p ',i,k,pplay(i,k) zrho=pplay(i,k)/t_seri(i,k)/RD ! kg/m3 zdz=(paprs(i,k)-paprs(i,k+1))/zrho/RG ! m rh=MIN(RHcl(i,k)*100.,RH_MAX) RH_num = INT( rh/10. + 1.) IF (rh.LT.0.) STOP 'aeropt: RH < 0 not possible' IF (rh.gt.85.) RH_num=10 IF (rh.gt.90.) RH_num=11 DELTA=(rh-RH_tab(RH_num))/(RH_tab(RH_num+1)-RH_tab(RH_num)) c inu=1 tau_ae(i,k,inu)=alpha_aer(RH_num,inu) + . DELTA*(alpha_aer(RH_num+1,inu)-alpha_aer(RH_num,inu)) tau_ae(i,k,inu)=tau_ae(i,k,inu)*msulfate(i,k)*zdz*1.e-6 piz_ae(i,k,inu)=1.0 cg_ae(i,k,inu)=cg_aer(RH_num,inu) + . DELTA*(cg_aer(RH_num+1,inu)-cg_aer(RH_num,inu)) c inu=2 tau_ae(i,k,inu)=alpha_aer(RH_num,inu) + . DELTA*(alpha_aer(RH_num+1,inu)-alpha_aer(RH_num,inu)) tau_ae(i,k,inu)=tau_ae(i,k,inu)*msulfate(i,k)*zdz*1.e-6 piz_ae(i,k,inu)=1.0 cg_ae(i,k,inu)=cg_aer(RH_num,inu) + . DELTA*(cg_aer(RH_num+1,inu)-cg_aer(RH_num,inu)) cjq cjq for aerosol index c alphasulfate=alpha_aer_sulfate(RH_num,4) + . DELTA*(alpha_aer_sulfate(RH_num+1,4)- . alpha_aer_sulfate(RH_num,4)) !--m2/g c taue670(i)=taue670(i)+ . alphasulfate*msulfate(i,k)*zdz*1.e-6 c alphasulfate=alpha_aer_sulfate(RH_num,5) + . DELTA*(alpha_aer_sulfate(RH_num+1,5)- . alpha_aer_sulfate(RH_num,5)) !--m2/g c taue865(i)=taue865(i)+ . alphasulfate*msulfate(i,k)*zdz*1.e-6 ENDDO ENDDO c DO i=1, klon ai(i)=(-log(MAX(taue670(i),0.0001)/ . MAX(taue865(i),0.0001))/log(670./865.)) * . taue865(i) ENDDO c RETURN END