& o3,qstr,co2,cfc11,cfc12,cfc22,n2o,methane,
& qstr(1,1,1,bi,bj),o3(1,1,1,bi,bj),
_RL qstr(im2,jm2,Nrphin,nSxIn,nSyIn)
common /chem_exports/ o3, qstr
_RL qstr(sNx,sNy,Nrphys,Nsx,Nsy)
. im2,jm2,Nrphys,nSx,nSy,bi,bj,o3,qstr)
_RL qstr(im2,jm2,Nrphin,nSxin,nSyin)