In order to prepare policies and plans to reduce GHG emissions, national policy-makers need information on the costs and benefits of different mitigation options in addition to their carbon implications. Policy-makers must weigh the costs, benefits, and impacts of climate change mitigation and adaptation options, in the face of competition for limited resources.

• Developed international energy use data and emissions scenarios for the EPA report to Congress on Policy Options for Stabilizing Global Climate, 1989
• Organized and led studies of 12 developing countries on mitigation costs and emissions scenarios, 1991 and 1994 Special Issues of Energy Policy
• Technical lead for climate change mitigation analysis for the US Country Studies Program,
• 1993-9, GEF/UNEP Country Studies
• 1992-98, and GEF/UNDP/ADB Asia Studies (ALGAS),
• 1995-99.
  

• Established the tropical forestry research network for mitigation and inventory analysis in 1990. Includes experts from Brazil, Mexico, India, China, Thailand, Philippines, Indonesia, Nigeria and Tanzania.
• Developed forest inventory and carbon emissions COPATH methodology and data. Published in a special issue of Climatic Change -- 1996
• Developed forest mitigation analysis COMAP model and data.
  

The GCOMAP project reported on the global potential for carbon sequestration in forest plantations, and the reduction of carbon emissions from deforestation, in response to six carbon price scenarios from 2000 to 2100. These carbon price scenarios cover a range typically seen in global integrated assessment models. The world forest sector was disaggregated into ten regions, four largely temperate, developed regions: the European Union, Oceania, Russia, and the United States; and six developing, mostly tropical, regions: Africa, Central America, China, India, Rest of Asia, and South America.