ABSTRACT
A. OVERVIEW This chapter deals with trace gases other than CO2 from fossil fuel burning. We investigate what technical and policy measures could be employed to realize the concentration targets ofthe toleration scenario; how difficult it might be to realize these scenario targets; and what trade-offs, if any, could be made among greenhouse gases for which reductions are easier and those for which they are more difficult and uncertain. We include in this chapter fossil carbon dioxide emissions from cement production, and carbon monoxide and methane relea..- es from fossil energy production and use.
