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COSMIC2 is a tool which provides researchers and policy analysts a way to generate country-specific climate change scenarios. As most researchers do not have access to the computing power required to run GCM models, COSMIC2 provides access to national-level climate and sea level estimates for a range of emissions scenarios, allowing for use of consistent and proven GCM runs.

Toolbox tags

This toolbox entry has been labelled with the following tags:

Sector: climate
Spatial scale: national
Temporal focus: future
Onset: slow
Role in decision process: diagnostic
Level of skills required: limited
Data requirements: limited
Adaptation tasks: Potential impact projection; Detection and attribution


COSMIC2 provides national-level climate change projections for 158 countries; this data can be used as inputs to any further impact or adaptation analysis.


As stated above, COSMI2 outputs national level estimates for 158 countries; outputs include monthly estimates of average temperature and precipitation, as well as annual mean temperature, sea levels, and CO2 concentration. The tool only requires user inputs in terms of selecting a GCM and emissions scenario. COSMIC2 is free to use, and is provided on request by EPRI.

Send request to Larry J. Williams (

Further Reading and References

Schlesinger, M.E. and S. Malyshev, 'Changes in near-surface temperatures and sea level for the Post-SRES CO2-stabiliztion scenarios', Integrated assessment, 2: 95-110.

Schlesinger, M.E., S. Malyshev, E.V. Rozanov, F. Yang, N.G. Andronova, B. de Vries, A.Grübler, K. Jiang, T. Masui, T. Morita, J. Penner, W. Pepper, A. Sankovski and Y. Zhang, '2000: Geographical distributions of temperature change for scenarios of greenhouse gas and sulfur dioxide emissions.', Tech. Forecast. Soc. Change, 65, 167-193.

Williams, Larry J., Shaw, Daigee, Mendelsohn, Robert: 1998,'Evaluating GCM Output with Impact Models', Climatic Change, 39: 111-133.

Yohe, Gary and Schlesinger, Michael E.: 1998,'Sea-Level Change: The Expected Economic Cost of Protection or Abandonment in the United States', Climatic Change, 38: 337-472.

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Characterising future climate