Quantification of chemical emissions into the air is a key step in explaining observed variability and trends in atmospheric composition and in attributing these observed changes to their causes on local to global scales. Accurate emissions data are necessary to identify feasible controls that reduce adverse impacts associated with air quality and climate, to track the success of implemented policies, and to estimate future impacts.
The Global Emissions InitiAtive (GEIA), a community effort dedicated to emissions information exchange and competence building, was created in 1990 under the International Geosphere-Biosphere Programme (IGBP) and is now a joint IGAC / iLEAPS / AIMES activity. GEIA maintains an extensive network of emissions experts covering most source types and world regions, builds emissions data access and analysis platforms, and communicates with the emissions community through online resources and in-person meetings. The GEIA web site is the initiative's virtual communications center.
Building on over two decades of success, the GEIA Scientific Steering Committee envisions that by 2020 GEIA will become the expert forum that unites emissions research, assessment, operations, regulation, and policy in three broad domains: 1) strengthening new understanding and analysis of emissions processes; 2) improving access to emissions information; and 3) enhancing connections among the emissions community.
Please view this short slide presentation on GEIA. This 2015 presentation describes GEIA and highlights several activities.