CFMIP Committee


CFMIP Publications

CFMIP Mailing Lists

CFMIP Meetings

CFMIP Strategy and Plans

WCRP Grand Challenge on Clouds, Circulation and Climate Sensitivity

CFMIP Data Availability

CFMIP/CMIP6 information

CMIP5 information

CFMIP observational simulator package (COSP)

ISCCP simulator

CFMIP observational datasets (at IPSL)

CFMIP/GCSS Intercomparison of LES and SCMs (CGILS)

CFMIP diagnostic codes


COOKIE Project

Registration for CFMIP Meeting on Cloud Processes, Circulation and Climate Sensitivity. Tokyo, Japan, September 25-28th, 2017

Registration is now open for the 2017 CFMIP meeting in September in Tokyo. Please see the meeting website for details.

Mark Webb, January, 2017

CFMIP/WCRP/ITCP Conference on Cloud Processes, Circulation and Climate Sensitivity. ICTP, Trieste, Italy, July 4-7th 2016.

The 2016 CFMIP meeting was held from 4th-7th July at the International Centre for Theoretical Physics in Trieste, Italy. The agenda is available here.

Updated by Mark Webb, 25th July, 2016

CFMIP Meeting on Cloud Processes and Climate Feedbacks
Asilomar Conference Grounds, Monterey, California, USA, June 8-11 2015.

The 2015 CFMIP meeting was held from Monday 8th to Thursday 11th June, 2015 at the Asilomar Conference Grounds in Monterey, California, USA.

The meeting agenda is available here (Updated 4th June). The presentations from the meeting are now available here.

We are grateful to Steve Klein and Lawrence Livermore National Laboratory for hosting us.

Updated by Mark Webb, 23rd June, 2015

CFMIP/EUCLIPSE Meeting on Cloud Processes and Climate Feedbacks
Egmond aan Zee, The Netherlands, July 8-11 2014.

The 2014 CFMIP meeting was held jointly with the EUCLIPSE project, and was hosted by KNMI at Hotel Zuiderduin in Egmond aan Zee in the Netherlands.

The agenda and presentations are available on the EUCLIPSE website for further information and updates.

Mark Webb, Updated July 2014

Trending Now: Water 7th International Scientific Conference on the Global Energy and Water Cycle The Hague, The Netherlands, 14-17 July 2014

Abstract Deadline: 14 February 2014

The increasing demand for fresh water and the impacts of climate change on water availability and extreme events highlight why water is a current major global concern and is "Trending Now." The Conference will celebrate 25 years of GEWEX research and set the stage for the next phase of research addressing the World Climate Research Programme Grand Challenges on water resources, extremes, and climate sensitivity through observations and data sets, their analyses, process studies, model development and exploitation, applications, technology transfer to operational results, and research capacity development and training for the next generation of scientists.

The Conference will include lead speakers in plenary sessions to provide synthesis and perspective, and an extensive set of parallel sessions to support detailed development of specialist themes. Papers are welcome for all parallel sessions, to be given either as oral presentations or posters.

Abstracts are invited for all topics, including: (1) the climate system; (2) land; and (3) atmosphere. For topic details, see the conference programme.

Please consider submitting an abstract to one of the following CFMIP/EUCLIPSE-related sessions:

20. Cloud to rainfall transitions - Linking multi-parameter observations to processes and models. Chris Kummerow, Bjorn Stevens, Jay Mace, Hugh Morrison, Ben Shipway

21. The coupling of clouds, precipitation, and radiation to the large-scale circulation Sandrine Bony, Chris Bretherton

22. Improving the representation of precipitation, cloud, and radiation processes in atmospheric models Jon Petch, Robert Pincus, Steve Woolnough

23. Improving the understanding and modeling of the land-atmosphere interface. Paul Dirmeyer, Bert Holtslag, Adrian Lock, Joe Santanello

*Abstract Submission and Registration*

The abstract deadline is 14 February 2014. Links to abstract submission and conference registration are available here.

CFMIP/EUCLIPSE Meeting on Cloud Processes and Climate Feedbacks
Hamburg, Germany, 10-14th June, 2013

The presentations from this meeting are now available via the EUCLIPSE website.

(Updated, July 2013)

Joint EUCLIPSE-CFMIP meeting, Paris, France, May 29th - June 1st, 2012

The 3rd EUCLIPSE General Assembly and joint EUCLIPSE-CFMIP meeting was held in Paris, from May 29th to June 1st. Please see the EUCLIPSE web site for more details.

Mark Webb, March 2012.

CFMIP/GCSS/EUCLIPSE Meeting on Cloud Processes and Climate Feedbacks, The Met Office, Exeter, United Kingdom, 6th-10th June, 2011.

A joint meeting between CFMIP, GCSS and EUCLIPSE was held in Exeter during the week of 6th-10th June, 2011. The theme of the meeting was understanding, evaluating and improving the representation of cloud processes and cloud feedbacks in global models. There was a particular emphasis on presentation and discussion of results and/or analysis plans related to CFMIP, EUCLIPSE and GCSS Boundary Layer Cloud cases (the CGILS cloud feedback case and the ASTEX and composite stratocumulus to cumulus transition cases).

