[CIG-ALL] *** TODAY *** CIG WEBINAR: Thursday May 15 - Community Dynamo Code Development Project

[Lorraine Hwang]

15 May 2014

Dear Community:

Please joins us TODAY Thursday, May 15  at  2pm PT for our final webinar of the year discussing CIG’s Community Dynamo Code Development Project.  Professor Jon Aurnou (UCLA) will be discussing the efforts of the Geodynamo Working Group to benchmark and develop the next generation of geodynamo codes exploring the connection between the simulation, experimental and observational worlds:
Over the past 20 years, researchers have made great strides in simulating convection-driven dynamo action.  They have modeled convection of electrically-conducting fluid in a rotating spherical shell by solving the full set of dynamo equations.  However, the parameter values employed in these dynamo models are very far from being Earth-like; they do not adequately approach the extreme values that describe planetary settings. Typical present day core dynamics simulations can resolve `quasi-laminar' convection at moderate rotation rates. In contrast, in Earth's core turbulent convective motions are strongly modified by the effects of planetary rotation. Because the core's extreme parameter values are presently inaccessible in dynamo models, the rapidly rotating turbulent magnetoconvection that exists in Earth's core has never been simulated. The discrepancy between the turbulence that exists in the core and the quasi-laminar flows that exist in geodynamo simulations raises the question: Are the current generation of dynamo simulations modeling convection that is relevant to actual core processes?

To address this question, CIG's Dynamo Working Group has been developing two new codes, Calypso and Rayleigh, in order to provide the broader community with the ability to carry out massively-parallelized dynamo simulation that can more accurately simulate Earth's core conditions.  In addition, we are carrying out a community-wide accuracy-performace dynamo benchmark exercise to determine which dynamo simulation methods are best suited for the development of next generation codes that will be well-suited to peta- and exa-scale computing platforms.


You may connect to the meeting through the link provided below or through our home page at geodynamics.org: 
	
      https://uc-d.adobeconnect.com/_a841422360/r28i3av93ti/

More complete instructions can also be found at:
       http://www.geodynamics.org/cig/community/Webinar

Remember to test your connection ahead of time. 

Past CIG seminars are available on our website and YouTube Channel.

Best,
Lorraine

***************************
Lorraine Hwang, PhD
Associate Director, CIG
530.752.3656
ljhwang at ucdavis.edu



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.geodynamics.org/pipermail/cig-all/attachments/20140515/b1f8e296/attachment.html>