3MIP — Mobility and Migration Modeling Intercomparison Project

Participate in 3MIP

3MIP is open to research teams applying any model architecture to climate-migration questions, and to researchers with domain expertise on Bangladesh or climate-related mobility. The first benchmark case is coastal Bangladesh; registered modelers commit to working with the curated input dataset and contributing outputs to the iEMSs 2026 synthesis and the Climatic Change topical collection.

Who should participate

Modelers

Active research teams developing migration models. Solo PhD students, postdocs with their own implementation, established modeling labs — all welcome. Participation requires working with a model that produces some form of mobility output for spatial units in Bangladesh.

Experts

Researchers with relevant expertise on Bangladesh and/or climate-related mobility who are not running a model. Experts join the network's regular meetings and provide domain consultation to the modeling teams.

  • Agent-based models
  • Gravity models
  • Radiation models
  • Integrated assessment models with migration modules
  • Machine learning approaches (statistical, deep learning, hybrid)
  • Other architectures producing comparable outputs

What participation involves

  1. Receive access to the curated input dataset and participation guidelines after registering.
  2. Take part in the network's regular participant meetings, with times rotated across time zones so the inconvenience of out-of-hours meetings is shared. Recordings are available if you can't attend live.
  3. Run your model on the curated Bangladesh dataset, applying your own research question and architecture, at your own pace. The first major milestone is the iEMSs 2026 Dublin synthesis session, July 12–16, 2026.
  4. Submit your outputs and methodological documentation for inclusion in the synthesis and the Climatic Change topical collection; submission timing is announced to registered participants. Participating modelers are asked to share their code and model findings with the network.
  5. Retain ownership of your model and outputs. 3MIP synthesizes findings across teams; individual model outputs and code remain their authors' work and may be published independently.

Register

I'd like to participate as (required)
Modeling approach (required — select all that apply)

Required for the expert track. Describe your expertise on Bangladesh and/or climate-related mobility.

Used for communication and dataset access.

Optional. Format: 0000-0000-0000-0000

2–4 sentences on what you intend to study or contribute.

Colleagues or team members who should be included — names and emails. Optional.

Your information is used only for 3MIP coordination. We do not share it with third parties. See the privacy notice for details.

Frequently asked questions

Does it cost anything to participate?
No. Participation is free.
I'm not a modeler — can I still participate?
Yes. Researchers with relevant expertise on Bangladesh and/or climate-related mobility can register as experts. The network holds regular meetings — scheduled to alternate time zones so no region always takes the inconvenient slot — and experts contribute domain consultation to the modeling teams.
What if my model is still in development?
You can register and join the participant meetings now. Output submission for the synthesis requires a working model; submission timing is announced to registered participants.
Who owns the outputs?
You own your model and outputs. 3MIP synthesizes across teams; you remain the author of your own work.
Do I have to share my code?
Yes. In participating, modelers are asked to share their code and model findings with the network.
Can I join after July 2026?
Yes. The Bangladesh case continues after the iEMSs synthesis. Future cases will have their own registration windows.
What if I want to use additional data sources?
The curated data list may be expanded, but any new dataset must be made known and available to all teams. Contact project coordination to request the inclusion of an additional dataset.
How are decisions made about protocol changes?
The three co-leads decide, in consultation with the advisory committee. Major protocol revisions are announced to registered participants before they take effect.
What is the Climatic Change topical collection?
A planned topical collection in the journal Climatic Change for 3MIP-affiliated papers. The formal call for papers is forthcoming.
Will participating modelers be listed publicly?
Only with your explicit consent. A public directory is planned for a future version of the site.
Who do I contact if I have questions?
Email Mario Keputa at mk2674@cornell.edu, or use the Contact page.