Global Emissions Inventory Activity

The Global Emissions Inventory Activity (GEIA) was created in 1990 to develop and distribute global emissions inventories of gases and aerosols emitted into the atmosphere from natural and anthropogenic (human-caused) sources. The long-term goal has been to develop inventories of all trace species that are involved in global atmospheric chemistry. GEIA is a multi-national effort that draws on the expertise of researchers worldwide to assemble a distributed collection of emission inventories. In 2002, GEIA also began providing short reviews of current understanding of emissions for all of the major chemicals and source types. GEIA provides emission inventories and/or reviews for the following species:- Ammonia- Black Carbon and Organic Carbon - Carbon Dioxide - Carbon Monoxide- CFC-11- CFC-12- HCFC-22- MCF (Methylchloroform)- Dimethylsulfide- Heavy Metals- Mercury- Nitrous Oxide- Methane (Natural)- Methane (Anthropogenic)- Organochlorides- Primary Particles- Radionuclides- Reactive Chloine Emissions- Sulfur and Nitrogen Oxides- Volatile Organic Compounds (Natural)- Volatile Organic Compounds (Anthropogenic)