Data Assimilation in IPCC Level Models - Climate UQ
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
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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Data Assimilation in an Earth System Model and Polar Ice
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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Partial notes from web discussion of Vanden-Eijnden & Weare
Using rare events techniques to study/improve DA
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
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To join the online meeting (Now from mobile devices!)
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2. If requested, enter your name and email address.
Vanden-Eijnden & Weare, using rare events techniques to study/improve DA
CESM Whole Atmosphere Working Group
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
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To join the online meeting (Now from mobile devices!)
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1. Go to https://samsi.webex.com/mw0306ld/mywebex/default.do?siteurl=samsi
2. If requested, enter your name and email address.
CESM Software Engineering Working Group
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
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To join the online meeting (Now from mobile devices!)
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1. Go to https://samsi.webex.com/mw0306ld/mywebex/default.do?siteurl=samsi
2. If requested, enter your name and email address.
CESM Land Model (note the new time and date!)
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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Spring 2012 organizational meeting
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
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To join the online meeting (Now from mobile devices!)
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1. Go to https://samsi.webex.com/mw0306ld/mywebex/default.do?siteurl=samsi
2. If requested, enter your name and email address.
3. If a password is required, enter the meeting password: Data-wg1
4. Click "Join".
Data Assimilation in IPCC Level Models
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
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To join the online meeting (Now from mobile devices!)
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1. Go to https://samsi.webex.com/mw0306ld/mywebex/default.do?siteurl=samsi
Working Group Information
Active Documents
Meetings
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May 10, 2012 - 2:00pm - 3:00pm
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March 29, 2012 - 2:00pm - 3:00pm
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March 15, 2012 - 2:00pm - 3:00pm
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March 1, 2012 - 2:00pm - 3:00pm
Group notifications
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