Read more

GEIA 20th Conference

2023 June 21-23 Hosted by Royal Belgian Institute for Space Aeronomy Belgium

Read more

GEIA 21st Conference

2025 July 9-11 Hosted by University Félix Houphouët Boigny, Abidjan, Cote d’Ivoire

GEIA 2019
Read more

GEIA 2019 - 2020 Web Conference - View the Webinar

Thanks to our virtual conference partner University of Chile --- No Registration Fee

Read more

COVID-19 Workshop

Visit COVID-19 Working Group for Details

Read more

Africa Emissions Working Group

Africa Emissions Workshop 2022 January 14

Overview, Working Groups, Events


Overview - About GEIA

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 an  IGAC 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 iniative's virtual communications center.

GEIA’s ongoing initiatives advance understanding, distribution and use of timely information to the research, assessment and policy communities.  GEIA also provides information on emissions on regional and megacity scales, assesses land-water-air exchange processes, and develops platforms for information sharing and data evaluation.  The NASA-sponsored GEIA Web Site works with the international GEIA Scientific Steering Committee to coordinate GEIA planning efforts, develop and implement outreach strategies, and make effective distribution of datasets and related information possible .This GEIA 2023 Poster and GEIA 2024 Presentation describe GEIA and highlights several activities. GEIA operations are guided by the GEIA Mandate.

GEIA 2023 conference is reported in the October 2023  IGAC Newsletter.

Working Groups

GEIA's efforts in emissions analysis are advanced by working groups on specific topics, overarching activities, and through collaborations with other initiatives, science teams, and agencies.

Current working groups include: Near Real Time Emissions,  China Emissions, Africa, Latin America/Carribbean Emissions, VOC Emissions, Urban Emission

Additional working groups will be formed as GEIA-facilitated dialogs identify evolving emissions challenges and establish paths for translating these challenges into new emissions databases.




GEIA 2025 Conference - Save the Date

2025 July 9-11 Hosted by University Felix Houphouet Boigny, Abidjan, Cote d'Ivoire  


GEIA 2023 Conference Results

GEIA 20th Conference  2023 June 21-23.  Hosted by Royal Belgian Institute for Space Aeronomy Belgium


GEIA 2019-2020 Conference Results

View the Conference Video Recording  Here  https://youtu.be/dCa7PrMaO8k

The Conference Summary was recently published in the IGAC Newsletter.

For details and presentations from participants, visit Conferences 2019-2020  


Results from Recent GEIA Sessions