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Geospace Environment Modeling (GEM) NSF Logo color.jpg

Geospace Environment Modeling (GEM) is a broad-based, community-initiated research program on the physics of the Earth's magnetosphere and the coupling of the magnetosphere to the atmosphere and to the solar wind. The purpose of the GEM program is to support basic research into the dynamical and structural properties of geospace, leading to the construction of a global Geospace General Circulation Model (GGCM) with predictive capability. This GGCM model will be modularized and will complement parallel developments of magnetohydrodynamic models. The strategy for achieving GEM goals is to undertake a series of focus groups and challenge campaigns, in both theory and observational modes, each focusing on particular aspects of the geospace environment.

The Geospace Environment Modeling (GEM) program is sponsored by National Science Foundation (NSF) Division of Atmospheric and Geospace Sciences.

New to GEM? Get the Newsletter and Follow the Chair’s Chat Blog!

Want to stay informed about GEM activities? Sign up for announcements through the GEM Messenger - more information here and follow the GEM Chair Blog.

What's New

  • This year, GEM will have a hybrid Mini-GEM workshop from 12 noon to 7 pm CDT (New Orleans time zone) the Sunday (December 12th) before the start of the AGU conference. The format of the meeting will be hybrid for the FGs that will have representatives in New Orleans and are willing to run the in-person component, and will be virtual for the FGs that elect to run their sessions remotely only. Detailed information is available at the GEM workshop website and on Slack.
  • The GEM Steering Committee is inviting your participation in the Virtual GEM session on Friday December 10, from 11:00 AM Eastern Time, to allow proposers to present their new Focus Group proposals and answer questions from the Steering Committee and the community. Please find more info and the Zoom login details in the GEM Messenger (v. 31, #48).
  • The GEM community has published the annual GEMstone Newsletter for 2021. Inside you can read reports detailing GEM activities over the past year as well as submissions from our liaison representatives highlighting latest news from US agencies and international partners.

GEM Community Knowledge Base

The science component of the GEM Workshops are led by a volunteer Steering Committee. To promote transparency and provide an informal guide to existing, new, and future members of the Steering Committee, a document of GEM Steering Committee Best Practices was developed. This document, updated in October 2019, is available here.

The hallmark of GEM workshops is its community-led workshop-style sessions, carried out through focus groups. Interested in applying to run a focus group and are not sure how to do it? Are you currently running a focus group and need ideas for how to achieve the workshop-style in your focus groups? Advice from previous focus group leaders on proposing and running a focus group, updated in October 2019, is available here.

Anti-Harassment Policy for GEM Meetings and Activities

GEM is committed to ensuring that all participants in all GEM activities have an environment that is free from harassment. This policy applies to all attendees at GEM activities including scientists, students, guests, staff, and contractors participating in scientific sessions, auxiliary meetings, and social events associated with any GEM gathering or other activity. See the GEM Anti-Harassment Policy, NSF Sexual Harassment for Conferences, and NSF Conference Workshop Symposium Participant Notice for details.

Commitment to Diversity, Equity and Inclusion in the GEM Community

GEM stands with the numerous professional and academic societies around the world that have pledged to support diversity, equity and inclusion, and commits to listen, advocate, and break down barriers for persons of color. We acknowledge that deep biases and inequities exist that prevent the full participation of people of color in our own scientific community. The GEM Steering Committee and leadership commit to being intentionally and actively anti-racist through education and best practices. Please see the GEM Inclusion Statement for further details.

Acknowledgment and Disclaimer

Any opinions, findings and conclusions or recommendations expressed at this website are those of the authors and do not necessarily reflect the views of the National Science Foundation (NSF). Comments about this website can be e-mailed to geospace.environment.modeling [at]