module moldiffcoeff_mod implicit none contains subroutine moldiffcoeff(dij) use tracer_mod, only: igcm_co2, igcm_co, igcm_o, igcm_o1d, & igcm_o2, igcm_o3, igcm_h, igcm_h2, igcm_oh, & igcm_ho2, igcm_h2o2, igcm_n2, igcm_ar, & igcm_h2o_vap, mmol IMPLICIT NONE c======================================================================= c subject: c -------- c Computing molecular diffusion coefficients c following Nair 94 (pg 131) c author: MAC 2002 c ------ c c======================================================================= #include "callkeys.h" c----------------------------------------------------------------------- c Input/Output c ------------ integer,parameter :: ncompmoldiff = 14 real dij(ncompmoldiff,ncompmoldiff) c Local variables: c --------------- INTEGER nq, n, nn, i,iq cccccccccccccccccccccccccccccccccccccccccccccccccccccccc c tracer numbering in the molecular diffusion cccccccccccccccccccccccccccccccccccccccccccccccccccccccc c Atomic oxygen must always be the LAST species of the list as c it is the dominant species at high altitudes.  integer,parameter :: i_co = 1 integer,parameter :: i_n2 = 2 integer,parameter :: i_o2 = 3 integer,parameter :: i_co2 = 4 integer,parameter :: i_h2 = 5 integer,parameter :: i_h = 6 integer,parameter :: i_oh = 7 integer,parameter :: i_ho2 = 8 integer,parameter :: i_h2o = 9 integer,parameter :: i_h2o2 = 10 integer,parameter :: i_o1d = 11 integer,parameter :: i_o3 = 12 integer,parameter :: i_ar = 13 integer,parameter :: i_o = 14 ! Tracer indexes in the GCM: integer,save :: g_co2=0 integer,save :: g_co=0 integer,save :: g_o=0 integer,save :: g_o1d=0 integer,save :: g_o2=0 integer,save :: g_o3=0 integer,save :: g_h=0 integer,save :: g_h2=0 integer,save :: g_oh=0 integer,save :: g_ho2=0 integer,save :: g_h2o2=0 integer,save :: g_n2=0 integer,save :: g_ar=0 integer,save :: g_h2o=0 !$OMP THREADPRIVATE(g_co2,g_co,g_o,g_o1d,g_o2,g_o3,g_h,g_h2,g_oh) !$OMP THREADPRIVATE(g_ho2,g_h2o2,g_n2,g_ar,g_h2o) integer,save :: gcmind(ncompmoldiff) real dnh logical,save :: firstcall=.true. !$OMP THREADPRIVATE(gcmind,firstcall) ! Initializations at first call (and some sanity checks) if (firstcall) then ! identify the indexes of the tracers we'll need g_co2=igcm_co2 if (g_co2.eq.0) then write(*,*) "moldiffcoeff: Error; no CO2 tracer !!!" stop endif g_co=igcm_co if (g_co.eq.0) then write(*,*) "moldiffcoeff: Error; no CO tracer !!!" stop endif g_o=igcm_o if (g_o.eq.0) then write(*,*) "moldiffcoeff: Error; no O tracer !!!" stop endif g_o1d=igcm_o1d if (g_o1d.eq.0) then write(*,*) "moldiffcoeff: Error; no O1D tracer !!!" stop endif g_o2=igcm_o2 if (g_o2.eq.0) then write(*,*) "moldiffcoeff: Error; no O2 tracer !!!" stop endif g_o3=igcm_o3 if (g_o3.eq.0) then write(*,*) "moldiffcoeff: Error; no O3 tracer !!!" stop endif g_h=igcm_h if (g_h.eq.0) then write(*,*) "moldiffcoeff: Error; no H tracer !!!" stop endif g_h2=igcm_h2 if (g_h2.eq.0) then write(*,*) "moldiffcoeff: Error; no H2 tracer !!!" stop endif g_oh=igcm_oh if (g_oh.eq.0) then write(*,*) "moldiffcoeff: Error; no OH tracer !!!" stop endif g_ho2=igcm_ho2 if (g_ho2.eq.0) then write(*,*) "moldiffcoeff: Error; no HO2 tracer !!!" stop endif g_h2o2=igcm_h2o2 if (g_h2o2.eq.0) then write(*,*) "moldiffcoeff: Error; no H2O2 tracer !!!" stop endif g_n2=igcm_n2 if (g_n2.eq.0) then write(*,*) "moldiffcoeff: Error; no N2 tracer !!!" stop endif g_ar=igcm_ar if (g_ar.eq.0) then write(*,*) "moldiffcoeff: Error; no AR tracer !!!" stop endif g_h2o=igcm_h2o_vap if (g_h2o.eq.0) then write(*,*) "moldiffcoeff: Error; no water vapor tracer !!!" stop endif c cccccccccccccccccccccccccccccccccccccccccccccccccccccccc c fill array to relate local indexes to gcm indexes cccccccccccccccccccccccccccccccccccccccccccccccccccccccc gcmind(i_co) = g_co gcmind(i_n2) = g_n2 gcmind(i_o2) = g_o2 gcmind(i_co2) = g_co2 gcmind(i_h2) = g_h2 gcmind(i_h) = g_h gcmind(i_oh) = g_oh gcmind(i_ho2) = g_ho2 gcmind(i_h2o) = g_h2o gcmind(i_h2o2)= g_h2o2 gcmind(i_o1d) = g_o1d gcmind(i_o3) = g_o3 gcmind(i_o) = g_o gcmind(i_ar) = g_ar c cccccccccccccccccccccccccccccccccccccccccccccccccccccccc firstcall= .false. endif ! of if (firstcall) dij(i_h2,i_co) = 0.0000651 dij(i_h2,i_n2) = 0.0000674 dij(i_h2,i_o2) = 0.0000697 dij(i_h2,i_co2) = 0.0000550 dij(i_h2,i_h2) = 0.0 dij(i_h2,i_h) = 0.0 dij(i_h2,i_oh) = 0.0 !0003 dij(i_h2,i_ho2) = 0.0 !0003 dij(i_h2,i_h2o) = 0.0 !0003 dij(i_h2,i_h2o2) = 0.0 !0003 dij(i_h2,i_o1d) = 0.0 dij(i_h2,i_o3) = 0.0 !0003 dij(i_h2,i_o) = 0.0 dij(i_h2,i_ar) = 0.0 c dij(i_h,i_o) = 0.0000144 dij(i_h,i_o) = 0.000114 print*,'moldiffcoef: COEFF CALC' open(56,file='coeffs.dat',status='unknown') do n=1,ncompmoldiff if (dij(i_h2,n).gt.0.0) then do nn=n,ncompmoldiff dij(nn,n)=dij(i_h2,n) & *sqrt(mmol(g_h2)/mmol(gcmind(nn))) if(n.eq.nn) dij(nn,n)=1.0 dij(n,nn)=dij(nn,n) enddo endif if (dij(i_h2,n).eq.0.0) then dnh=dij(i_h,i_o)*sqrt(mmol(g_o)/mmol(gcmind(n))) do nn=n,ncompmoldiff dij(nn,n)=dnh*sqrt(mmol(g_h)/mmol(gcmind(nn))) if(n.eq.nn) dij(nn,n)=1.0 dij(n,nn)=dij(nn,n) enddo endif enddo do n=1,ncompmoldiff do nn=n,ncompmoldiff write(56,*) n,nn,dij(n,nn) !*1.e5/1.381e-23/(273**1.75) enddo enddo close(56) end subroutine moldiffcoeff end module moldiffcoeff_mod