Models & groups
The following groups and teams, in alphabetical order, have contributed data to at least one iTEM intercomparison.
Some elementary methodology illustrates the diversity of iTEM participants:
- Any model is built for an explicit purpose, which guides model design.
- Models developed by groups over time also embed the evolving knowledge of group members.
- Some groups operate a single model, whereas others operate multiple models representing aspects or parts of the broader transport–energy system.
- Models differ in their coverage:
- Integrated assessment models (IAMs) represent the entire economy, including non-transportation sectors. These models often represent the effect of greenhouse gas (GHG) emissions (from transportation and other sectors) on the climate.
- Transport-focused models may include a stylized representation of the non-transportation sectors, or none at all.
- Some transport-focused models are embedded in larger modeling frameworks, so include a soft link to (a) complementary economy-wide model(s).
- Models differ in their resolution—the degree of disaggregation along multiple conceptual and physical dimensions.
A core activity of iTEM is to understand how these differences give rise to differing projections of measures that describe the same real-world system.
BP Energy Outlook
- Lead: Robert Spicer.
- Model website.
- Participant since iTEM 2.
Emissions Prediction & Policy Analysis (EPPA)
- Group: MIT Joint Program on the Science & Policy of Global Change.
- Leads: Sergey Paltsev, Paul Natsuo Kishimoto.
- Model website.
- Participant since iTEM 2.
ExxonMobil Outlook for Energy
- Lead: Todd Onderdonk.
- Model website.
- Participant since iTEM 2.
Global Change Assessment Model (GCAM)
- Group: Joint Global Change Research Institute — Pacific Northwest National Laboratory, U.S. Department of Energy & University of Maryland.
- Lead: G. Page Kyle.
- Model website.
- Participant since iTEM 1.
Global Energy System model (GET)
- Group: Department of Energy & Environment, Chalmers University.
- Leads: Maria Grahn
- Model documentation.
- Participant since iTEM 2.
Global Transportation Roadmap
- Group: International Council on Clean Transportation (ICCT).
- Lead: Joshua Miller.
- Model website.
- Participant since iTEM 1.
International Transport Forum
- Group: ITF, Organization for Economic Co-operation and Development (OECD).
- Leads: Jari Kauppila, Wei-Shiuen Ng.
- Multiple models.
- Participant since iTEM 1.
International Transportation Energy Demand Determinants (ITEDD)
- Group: Energy Information Administration, U.S. Department of Energy.
- Leads: John Maples, David Daniels.
- Part of the World Energy Projection System (WEPS+) framework.
- Model documentation.
- Participant since iTEM 1.
MESSAGE
- Group: Energy Program, International Institute for Applied Systems Analysis (IIASA).
- Lead: David McCollum.
- Model website.
- Participant since iTEM 1.
Mobility Model (MoMo)
- Group: International Energy Agency (IEA).
- Lead: Pierpaolo Cazzola.
- Model website.
- Participant since iTEM 1.
Shell Scenarios
- Lead: Martin Haigh.
- Model website.
- Participant since iTEM 2.
Statoil Energy Perspectives
- Lead: Tor Kartevold.
- Model website.
- Participant since iTEM 2.
Other participating organizations and individuals
Also in alphabetical order.
- Institute for Transportation Studies, University of California, Davis (ITS-Davis).
- Davis, CA, USA.
- Representative: Lew Fulton.
- IHS Automotive.
- London, United Kingdom.
- Representatives: Nigel Griffith, Tiffany Groode.
- King Abdullah Petroleum Studies and Research Center (KAPSARC).
- Riyadh, Saudi Arabia.
- Representative: Nicholas Chase.
- The Partnership on Sustainable, Low Carbon Transport (SLoCaT).
- Representatives: Cornie Huizenga, Sudhir Gota.
- Paul Leiby — Oak Ridge National Laboratory (ORNL), U.S. Department of Energy.
- Andreas Schäfer — University College London (UCL).
- Stanislav Sobolevsky — New York University (NYU).
- Sonia Yeh — Chalmers University of Technology.
Organizing group
A small sub-group has organized the past iTEM workshops, developed the database and comparison workflow, and maintains this website.
- Sonia Yeh
- Lew Fulton
- David McCollum
- G. Page Kyle
- Paul Natsuo Kishimoto
Contact us at mail@transportenergy.org. Additional contributors are welcome.