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CMIP Phase 6 (CMIP6)

Overview CMIP6 Design and Organization

The CMIP6 design and organization was finalized at the WGCM 18th Session that was held 8-10 October 2014 in Grainau/Garmisch-Partenkirchen (Germany).

A brief summary can be found in the following overview presentation (CMIP6FinalDesign_WGCMMeeting_150116_Sent.pdf) and below. The final CMIP6 Design, possibly with small modifications to the here presented figures and wording, will be published in a GMD Special Issue together with a description of the CMIP6-Endorsed MIPs and the forcing datasets. This Special Issue will open  30 April 2015.
 
The DECK which will serve as an entry card for CMIP will consist of the following four simulations: (a) AMIP simulation (~1979-2014); (b) Pre-industrial control simulation; (c) 1%/yr CO2 increase, and (d) Abrupt 4xCO2 run. In addition, the CMIP6 Historical Simulation has been added which will serve as the entry card for CMIP6 and as a benchmark for CMIP6-Endorsed MIPs. The historical simulation (1850-2014) will use the specific forcings consistent with CMIP6 which will be finalized on the timescales laid out in slide 10. The CMIP6 Historical Simulation has been introduced in addition to the DECK to better separate CMIP from a specific Phase of CMIP (see slide 4 for illustration and slide 5 for the main criteria for DECK and Historical Phase X). Both DECK and the CMIP6 Historical Simulation should be run for each model configuration used in the subsequent CMIP6-Endorsed MIPs. Future climate change scenarios will be run as part of ScenarioMIP with a Tier 1 that includes three different scenarios, spanning different possible futures.
 
The criteria for MIP endorsement have been streamlined and agreed at the WGCM 18th session. They now comprise a single set covering MIPs and their experiments. A timeline towards MIP endorsement and beyond has been agreed. Input to the data request will be coordinated by the WGCM Infrastructure Panel.

 

References:

 

CMIP6 Special Issue

A CMIP6 Special Issue will be published in GMD (see here). This special issue describes the new design and organization of CMIP and the suite of experiments of its next phase (i.e., CMIP6) in a series of invited contributions. The description of the experiments and forcing data sets define CMIP6 in detail. The papers provide the required information to produce a consistent set of climate model simulations that can be scientifically exploited to address the three broad scientific questions of CMIP6: (1) How does the Earth system respond to forcing?, (2) What are the origins and consequences of systematic model biases?, and (3) How can we assess future climate changes given climate variability, predictability and uncertainties in scenarios? The special issue will include an overview paper on the CMIP6 design and organization, contributions from CMIP6-endorsed MIPs and descriptions of the forcing data sets. It will open 30 April 2015.

 

CMIP6 Data Request

The CMIP6 Data Request is coordinated by the WGCM Infrastructure Panel

 
CMIP6 Forcing Data Set

An initial description of the CMIP6 forcing datasets is now available and open for review comments and feedback. Should you have any comments and feedback on the forcings, please email the contact person and copy to CMIP Panel chair, Veronika Eyring ( This email address is being protected from spambots. You need JavaScript enabled to view it. ). Please send your comments no later than 15 April 2015.

  • Historical SLCF and GHG Emissions – Contacts: Steve Smith ( This email address is being protected from spambots. You need JavaScript enabled to view it. ) and Bob Andres ( This email address is being protected from spambots. You need JavaScript enabled to view it. )
    • Initial Description: Date 19 February 2015 (for the initial description, click here)
  • Global Gridded Land-use Forcing Datasets – Contact: George Hurtt ( This email address is being protected from spambots. You need JavaScript enabled to view it. )
    • Initial Description: Date 31 January 2015 (for the initial description, click here
  • Historical GHG concentrations – Contact: Malte Meinshausen ( This email address is being protected from spambots. You need JavaScript enabled to view it. ) and Alexander Nauels ( This email address is being protected from spambots. You need JavaScript enabled to view it. )
    • Initial Description: Date 17 February2015 (for the initial description, click here)
  • Ozone and Stratospheric Water Vapor Concentrations – Contact: Michaela Hegglin ( This email address is being protected from spambots. You need JavaScript enabled to view it. )
    • Initial Description: Date 19 February 2015 (for the initial description, click here)
  • Aerosol Concentrations – Contacts: Gunnar Myhre ( This email address is being protected from spambots. You need JavaScript enabled to view it. ), Michael Schulz ( This email address is being protected from spambots. You need JavaScript enabled to view it. ), Bjorn Stevens ( This email address is being protected from spambots. You need JavaScript enabled to view it. )
    • Initial Description: Date 11 February 2015 (for the initial description, click here)
  • Solar forcing – Contacts: Katja Matthes ( This email address is being protected from spambots. You need JavaScript enabled to view it. ) and Bernd Funke ( This email address is being protected from spambots. You need JavaScript enabled to view it. )
    • Initial Description: Date 13 February 2015 (for the initial description, click here)
  • Stratospheric Aerosol Data Set – Contact: Larry Thomason ( This email address is being protected from spambots. You need JavaScript enabled to view it. )
    • Initial Description: Date 31 January 2015 (for the initial description, click here)
  • Future Emissions – Contact: Detlef van Vuuren ( This email address is being protected from spambots. You need JavaScript enabled to view it. ) and Brian O’Neill ( This email address is being protected from spambots. You need JavaScript enabled to view it. )
    • Initial Description: coming soon
  • AMIP Sea Surface Temperature and Sea Ice Datasets – Contact: PCMDI ( This email address is being protected from spambots. You need JavaScript enabled to view it. )
    • Initial Description and data available: Date 22 June 2015 (for the initial description, click here)
Applications for CMIP6 Endorsed MIPs

See http://www.wcrp-climate.org/modelling-wgcm-mip-catalogue/modelling-wgcm-cmip6-endorsed-mips

 

CMIP5 survey
  • CMIP5 Survey - sent out to representatives of the climate community end of June 2013
  • Synthesis of CMIP5 Survey (August 2013) (Presentation by Veronika Eyring and Ron Stouffer at the Workshop ‘Next Generation Climate Change Experiments Needed to Advance Knowledge and for Assessment of CMIP6’, 5 August 2013, Aspen, CO, USA)
  • Synthesis of CMIP5 Survey (October 2013) (Presentation by Veronika Eyring and Ron Stouffer at the WGCM 17th Session, 1-3 October 2013, Victoria, Canada)
 
Old versions of slides

CMIP6FinalDesign_WGCMMeeting_141110_Sent.pdf