Data Assimilation in IPCC Level Models - Climate UQ

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In the IPCC AR4, the results were based on runs from ca. 24 models. These were built and run at climate research centers around the world and are each integrated Earth system models that comprise many components, including atmosphere, ocean, ice and land. The so-called dynamical core of such models is a computational model covering both the atmosphere and ocean and based on the primitive equations of GFD. While this is essentially computational, data come into the process of forming the final model. This incorporation occurs at a number of stages of the model development, including parametrization of sub-grid scale effects and model tuning. The process is not, however, done systematically and current practice is not thought of as "data assimilation."

There seems to be a growing realization that DA will have a significant role to play in future climate model development. This is, in part, driven by the need to quantify uncertainty in the model predictions. Nevertheless, there is not a consensus as to how DA should be used in these large-scale climate models. This working group will consider the issues involved in formulating a plan for DA in such models. The first step will be to understand how such a model is put together and uncover all the steps where data is currently used in the model formation. For this purpose, we will look at the latest CESM from NCAR.

A local CESM 1.0 implementation

Submitted by ghcox on May 8, 2012 - 12:38pm

In the final meeting before the transition workshop, Jesse Berwald will describe his heroic efforts to install CESM locally on the William and Mary cluster, and the test runs he has performed thus far. Future plans for this installation—including potential applications to uncertainty studies in climate models—will be discussed.

Starting date: Thursday, May 10, 2012
Starting time: 2:00 pm, Eastern Daylight Time
Meeting number: 683 491 234
Meeting password: Data-wg1
Audio conference: 919-685-9338

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Meeting Date:

May 10, 2012 - 2:00pm - 3:00pm

Data Assimilation in an Earth System Model and Polar Ice

Submitted by ghcox on March 27, 2012 - 1:50pm

A presentation by Zav Kothavala from the Courant Institute.

Starting date: Thursday, March 29, 2012
Starting time: 2:00 pm, Eastern Daylight Time
Meeting number: 683 491 234
Meeting password: Data-wg1
Audio conference: 919-685-9338

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Meeting Date:

March 29, 2012 - 2:00pm - 3:00pm

Partial notes from web discussion of Vanden-Eijnden & Weare

Submitted by Moore on March 15, 2012 - 3:32pm

Using rare events techniques to study/improve DA

Submitted by ghcox on March 14, 2012 - 12:09pm

Richard Moore will discuss a recent paper of Vanden-Eijnden & Weare, available below.

Starting date: Thursday, March 15, 2012
Starting time: 2:00 pm, Eastern Daylight Time
Meeting number: 683 491 234
Meeting password: Data-wg1
Audio conference: 919-685-9338

Meeting Date:

March 15, 2012 - 2:00pm - 3:00pm

Vanden-Eijnden & Weare, using rare events techniques to study/improve DA

Submitted by Moore on March 14, 2012 - 10:25am

CESM Whole Atmosphere Working Group

Submitted by ghcox on February 28, 2012 - 4:24pm

This week Doug Nychka will discuss the Whole Atmosphere Community Climate Model (WACCM).

Starting date: Thursday, March 1, 2012
Starting time: 2:00 pm, Eastern Daylight Time
Meeting number: 683 491 234
Meeting password: Data-wg1
Audio conference: 919-685-9338

Meeting Date:

March 1, 2012 - 2:00pm - 3:00pm

CESM Software Engineering Working Group

Submitted by ghcox on February 22, 2012 - 3:40pm

This week Chris Jones will give a presentation on the Software Engineering Group.

Starting date: Thursday, February 23, 2012
Starting time: 2:00 pm, Eastern Daylight Time
Meeting number: 683 491 234
Meeting password: Data-wg1
Audio conference: 919-685-9338

Meeting Date:

February 23, 2012 - 2:00pm - 3:00pm

CESM Land Model (note the new time and date!)

Submitted by ghcox on February 13, 2012 - 2:54pm

DA IPCC weekly meetings will now take place Thursdays, 2-3pm. This week we will celebrate our new time slot by joining Chris Danforth in a spirited discussion of the CESM Land Model.

Starting date: Thursday, February 16, 2012
Starting time: 2:00 pm, Eastern Daylight Time
Meeting number: 683 491 234
Meeting password: Data-wg1
Audio conference: 919-685-9338

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To join the online meeting (Now from mobile devices!)
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Meeting Date:

February 16, 2012 - 2:00pm - 3:00pm

Spring 2012 organizational meeting

Submitted by ghcox on February 6, 2012 - 4:55pm

Starting date: Tuesday, February 7, 2012
Starting time: 3:30 pm, Eastern Daylight Time (New York, GMT-04:00)
Meeting number: 683 491 234
Meeting password: Data-wg1
Audio conference: 919-685-9338

Meeting Date:

February 7, 2012 - 3:30pm - 5:00pm

Data Assimilation in IPCC Level Models

Submitted by ghcox on December 13, 2011 - 1:21pm

For the final meeting of the year, Bevin will lead a festive discussion of the CESM Ocean Model.

Starting date: Tuesday, December 13, 2011
Starting time: 3:30 pm, Eastern Daylight Time (New York, GMT-04:00)
Meeting number: 683 491 234
Meeting password: Data-wg1
Audio conference: 919-685-9338

Meeting Date:

December 13, 2011 - 3:30pm - 5:00pm

Working Group Information

Webmaster: Graham Cox

Meeting Date/Time:

Repeats every week until Tue Jun 12 2012 .

Tuesday, 3:30 pm

Meeting Room: SAMSI Room 259 (2nd Floor SAMSI Bldg)

Program: 2011-12 Program on Uncertainty Quantification: Climate Modeling

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A local CESM 1.0 implementation

When: May 10, 2012 - 2:00pm - 3:00pm
Data Assimilation in an Earth System Model and Polar Ice

When: March 29, 2012 - 2:00pm - 3:00pm
Using rare events techniques to study/improve DA

When: March 15, 2012 - 2:00pm - 3:00pm
CESM Whole Atmosphere Working Group

When: March 1, 2012 - 2:00pm - 3:00pm

Data Assimilation in IPCC Level Models - Climate UQ

Working Group Information

Active Documents

Meetings

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