Following is the timeline planned for the Scenario Model Intercomparison Project (ScenarioMIP):

Summer 2015: ScenarioMIP endorsed by Coupled Model Intercomparison Project (CMIP) panel

April 2016: Paper on ScenarioMIP design submitted to the CMIP6 Special Issue (this paper was published in September 2016)

April 2016 - Spring 2018: Specification of future emissions and land use scenarios from IAMs, harmonization with historical emissions/land use, specification of future atmospheric concentrations

Spring 2018: Expected delivery of scenario emissions, land use, and concentrations

Mid-March 2018: Expected delivery data for future emssion data and long-lived greenhouse gas concentrations on input4MIPs (future land-use forcing data are already available at input4MIPs)

Mid to late May 2018: Expected delivery of future ozone database

Late May 2018: Release of anthropogenic aerosol optical properties and an associated Twomey effect for all future scenarios used in ScenarioMIP

Fall 2018 (update): As of November  2018 Tier 1 experiment forcing data are available at input4MIPs (; land-use data for Tier 2 SSP1-1.9 (1.5C scenario) and SSP5-3.4OS (overshoot) has also been completed and is going to be soon available (as of December 5th) at input4MIPs; ozone concentration and nitrogen deposition fields are missing for Tier 2 experiments, a remedy is being currently worked out. 

2018-2020: Co-author a paper with all participating modeling groups on outcomes of ScenarioMIP simulations.

ScenarioMIP Co-Chairs

Brian O'Neill (NCAR, USA), email: 

Claudia Tebaldi (NCAR, USA), email:

Detlef van Vuuren (PBL, The Netherlands), email:

ScenarioMIP SSC Members

Veronika Eyring (DLR, Germany)
Pierre Friedlingstein (U of Exeter, UK)
George Hurtt (U of Maryland, USA)
Reto Knutti (ETH, Switzerland)
Jean-Francois Lamarque (NCAR, USA)
Jason Lowe (MetOffice, UK)
Jerry Meehl (NCAR, USA)
Richard Moss (JGCRI, USA)
Ben Sanderson (NCAR, USA)

ScenarioMIP is a CMIP-endorsed Model Intercomparison Project

The Coupled Model Intercomparison Project (CMIP) provides a protocol for studying the output of coupled atmosphere-ocean general circulations models. Established by the WCRP Working Group on Coupled Modelling, CMIP provides a community-based infrastructure in support of climate model diagnosis, validation, intercomparison, documentation, and data access.