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This Week at Physics

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Events During the Week of April 12th through April 19th, 2015

Monday, April 13th, 2015

Plasma Physics (Physics/ECE/NE 922) Seminar
FNSF: Next Facility to Qualify/Validate Nuclear Technologies for US DEMO
Time: 12:00 pm
Place: 1610 Engineering Hall
Speaker: Dr. Laila El-Guebaly, UW-Madison, Engineering Physics
Host: UW
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Council Meeting
Time: 4:00 pm
Place: 2314 Chamberlin (Chair's Conference Room)
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Tuesday, April 14th, 2015

Chaos & Complex Systems Seminar
How scale-dependent are ecosystem-atmosphere exchanges?
Time: 12:05 pm
Place: 4274 Chamberlin Hall (Refreshments will be served)
Speaker: Ankur Desai, UW Department of Atmospheric and Oceanic Sciences
Abstract: Terrestrial surfaces are a lower boundary condition for exchanges of trace gases ,energy, and momentum with the atmosphere and consist of biologically-active organisms. In terrestrial ecosystems, information relevant to these processes scales upwards from gene to cell to microbe to plant, while for the atmosphere, the relevant modes of interactions with these processes scale downward from climate dynamics to synoptic systems to boundary layer turbulence. Consequently, identifying the appropriate space and time scale over which ecosystems interact with the atmosphere is critical for improving theoretical and numerical simulations of these processes. Further, there is a fundamental spatiotemporal scale mismatch between the terrestrial observations made about these process and the spatial scale over which numerical models of ecosystems, weather systems, and climate operate. I will present a general overview of this problem, a few examples of work in my lab addressing this issue from the perspective of 1) modeling spatial heterogeneity in ecosystem energy balance, 2) data synthesis for terrestrial carbon cycling, and 3) rectification of eddy covariance flux tower observation flux footprint bias. The overview and examples will be used to engage discussion in a general conceptual framework on ecosystem-atmosphere scaling and model-data comparison.
Host: Clint Sprott
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"Physics Today" Undergrad Colloquium (Physics 301)
Puzzles for Particle Physics
Time: 1:20 pm
Place: 2120 Chamberlin Hall
Speaker: Yang Bai, UW Madison Department of Physics
Host: Smith
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Wednesday, April 15th, 2015

Department Meeting
Time: 12:15 pm
Place: 5310 Chamberlin Hall
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Thursday, April 16th, 2015

No events scheduled

Friday, April 17th, 2015

Cosmology Journal Club
An Informal discussion about a broad variety of arXiv papers related to Cosmology
Time: 12:15 pm
Place: 5242 Chamberlin Hall
Abstract: Please visit the following link for more details:
Please feel free to bring your lunch!
If you have questions or comments about this journal club, would like to propose a topic or volunteer to introduce a paper, please email Le Zhang (lzhang263@wisc.edu)
Host: Peter Timbie
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Physics Department Colloquium
Title to be announced
Time: 3:30 pm
Place: 2241 Chamberlin Hall (coffee at 4:30 pm)
Speaker: Michel Gingras, University of Waterloo
Abstract: TBA
Host: Sue Coppersmith
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