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 (mzhang@notes.cc.sunysb.edu).

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.

We would like to announce a joint workshop of the Cloud Feedback Model Intercomparison Project and the GCSS Boundary Layer WG to be held at:

University of British Columbia in Vancouver

Monday 8th - Friday 12th June, 2009.

The meeting programme is now finalised (3rd June): CfmipGCSSVancouverAgenda3rdJun.pdf.

Minor revisions are possible, but we will not change the order of the sessions further to allow people to finalise their travel plans.

A block reservation of conveniently located accommodation has been made on the UBC campus - for details of this, the conference dinner, ice breaker and registration fee, please see local logistical information.

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 May 2009

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.

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 " Workshop programme.

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