The meeting agenda and presentations are now available as of 28th June.

Mark Webb, Adrian Lock and Pier Siebesma - Updated 15th June, 2011

CGILS Meeting

(CFMIP-GCSS Intercomparison of Large-Eddy and Single-Column Models)

March 1-2, 2010 at Stony Brook, Long Island, New York (Meeting website)

The objective of this meeting is to understand the physical mechanism of cloud feedbacks in climate models that participate in the CGILS case study with the goal of interpreting climate sensitivities of AR5 models. Specifically, the meeting will focus on

(1) how the parameterized processes (PBL, stratiform, convective, radiative) behave and interact to produce clouds in the SCMs

(2) what are the physical mechanisms of cloud feedback in the individual SCMs

(3) what can be learned from the LESs

(4) how can the LES results be used to constrain SCMs

(5) how to extrapolate the CGILS results to cloud feedbacks and climate sensitivities of the GCMs

Each participating group has been invited to make presentations for an in-depth analysis of its CGILS results. The presentations will cover all three CGILS locations (shallow cumulus, stratocumulus and stratus, at locations s6, s11, s12) , although emphasis will be for location s11 where LES results are available.

The meeting is open to public, but only presentations related to the meeting objectives are invited. If you do not belong to a participating group and wish to make a presentation, please send an email to Minghua Zhang (

Posted by Mark Webb on behalf of Minghua Zhang, Jan 2010

AMS Symposium on Boundary Layers and Turbulence

Keystone, Colorado, 2-6 August 2010

As chair of the AMS Committee on Boundary Layers and Turbulence, I want to invite you to the next Symposium. It will be held 2-6 August 2010 in Keystone, Colorado. We specifically hope to have a substantial number of submissions on boundary layer clouds, which is called out as a topic for emphasis in the Call for Papers. The conference web site is here

Basic information is on the site now, more will be added in the next few days. Keystone is in Summit County, a beautiful resort area in the Rocky Mountains, and about a 2-hour drive from Denver and Boulder.

The Symposium is always a very intense and valuable meeting with high information density. We hope you will help to maintain that tradition by presenting your work on boundary layer clouds and related matters.

If you have any questions, please contact me or Branko Kosovic, the Program Chair.

Best regards, Wayne Angevine

Posted by Mark Webb on behalf of Wayne Angevine November 2009

CFMIP/GCSS Boundary Layer WG Workshop on evaluation and understanding of cloud processes in GCMs

University of British Columbia, Vancouver, 8th-12th June, 2009.

A joint workshop of the Cloud Feedback Model Intercomparison Project and the GCSS Boundary Layer WG was held at:

University of British Columbia in Vancouver

Monday 8th - Friday 12th June, 2009.

Meeting programme: CfmipGCSSVancouverAgenda3rdJun.pdf.

The presentations from the meeting are now available here.

Many thanks to Phil Austin for hosting the meeting. We would also like to acknowledge the Canadian Foundation for Climate and Atmospheric Science for their financial support.

Mark Webb and Adrian Lock - Updated March 2010

4th PAN-GCSS meeting on : "Advances in modeling and observing clouds and convection."

June 2-6 2008 at Meteo-France, Toulouse,France.

Meeting announcement and Call for papers

Sponsored by: NASA, U.S. Department of Energy's ARM Program, NOAA, The World Climate Research Program and Meteo France.

The GEWEX Cloud System Study (GCSS) investigates cloud systems, their role in the climate system and their representation in models with a view to improving our capability to predict weather and climate using state-of the-art modeling and data assimilation systems. GCSS will hold a meeting to review and discuss "Advances in Modeling and observing Clouds and Convection" from June 2-6 2008 at Meteo-France, Toulouse, France.

Key areas to be discussed at this meeting are: "New observations and recent field campaigns", "Tropical Convection", "High Resolution Modeling on Large Domains" and "Cloud Climate Feedbacks". See also the full meeting announcement and call for papers and the GCSS website.

Sandrine Bony and Mark Webb Nov 2007

CFMIP/ENSEMBLES Workshop on assessment of cloud and water vapour feedback processes in GCMs, Paris, 11th-13th April, 2007.

IPSL and the Hadley Centre held a joint workshop of the CFMIP and ENSEMBLES projects in Paris on Wed 11th - Fri 13th April, 2007.

The subject of the workshop was the development of diagnostic techniques for the assessment of climate feedback processes in ensembles of GCM simulations. The focus was on the use of observations and process studies to constrain cloud and water vapour feedbacks.

The workshop took place at the "Pierre & Marie Curie University", in the 5th Arrondissement of Paris (Metro: "Jussieu" on line 7).

Workshop programme.

Working group recommendations on experiments, diagnostics and CFMIP-GCSS collaboration.

Workshop presentations.

Group photos.

Map of the University.

Venue, transportation and Paris hotels.

Mark Webb (Updated June 2007)