PaleoCarbon

Fall 2011
Meeting time: 12pm-1pm EST via WebEx.

Friday Mar 2, 2012
The future awaits a speaker!

Friday Feb 24, 2012
Parameter A review. Anyone who is anyone will be attending this talk! We are requesting that anyone who has presented about the A parameter in the budyko model put together 2-5(ish) slides about what they did. Everyone will get an oppertunity to remind the group of the great work they have done. Then we will chart out a direction for the future!

Friday Feb 17, 2012
Samantha Oestreicher and Esther Widiasih will present on what they learned at the Investigative Workshop on Disturbance Regimes and Climate-Carbon Feedback hosted by NIMBios.

Friday Feb 10, 2012
Samantha Oestreicher will present her talk for NIMBios about carbon and/or discuss some of her work with orbital variation on an ice-free budyko model.

Friday Feb 3, 2012
Working Meeting. Which questions to focus on?

Tuesday January 10, 2012
JMM review and recap!

HOLIDAY BREAK!

December 13, 2011
Anna Barry will talk to us!

November 29, 2011 and December 6, 2011
Samantha Oestreicher will discuss Peatland/ Ice Age Hypothesis (PELAIH)/ Glacial Burial Hypothesis.
The Slides

November 22, 2011
Esther Widiasih will discuss Dynamic ice-line Budyko-Sellers model and bifurcation diagrams.
The Slides

November 8, 2011 and November 15, 2011
Working Meeting to explore some of the results presented by Jim Walsh. Have your Mathematica skills ready!

November 1, 2011
Speaker: James Walsh, Oberlin College, visiting the School of Mathematics

Title: On the Jormungand global climate state
Abstract: We report on recent work of Abbot, Voigt and Koll in which an argument is made for the existence of a stable global climate state in which very nearly all of the Earth is ice-covered. This "Jormungand" state presents a potential model for Neoproterozoic glaciations.
The Slides

October 25, 2011
Speaker: none
Activity: We will be trying out Mikogo.com as a possible platform for the PaleoCarbon meetings. There will be no scientific/mathematical content covered in this webinar and it may not last the entire hour.

October 18, 2011
Speaker: Dick McGehee

Title: Isotopes as Climate Proxies:Some Thoughts about Simple Models. The Slides

October 11, 2011
Speaker: Samantha Oestreicher

The speaker will be introducing the carbon sequestration tactics of peatlands and the possible long term terrestrial carbon sequestration that they provide. A conceptual model for how this type terrestrial carbon storage could force the glacial cycles and provide some explanation for the dynamics of glacial cycles.
The Slides

October 4
Speaker: Samantha Oestreicher

The speaker will be providing an introduction to the Shallow-Water (SW) equations including some of the basic equation derivation. We will nondimensionalize the equatons. Then we will isolate the linear operator and solve for its Fourier modes. We will work through the mathematical analysis of the SW equations for fast/slow ocean dynamics.
Review
Several questions about the logic behind the 2 pi periodic boundary conditions were raised. We also questioned the sea surface height images because those were taken directly from the fourier modes which are in terms of amplitude and not distance. In addition we discussed possible units for the length scales of the phenomena.
The Slides

September 27, 2011
Speaker: Amanda Gartside & Mary Lou Zeeman

The speaker will be presenting ongoing research about a simplified coupled Temperature/Ice/Atmospheric Model.
Review:
Our presentation centered around the processes of weathering and volcanism in paleoclimate, based on a fairly recent paper in PNAS by Hilley and Porder (2008). From Emma Cutler and Mary Lou Zeeman's work this past summer, we have decided that including a simple carbon equation with a volcanism and weathering term fits well with the Budyko-Widiasih model since weathering is affected by the iceline and volcanism is constant. We do not have specific conclusions yet, although we found that it is important to analyze the relationship between weathering and volcanism. In the question period, we discussed the equation's similar structure to Esther & Anna's carbon equation with A, and we also discussed how the equation might relate to carbon uptake in the ocean.
The Slides

September 20, 2011
Speaker: Esther Widiasih and Anna Barry

The speakers will discuss their alternate approach for including atmospheric carbon into the Budyko energy balance model. They are searching for oscillations and canards within the system. One of the goals is to present a dynamical understanding of the phenomena that Dorian Abbot presents in his research.
The Slides

September 13, 2011
Speaker: Samantha Oestreicher

This first meeting will be mostly an organizational meeting. We'll talk about the summer, MCRN annual meeting, and goals for the semester. Please come with possible talks that you would like to commit to giving! We need everyone to participate in presenting and leading work days.

Samantha Oestreicher

Important Links

PaleoCarbon