The Global Emissions Inventory Activity (GEIA), a core program activity of the International Global Atmospheric Chemistry (IGAC) Project of the International Geosphere-Biosphere Program, develops data and other related information on key chemical emissions to the atmosphere and communicates through its virtual center at www.geiacenter.org. GEIA inventories are developed by international teams and are quality assured through peer review publications. GEIA inventories are traditionally provided on a one degree latitude by one degree longitude grid, as annual and/or seasonal averages, and are aggregated over emission category sectors for individual chemical inventories. As researchers and decision makers world wide become more concerned about the relationship of global climate change and regional air quality, additional flexibility in tools, more highly resolved spatial scales of inventory development, and enhanced coordination among inventory developers will be needed. To address these growing needs, GEIA plans to distribute other important and quality assured emission information through its web site. New information will include underlying data sets from which the emission data were derived (e.g., activity data), global and regional emission inventory data at finer spatial resolutions and/or more refined temporal resolutions and expanded time periods, algorithms for modeling processes selected natural emissions, references to promising new approaches to emission estimates, such as satellite imagery and inverse modeling, and brief summaries of the state of knowledge regarding emissions of individual chemicals and source categories.