Update of /u/gcmpack/MITgcm/pkg/generic_advdiff In directory forge:/tmp/cvs-serv3133 Modified Files: gad_implicit_r.F gad_advection.F gad_calc_rhs.F Log Message: rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F) to work with implicit vertical advection and AB.