The Radiative Forcing Model Intercomparison Project (RFMIP) will assess sources of error and spread in the radiative forcing calculated by state-of-the-art climate models for historical and future climate studies. RFMIP consists of three linked components: one assessing the forcing by greenhouse gases, one the forcing by aerosols, and one linking these with estimates of effective forcing inferred from global model integrations via careful diagnosis.

See also our page at ESGF.

Temperature and adjusted radiative forcing time series, from Forster et al. (2013).

Globally-averaged surface temperature change since pre-industrial (a, b) and estimated net radiative forcing (c, d) over the historical period (a, c) and RCP projections from CMIP5 (b, d). Thin lines represent individual model results and thick lines are the multi-model means. RFMIP seeks to understand the degree to which diversity in effective radiative forcing, rather than diversity in climate sensitivity, drives the distribution of temperature changes over time. Credit: Forster, P. M., T. Andrews, P. Good, J. M. Gregory, L. S. Jackson, and M. Zelinka (2013), Evaluating adjusted forcing and model spread for historical and future scenarios in the CMIP5 generation of climate models, J. Geophys. Res. Atmos., 118, 1139–1150, doi:10.1002/jgrd.50174. © 2013. American Geophysical Union, all rights reserved. Used with permission.

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University of Colorado, Boulder
University of Leeds
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National Institute for Environmental Studies, Japan
Program for Climate Model Diagnosis and Intercomparison (PCMDI)
Institut Pierre Simon Laplace
Met Office
World Climate Research Programme
US Department of Energy